Merge phase #1 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

This merges phase 1 of the x86 tree, which is a collection of branches:

  x86/alternatives, x86/cleanups, x86/commandline, x86/crashdump,
  x86/debug, x86/defconfig, x86/doc, x86/exports, x86/fpu, x86/gart,
  x86/idle, x86/mm, x86/mtrr, x86/nmi-watchdog, x86/oprofile,
  x86/paravirt, x86/reboot, x86/sparse-fixes, x86/tsc, x86/urgent and
  x86/vmalloc

and as Ingo says: "these are the easiest, purely independent x86 topics
with no conflicts, in one nice Octopus merge".

* 'x86-v28-for-linus-phase1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (147 commits)
  x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE
  x86: mtrr_cleanup: first 1M may be covered in var mtrrs
  x86: mtrr_cleanup: print out correct type v2
  x86: trivial printk fix in efi.c
  x86, debug: mtrr_cleanup print out var mtrr before change it
  x86: mtrr_cleanup try gran_size to less than 1M, v3
  x86: mtrr_cleanup try gran_size to less than 1M, cleanup
  x86: change MTRR_SANITIZER to def_bool y
  x86, debug printouts: IOMMU setup failures should not be KERN_ERR
  x86: export set_memory_ro and set_memory_rw
  x86: mtrr_cleanup try gran_size to less than 1M
  x86: mtrr_cleanup prepare to make gran_size to less 1M
  x86: mtrr_cleanup safe to get more spare regs now
  x86_64: be less annoying on boot, v2
  x86: mtrr_cleanup hole size should be less than half of chunk_size, v2
  x86: add mtrr_cleanup_debug command line
  x86: mtrr_cleanup optimization, v2
  x86: don't need to go to chunksize to 4G
  x86_64: be less annoying on boot
  x86, olpc: fix endian bug in openfirmware workaround
  ...

Documentation/00-INDEX

@@ -251,8 +251,6 @@ mono.txt
 	- how to execute Mono-based .NET binaries with the help of BINFMT_MISC.
 moxa-smartio
 	- file with info on installing/using Moxa multiport serial driver.
-mtrr.txt
-	- how to use PPro Memory Type Range Registers to increase performance.
 mutex-design.txt
 	- info on the generic mutex subsystem.
 namespaces/

Documentation/kernel-parameters.txt

@@ -463,12 +463,6 @@ and is between 256 and 4096 characters. It is defined in the file
 			Range: 0 - 8192
 			Default: 64
 
-	disable_8254_timer
-	enable_8254_timer
-			[IA32/X86_64] Disable/Enable interrupt 0 timer routing
-			over the 8254 in addition to over the IO-APIC. The
-			kernel tries to set a sensible default.
-
 	hpet=		[X86-32,HPET] option to control HPET usage
 			Format: { enable (default) | disable | force }
 			disable: disable HPET and use PIT instead
@@ -1882,6 +1876,12 @@ and is between 256 and 4096 characters. It is defined in the file
 	shapers=	[NET]
 			Maximal number of shapers.
 
+	show_msr=	[x86] show boot-time MSR settings
+			Format: { <integer> }
+			Show boot-time (BIOS-initialized) MSR settings.
+			The parameter means the number of CPUs to show,
+			for example 1 means boot CPU only.
+
 	sim710=		[SCSI,HW]
 			See header of drivers/scsi/sim710.c.
 

Documentation/x86/00-INDEX

@@ -0,0 +1,4 @@
+00-INDEX
+	- this file
+mtrr.txt
+	- how to use x86 Memory Type Range Registers to increase performance

Documentation/x86/i386/boot.txt → Documentation/x86/boot.txt

@@ -308,7 +308,7 @@ Protocol:	2.00+
 
 Field name:	start_sys
 Type:		read
-Offset/size:	0x20c/4
+Offset/size:	0x20c/2
 Protocol:	2.00+
 
   The load low segment (0x1000).  Obsolete.

Documentation/mtrr.txt → Documentation/x86/mtrr.txt

@@ -18,7 +18,7 @@ Richard Gooch
   The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
   MTRRs. These are supported.  The AMD Athlon family provide 8 Intel
   style MTRRs.
-  
+
   The Centaur C6 (WinChip) has 8 MCRs, allowing write-combining. These
   are supported.
 
@@ -87,7 +87,7 @@ reg00: base=0x00000000 (   0MB), size=  64MB: write-back, count=1
 reg01: base=0xfb000000 (4016MB), size=  16MB: write-combining, count=1
 reg02: base=0xfb000000 (4016MB), size=   4kB: uncachable, count=1
 
-Some cards (especially Voodoo Graphics boards) need this 4 kB area 
+Some cards (especially Voodoo Graphics boards) need this 4 kB area
 excluded from the beginning of the region because it is used for
 registers.
 

Documentation/x86/pat.txt

@@ -14,6 +14,10 @@ PAT allows for different types of memory attributes. The most commonly used
 ones that will be supported at this time are Write-back, Uncached,
 Write-combined and Uncached Minus.
 
+
+PAT APIs
+--------
+
 There are many different APIs in the kernel that allows setting of memory
 attributes at the page level. In order to avoid aliasing, these interfaces
 should be used thoughtfully. Below is a table of interfaces available,
@@ -26,38 +30,38 @@ address range to avoid any aliasing.
 API                    |    RAM   |  ACPI,...  |  Reserved/Holes  |
 -----------------------|----------|------------|------------------|
                        |          |            |                  |
-ioremap                |    --    |    UC      |       UC         |
+ioremap                |    --    |    UC-     |       UC-        |
                        |          |            |                  |
 ioremap_cache          |    --    |    WB      |       WB         |
                        |          |            |                  |
-ioremap_nocache        |    --    |    UC      |       UC         |
+ioremap_nocache        |    --    |    UC-     |       UC-        |
                        |          |            |                  |
 ioremap_wc             |    --    |    --      |       WC         |
                        |          |            |                  |
-set_memory_uc          |    UC    |    --      |       --         |
+set_memory_uc          |    UC-   |    --      |       --         |
  set_memory_wb         |          |            |                  |
                        |          |            |                  |
 set_memory_wc          |    WC    |    --      |       --         |
  set_memory_wb         |          |            |                  |
                        |          |            |                  |
-pci sysfs resource     |    --    |    --      |       UC         |
+pci sysfs resource     |    --    |    --      |       UC-        |
                        |          |            |                  |
 pci sysfs resource_wc  |    --    |    --      |       WC         |
  is IORESOURCE_PREFETCH|          |            |                  |
                        |          |            |                  |
-pci proc               |    --    |    --      |       UC         |
+pci proc               |    --    |    --      |       UC-        |
  !PCIIOC_WRITE_COMBINE |          |            |                  |
                        |          |            |                  |
 pci proc               |    --    |    --      |       WC         |
  PCIIOC_WRITE_COMBINE  |          |            |                  |
                        |          |            |                  |
-/dev/mem               |    --    |    UC      |       UC         |
+/dev/mem               |    --    |  WB/WC/UC- |    WB/WC/UC-     |
  read-write            |          |            |                  |
                        |          |            |                  |
-/dev/mem               |    --    |    UC      |       UC         |
+/dev/mem               |    --    |    UC-     |       UC-        |
  mmap SYNC flag        |          |            |                  |
                        |          |            |                  |
-/dev/mem               |    --    |  WB/WC/UC  |    WB/WC/UC      |
+/dev/mem               |    --    |  WB/WC/UC- |    WB/WC/UC-     |
  mmap !SYNC flag       |          |(from exist-|  (from exist-    |
  and                   |          |  ing alias)|    ing alias)    |
  any alias to this area|          |            |                  |
@@ -68,7 +72,7 @@ pci proc               |    --    |    --      |       WC         |
  and                   |          |            |                  |
  MTRR says WB          |          |            |                  |
                        |          |            |                  |
-/dev/mem               |    --    |    --      |    UC_MINUS      |
+/dev/mem               |    --    |    --      |       UC-        |
  mmap !SYNC flag       |          |            |                  |
  no alias to this area |          |            |                  |
  and                   |          |            |                  |
@@ -98,3 +102,35 @@ types.
 
 Drivers should use set_memory_[uc|wc] to set access type for RAM ranges.
 
+
+PAT debugging
+-------------
+
+With CONFIG_DEBUG_FS enabled, PAT memtype list can be examined by
+
+# mount -t debugfs debugfs /sys/kernel/debug
+# cat /sys/kernel/debug/x86/pat_memtype_list
+PAT memtype list:
+uncached-minus @ 0x7fadf000-0x7fae0000
+uncached-minus @ 0x7fb19000-0x7fb1a000
+uncached-minus @ 0x7fb1a000-0x7fb1b000
+uncached-minus @ 0x7fb1b000-0x7fb1c000
+uncached-minus @ 0x7fb1c000-0x7fb1d000
+uncached-minus @ 0x7fb1d000-0x7fb1e000
+uncached-minus @ 0x7fb1e000-0x7fb25000
+uncached-minus @ 0x7fb25000-0x7fb26000
+uncached-minus @ 0x7fb26000-0x7fb27000
+uncached-minus @ 0x7fb27000-0x7fb28000
+uncached-minus @ 0x7fb28000-0x7fb2e000
+uncached-minus @ 0x7fb2e000-0x7fb2f000
+uncached-minus @ 0x7fb2f000-0x7fb30000
+uncached-minus @ 0x7fb31000-0x7fb32000
+uncached-minus @ 0x80000000-0x90000000
+
+This list shows physical address ranges and various PAT settings used to
+access those physical address ranges.
+
+Another, more verbose way of getting PAT related debug messages is with
+"debugpat" boot parameter. With this parameter, various debug messages are
+printed to dmesg log.
+

Documentation/x86/x86_64/boot-options.txt

@@ -54,10 +54,6 @@ APICs
 		 apicmaintimer. Useful when your PIT timer is totally
 		 broken.
 
-   disable_8254_timer / enable_8254_timer
-		 Enable interrupt 0 timer routing over the 8254 in addition to over
-	         the IO-APIC. The kernel tries to set a sensible default.
-
 Early Console
 
    syntax: earlyprintk=vga

arch/x86/Kconfig

@@ -29,6 +29,7 @@ config X86
 	select HAVE_FTRACE
 	select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
 	select HAVE_ARCH_KGDB if !X86_VOYAGER
+	select HAVE_ARCH_TRACEHOOK
 	select HAVE_GENERIC_DMA_COHERENT if X86_32
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS
 
@@ -1020,7 +1021,7 @@ config HAVE_ARCH_ALLOC_REMAP
 
 config ARCH_FLATMEM_ENABLE
 	def_bool y
-	depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC && !NUMA
+	depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && !NUMA
 
 config ARCH_DISCONTIGMEM_ENABLE
 	def_bool y
@@ -1036,7 +1037,7 @@ config ARCH_SPARSEMEM_DEFAULT
 
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
-	depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC)
+	depends on X86_64 || NUMA || (EXPERIMENTAL && X86_PC) || X86_GENERICARCH
 	select SPARSEMEM_STATIC if X86_32
 	select SPARSEMEM_VMEMMAP_ENABLE if X86_64
 
@@ -1117,10 +1118,10 @@ config MTRR
 	  You can safely say Y even if your machine doesn't have MTRRs, you'll
 	  just add about 9 KB to your kernel.
 
-	  See <file:Documentation/mtrr.txt> for more information.
+	  See <file:Documentation/x86/mtrr.txt> for more information.
 
 config MTRR_SANITIZER
-	bool
+	def_bool y
 	prompt "MTRR cleanup support"
 	depends on MTRR
 	help
@@ -1131,7 +1132,7 @@ config MTRR_SANITIZER
 	  The largest mtrr entry size for a continous block can be set with
 	  mtrr_chunk_size.
 
-	  If unsure, say N.
+	  If unsure, say Y.
 
 config MTRR_SANITIZER_ENABLE_DEFAULT
 	int "MTRR cleanup enable value (0-1)"
@@ -1191,7 +1192,6 @@ config IRQBALANCE
 config SECCOMP
 	def_bool y
 	prompt "Enable seccomp to safely compute untrusted bytecode"
-	depends on PROC_FS
 	help
 	  This kernel feature is useful for number crunching applications
 	  that may need to compute untrusted bytecode during their
@@ -1199,7 +1199,7 @@ config SECCOMP
 	  the process as file descriptors supporting the read/write
 	  syscalls, it's possible to isolate those applications in
 	  their own address space using seccomp. Once seccomp is
-	  enabled via /proc/<pid>/seccomp, it cannot be disabled
+	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
 	  and the task is only allowed to execute a few safe syscalls
 	  defined by each seccomp mode.
 
@@ -1356,14 +1356,14 @@ config PHYSICAL_ALIGN
 	  Don't change this unless you know what you are doing.
 
 config HOTPLUG_CPU
-	bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
-	depends on SMP && HOTPLUG && EXPERIMENTAL && !X86_VOYAGER
+	bool "Support for hot-pluggable CPUs"
+	depends on SMP && HOTPLUG && !X86_VOYAGER
 	---help---
-	  Say Y here to experiment with turning CPUs off and on, and to
-	  enable suspend on SMP systems. CPUs can be controlled through
-	  /sys/devices/system/cpu.
-	  Say N if you want to disable CPU hotplug and don't need to
-	  suspend.
+	  Say Y here to allow turning CPUs off and on. CPUs can be
+	  controlled through /sys/devices/system/cpu.
+	  ( Note: power management support will enable this option
+	    automatically on SMP systems. )
+	  Say N if you want to disable CPU hotplug.
 
 config COMPAT_VDSO
 	def_bool y
@@ -1378,6 +1378,51 @@ config COMPAT_VDSO
 
 	  If unsure, say Y.
 
+config CMDLINE_BOOL
+	bool "Built-in kernel command line"
+	default n
+	help
+	  Allow for specifying boot arguments to the kernel at
+	  build time.  On some systems (e.g. embedded ones), it is
+	  necessary or convenient to provide some or all of the
+	  kernel boot arguments with the kernel itself (that is,
+	  to not rely on the boot loader to provide them.)
+
+	  To compile command line arguments into the kernel,
+	  set this option to 'Y', then fill in the
+	  the boot arguments in CONFIG_CMDLINE.
+
+	  Systems with fully functional boot loaders (i.e. non-embedded)
+	  should leave this option set to 'N'.
+
+config CMDLINE
+	string "Built-in kernel command string"
+	depends on CMDLINE_BOOL
+	default ""
+	help
+	  Enter arguments here that should be compiled into the kernel
+	  image and used at boot time.  If the boot loader provides a
+	  command line at boot time, it is appended to this string to
+	  form the full kernel command line, when the system boots.
+
+	  However, you can use the CONFIG_CMDLINE_OVERRIDE option to
+	  change this behavior.
+
+	  In most cases, the command line (whether built-in or provided
+	  by the boot loader) should specify the device for the root
+	  file system.
+
+config CMDLINE_OVERRIDE
+	bool "Built-in command line overrides boot loader arguments"
+	default n
+	depends on CMDLINE_BOOL
+	help
+	  Set this option to 'Y' to have the kernel ignore the boot loader
+	  command line, and use ONLY the built-in command line.
+
+	  This is used to work around broken boot loaders.  This should
+	  be set to 'N' under normal conditions.
+
 endmenu
 
 config ARCH_ENABLE_MEMORY_HOTPLUG
@@ -1773,7 +1818,7 @@ config COMPAT_FOR_U64_ALIGNMENT
 
 config SYSVIPC_COMPAT
 	def_bool y
-	depends on X86_64 && COMPAT && SYSVIPC
+	depends on COMPAT && SYSVIPC
 
 endmenu
 

arch/x86/Kconfig.cpu

@@ -418,3 +418,21 @@ config X86_MINIMUM_CPU_FAMILY
 config X86_DEBUGCTLMSR
 	def_bool y
 	depends on !(MK6 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
+
+config X86_DS
+	bool "Debug Store support"
+	default y
+	help
+	  Add support for Debug Store.
+	  This allows the kernel to provide a memory buffer to the hardware
+	  to store various profiling and tracing events.
+
+config X86_PTRACE_BTS
+	bool "ptrace interface to Branch Trace Store"
+	default y
+	depends on (X86_DS && X86_DEBUGCTLMSR)
+	help
+	  Add a ptrace interface to allow collecting an execution trace
+	  of the traced task.
+	  This collects control flow changes in a (cyclic) buffer and allows
+	  debuggers to fill in the gaps and show an execution trace of the debuggee.

arch/x86/boot/compressed/head_32.S

@@ -137,14 +137,15 @@ relocated:
  */
 	movl output_len(%ebx), %eax
 	pushl %eax
+			# push arguments for decompress_kernel:
 	pushl %ebp	# output address
 	movl input_len(%ebx), %eax
 	pushl %eax	# input_len
 	leal input_data(%ebx), %eax
 	pushl %eax	# input_data
 	leal boot_heap(%ebx), %eax
-	pushl %eax	# heap area as third argument
-	pushl %esi	# real mode pointer as second arg
+	pushl %eax	# heap area
+	pushl %esi	# real mode pointer
 	call decompress_kernel
 	addl $20, %esp
 	popl %ecx

arch/x86/boot/compressed/misc.c

@@ -16,7 +16,7 @@
  */
 #undef CONFIG_PARAVIRT
 #ifdef CONFIG_X86_32
-#define _ASM_DESC_H_ 1
+#define ASM_X86__DESC_H 1
 #endif
 
 #ifdef CONFIG_X86_64
@@ -27,7 +27,7 @@
 #include <linux/linkage.h>
 #include <linux/screen_info.h>
 #include <linux/elf.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/page.h>
 #include <asm/boot.h>
 #include <asm/bootparam.h>
@@ -251,7 +251,7 @@ static void __putstr(int error, const char *s)
 				y--;
 			}
 		} else {
-			vidmem [(x + cols * y) * 2] = c;
+			vidmem[(x + cols * y) * 2] = c;
 			if (++x >= cols) {
 				x = 0;
 				if (++y >= lines) {
@@ -277,7 +277,8 @@ static void *memset(void *s, int c, unsigned n)
 	int i;
 	char *ss = s;
 
-	for (i = 0; i < n; i++) ss[i] = c;
+	for (i = 0; i < n; i++)
+		ss[i] = c;
 	return s;
 }
 
@@ -287,7 +288,8 @@ static void *memcpy(void *dest, const void *src, unsigned n)
 	const char *s = src;
 	char *d = dest;
 
-	for (i = 0; i < n; i++) d[i] = s[i];
+	for (i = 0; i < n; i++)
+		d[i] = s[i];
 	return dest;
 }
 

arch/x86/boot/header.S

@@ -30,7 +30,6 @@ SYSSEG		= DEF_SYSSEG		/* system loaded at 0x10000 (65536) */
 SYSSIZE		= DEF_SYSSIZE		/* system size: # of 16-byte clicks */
 					/* to be loaded */
 ROOT_DEV	= 0			/* ROOT_DEV is now written by "build" */
-SWAP_DEV	= 0			/* SWAP_DEV is now written by "build" */
 
 #ifndef SVGA_MODE
 #define SVGA_MODE ASK_VGA

arch/x86/configs/i386_defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.27-rc4
-# Mon Aug 25 15:04:00 2008
+# Linux kernel version: 2.6.27-rc5
+# Wed Sep  3 17:23:09 2008
 #
 # CONFIG_64BIT is not set
 CONFIG_X86_32=y
@@ -202,7 +202,7 @@ CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
 # CONFIG_M586 is not set
 # CONFIG_M586TSC is not set
 # CONFIG_M586MMX is not set
-# CONFIG_M686 is not set
+CONFIG_M686=y
 # CONFIG_MPENTIUMII is not set
 # CONFIG_MPENTIUMIII is not set
 # CONFIG_MPENTIUMM is not set
@@ -221,13 +221,14 @@ CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
 # CONFIG_MVIAC3_2 is not set
 # CONFIG_MVIAC7 is not set
 # CONFIG_MPSC is not set
-CONFIG_MCORE2=y
+# CONFIG_MCORE2 is not set
 # CONFIG_GENERIC_CPU is not set
 CONFIG_X86_GENERIC=y
 CONFIG_X86_CPU=y
 CONFIG_X86_CMPXCHG=y
 CONFIG_X86_L1_CACHE_SHIFT=7
 CONFIG_X86_XADD=y
+# CONFIG_X86_PPRO_FENCE is not set
 CONFIG_X86_WP_WORKS_OK=y
 CONFIG_X86_INVLPG=y
 CONFIG_X86_BSWAP=y
@@ -235,14 +236,15 @@ CONFIG_X86_POPAD_OK=y
 CONFIG_X86_INTEL_USERCOPY=y
 CONFIG_X86_USE_PPRO_CHECKSUM=y
 CONFIG_X86_TSC=y
+CONFIG_X86_CMOV=y
 CONFIG_X86_MINIMUM_CPU_FAMILY=4
 CONFIG_X86_DEBUGCTLMSR=y
 CONFIG_HPET_TIMER=y
 CONFIG_HPET_EMULATE_RTC=y
 CONFIG_DMI=y
 # CONFIG_IOMMU_HELPER is not set
-CONFIG_NR_CPUS=4
-# CONFIG_SCHED_SMT is not set
+CONFIG_NR_CPUS=64
+CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 # CONFIG_PREEMPT_NONE is not set
 CONFIG_PREEMPT_VOLUNTARY=y
@@ -254,7 +256,8 @@ CONFIG_VM86=y
 # CONFIG_TOSHIBA is not set
 # CONFIG_I8K is not set
 CONFIG_X86_REBOOTFIXUPS=y
-# CONFIG_MICROCODE is not set
+CONFIG_MICROCODE=y
+CONFIG_MICROCODE_OLD_INTERFACE=y
 CONFIG_X86_MSR=y
 CONFIG_X86_CPUID=y
 # CONFIG_NOHIGHMEM is not set
@@ -2115,7 +2118,7 @@ CONFIG_IO_DELAY_0X80=y
 CONFIG_DEFAULT_IO_DELAY_TYPE=0
 CONFIG_DEBUG_BOOT_PARAMS=y
 # CONFIG_CPA_DEBUG is not set
-# CONFIG_OPTIMIZE_INLINING is not set
+CONFIG_OPTIMIZE_INLINING=y
 
 #
 # Security options

arch/x86/configs/x86_64_defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.27-rc4
-# Mon Aug 25 14:40:46 2008
+# Linux kernel version: 2.6.27-rc5
+# Wed Sep  3 17:13:39 2008
 #
 CONFIG_64BIT=y
 # CONFIG_X86_32 is not set
@@ -218,17 +218,14 @@ CONFIG_X86_PC=y
 # CONFIG_MVIAC3_2 is not set
 # CONFIG_MVIAC7 is not set
 # CONFIG_MPSC is not set
-CONFIG_MCORE2=y
-# CONFIG_GENERIC_CPU is not set
+# CONFIG_MCORE2 is not set
+CONFIG_GENERIC_CPU=y
 CONFIG_X86_CPU=y
-CONFIG_X86_L1_CACHE_BYTES=64
-CONFIG_X86_INTERNODE_CACHE_BYTES=64
+CONFIG_X86_L1_CACHE_BYTES=128
+CONFIG_X86_INTERNODE_CACHE_BYTES=128
 CONFIG_X86_CMPXCHG=y
-CONFIG_X86_L1_CACHE_SHIFT=6
+CONFIG_X86_L1_CACHE_SHIFT=7
 CONFIG_X86_WP_WORKS_OK=y
-CONFIG_X86_INTEL_USERCOPY=y
-CONFIG_X86_USE_PPRO_CHECKSUM=y
-CONFIG_X86_P6_NOP=y
 CONFIG_X86_TSC=y
 CONFIG_X86_CMPXCHG64=y
 CONFIG_X86_CMOV=y
@@ -243,9 +240,8 @@ CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y
 CONFIG_AMD_IOMMU=y
 CONFIG_SWIOTLB=y
 CONFIG_IOMMU_HELPER=y
-# CONFIG_MAXSMP is not set
-CONFIG_NR_CPUS=4
-# CONFIG_SCHED_SMT is not set
+CONFIG_NR_CPUS=64
+CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 # CONFIG_PREEMPT_NONE is not set
 CONFIG_PREEMPT_VOLUNTARY=y
@@ -254,7 +250,8 @@ CONFIG_X86_LOCAL_APIC=y
 CONFIG_X86_IO_APIC=y
 # CONFIG_X86_MCE is not set
 # CONFIG_I8K is not set
-# CONFIG_MICROCODE is not set
+CONFIG_MICROCODE=y
+CONFIG_MICROCODE_OLD_INTERFACE=y
 CONFIG_X86_MSR=y
 CONFIG_X86_CPUID=y
 CONFIG_NUMA=y
@@ -290,7 +287,7 @@ CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
 CONFIG_MTRR=y
 # CONFIG_MTRR_SANITIZER is not set
-# CONFIG_X86_PAT is not set
+CONFIG_X86_PAT=y
 CONFIG_EFI=y
 CONFIG_SECCOMP=y
 # CONFIG_HZ_100 is not set
@@ -2089,7 +2086,7 @@ CONFIG_IO_DELAY_0X80=y
 CONFIG_DEFAULT_IO_DELAY_TYPE=0
 CONFIG_DEBUG_BOOT_PARAMS=y
 # CONFIG_CPA_DEBUG is not set
-# CONFIG_OPTIMIZE_INLINING is not set
+CONFIG_OPTIMIZE_INLINING=y
 
 #
 # Security options

arch/x86/ia32/ia32_aout.c

@@ -85,8 +85,10 @@ static void dump_thread32(struct pt_regs *regs, struct user32 *dump)
 	dump->regs.ax = regs->ax;
 	dump->regs.ds = current->thread.ds;
 	dump->regs.es = current->thread.es;
-	asm("movl %%fs,%0" : "=r" (fs)); dump->regs.fs = fs;
-	asm("movl %%gs,%0" : "=r" (gs)); dump->regs.gs = gs;
+	savesegment(fs, fs);
+	dump->regs.fs = fs;
+	savesegment(gs, gs);
+	dump->regs.gs = gs;
 	dump->regs.orig_ax = regs->orig_ax;
 	dump->regs.ip = regs->ip;
 	dump->regs.cs = regs->cs;
@@ -430,8 +432,9 @@ beyond_if:
 	current->mm->start_stack =
 		(unsigned long)create_aout_tables((char __user *)bprm->p, bprm);
 	/* start thread */
-	asm volatile("movl %0,%%fs" :: "r" (0)); \
-	asm volatile("movl %0,%%es; movl %0,%%ds": :"r" (__USER32_DS));
+	loadsegment(fs, 0);
+	loadsegment(ds, __USER32_DS);
+	loadsegment(es, __USER32_DS);
 	load_gs_index(0);
 	(regs)->ip = ex.a_entry;
 	(regs)->sp = current->mm->start_stack;

arch/x86/ia32/ia32_signal.c

@@ -206,7 +206,7 @@ struct rt_sigframe
 	{ unsigned int cur;						\
 	  unsigned short pre;						\
 	  err |= __get_user(pre, &sc->seg);				\
-	  asm volatile("movl %%" #seg ",%0" : "=r" (cur));		\
+	  savesegment(seg, cur);					\
 	  pre |= mask;							\
 	  if (pre != cur) loadsegment(seg, pre); }
 
@@ -235,7 +235,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
 	 */
 	err |= __get_user(gs, &sc->gs);
 	gs |= 3;
-	asm("movl %%gs,%0" : "=r" (oldgs));
+	savesegment(gs, oldgs);
 	if (gs != oldgs)
 		load_gs_index(gs);
 
@@ -355,14 +355,13 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
 {
 	int tmp, err = 0;
 
-	tmp = 0;
-	__asm__("movl %%gs,%0" : "=r"(tmp): "0"(tmp));
+	savesegment(gs, tmp);
 	err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
-	__asm__("movl %%fs,%0" : "=r"(tmp): "0"(tmp));
+	savesegment(fs, tmp);
 	err |= __put_user(tmp, (unsigned int __user *)&sc->fs);
-	__asm__("movl %%ds,%0" : "=r"(tmp): "0"(tmp));
+	savesegment(ds, tmp);
 	err |= __put_user(tmp, (unsigned int __user *)&sc->ds);
-	__asm__("movl %%es,%0" : "=r"(tmp): "0"(tmp));
+	savesegment(es, tmp);
 	err |= __put_user(tmp, (unsigned int __user *)&sc->es);
 
 	err |= __put_user((u32)regs->di, &sc->di);
@@ -498,8 +497,8 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
 	regs->dx = 0;
 	regs->cx = 0;
 
-	asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
-	asm volatile("movl %0,%%es" :: "r" (__USER32_DS));
+	loadsegment(ds, __USER32_DS);
+	loadsegment(es, __USER32_DS);
 
 	regs->cs = __USER32_CS;
 	regs->ss = __USER32_DS;
@@ -591,8 +590,8 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	regs->dx = (unsigned long) &frame->info;
 	regs->cx = (unsigned long) &frame->uc;
 
-	asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
-	asm volatile("movl %0,%%es" :: "r" (__USER32_DS));
+	loadsegment(ds, __USER32_DS);
+	loadsegment(es, __USER32_DS);
 
 	regs->cs = __USER32_CS;
 	regs->ss = __USER32_DS;

arch/x86/ia32/sys_ia32.c

@@ -556,15 +556,6 @@ asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig,
 	return ret;
 }
 
-/* These are here just in case some old ia32 binary calls it. */
-asmlinkage long sys32_pause(void)
-{
-	current->state = TASK_INTERRUPTIBLE;
-	schedule();
-	return -ERESTARTNOHAND;
-}
-
-
 #ifdef CONFIG_SYSCTL_SYSCALL
 struct sysctl_ia32 {
 	unsigned int	name;

arch/x86/kernel/acpi/boot.c

@@ -58,7 +58,6 @@ EXPORT_SYMBOL(acpi_disabled);
 #ifdef	CONFIG_X86_64
 
 #include <asm/proto.h>
-#include <asm/genapic.h>
 
 #else				/* X86 */
 
@@ -97,8 +96,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
 #warning ACPI uses CMPXCHG, i486 and later hardware
 #endif
 
-static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
-
 /* --------------------------------------------------------------------------
                               Boot-time Configuration
    -------------------------------------------------------------------------- */
@@ -160,6 +157,8 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 struct acpi_mcfg_allocation *pci_mmcfg_config;
 int pci_mmcfg_config_num;
 
+static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
+
 static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
 {
 	if (!strcmp(mcfg->header.oem_id, "SGI"))

arch/x86/kernel/alternative.c

@@ -231,25 +231,25 @@ static void alternatives_smp_lock(u8 **start, u8 **end, u8 *text, u8 *text_end)
 			continue;
 		if (*ptr > text_end)
 			continue;
-		text_poke(*ptr, ((unsigned char []){0xf0}), 1); /* add lock prefix */
+		/* turn DS segment override prefix into lock prefix */
+		text_poke(*ptr, ((unsigned char []){0xf0}), 1);
 	};
 }
 
 static void alternatives_smp_unlock(u8 **start, u8 **end, u8 *text, u8 *text_end)
 {
 	u8 **ptr;
-	char insn[1];
 
 	if (noreplace_smp)
 		return;
 
-	add_nops(insn, 1);
 	for (ptr = start; ptr < end; ptr++) {
 		if (*ptr < text)
 			continue;
 		if (*ptr > text_end)
 			continue;
-		text_poke(*ptr, insn, 1);
+		/* turn lock prefix into DS segment override prefix */
+		text_poke(*ptr, ((unsigned char []){0x3E}), 1);
 	};
 }
 

arch/x86/kernel/aperture_64.c

@@ -455,11 +455,11 @@ out:
 		   force_iommu ||
 		   valid_agp ||
 		   fallback_aper_force) {
-		printk(KERN_ERR
+		printk(KERN_INFO
 			"Your BIOS doesn't leave a aperture memory hole\n");
-		printk(KERN_ERR
+		printk(KERN_INFO
 			"Please enable the IOMMU option in the BIOS setup\n");
-		printk(KERN_ERR
+		printk(KERN_INFO
 			"This costs you %d MB of RAM\n",
 				32 << fallback_aper_order);
 

arch/x86/kernel/apm_32.c

@@ -228,7 +228,6 @@
 #include <linux/suspend.h>
 #include <linux/kthread.h>
 #include <linux/jiffies.h>
-#include <linux/smp_lock.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>

arch/x86/kernel/asm-offsets_64.c

@@ -22,7 +22,7 @@
 
 #define __NO_STUBS 1
 #undef __SYSCALL
-#undef _ASM_X86_64_UNISTD_H_
+#undef ASM_X86__UNISTD_64_H
 #define __SYSCALL(nr, sym) [nr] = 1,
 static char syscalls[] = {
 #include <asm/unistd.h>

arch/x86/kernel/bios_uv.c

@@ -25,11 +25,11 @@ x86_bios_strerror(long status)
 {
 	const char *str;
 	switch (status) {
-	case  0: str = "Call completed without error"; break;
-	case -1: str = "Not implemented"; break;
-	case -2: str = "Invalid argument"; break;
-	case -3: str = "Call completed with error"; break;
-	default: str = "Unknown BIOS status code"; break;
+	case  0: str = "Call completed without error";	break;
+	case -1: str = "Not implemented";		break;
+	case -2: str = "Invalid argument";		break;
+	case -3: str = "Call completed with error";	break;
+	default: str = "Unknown BIOS status code";	break;
 	}
 	return str;
 }

arch/x86/kernel/cpu/common_64.c

@@ -430,6 +430,49 @@ static __init int setup_noclflush(char *arg)
 }
 __setup("noclflush", setup_noclflush);
 
+struct msr_range {
+	unsigned min;
+	unsigned max;
+};
+
+static struct msr_range msr_range_array[] __cpuinitdata = {
+	{ 0x00000000, 0x00000418},
+	{ 0xc0000000, 0xc000040b},
+	{ 0xc0010000, 0xc0010142},
+	{ 0xc0011000, 0xc001103b},
+};
+
+static void __cpuinit print_cpu_msr(void)
+{
+	unsigned index;
+	u64 val;
+	int i;
+	unsigned index_min, index_max;
+
+	for (i = 0; i < ARRAY_SIZE(msr_range_array); i++) {
+		index_min = msr_range_array[i].min;
+		index_max = msr_range_array[i].max;
+		for (index = index_min; index < index_max; index++) {
+			if (rdmsrl_amd_safe(index, &val))
+				continue;
+			printk(KERN_INFO " MSR%08x: %016llx\n", index, val);
+		}
+	}
+}
+
+static int show_msr __cpuinitdata;
+static __init int setup_show_msr(char *arg)
+{
+	int num;
+
+	get_option(&arg, &num);
+
+	if (num > 0)
+		show_msr = num;
+	return 1;
+}
+__setup("show_msr=", setup_show_msr);
+
 void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
 {
 	if (c->x86_model_id[0])
@@ -439,6 +482,14 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
 		printk(KERN_CONT " stepping %02x\n", c->x86_mask);
 	else
 		printk(KERN_CONT "\n");
+
+#ifdef CONFIG_SMP
+	if (c->cpu_index < show_msr)
+		print_cpu_msr();
+#else
+	if (show_msr)
+		print_cpu_msr();
+#endif
 }
 
 static __init int setup_disablecpuid(char *arg)

arch/x86/kernel/cpu/intel.c

@@ -222,10 +222,11 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 			set_cpu_cap(c, X86_FEATURE_BTS);
 		if (!(l1 & (1<<12)))
 			set_cpu_cap(c, X86_FEATURE_PEBS);
+		ds_init_intel(c);
 	}
 
 	if (cpu_has_bts)
-		ds_init_intel(c);
+		ptrace_bts_init_intel(c);
 
 	/*
 	 * See if we have a good local APIC by checking for buggy Pentia,

arch/x86/kernel/cpu/mtrr/generic.c

@@ -401,12 +401,7 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base,
 		tmp |= ~((1<<(hi - 1)) - 1);
 
 		if (tmp != mask_lo) {
-			static int once = 1;
-
-			if (once) {
-				printk(KERN_INFO "mtrr: your BIOS has set up an incorrect mask, fixing it up.\n");
-				once = 0;
-			}
+			WARN_ONCE(1, KERN_INFO "mtrr: your BIOS has set up an incorrect mask, fixing it up.\n");
 			mask_lo = tmp;
 		}
 	}

arch/x86/kernel/cpu/mtrr/if.c

@@ -405,9 +405,9 @@ static int mtrr_seq_show(struct seq_file *seq, void *offset)
 			}
 			/* RED-PEN: base can be > 32bit */ 
 			len += seq_printf(seq, 
-				   "reg%02i: base=0x%05lx000 (%4luMB), size=%4lu%cB: %s, count=%d\n",
+				   "reg%02i: base=0x%06lx000 (%5luMB), size=%5lu%cB, count=%d: %s\n",
 			     i, base, base >> (20 - PAGE_SHIFT), size, factor,
-			     mtrr_attrib_to_str(type), mtrr_usage_table[i]);
+			     mtrr_usage_table[i], mtrr_attrib_to_str(type));
 		}
 	}
 	return 0;

arch/x86/kernel/cpu/mtrr/main.c

@@ -729,7 +729,7 @@ struct var_mtrr_range_state {
 	mtrr_type type;
 };
 
-struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
+static struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
 static int __initdata debug_print;
 
 static int __init
@@ -759,7 +759,8 @@ x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
 	/* take out UC ranges */
 	for (i = 0; i < num_var_ranges; i++) {
 		type = range_state[i].type;
-		if (type != MTRR_TYPE_UNCACHABLE)
+		if (type != MTRR_TYPE_UNCACHABLE &&
+		    type != MTRR_TYPE_WRPROT)
 			continue;
 		size = range_state[i].size_pfn;
 		if (!size)
@@ -836,6 +837,13 @@ static int __init enable_mtrr_cleanup_setup(char *str)
 }
 early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup);
 
+static int __init mtrr_cleanup_debug_setup(char *str)
+{
+	debug_print = 1;
+	return 0;
+}
+early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup);
+
 struct var_mtrr_state {
 	unsigned long	range_startk;
 	unsigned long	range_sizek;
@@ -898,6 +906,27 @@ set_var_mtrr_all(unsigned int address_bits)
 	}
 }
 
+static unsigned long to_size_factor(unsigned long sizek, char *factorp)
+{
+	char factor;
+	unsigned long base = sizek;
+
+	if (base & ((1<<10) - 1)) {
+		/* not MB alignment */
+		factor = 'K';
+	} else if (base & ((1<<20) - 1)){
+		factor = 'M';
+		base >>= 10;
+	} else {
+		factor = 'G';
+		base >>= 20;
+	}
+
+	*factorp = factor;
+
+	return base;
+}
+
 static unsigned int __init
 range_to_mtrr(unsigned int reg, unsigned long range_startk,
 	      unsigned long range_sizek, unsigned char type)
@@ -919,13 +948,21 @@ range_to_mtrr(unsigned int reg, unsigned long range_startk,
 			align = max_align;
 
 		sizek = 1 << align;
-		if (debug_print)
+		if (debug_print) {
+			char start_factor = 'K', size_factor = 'K';
+			unsigned long start_base, size_base;
+
+			start_base = to_size_factor(range_startk, &start_factor),
+			size_base = to_size_factor(sizek, &size_factor),
+
 			printk(KERN_DEBUG "Setting variable MTRR %d, "
-				"base: %ldMB, range: %ldMB, type %s\n",
-				reg, range_startk >> 10, sizek >> 10,
+				"base: %ld%cB, range: %ld%cB, type %s\n",
+				reg, start_base, start_factor,
+				size_base, size_factor,
 				(type == MTRR_TYPE_UNCACHABLE)?"UC":
 				    ((type == MTRR_TYPE_WRBACK)?"WB":"Other")
 				);
+		}
 		save_var_mtrr(reg++, range_startk, sizek, type);
 		range_startk += sizek;
 		range_sizek -= sizek;
@@ -970,6 +1007,8 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 	/* try to append some small hole */
 	range0_basek = state->range_startk;
 	range0_sizek = ALIGN(state->range_sizek, chunk_sizek);
+
+	/* no increase */
 	if (range0_sizek == state->range_sizek) {
 		if (debug_print)
 			printk(KERN_DEBUG "rangeX: %016lx - %016lx\n",
@@ -980,13 +1019,40 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 		return 0;
 	}
 
-	range0_sizek -= chunk_sizek;
-	if (range0_sizek && sizek) {
-	    while (range0_basek + range0_sizek > (basek + sizek)) {
-		range0_sizek -= chunk_sizek;
-		if (!range0_sizek)
-			break;
-	    }
+	/* only cut back, when it is not the last */
+	if (sizek) {
+		while (range0_basek + range0_sizek > (basek + sizek)) {
+			if (range0_sizek >= chunk_sizek)
+				range0_sizek -= chunk_sizek;
+			else
+				range0_sizek = 0;
+
+			if (!range0_sizek)
+				break;
+		}
+	}
+
+second_try:
+	range_basek = range0_basek + range0_sizek;
+
+	/* one hole in the middle */
+	if (range_basek > basek && range_basek <= (basek + sizek))
+		second_sizek = range_basek - basek;
+
+	if (range0_sizek > state->range_sizek) {
+
+		/* one hole in middle or at end */
+		hole_sizek = range0_sizek - state->range_sizek - second_sizek;
+
+		/* hole size should be less than half of range0 size */
+		if (hole_sizek >= (range0_sizek >> 1) &&
+		    range0_sizek >= chunk_sizek) {
+			range0_sizek -= chunk_sizek;
+			second_sizek = 0;
+			hole_sizek = 0;
+
+			goto second_try;
+		}
 	}
 
 	if (range0_sizek) {
@@ -996,50 +1062,28 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 				(range0_basek + range0_sizek)<<10);
 		state->reg = range_to_mtrr(state->reg, range0_basek,
 				range0_sizek, MTRR_TYPE_WRBACK);
-
-	}
-
-	range_basek = range0_basek + range0_sizek;
-	range_sizek = chunk_sizek;
-
-	if (range_basek + range_sizek > basek &&
-	    range_basek + range_sizek <= (basek + sizek)) {
-		/* one hole */
-		second_basek = basek;
-		second_sizek = range_basek + range_sizek - basek;
 	}
 
-	/* if last piece, only could one hole near end */
-	if ((second_basek || !basek) &&
-	    range_sizek - (state->range_sizek - range0_sizek) - second_sizek <
-	    (chunk_sizek >> 1)) {
-		/*
-		 * one hole in middle (second_sizek is 0) or at end
-		 * (second_sizek is 0 )
-		 */
-		hole_sizek = range_sizek - (state->range_sizek - range0_sizek)
-				 - second_sizek;
-		hole_basek = range_basek + range_sizek - hole_sizek
-				 - second_sizek;
-	} else {
-		/* fallback for big hole, or several holes */
+	if (range0_sizek < state->range_sizek) {
+		/* need to handle left over */
 		range_sizek = state->range_sizek - range0_sizek;
-		second_basek = 0;
-		second_sizek = 0;
+
+		if (debug_print)
+			printk(KERN_DEBUG "range: %016lx - %016lx\n",
+				 range_basek<<10,
+				 (range_basek + range_sizek)<<10);
+		state->reg = range_to_mtrr(state->reg, range_basek,
+				 range_sizek, MTRR_TYPE_WRBACK);
 	}
 
-	if (debug_print)
-		printk(KERN_DEBUG "range: %016lx - %016lx\n", range_basek<<10,
-			 (range_basek + range_sizek)<<10);
-	state->reg = range_to_mtrr(state->reg, range_basek, range_sizek,
-					 MTRR_TYPE_WRBACK);
 	if (hole_sizek) {
+		hole_basek = range_basek - hole_sizek - second_sizek;
 		if (debug_print)
 			printk(KERN_DEBUG "hole: %016lx - %016lx\n",
-				 hole_basek<<10, (hole_basek + hole_sizek)<<10);
-		state->reg = range_to_mtrr(state->reg, hole_basek, hole_sizek,
-						 MTRR_TYPE_UNCACHABLE);
-
+				 hole_basek<<10,
+				 (hole_basek + hole_sizek)<<10);
+		state->reg = range_to_mtrr(state->reg, hole_basek,
+				 hole_sizek, MTRR_TYPE_UNCACHABLE);
 	}
 
 	return second_sizek;
@@ -1154,11 +1198,11 @@ struct mtrr_cleanup_result {
 };
 
 /*
- * gran_size: 1M, 2M, ..., 2G
- * chunk size: gran_size, ..., 4G
- * so we need (2+13)*6
+ * gran_size: 64K, 128K, 256K, 512K, 1M, 2M, ..., 2G
+ * chunk size: gran_size, ..., 2G
+ * so we need (1+16)*8
  */
-#define NUM_RESULT	90
+#define NUM_RESULT	136
 #define PSHIFT		(PAGE_SHIFT - 10)
 
 static struct mtrr_cleanup_result __initdata result[NUM_RESULT];
@@ -1168,13 +1212,14 @@ static unsigned long __initdata min_loss_pfn[RANGE_NUM];
 static int __init mtrr_cleanup(unsigned address_bits)
 {
 	unsigned long extra_remove_base, extra_remove_size;
-	unsigned long i, base, size, def, dummy;
+	unsigned long base, size, def, dummy;
 	mtrr_type type;
 	int nr_range, nr_range_new;
 	u64 chunk_size, gran_size;
 	unsigned long range_sums, range_sums_new;
 	int index_good;
 	int num_reg_good;
+	int i;
 
 	/* extra one for all 0 */
 	int num[MTRR_NUM_TYPES + 1];
@@ -1204,6 +1249,8 @@ static int __init mtrr_cleanup(unsigned address_bits)
 			continue;
 		if (!size)
 			type = MTRR_NUM_TYPES;
+		if (type == MTRR_TYPE_WRPROT)
+			type = MTRR_TYPE_UNCACHABLE;
 		num[type]++;
 	}
 
@@ -1216,23 +1263,57 @@ static int __init mtrr_cleanup(unsigned address_bits)
 		num_var_ranges - num[MTRR_NUM_TYPES])
 		return 0;
 
+	/* print original var MTRRs at first, for debugging: */
+	printk(KERN_DEBUG "original variable MTRRs\n");
+	for (i = 0; i < num_var_ranges; i++) {
+		char start_factor = 'K', size_factor = 'K';
+		unsigned long start_base, size_base;
+
+		size_base = range_state[i].size_pfn << (PAGE_SHIFT - 10);
+		if (!size_base)
+			continue;
+
+		size_base = to_size_factor(size_base, &size_factor),
+		start_base = range_state[i].base_pfn << (PAGE_SHIFT - 10);
+		start_base = to_size_factor(start_base, &start_factor),
+		type = range_state[i].type;
+
+		printk(KERN_DEBUG "reg %d, base: %ld%cB, range: %ld%cB, type %s\n",
+			i, start_base, start_factor,
+			size_base, size_factor,
+			(type == MTRR_TYPE_UNCACHABLE) ? "UC" :
+			    ((type == MTRR_TYPE_WRPROT) ? "WP" :
+			     ((type == MTRR_TYPE_WRBACK) ? "WB" : "Other"))
+			);
+	}
+
 	memset(range, 0, sizeof(range));
 	extra_remove_size = 0;
-	if (mtrr_tom2) {
-		extra_remove_base = 1 << (32 - PAGE_SHIFT);
+	extra_remove_base = 1 << (32 - PAGE_SHIFT);
+	if (mtrr_tom2)
 		extra_remove_size =
 			(mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base;
-	}
 	nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base,
 					  extra_remove_size);
+	/*
+	 * [0, 1M) should always be coverred by var mtrr with WB
+	 * and fixed mtrrs should take effective before var mtrr for it
+	 */
+	nr_range = add_range_with_merge(range, nr_range, 0,
+					(1ULL<<(20 - PAGE_SHIFT)) - 1);
+	/* sort the ranges */
+	sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL);
+
 	range_sums = sum_ranges(range, nr_range);
 	printk(KERN_INFO "total RAM coverred: %ldM\n",
 	       range_sums >> (20 - PAGE_SHIFT));
 
 	if (mtrr_chunk_size && mtrr_gran_size) {
 		int num_reg;
+		char gran_factor, chunk_factor, lose_factor;
+		unsigned long gran_base, chunk_base, lose_base;
 
-		debug_print = 1;
+		debug_print++;
 		/* convert ranges to var ranges state */
 		num_reg = x86_setup_var_mtrrs(range, nr_range, mtrr_chunk_size,
 					      mtrr_gran_size);
@@ -1256,34 +1337,48 @@ static int __init mtrr_cleanup(unsigned address_bits)
 			result[i].lose_cover_sizek =
 				(range_sums - range_sums_new) << PSHIFT;
 
-		printk(KERN_INFO "%sgran_size: %ldM \tchunk_size: %ldM \t",
-			 result[i].bad?"*BAD*":" ", result[i].gran_sizek >> 10,
-			 result[i].chunk_sizek >> 10);
-		printk(KERN_CONT "num_reg: %d  \tlose cover RAM: %s%ldM \n",
+		gran_base = to_size_factor(result[i].gran_sizek, &gran_factor),
+		chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor),
+		lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor),
+		printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t",
+			 result[i].bad?"*BAD*":" ",
+			 gran_base, gran_factor, chunk_base, chunk_factor);
+		printk(KERN_CONT "num_reg: %d  \tlose cover RAM: %s%ld%c\n",
 			 result[i].num_reg, result[i].bad?"-":"",
-			 result[i].lose_cover_sizek >> 10);
+			 lose_base, lose_factor);
 		if (!result[i].bad) {
 			set_var_mtrr_all(address_bits);
 			return 1;
 		}
 		printk(KERN_INFO "invalid mtrr_gran_size or mtrr_chunk_size, "
 		       "will find optimal one\n");
-		debug_print = 0;
+		debug_print--;
 		memset(result, 0, sizeof(result[0]));
 	}
 
 	i = 0;
 	memset(min_loss_pfn, 0xff, sizeof(min_loss_pfn));
 	memset(result, 0, sizeof(result));
-	for (gran_size = (1ULL<<20); gran_size < (1ULL<<32); gran_size <<= 1) {
-		for (chunk_size = gran_size; chunk_size < (1ULL<<33);
+	for (gran_size = (1ULL<<16); gran_size < (1ULL<<32); gran_size <<= 1) {
+		char gran_factor;
+		unsigned long gran_base;
+
+		if (debug_print)
+			gran_base = to_size_factor(gran_size >> 10, &gran_factor);
+
+		for (chunk_size = gran_size; chunk_size < (1ULL<<32);
 		     chunk_size <<= 1) {
 			int num_reg;
 
-			if (debug_print)
-				printk(KERN_INFO
-			       "\ngran_size: %lldM   chunk_size_size: %lldM\n",
-				       gran_size >> 20, chunk_size >> 20);
+			if (debug_print) {
+				char chunk_factor;
+				unsigned long chunk_base;
+
+				chunk_base = to_size_factor(chunk_size>>10, &chunk_factor),
+				printk(KERN_INFO "\n");
+				printk(KERN_INFO "gran_size: %ld%c   chunk_size: %ld%c \n",
+				       gran_base, gran_factor, chunk_base, chunk_factor);
+			}
 			if (i >= NUM_RESULT)
 				continue;
 
@@ -1326,12 +1421,18 @@ static int __init mtrr_cleanup(unsigned address_bits)
 
 	/* print out all */
 	for (i = 0; i < NUM_RESULT; i++) {
-		printk(KERN_INFO "%sgran_size: %ldM \tchunk_size: %ldM \t",
-		       result[i].bad?"*BAD* ":" ", result[i].gran_sizek >> 10,
-		       result[i].chunk_sizek >> 10);
-		printk(KERN_CONT "num_reg: %d \tlose RAM: %s%ldM\n",
-		       result[i].num_reg, result[i].bad?"-":"",
-		       result[i].lose_cover_sizek >> 10);
+		char gran_factor, chunk_factor, lose_factor;
+		unsigned long gran_base, chunk_base, lose_base;
+
+		gran_base = to_size_factor(result[i].gran_sizek, &gran_factor),
+		chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor),
+		lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor),
+		printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t",
+			 result[i].bad?"*BAD*":" ",
+			 gran_base, gran_factor, chunk_base, chunk_factor);
+		printk(KERN_CONT "num_reg: %d  \tlose cover RAM: %s%ld%c\n",
+			 result[i].num_reg, result[i].bad?"-":"",
+			 lose_base, lose_factor);
 	}
 
 	/* try to find the optimal index */
@@ -1339,10 +1440,8 @@ static int __init mtrr_cleanup(unsigned address_bits)
 		nr_mtrr_spare_reg = num_var_ranges - 1;
 	num_reg_good = -1;
 	for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) {
-		if (!min_loss_pfn[i]) {
+		if (!min_loss_pfn[i])
 			num_reg_good = i;
-			break;
-		}
 	}
 
 	index_good = -1;
@@ -1358,21 +1457,26 @@ static int __init mtrr_cleanup(unsigned address_bits)
 	}
 
 	if (index_good != -1) {
+		char gran_factor, chunk_factor, lose_factor;
+		unsigned long gran_base, chunk_base, lose_base;
+
 		printk(KERN_INFO "Found optimal setting for mtrr clean up\n");
 		i = index_good;
-		printk(KERN_INFO "gran_size: %ldM \tchunk_size: %ldM \t",
-				result[i].gran_sizek >> 10,
-				result[i].chunk_sizek >> 10);
-		printk(KERN_CONT "num_reg: %d \tlose RAM: %ldM\n",
-				result[i].num_reg,
-				result[i].lose_cover_sizek >> 10);
+		gran_base = to_size_factor(result[i].gran_sizek, &gran_factor),
+		chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor),
+		lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor),
+		printk(KERN_INFO "gran_size: %ld%c \tchunk_size: %ld%c \t",
+			 gran_base, gran_factor, chunk_base, chunk_factor);
+		printk(KERN_CONT "num_reg: %d  \tlose RAM: %ld%c\n",
+			 result[i].num_reg, lose_base, lose_factor);
 		/* convert ranges to var ranges state */
 		chunk_size = result[i].chunk_sizek;
 		chunk_size <<= 10;
 		gran_size = result[i].gran_sizek;
 		gran_size <<= 10;
-		debug_print = 1;
+		debug_print++;
 		x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size);
+		debug_print--;
 		set_var_mtrr_all(address_bits);
 		return 1;
 	}

arch/x86/kernel/cpu/perfctr-watchdog.c

@@ -295,13 +295,19 @@ static int setup_k7_watchdog(unsigned nmi_hz)
 	/* setup the timer */
 	wrmsr(evntsel_msr, evntsel, 0);
 	write_watchdog_counter(perfctr_msr, "K7_PERFCTR0",nmi_hz);
-	apic_write(APIC_LVTPC, APIC_DM_NMI);
-	evntsel |= K7_EVNTSEL_ENABLE;
-	wrmsr(evntsel_msr, evntsel, 0);
 
+	/* initialize the wd struct before enabling */
 	wd->perfctr_msr = perfctr_msr;
 	wd->evntsel_msr = evntsel_msr;
 	wd->cccr_msr = 0;  /* unused */
+
+	/* ok, everything is initialized, announce that we're set */
+	cpu_nmi_set_wd_enabled();
+
+	apic_write(APIC_LVTPC, APIC_DM_NMI);
+	evntsel |= K7_EVNTSEL_ENABLE;
+	wrmsr(evntsel_msr, evntsel, 0);
+
 	return 1;
 }
 
@@ -379,13 +385,19 @@ static int setup_p6_watchdog(unsigned nmi_hz)
 	wrmsr(evntsel_msr, evntsel, 0);
 	nmi_hz = adjust_for_32bit_ctr(nmi_hz);
 	write_watchdog_counter32(perfctr_msr, "P6_PERFCTR0",nmi_hz);
-	apic_write(APIC_LVTPC, APIC_DM_NMI);
-	evntsel |= P6_EVNTSEL0_ENABLE;
-	wrmsr(evntsel_msr, evntsel, 0);
 
+	/* initialize the wd struct before enabling */
 	wd->perfctr_msr = perfctr_msr;
 	wd->evntsel_msr = evntsel_msr;
 	wd->cccr_msr = 0;  /* unused */
+
+	/* ok, everything is initialized, announce that we're set */
+	cpu_nmi_set_wd_enabled();
+
+	apic_write(APIC_LVTPC, APIC_DM_NMI);
+	evntsel |= P6_EVNTSEL0_ENABLE;
+	wrmsr(evntsel_msr, evntsel, 0);
+
 	return 1;
 }
 
@@ -432,6 +444,27 @@ static const struct wd_ops p6_wd_ops = {
 #define P4_CCCR_ENABLE		(1 << 12)
 #define P4_CCCR_OVF 		(1 << 31)
 
+#define P4_CONTROLS 18
+static unsigned int p4_controls[18] = {
+	MSR_P4_BPU_CCCR0,
+	MSR_P4_BPU_CCCR1,
+	MSR_P4_BPU_CCCR2,
+	MSR_P4_BPU_CCCR3,
+	MSR_P4_MS_CCCR0,
+	MSR_P4_MS_CCCR1,
+	MSR_P4_MS_CCCR2,
+	MSR_P4_MS_CCCR3,
+	MSR_P4_FLAME_CCCR0,
+	MSR_P4_FLAME_CCCR1,
+	MSR_P4_FLAME_CCCR2,
+	MSR_P4_FLAME_CCCR3,
+	MSR_P4_IQ_CCCR0,
+	MSR_P4_IQ_CCCR1,
+	MSR_P4_IQ_CCCR2,
+	MSR_P4_IQ_CCCR3,
+	MSR_P4_IQ_CCCR4,
+	MSR_P4_IQ_CCCR5,
+};
 /*
  * Set up IQ_COUNTER0 to behave like a clock, by having IQ_CCCR0 filter
  * CRU_ESCR0 (with any non-null event selector) through a complemented
@@ -473,6 +506,26 @@ static int setup_p4_watchdog(unsigned nmi_hz)
 		evntsel_msr = MSR_P4_CRU_ESCR0;
 		cccr_msr = MSR_P4_IQ_CCCR0;
 		cccr_val = P4_CCCR_OVF_PMI0 | P4_CCCR_ESCR_SELECT(4);
+
+		/*
+		 * If we're on the kdump kernel or other situation, we may
+		 * still have other performance counter registers set to
+		 * interrupt and they'll keep interrupting forever because
+		 * of the P4_CCCR_OVF quirk. So we need to ACK all the
+		 * pending interrupts and disable all the registers here,
+		 * before reenabling the NMI delivery. Refer to p4_rearm()
+		 * about the P4_CCCR_OVF quirk.
+		 */
+		if (reset_devices) {
+			unsigned int low, high;
+			int i;
+
+			for (i = 0; i < P4_CONTROLS; i++) {
+				rdmsr(p4_controls[i], low, high);
+				low &= ~(P4_CCCR_ENABLE | P4_CCCR_OVF);
+				wrmsr(p4_controls[i], low, high);
+			}
+		}
 	} else {
 		/* logical cpu 1 */
 		perfctr_msr = MSR_P4_IQ_PERFCTR1;
@@ -499,12 +552,17 @@ static int setup_p4_watchdog(unsigned nmi_hz)
 	wrmsr(evntsel_msr, evntsel, 0);
 	wrmsr(cccr_msr, cccr_val, 0);
 	write_watchdog_counter(perfctr_msr, "P4_IQ_COUNTER0", nmi_hz);
-	apic_write(APIC_LVTPC, APIC_DM_NMI);
-	cccr_val |= P4_CCCR_ENABLE;
-	wrmsr(cccr_msr, cccr_val, 0);
+
 	wd->perfctr_msr = perfctr_msr;
 	wd->evntsel_msr = evntsel_msr;
 	wd->cccr_msr = cccr_msr;
+
+	/* ok, everything is initialized, announce that we're set */
+	cpu_nmi_set_wd_enabled();
+
+	apic_write(APIC_LVTPC, APIC_DM_NMI);
+	cccr_val |= P4_CCCR_ENABLE;
+	wrmsr(cccr_msr, cccr_val, 0);
 	return 1;
 }
 
@@ -620,13 +678,17 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz)
 	wrmsr(evntsel_msr, evntsel, 0);
 	nmi_hz = adjust_for_32bit_ctr(nmi_hz);
 	write_watchdog_counter32(perfctr_msr, "INTEL_ARCH_PERFCTR0", nmi_hz);
-	apic_write(APIC_LVTPC, APIC_DM_NMI);
-	evntsel |= ARCH_PERFMON_EVENTSEL0_ENABLE;
-	wrmsr(evntsel_msr, evntsel, 0);
 
 	wd->perfctr_msr = perfctr_msr;
 	wd->evntsel_msr = evntsel_msr;
 	wd->cccr_msr = 0;  /* unused */
+
+	/* ok, everything is initialized, announce that we're set */
+	cpu_nmi_set_wd_enabled();
+
+	apic_write(APIC_LVTPC, APIC_DM_NMI);
+	evntsel |= ARCH_PERFMON_EVENTSEL0_ENABLE;
+	wrmsr(evntsel_msr, evntsel, 0);
 	intel_arch_wd_ops.checkbit = 1ULL << (eax.split.bit_width - 1);
 	return 1;
 }

arch/x86/kernel/cpuid.c

@@ -36,7 +36,6 @@
 #include <linux/smp_lock.h>
 #include <linux/major.h>
 #include <linux/fs.h>
-#include <linux/smp_lock.h>
 #include <linux/device.h>
 #include <linux/cpu.h>
 #include <linux/notifier.h>

arch/x86/kernel/crash_dump_64.c

@@ -7,9 +7,8 @@
 
 #include <linux/errno.h>
 #include <linux/crash_dump.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
 /**
  * copy_oldmem_page - copy one page from "oldmem"
@@ -25,7 +24,7 @@
  * in the current kernel. We stitch up a pte, similar to kmap_atomic.
  */
 ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
-                               size_t csize, unsigned long offset, int userbuf)
+		size_t csize, unsigned long offset, int userbuf)
 {
 	void  *vaddr;
 
@@ -33,14 +32,16 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 		return 0;
 
 	vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE);
+	if (!vaddr)
+		return -ENOMEM;
 
 	if (userbuf) {
-		if (copy_to_user(buf, (vaddr + offset), csize)) {
+		if (copy_to_user(buf, vaddr + offset, csize)) {
 			iounmap(vaddr);
 			return -EFAULT;
 		}
 	} else
-	memcpy(buf, (vaddr + offset), csize);
+		memcpy(buf, vaddr + offset, csize);
 
 	iounmap(vaddr);
 	return csize;

arch/x86/kernel/efi.c

@@ -414,9 +414,11 @@ void __init efi_init(void)
 	if (memmap.map == NULL)
 		printk(KERN_ERR "Could not map the EFI memory map!\n");
 	memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size);
+
 	if (memmap.desc_size != sizeof(efi_memory_desc_t))
-		printk(KERN_WARNING "Kernel-defined memdesc"
-		       "doesn't match the one from EFI!\n");
+		printk(KERN_WARNING
+		  "Kernel-defined memdesc doesn't match the one from EFI!\n");
+
 	if (add_efi_memmap)
 		do_add_efi_memmap();
 

arch/x86/kernel/entry_64.S

@@ -275,9 +275,9 @@ ENTRY(native_usergs_sysret64)
 ENTRY(ret_from_fork)
 	CFI_DEFAULT_STACK
 	push kernel_eflags(%rip)
-	CFI_ADJUST_CFA_OFFSET 4
+	CFI_ADJUST_CFA_OFFSET 8
 	popf				# reset kernel eflags
-	CFI_ADJUST_CFA_OFFSET -4
+	CFI_ADJUST_CFA_OFFSET -8
 	call schedule_tail
 	GET_THREAD_INFO(%rcx)
 	testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%rcx)

arch/x86/kernel/head64.c

@@ -108,12 +108,11 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	}
 	load_idt((const struct desc_ptr *)&idt_descr);
 
-	early_printk("Kernel alive\n");
+	if (console_loglevel == 10)
+		early_printk("Kernel alive\n");
 
 	x86_64_init_pda();
 
-	early_printk("Kernel really alive\n");
-
 	x86_64_start_reservations(real_mode_data);
 }
 

arch/x86/kernel/ioport.c

@@ -14,6 +14,7 @@
 #include <linux/slab.h>
 #include <linux/thread_info.h>
 #include <linux/syscalls.h>
+#include <asm/syscalls.h>
 
 /* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
 static void set_bitmap(unsigned long *bitmap, unsigned int base,

arch/x86/kernel/ipi.c

@@ -20,6 +20,8 @@
 
 #ifdef CONFIG_X86_32
 #include <mach_apic.h>
+#include <mach_ipi.h>
+
 /*
  * the following functions deal with sending IPIs between CPUs.
  *
@@ -147,7 +149,6 @@ void send_IPI_mask_sequence(cpumask_t mask, int vector)
 }
 
 /* must come after the send_IPI functions above for inlining */
-#include <mach_ipi.h>
 static int convert_apicid_to_cpu(int apic_id)
 {
 	int i;

arch/x86/kernel/irq_32.c

@@ -325,7 +325,7 @@ skip:
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ",
 				per_cpu(irq_stat,j).irq_call_count);
-		seq_printf(p, "  function call interrupts\n");
+		seq_printf(p, "  Function call interrupts\n");
 		seq_printf(p, "TLB: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ",

arch/x86/kernel/irq_64.c

@@ -129,7 +129,7 @@ skip:
 		seq_printf(p, "CAL: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
-		seq_printf(p, "  function call interrupts\n");
+		seq_printf(p, "  Function call interrupts\n");
 		seq_printf(p, "TLB: ");
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);

arch/x86/kernel/kvm.c

@@ -178,7 +178,7 @@ static void kvm_flush_tlb(void)
 	kvm_deferred_mmu_op(&ftlb, sizeof ftlb);
 }
 
-static void kvm_release_pt(u32 pfn)
+static void kvm_release_pt(unsigned long pfn)
 {
 	struct kvm_mmu_op_release_pt rpt = {
 		.header.op = KVM_MMU_OP_RELEASE_PT,

arch/x86/kernel/ldt.c

@@ -18,6 +18,7 @@
 #include <asm/ldt.h>
 #include <asm/desc.h>
 #include <asm/mmu_context.h>
+#include <asm/syscalls.h>
 
 #ifdef CONFIG_SMP
 static void flush_ldt(void *current_mm)

arch/x86/kernel/nmi.c

@@ -299,6 +299,15 @@ void acpi_nmi_disable(void)
 		on_each_cpu(__acpi_nmi_disable, NULL, 1);
 }
 
+/*
+ * This function is called as soon the LAPIC NMI watchdog driver has everything
+ * in place and it's ready to check if the NMIs belong to the NMI watchdog
+ */
+void cpu_nmi_set_wd_enabled(void)
+{
+	__get_cpu_var(wd_enabled) = 1;
+}
+
 void setup_apic_nmi_watchdog(void *unused)
 {
 	if (__get_cpu_var(wd_enabled))
@@ -311,8 +320,6 @@ void setup_apic_nmi_watchdog(void *unused)
 
 	switch (nmi_watchdog) {
 	case NMI_LOCAL_APIC:
-		 /* enable it before to avoid race with handler */
-		__get_cpu_var(wd_enabled) = 1;
 		if (lapic_watchdog_init(nmi_hz) < 0) {
 			__get_cpu_var(wd_enabled) = 0;
 			return;

arch/x86/kernel/olpc.c

@@ -190,12 +190,12 @@ EXPORT_SYMBOL_GPL(olpc_ec_cmd);
 static void __init platform_detect(void)
 {
 	size_t propsize;
-	u32 rev;
+	__be32 rev;
 
 	if (ofw("getprop", 4, 1, NULL, "board-revision-int", &rev, 4,
 			&propsize) || propsize != 4) {
 		printk(KERN_ERR "ofw: getprop call failed!\n");
-		rev = 0;
+		rev = cpu_to_be32(0);
 	}
 	olpc_platform_info.boardrev = be32_to_cpu(rev);
 }
@@ -203,7 +203,7 @@ static void __init platform_detect(void)
 static void __init platform_detect(void)
 {
 	/* stopgap until OFW support is added to the kernel */
-	olpc_platform_info.boardrev = be32_to_cpu(0xc2);
+	olpc_platform_info.boardrev = 0xc2;
 }
 #endif
 

arch/x86/kernel/paravirt.c

@@ -330,6 +330,7 @@ struct pv_cpu_ops pv_cpu_ops = {
 #endif
 	.wbinvd = native_wbinvd,
 	.read_msr = native_read_msr_safe,
+	.read_msr_amd = native_read_msr_amd_safe,
 	.write_msr = native_write_msr_safe,
 	.read_tsc = native_read_tsc,
 	.read_pmc = native_read_pmc,

arch/x86/kernel/paravirt_patch_32.c

@@ -23,7 +23,7 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf,
 			start = start_##ops##_##x;		\
 			end = end_##ops##_##x;			\
 			goto patch_site
-	switch(type) {
+	switch (type) {
 		PATCH_SITE(pv_irq_ops, irq_disable);
 		PATCH_SITE(pv_irq_ops, irq_enable);
 		PATCH_SITE(pv_irq_ops, restore_fl);

arch/x86/kernel/pci-dma.c

@@ -82,7 +82,7 @@ void __init dma32_reserve_bootmem(void)
 	 * using 512M as goal
 	 */
 	align = 64ULL<<20;
-	size = round_up(dma32_bootmem_size, align);
+	size = roundup(dma32_bootmem_size, align);
 	dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
 				 512ULL<<20);
 	if (dma32_bootmem_ptr)

arch/x86/kernel/pci-gart_64.c

@@ -82,7 +82,8 @@ AGPEXTERN __u32 *agp_gatt_table;
 static unsigned long next_bit;  /* protected by iommu_bitmap_lock */
 static int need_flush;		/* global flush state. set for each gart wrap */
 
-static unsigned long alloc_iommu(struct device *dev, int size)
+static unsigned long alloc_iommu(struct device *dev, int size,
+				 unsigned long align_mask)
 {
 	unsigned long offset, flags;
 	unsigned long boundary_size;
@@ -90,16 +91,17 @@ static unsigned long alloc_iommu(struct device *dev, int size)
 
 	base_index = ALIGN(iommu_bus_base & dma_get_seg_boundary(dev),
 			   PAGE_SIZE) >> PAGE_SHIFT;
-	boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
+	boundary_size = ALIGN((unsigned long long)dma_get_seg_boundary(dev) + 1,
 			      PAGE_SIZE) >> PAGE_SHIFT;
 
 	spin_lock_irqsave(&iommu_bitmap_lock, flags);
 	offset = iommu_area_alloc(iommu_gart_bitmap, iommu_pages, next_bit,
-				  size, base_index, boundary_size, 0);
+				  size, base_index, boundary_size, align_mask);
 	if (offset == -1) {
 		need_flush = 1;
 		offset = iommu_area_alloc(iommu_gart_bitmap, iommu_pages, 0,
-					  size, base_index, boundary_size, 0);
+					  size, base_index, boundary_size,
+					  align_mask);
 	}
 	if (offset != -1) {
 		next_bit = offset+size;
@@ -236,10 +238,10 @@ nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
  * Caller needs to check if the iommu is needed and flush.
  */
 static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
-				size_t size, int dir)
+				size_t size, int dir, unsigned long align_mask)
 {
 	unsigned long npages = iommu_num_pages(phys_mem, size);
-	unsigned long iommu_page = alloc_iommu(dev, npages);
+	unsigned long iommu_page = alloc_iommu(dev, npages, align_mask);
 	int i;
 
 	if (iommu_page == -1) {
@@ -262,7 +264,11 @@ static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
 static dma_addr_t
 gart_map_simple(struct device *dev, phys_addr_t paddr, size_t size, int dir)
 {
-	dma_addr_t map = dma_map_area(dev, paddr, size, dir);
+	dma_addr_t map;
+	unsigned long align_mask;
+
+	align_mask = (1UL << get_order(size)) - 1;
+	map = dma_map_area(dev, paddr, size, dir, align_mask);
 
 	flush_gart();
 
@@ -281,7 +287,8 @@ gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir)
 	if (!need_iommu(dev, paddr, size))
 		return paddr;
 
-	bus = gart_map_simple(dev, paddr, size, dir);
+	bus = dma_map_area(dev, paddr, size, dir, 0);
+	flush_gart();
 
 	return bus;
 }
@@ -340,7 +347,7 @@ static int dma_map_sg_nonforce(struct device *dev, struct scatterlist *sg,
 		unsigned long addr = sg_phys(s);
 
 		if (nonforced_iommu(dev, addr, s->length)) {
-			addr = dma_map_area(dev, addr, s->length, dir);
+			addr = dma_map_area(dev, addr, s->length, dir, 0);
 			if (addr == bad_dma_address) {
 				if (i > 0)
 					gart_unmap_sg(dev, sg, i, dir);
@@ -362,7 +369,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start,
 			  int nelems, struct scatterlist *sout,
 			  unsigned long pages)
 {
-	unsigned long iommu_start = alloc_iommu(dev, pages);
+	unsigned long iommu_start = alloc_iommu(dev, pages, 0);
 	unsigned long iommu_page = iommu_start;
 	struct scatterlist *s;
 	int i;

arch/x86/kernel/pcspeaker.c

@@ -1,20 +1,13 @@
 #include <linux/platform_device.h>
-#include <linux/errno.h>
+#include <linux/err.h>
 #include <linux/init.h>
 
 static __init int add_pcspkr(void)
 {
 	struct platform_device *pd;
-	int ret;
 
-	pd = platform_device_alloc("pcspkr", -1);
-	if (!pd)
-		return -ENOMEM;
+	pd = platform_device_register_simple("pcspkr", -1, NULL, 0);
 
-	ret = platform_device_add(pd);
-	if (ret)
-		platform_device_put(pd);
-
-	return ret;
+	return IS_ERR(pd) ? PTR_ERR(pd) : 0;
 }
 device_initcall(add_pcspkr);

arch/x86/kernel/process.c

@@ -185,7 +185,8 @@ static void mwait_idle(void)
 static void poll_idle(void)
 {
 	local_irq_enable();
-	cpu_relax();
+	while (!need_resched())
+		cpu_relax();
 }
 
 /*

arch/x86/kernel/process_32.c

@@ -37,6 +37,7 @@
 #include <linux/tick.h>
 #include <linux/percpu.h>
 #include <linux/prctl.h>
+#include <linux/dmi.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -56,6 +57,8 @@
 #include <asm/cpu.h>
 #include <asm/kdebug.h>
 #include <asm/idle.h>
+#include <asm/syscalls.h>
+#include <asm/smp.h>
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
 
@@ -161,6 +164,7 @@ void __show_registers(struct pt_regs *regs, int all)
 	unsigned long d0, d1, d2, d3, d6, d7;
 	unsigned long sp;
 	unsigned short ss, gs;
+	const char *board;
 
 	if (user_mode_vm(regs)) {
 		sp = regs->sp;
@@ -173,11 +177,15 @@ void __show_registers(struct pt_regs *regs, int all)
 	}
 
 	printk("\n");
-	printk("Pid: %d, comm: %s %s (%s %.*s)\n",
+
+	board = dmi_get_system_info(DMI_PRODUCT_NAME);
+	if (!board)
+		board = "";
+	printk("Pid: %d, comm: %s %s (%s %.*s) %s\n",
 			task_pid_nr(current), current->comm,
 			print_tainted(), init_utsname()->release,
 			(int)strcspn(init_utsname()->version, " "),
-			init_utsname()->version);
+			init_utsname()->version, board);
 
 	printk("EIP: %04x:[<%08lx>] EFLAGS: %08lx CPU: %d\n",
 			(u16)regs->cs, regs->ip, regs->flags,
@@ -277,6 +285,14 @@ void exit_thread(void)
 		tss->x86_tss.io_bitmap_base = INVALID_IO_BITMAP_OFFSET;
 		put_cpu();
 	}
+#ifdef CONFIG_X86_DS
+	/* Free any DS contexts that have not been properly released. */
+	if (unlikely(current->thread.ds_ctx)) {
+		/* we clear debugctl to make sure DS is not used. */
+		update_debugctlmsr(0);
+		ds_free(current->thread.ds_ctx);
+	}
+#endif /* CONFIG_X86_DS */
 }
 
 void flush_thread(void)
@@ -438,6 +454,35 @@ int set_tsc_mode(unsigned int val)
 	return 0;
 }
 
+#ifdef CONFIG_X86_DS
+static int update_debugctl(struct thread_struct *prev,
+			struct thread_struct *next, unsigned long debugctl)
+{
+	unsigned long ds_prev = 0;
+	unsigned long ds_next = 0;
+
+	if (prev->ds_ctx)
+		ds_prev = (unsigned long)prev->ds_ctx->ds;
+	if (next->ds_ctx)
+		ds_next = (unsigned long)next->ds_ctx->ds;
+
+	if (ds_next != ds_prev) {
+		/* we clear debugctl to make sure DS
+		 * is not in use when we change it */
+		debugctl = 0;
+		update_debugctlmsr(0);
+		wrmsr(MSR_IA32_DS_AREA, ds_next, 0);
+	}
+	return debugctl;
+}
+#else
+static int update_debugctl(struct thread_struct *prev,
+			struct thread_struct *next, unsigned long debugctl)
+{
+	return debugctl;
+}
+#endif /* CONFIG_X86_DS */
+
 static noinline void
 __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
 		 struct tss_struct *tss)
@@ -448,14 +493,7 @@ __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
 	prev = &prev_p->thread;
 	next = &next_p->thread;
 
-	debugctl = prev->debugctlmsr;
-	if (next->ds_area_msr != prev->ds_area_msr) {
-		/* we clear debugctl to make sure DS
-		 * is not in use when we change it */
-		debugctl = 0;
-		update_debugctlmsr(0);
-		wrmsr(MSR_IA32_DS_AREA, next->ds_area_msr, 0);
-	}
+	debugctl = update_debugctl(prev, next, prev->debugctlmsr);
 
 	if (next->debugctlmsr != debugctl)
 		update_debugctlmsr(next->debugctlmsr);
@@ -479,13 +517,13 @@ __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
 			hard_enable_TSC();
 	}
 
-#ifdef X86_BTS
+#ifdef CONFIG_X86_PTRACE_BTS
 	if (test_tsk_thread_flag(prev_p, TIF_BTS_TRACE_TS))
 		ptrace_bts_take_timestamp(prev_p, BTS_TASK_DEPARTS);
 
 	if (test_tsk_thread_flag(next_p, TIF_BTS_TRACE_TS))
 		ptrace_bts_take_timestamp(next_p, BTS_TASK_ARRIVES);
-#endif
+#endif /* CONFIG_X86_PTRACE_BTS */
 
 
 	if (!test_tsk_thread_flag(next_p, TIF_IO_BITMAP)) {

arch/x86/kernel/process_64.c

@@ -37,11 +37,11 @@
 #include <linux/kdebug.h>
 #include <linux/tick.h>
 #include <linux/prctl.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
-#include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
-#include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/i387.h>
 #include <asm/mmu_context.h>
@@ -51,6 +51,7 @@
 #include <asm/proto.h>
 #include <asm/ia32.h>
 #include <asm/idle.h>
+#include <asm/syscalls.h>
 
 asmlinkage extern void ret_from_fork(void);
 
@@ -88,7 +89,7 @@ void exit_idle(void)
 #ifdef CONFIG_HOTPLUG_CPU
 DECLARE_PER_CPU(int, cpu_state);
 
-#include <asm/nmi.h>
+#include <linux/nmi.h>
 /* We halt the CPU with physical CPU hotplug */
 static inline void play_dead(void)
 {
@@ -153,7 +154,7 @@ void cpu_idle(void)
 }
 
 /* Prints also some state that isn't saved in the pt_regs */
-void __show_regs(struct pt_regs * regs)
+void __show_regs(struct pt_regs *regs)
 {
 	unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L, fs, gs, shadowgs;
 	unsigned long d0, d1, d2, d3, d6, d7;
@@ -162,59 +163,61 @@ void __show_regs(struct pt_regs * regs)
 
 	printk("\n");
 	print_modules();
-	printk("Pid: %d, comm: %.20s %s %s %.*s\n",
+	printk(KERN_INFO "Pid: %d, comm: %.20s %s %s %.*s\n",
 		current->pid, current->comm, print_tainted(),
 		init_utsname()->release,
 		(int)strcspn(init_utsname()->version, " "),
 		init_utsname()->version);
-	printk("RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->ip);
+	printk(KERN_INFO "RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->ip);
 	printk_address(regs->ip, 1);
-	printk("RSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss, regs->sp,
-		regs->flags);
-	printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
+	printk(KERN_INFO "RSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss,
+			regs->sp, regs->flags);
+	printk(KERN_INFO "RAX: %016lx RBX: %016lx RCX: %016lx\n",
 	       regs->ax, regs->bx, regs->cx);
-	printk("RDX: %016lx RSI: %016lx RDI: %016lx\n",
+	printk(KERN_INFO "RDX: %016lx RSI: %016lx RDI: %016lx\n",
 	       regs->dx, regs->si, regs->di);
-	printk("RBP: %016lx R08: %016lx R09: %016lx\n",
+	printk(KERN_INFO "RBP: %016lx R08: %016lx R09: %016lx\n",
 	       regs->bp, regs->r8, regs->r9);
-	printk("R10: %016lx R11: %016lx R12: %016lx\n",
-	       regs->r10, regs->r11, regs->r12); 
-	printk("R13: %016lx R14: %016lx R15: %016lx\n",
-	       regs->r13, regs->r14, regs->r15); 
-
-	asm("movl %%ds,%0" : "=r" (ds)); 
-	asm("movl %%cs,%0" : "=r" (cs)); 
-	asm("movl %%es,%0" : "=r" (es)); 
+	printk(KERN_INFO "R10: %016lx R11: %016lx R12: %016lx\n",
+	       regs->r10, regs->r11, regs->r12);
+	printk(KERN_INFO "R13: %016lx R14: %016lx R15: %016lx\n",
+	       regs->r13, regs->r14, regs->r15);
+
+	asm("movl %%ds,%0" : "=r" (ds));
+	asm("movl %%cs,%0" : "=r" (cs));
+	asm("movl %%es,%0" : "=r" (es));
 	asm("movl %%fs,%0" : "=r" (fsindex));
 	asm("movl %%gs,%0" : "=r" (gsindex));
 
 	rdmsrl(MSR_FS_BASE, fs);
-	rdmsrl(MSR_GS_BASE, gs); 
-	rdmsrl(MSR_KERNEL_GS_BASE, shadowgs); 
+	rdmsrl(MSR_GS_BASE, gs);
+	rdmsrl(MSR_KERNEL_GS_BASE, shadowgs);
 
 	cr0 = read_cr0();
 	cr2 = read_cr2();
 	cr3 = read_cr3();
 	cr4 = read_cr4();
 
-	printk("FS:  %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n", 
-	       fs,fsindex,gs,gsindex,shadowgs); 
-	printk("CS:  %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds, es, cr0); 
-	printk("CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4);
+	printk(KERN_INFO "FS:  %016lx(%04x) GS:%016lx(%04x) knlGS:%016lx\n",
+	       fs, fsindex, gs, gsindex, shadowgs);
+	printk(KERN_INFO "CS:  %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds,
+			es, cr0);
+	printk(KERN_INFO "CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3,
+			cr4);
 
 	get_debugreg(d0, 0);
 	get_debugreg(d1, 1);
 	get_debugreg(d2, 2);
-	printk("DR0: %016lx DR1: %016lx DR2: %016lx\n", d0, d1, d2);
+	printk(KERN_INFO "DR0: %016lx DR1: %016lx DR2: %016lx\n", d0, d1, d2);
 	get_debugreg(d3, 3);
 	get_debugreg(d6, 6);
 	get_debugreg(d7, 7);
-	printk("DR3: %016lx DR6: %016lx DR7: %016lx\n", d3, d6, d7);
+	printk(KERN_INFO "DR3: %016lx DR6: %016lx DR7: %016lx\n", d3, d6, d7);
 }
 
 void show_regs(struct pt_regs *regs)
 {
-	printk("CPU %d:", smp_processor_id());
+	printk(KERN_INFO "CPU %d:", smp_processor_id());
 	__show_regs(regs);
 	show_trace(NULL, regs, (void *)(regs + 1), regs->bp);
 }
@@ -240,6 +243,14 @@ void exit_thread(void)
 		t->io_bitmap_max = 0;
 		put_cpu();
 	}
+#ifdef CONFIG_X86_DS
+	/* Free any DS contexts that have not been properly released. */
+	if (unlikely(t->ds_ctx)) {
+		/* we clear debugctl to make sure DS is not used. */
+		update_debugctlmsr(0);
+		ds_free(t->ds_ctx);
+	}
+#endif /* CONFIG_X86_DS */
 }
 
 void flush_thread(void)
@@ -315,10 +326,10 @@ void prepare_to_copy(struct task_struct *tsk)
 
 int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 		unsigned long unused,
-	struct task_struct * p, struct pt_regs * regs)
+	struct task_struct *p, struct pt_regs *regs)
 {
 	int err;
-	struct pt_regs * childregs;
+	struct pt_regs *childregs;
 	struct task_struct *me = current;
 
 	childregs = ((struct pt_regs *)
@@ -363,10 +374,10 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 		if (test_thread_flag(TIF_IA32))
 			err = do_set_thread_area(p, -1,
 				(struct user_desc __user *)childregs->si, 0);
-		else 			
-#endif	 
-			err = do_arch_prctl(p, ARCH_SET_FS, childregs->r8); 
-		if (err) 
+		else
+#endif
+			err = do_arch_prctl(p, ARCH_SET_FS, childregs->r8);
+		if (err)
 			goto out;
 	}
 	err = 0;
@@ -473,13 +484,27 @@ static inline void __switch_to_xtra(struct task_struct *prev_p,
 	next = &next_p->thread;
 
 	debugctl = prev->debugctlmsr;
-	if (next->ds_area_msr != prev->ds_area_msr) {
-		/* we clear debugctl to make sure DS
-		 * is not in use when we change it */
-		debugctl = 0;
-		update_debugctlmsr(0);
-		wrmsrl(MSR_IA32_DS_AREA, next->ds_area_msr);
+
+#ifdef CONFIG_X86_DS
+	{
+		unsigned long ds_prev = 0, ds_next = 0;
+
+		if (prev->ds_ctx)
+			ds_prev = (unsigned long)prev->ds_ctx->ds;
+		if (next->ds_ctx)
+			ds_next = (unsigned long)next->ds_ctx->ds;
+
+		if (ds_next != ds_prev) {
+			/*
+			 * We clear debugctl to make sure DS
+			 * is not in use when we change it:
+			 */
+			debugctl = 0;
+			update_debugctlmsr(0);
+			wrmsrl(MSR_IA32_DS_AREA, ds_next);
+		}
 	}
+#endif /* CONFIG_X86_DS */
 
 	if (next->debugctlmsr != debugctl)
 		update_debugctlmsr(next->debugctlmsr);
@@ -517,13 +542,13 @@ static inline void __switch_to_xtra(struct task_struct *prev_p,
 		memset(tss->io_bitmap, 0xff, prev->io_bitmap_max);
 	}
 
-#ifdef X86_BTS
+#ifdef CONFIG_X86_PTRACE_BTS
 	if (test_tsk_thread_flag(prev_p, TIF_BTS_TRACE_TS))
 		ptrace_bts_take_timestamp(prev_p, BTS_TASK_DEPARTS);
 
 	if (test_tsk_thread_flag(next_p, TIF_BTS_TRACE_TS))
 		ptrace_bts_take_timestamp(next_p, BTS_TASK_ARRIVES);
-#endif
+#endif /* CONFIG_X86_PTRACE_BTS */
 }
 
 /*
@@ -545,7 +570,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	unsigned fsindex, gsindex;
 
 	/* we're going to use this soon, after a few expensive things */
-	if (next_p->fpu_counter>5)
+	if (next_p->fpu_counter > 5)
 		prefetch(next->xstate);
 
 	/*
@@ -553,13 +578,13 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	load_sp0(tss, next);
 
-	/* 
+	/*
 	 * Switch DS and ES.
 	 * This won't pick up thread selector changes, but I guess that is ok.
 	 */
 	savesegment(es, prev->es);
 	if (unlikely(next->es | prev->es))
-		loadsegment(es, next->es); 
+		loadsegment(es, next->es);
 
 	savesegment(ds, prev->ds);
 	if (unlikely(next->ds | prev->ds))
@@ -585,7 +610,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	arch_leave_lazy_cpu_mode();
 
-	/* 
+	/*
 	 * Switch FS and GS.
 	 *
 	 * Segment register != 0 always requires a reload.  Also
@@ -594,13 +619,13 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	if (unlikely(fsindex | next->fsindex | prev->fs)) {
 		loadsegment(fs, next->fsindex);
-		/* 
+		/*
 		 * Check if the user used a selector != 0; if yes
 		 *  clear 64bit base, since overloaded base is always
 		 *  mapped to the Null selector
 		 */
 		if (fsindex)
-			prev->fs = 0;				
+			prev->fs = 0;
 	}
 	/* when next process has a 64bit base use it */
 	if (next->fs)
@@ -610,7 +635,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	if (unlikely(gsindex | next->gsindex | prev->gs)) {
 		load_gs_index(next->gsindex);
 		if (gsindex)
-			prev->gs = 0;				
+			prev->gs = 0;
 	}
 	if (next->gs)
 		wrmsrl(MSR_KERNEL_GS_BASE, next->gs);
@@ -619,12 +644,12 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	/* Must be after DS reload */
 	unlazy_fpu(prev_p);
 
-	/* 
+	/*
 	 * Switch the PDA and FPU contexts.
 	 */
 	prev->usersp = read_pda(oldrsp);
 	write_pda(oldrsp, next->usersp);
-	write_pda(pcurrent, next_p); 
+	write_pda(pcurrent, next_p);
 
 	write_pda(kernelstack,
 		  (unsigned long)task_stack_page(next_p) +
@@ -665,7 +690,7 @@ long sys_execve(char __user *name, char __user * __user *argv,
 		char __user * __user *envp, struct pt_regs *regs)
 {
 	long error;
-	char * filename;
+	char *filename;
 
 	filename = getname(name);
 	error = PTR_ERR(filename);
@@ -723,55 +748,55 @@ asmlinkage long sys_vfork(struct pt_regs *regs)
 unsigned long get_wchan(struct task_struct *p)
 {
 	unsigned long stack;
-	u64 fp,ip;
+	u64 fp, ip;
 	int count = 0;
 
-	if (!p || p == current || p->state==TASK_RUNNING)
-		return 0; 
+	if (!p || p == current || p->state == TASK_RUNNING)
+		return 0;
 	stack = (unsigned long)task_stack_page(p);
 	if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE)
 		return 0;
 	fp = *(u64 *)(p->thread.sp);
-	do { 
+	do {
 		if (fp < (unsigned long)stack ||
 		    fp > (unsigned long)stack+THREAD_SIZE)
-			return 0; 
+			return 0;
 		ip = *(u64 *)(fp+8);
 		if (!in_sched_functions(ip))
 			return ip;
-		fp = *(u64 *)fp; 
-	} while (count++ < 16); 
+		fp = *(u64 *)fp;
+	} while (count++ < 16);
 	return 0;
 }
 
 long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
-{ 
-	int ret = 0; 
+{
+	int ret = 0;
 	int doit = task == current;
 	int cpu;
 
-	switch (code) { 
+	switch (code) {
 	case ARCH_SET_GS:
 		if (addr >= TASK_SIZE_OF(task))
-			return -EPERM; 
+			return -EPERM;
 		cpu = get_cpu();
-		/* handle small bases via the GDT because that's faster to 
+		/* handle small bases via the GDT because that's faster to
 		   switch. */
-		if (addr <= 0xffffffff) {  
-			set_32bit_tls(task, GS_TLS, addr); 
-			if (doit) { 
+		if (addr <= 0xffffffff) {
+			set_32bit_tls(task, GS_TLS, addr);
+			if (doit) {
 				load_TLS(&task->thread, cpu);
-				load_gs_index(GS_TLS_SEL); 
+				load_gs_index(GS_TLS_SEL);
 			}
-			task->thread.gsindex = GS_TLS_SEL; 
+			task->thread.gsindex = GS_TLS_SEL;
 			task->thread.gs = 0;
-		} else { 
+		} else {
 			task->thread.gsindex = 0;
 			task->thread.gs = addr;
 			if (doit) {
 				load_gs_index(0);
 				ret = checking_wrmsrl(MSR_KERNEL_GS_BASE, addr);
-			} 
+			}
 		}
 		put_cpu();
 		break;
@@ -825,8 +850,7 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
 				rdmsrl(MSR_KERNEL_GS_BASE, base);
 			else
 				base = task->thread.gs;
-		}
-		else
+		} else
 			base = task->thread.gs;
 		ret = put_user(base, (unsigned long __user *)addr);
 		break;

arch/x86/kernel/ptrace.c

@@ -14,6 +14,7 @@
 #include <linux/errno.h>
 #include <linux/ptrace.h>
 #include <linux/regset.h>
+#include <linux/tracehook.h>
 #include <linux/user.h>
 #include <linux/elf.h>
 #include <linux/security.h>
@@ -69,7 +70,7 @@ static inline bool invalid_selector(u16 value)
 
 #define FLAG_MASK		FLAG_MASK_32
 
-static long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
+static unsigned long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
 {
 	BUILD_BUG_ON(offsetof(struct pt_regs, bx) != 0);
 	regno >>= 2;
@@ -554,45 +555,115 @@ static int ptrace_set_debugreg(struct task_struct *child,
 	return 0;
 }
 
-#ifdef X86_BTS
+#ifdef CONFIG_X86_PTRACE_BTS
+/*
+ * The configuration for a particular BTS hardware implementation.
+ */
+struct bts_configuration {
+	/* the size of a BTS record in bytes; at most BTS_MAX_RECORD_SIZE */
+	unsigned char  sizeof_bts;
+	/* the size of a field in the BTS record in bytes */
+	unsigned char  sizeof_field;
+	/* a bitmask to enable/disable BTS in DEBUGCTL MSR */
+	unsigned long debugctl_mask;
+};
+static struct bts_configuration bts_cfg;
+
+#define BTS_MAX_RECORD_SIZE (8 * 3)
+
+
+/*
+ * Branch Trace Store (BTS) uses the following format. Different
+ * architectures vary in the size of those fields.
+ * - source linear address
+ * - destination linear address
+ * - flags
+ *
+ * Later architectures use 64bit pointers throughout, whereas earlier
+ * architectures use 32bit pointers in 32bit mode.
+ *
+ * We compute the base address for the first 8 fields based on:
+ * - the field size stored in the DS configuration
+ * - the relative field position
+ *
+ * In order to store additional information in the BTS buffer, we use
+ * a special source address to indicate that the record requires
+ * special interpretation.
+ *
+ * Netburst indicated via a bit in the flags field whether the branch
+ * was predicted; this is ignored.
+ */
+
+enum bts_field {
+	bts_from = 0,
+	bts_to,
+	bts_flags,
+
+	bts_escape = (unsigned long)-1,
+	bts_qual = bts_to,
+	bts_jiffies = bts_flags
+};
+
+static inline unsigned long bts_get(const char *base, enum bts_field field)
+{
+	base += (bts_cfg.sizeof_field * field);
+	return *(unsigned long *)base;
+}
 
-static int ptrace_bts_get_size(struct task_struct *child)
+static inline void bts_set(char *base, enum bts_field field, unsigned long val)
 {
-	if (!child->thread.ds_area_msr)
-		return -ENXIO;
+	base += (bts_cfg.sizeof_field * field);;
+	(*(unsigned long *)base) = val;
+}
 
-	return ds_get_bts_index((void *)child->thread.ds_area_msr);
+/*
+ * Translate a BTS record from the raw format into the bts_struct format
+ *
+ * out (out): bts_struct interpretation
+ * raw: raw BTS record
+ */
+static void ptrace_bts_translate_record(struct bts_struct *out, const void *raw)
+{
+	memset(out, 0, sizeof(*out));
+	if (bts_get(raw, bts_from) == bts_escape) {
+		out->qualifier       = bts_get(raw, bts_qual);
+		out->variant.jiffies = bts_get(raw, bts_jiffies);
+	} else {
+		out->qualifier = BTS_BRANCH;
+		out->variant.lbr.from_ip = bts_get(raw, bts_from);
+		out->variant.lbr.to_ip   = bts_get(raw, bts_to);
+	}
 }
 
-static int ptrace_bts_read_record(struct task_struct *child,
-				  long index,
+static int ptrace_bts_read_record(struct task_struct *child, size_t index,
 				  struct bts_struct __user *out)
 {
 	struct bts_struct ret;
-	int retval;
-	int bts_end;
-	int bts_index;
-
-	if (!child->thread.ds_area_msr)
-		return -ENXIO;
+	const void *bts_record;
+	size_t bts_index, bts_end;
+	int error;
 
-	if (index < 0)
-		return -EINVAL;
+	error = ds_get_bts_end(child, &bts_end);
+	if (error < 0)
+		return error;
 
-	bts_end = ds_get_bts_end((void *)child->thread.ds_area_msr);
 	if (bts_end <= index)
 		return -EINVAL;
 
+	error = ds_get_bts_index(child, &bts_index);
+	if (error < 0)
+		return error;
+
 	/* translate the ptrace bts index into the ds bts index */
-	bts_index = ds_get_bts_index((void *)child->thread.ds_area_msr);
-	bts_index -= (index + 1);
-	if (bts_index < 0)
-		bts_index += bts_end;
+	bts_index += bts_end - (index + 1);
+	if (bts_end <= bts_index)
+		bts_index -= bts_end;
 
-	retval = ds_read_bts((void *)child->thread.ds_area_msr,
-			     bts_index, &ret);
-	if (retval < 0)
-		return retval;
+	error = ds_access_bts(child, bts_index, &bts_record);
+	if (error < 0)
+		return error;
+
+	ptrace_bts_translate_record(&ret, bts_record);
 
 	if (copy_to_user(out, &ret, sizeof(ret)))
 		return -EFAULT;
@@ -600,101 +671,106 @@ static int ptrace_bts_read_record(struct task_struct *child,
 	return sizeof(ret);
 }
 
-static int ptrace_bts_clear(struct task_struct *child)
-{
-	if (!child->thread.ds_area_msr)
-		return -ENXIO;
-
-	return ds_clear((void *)child->thread.ds_area_msr);
-}
-
 static int ptrace_bts_drain(struct task_struct *child,
 			    long size,
 			    struct bts_struct __user *out)
 {
-	int end, i;
-	void *ds = (void *)child->thread.ds_area_msr;
-
-	if (!ds)
-		return -ENXIO;
+	struct bts_struct ret;
+	const unsigned char *raw;
+	size_t end, i;
+	int error;
 
-	end = ds_get_bts_index(ds);
-	if (end <= 0)
-		return end;
+	error = ds_get_bts_index(child, &end);
+	if (error < 0)
+		return error;
 
 	if (size < (end * sizeof(struct bts_struct)))
 		return -EIO;
 
-	for (i = 0; i < end; i++, out++) {
-		struct bts_struct ret;
-		int retval;
+	error = ds_access_bts(child, 0, (const void **)&raw);
+	if (error < 0)
+		return error;
 
-		retval = ds_read_bts(ds, i, &ret);
-		if (retval < 0)
-			return retval;
+	for (i = 0; i < end; i++, out++, raw += bts_cfg.sizeof_bts) {
+		ptrace_bts_translate_record(&ret, raw);
 
 		if (copy_to_user(out, &ret, sizeof(ret)))
 			return -EFAULT;
 	}
 
-	ds_clear(ds);
+	error = ds_clear_bts(child);
+	if (error < 0)
+		return error;
 
 	return end;
 }
 
+static void ptrace_bts_ovfl(struct task_struct *child)
+{
+	send_sig(child->thread.bts_ovfl_signal, child, 0);
+}
+
 static int ptrace_bts_config(struct task_struct *child,
 			     long cfg_size,
 			     const struct ptrace_bts_config __user *ucfg)
 {
 	struct ptrace_bts_config cfg;
-	int bts_size, ret = 0;
-	void *ds;
+	int error = 0;
+
+	error = -EOPNOTSUPP;
+	if (!bts_cfg.sizeof_bts)
+		goto errout;
 
+	error = -EIO;
 	if (cfg_size < sizeof(cfg))
-		return -EIO;
+		goto errout;
 
+	error = -EFAULT;
 	if (copy_from_user(&cfg, ucfg, sizeof(cfg)))
-		return -EFAULT;
+		goto errout;
 
-	if ((int)cfg.size < 0)
-		return -EINVAL;
+	error = -EINVAL;
+	if ((cfg.flags & PTRACE_BTS_O_SIGNAL) &&
+	    !(cfg.flags & PTRACE_BTS_O_ALLOC))
+		goto errout;
 
-	bts_size = 0;
-	ds = (void *)child->thread.ds_area_msr;
-	if (ds) {
-		bts_size = ds_get_bts_size(ds);
-		if (bts_size < 0)
-			return bts_size;
-	}
-	cfg.size = PAGE_ALIGN(cfg.size);
+	if (cfg.flags & PTRACE_BTS_O_ALLOC) {
+		ds_ovfl_callback_t ovfl = NULL;
+		unsigned int sig = 0;
+
+		/* we ignore the error in case we were not tracing child */
+		(void)ds_release_bts(child);
 
-	if (bts_size != cfg.size) {
-		ret = ptrace_bts_realloc(child, cfg.size,
-					 cfg.flags & PTRACE_BTS_O_CUT_SIZE);
-		if (ret < 0)
+		if (cfg.flags & PTRACE_BTS_O_SIGNAL) {
+			if (!cfg.signal)
+				goto errout;
+
+			sig  = cfg.signal;
+			ovfl = ptrace_bts_ovfl;
+		}
+
+		error = ds_request_bts(child, /* base = */ NULL, cfg.size, ovfl);
+		if (error < 0)
 			goto errout;
 
-		ds = (void *)child->thread.ds_area_msr;
+		child->thread.bts_ovfl_signal = sig;
 	}
 
-	if (cfg.flags & PTRACE_BTS_O_SIGNAL)
-		ret = ds_set_overflow(ds, DS_O_SIGNAL);
-	else
-		ret = ds_set_overflow(ds, DS_O_WRAP);
-	if (ret < 0)
+	error = -EINVAL;
+	if (!child->thread.ds_ctx && cfg.flags)
 		goto errout;
 
 	if (cfg.flags & PTRACE_BTS_O_TRACE)
-		child->thread.debugctlmsr |= ds_debugctl_mask();
+		child->thread.debugctlmsr |= bts_cfg.debugctl_mask;
 	else
-		child->thread.debugctlmsr &= ~ds_debugctl_mask();
+		child->thread.debugctlmsr &= ~bts_cfg.debugctl_mask;
 
 	if (cfg.flags & PTRACE_BTS_O_SCHED)
 		set_tsk_thread_flag(child, TIF_BTS_TRACE_TS);
 	else
 		clear_tsk_thread_flag(child, TIF_BTS_TRACE_TS);
 
-	ret = sizeof(cfg);
+	error = sizeof(cfg);
 
 out:
 	if (child->thread.debugctlmsr)
@@ -702,10 +778,10 @@ out:
 	else
 		clear_tsk_thread_flag(child, TIF_DEBUGCTLMSR);
 
-	return ret;
+	return error;
 
 errout:
-	child->thread.debugctlmsr &= ~ds_debugctl_mask();
+	child->thread.debugctlmsr &= ~bts_cfg.debugctl_mask;
 	clear_tsk_thread_flag(child, TIF_BTS_TRACE_TS);
 	goto out;
 }
@@ -714,29 +790,40 @@ static int ptrace_bts_status(struct task_struct *child,
 			     long cfg_size,
 			     struct ptrace_bts_config __user *ucfg)
 {
-	void *ds = (void *)child->thread.ds_area_msr;
 	struct ptrace_bts_config cfg;
+	size_t end;
+	const void *base, *max;
+	int error;
 
 	if (cfg_size < sizeof(cfg))
 		return -EIO;
 
-	memset(&cfg, 0, sizeof(cfg));
+	error = ds_get_bts_end(child, &end);
+	if (error < 0)
+		return error;
 
-	if (ds) {
-		cfg.size = ds_get_bts_size(ds);
+	error = ds_access_bts(child, /* index = */ 0, &base);
+	if (error < 0)
+		return error;
 
-		if (ds_get_overflow(ds) == DS_O_SIGNAL)
-			cfg.flags |= PTRACE_BTS_O_SIGNAL;
+	error = ds_access_bts(child, /* index = */ end, &max);
+	if (error < 0)
+		return error;
 
-		if (test_tsk_thread_flag(child, TIF_DEBUGCTLMSR) &&
-		    child->thread.debugctlmsr & ds_debugctl_mask())
-			cfg.flags |= PTRACE_BTS_O_TRACE;
+	memset(&cfg, 0, sizeof(cfg));
+	cfg.size = (max - base);
+	cfg.signal = child->thread.bts_ovfl_signal;
+	cfg.bts_size = sizeof(struct bts_struct);
 
-		if (test_tsk_thread_flag(child, TIF_BTS_TRACE_TS))
-			cfg.flags |= PTRACE_BTS_O_SCHED;
-	}
+	if (cfg.signal)
+		cfg.flags |= PTRACE_BTS_O_SIGNAL;
 
-	cfg.bts_size = sizeof(struct bts_struct);
+	if (test_tsk_thread_flag(child, TIF_DEBUGCTLMSR) &&
+	    child->thread.debugctlmsr & bts_cfg.debugctl_mask)
+		cfg.flags |= PTRACE_BTS_O_TRACE;
+
+	if (test_tsk_thread_flag(child, TIF_BTS_TRACE_TS))
+		cfg.flags |= PTRACE_BTS_O_SCHED;
 
 	if (copy_to_user(ucfg, &cfg, sizeof(cfg)))
 		return -EFAULT;
@@ -744,89 +831,38 @@ static int ptrace_bts_status(struct task_struct *child,
 	return sizeof(cfg);
 }
 
-
 static int ptrace_bts_write_record(struct task_struct *child,
 				   const struct bts_struct *in)
 {
-	int retval;
+	unsigned char bts_record[BTS_MAX_RECORD_SIZE];
 
-	if (!child->thread.ds_area_msr)
-		return -ENXIO;
+	BUG_ON(BTS_MAX_RECORD_SIZE < bts_cfg.sizeof_bts);
 
-	retval = ds_write_bts((void *)child->thread.ds_area_msr, in);
-	if (retval)
-		return retval;
+	memset(bts_record, 0, bts_cfg.sizeof_bts);
+	switch (in->qualifier) {
+	case BTS_INVALID:
+		break;
 
-	return sizeof(*in);
-}
+	case BTS_BRANCH:
+		bts_set(bts_record, bts_from, in->variant.lbr.from_ip);
+		bts_set(bts_record, bts_to,   in->variant.lbr.to_ip);
+		break;
 
-static int ptrace_bts_realloc(struct task_struct *child,
-			      int size, int reduce_size)
-{
-	unsigned long rlim, vm;
-	int ret, old_size;
+	case BTS_TASK_ARRIVES:
+	case BTS_TASK_DEPARTS:
+		bts_set(bts_record, bts_from,    bts_escape);
+		bts_set(bts_record, bts_qual,    in->qualifier);
+		bts_set(bts_record, bts_jiffies, in->variant.jiffies);
+		break;
 
-	if (size < 0)
+	default:
 		return -EINVAL;
-
-	old_size = ds_get_bts_size((void *)child->thread.ds_area_msr);
-	if (old_size < 0)
-		return old_size;
-
-	ret = ds_free((void **)&child->thread.ds_area_msr);
-	if (ret < 0)
-		goto out;
-
-	size >>= PAGE_SHIFT;
-	old_size >>= PAGE_SHIFT;
-
-	current->mm->total_vm  -= old_size;
-	current->mm->locked_vm -= old_size;
-
-	if (size == 0)
-		goto out;
-
-	rlim = current->signal->rlim[RLIMIT_AS].rlim_cur >> PAGE_SHIFT;
-	vm = current->mm->total_vm  + size;
-	if (rlim < vm) {
-		ret = -ENOMEM;
-
-		if (!reduce_size)
-			goto out;
-
-		size = rlim - current->mm->total_vm;
-		if (size <= 0)
-			goto out;
-	}
-
-	rlim = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >> PAGE_SHIFT;
-	vm = current->mm->locked_vm  + size;
-	if (rlim < vm) {
-		ret = -ENOMEM;
-
-		if (!reduce_size)
-			goto out;
-
-		size = rlim - current->mm->locked_vm;
-		if (size <= 0)
-			goto out;
 	}
 
-	ret = ds_allocate((void **)&child->thread.ds_area_msr,
-			  size << PAGE_SHIFT);
-	if (ret < 0)
-		goto out;
-
-	current->mm->total_vm  += size;
-	current->mm->locked_vm += size;
-
-out:
-	if (child->thread.ds_area_msr)
-		set_tsk_thread_flag(child, TIF_DS_AREA_MSR);
-	else
-		clear_tsk_thread_flag(child, TIF_DS_AREA_MSR);
-
-	return ret;
+	/* The writing task will be the switched-to task on a context
+	 * switch. It needs to write into the switched-from task's BTS
+	 * buffer. */
+	return ds_unchecked_write_bts(child, bts_record, bts_cfg.sizeof_bts);
 }
 
 void ptrace_bts_take_timestamp(struct task_struct *tsk,
@@ -839,7 +875,66 @@ void ptrace_bts_take_timestamp(struct task_struct *tsk,
 
 	ptrace_bts_write_record(tsk, &rec);
 }
-#endif /* X86_BTS */
+
+static const struct bts_configuration bts_cfg_netburst = {
+	.sizeof_bts    = sizeof(long) * 3,
+	.sizeof_field  = sizeof(long),
+	.debugctl_mask = (1<<2)|(1<<3)|(1<<5)
+};
+
+static const struct bts_configuration bts_cfg_pentium_m = {
+	.sizeof_bts    = sizeof(long) * 3,
+	.sizeof_field  = sizeof(long),
+	.debugctl_mask = (1<<6)|(1<<7)
+};
+
+static const struct bts_configuration bts_cfg_core2 = {
+	.sizeof_bts    = 8 * 3,
+	.sizeof_field  = 8,
+	.debugctl_mask = (1<<6)|(1<<7)|(1<<9)
+};
+
+static inline void bts_configure(const struct bts_configuration *cfg)
+{
+	bts_cfg = *cfg;
+}
+
+void __cpuinit ptrace_bts_init_intel(struct cpuinfo_x86 *c)
+{
+	switch (c->x86) {
+	case 0x6:
+		switch (c->x86_model) {
+		case 0xD:
+		case 0xE: /* Pentium M */
+			bts_configure(&bts_cfg_pentium_m);
+			break;
+		case 0xF: /* Core2 */
+        case 0x1C: /* Atom */
+			bts_configure(&bts_cfg_core2);
+			break;
+		default:
+			/* sorry, don't know about them */
+			break;
+		}
+		break;
+	case 0xF:
+		switch (c->x86_model) {
+		case 0x0:
+		case 0x1:
+		case 0x2: /* Netburst */
+			bts_configure(&bts_cfg_netburst);
+			break;
+		default:
+			/* sorry, don't know about them */
+			break;
+		}
+		break;
+	default:
+		/* sorry, don't know about them */
+		break;
+	}
+}
+#endif /* CONFIG_X86_PTRACE_BTS */
 
 /*
  * Called by kernel/ptrace.c when detaching..
@@ -852,15 +947,15 @@ void ptrace_disable(struct task_struct *child)
 #ifdef TIF_SYSCALL_EMU
 	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
 #endif
-	if (child->thread.ds_area_msr) {
-#ifdef X86_BTS
-		ptrace_bts_realloc(child, 0, 0);
-#endif
-		child->thread.debugctlmsr &= ~ds_debugctl_mask();
-		if (!child->thread.debugctlmsr)
-			clear_tsk_thread_flag(child, TIF_DEBUGCTLMSR);
-		clear_tsk_thread_flag(child, TIF_BTS_TRACE_TS);
-	}
+#ifdef CONFIG_X86_PTRACE_BTS
+	(void)ds_release_bts(child);
+
+	child->thread.debugctlmsr &= ~bts_cfg.debugctl_mask;
+	if (!child->thread.debugctlmsr)
+		clear_tsk_thread_flag(child, TIF_DEBUGCTLMSR);
+
+	clear_tsk_thread_flag(child, TIF_BTS_TRACE_TS);
+#endif /* CONFIG_X86_PTRACE_BTS */
 }
 
 #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
@@ -980,7 +1075,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 	/*
 	 * These bits need more cooking - not enabled yet:
 	 */
-#ifdef X86_BTS
+#ifdef CONFIG_X86_PTRACE_BTS
 	case PTRACE_BTS_CONFIG:
 		ret = ptrace_bts_config
 			(child, data, (struct ptrace_bts_config __user *)addr);
@@ -992,7 +1087,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 
 	case PTRACE_BTS_SIZE:
-		ret = ptrace_bts_get_size(child);
+		ret = ds_get_bts_index(child, /* pos = */ NULL);
 		break;
 
 	case PTRACE_BTS_GET:
@@ -1001,14 +1096,14 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 
 	case PTRACE_BTS_CLEAR:
-		ret = ptrace_bts_clear(child);
+		ret = ds_clear_bts(child);
 		break;
 
 	case PTRACE_BTS_DRAIN:
 		ret = ptrace_bts_drain
 			(child, data, (struct bts_struct __user *) addr);
 		break;
-#endif
+#endif /* CONFIG_X86_PTRACE_BTS */
 
 	default:
 		ret = ptrace_request(child, request, addr, data);
@@ -1375,30 +1470,6 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
 	force_sig_info(SIGTRAP, &info, tsk);
 }
 
-static void syscall_trace(struct pt_regs *regs)
-{
-	if (!(current->ptrace & PT_PTRACED))
-		return;
-
-#if 0
-	printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n",
-	       current->comm,
-	       regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0),
-	       current_thread_info()->flags, current->ptrace);
-#endif
-
-	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
-				? 0x80 : 0));
-	/*
-	 * this isn't the same as continuing with a signal, but it will do
-	 * for normal use.  strace only continues with a signal if the
-	 * stopping signal is not SIGTRAP.  -brl
-	 */
-	if (current->exit_code) {
-		send_sig(current->exit_code, current, 1);
-		current->exit_code = 0;
-	}
-}
 
 #ifdef CONFIG_X86_32
 # define IS_IA32	1
@@ -1432,8 +1503,9 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs)
 	if (unlikely(test_thread_flag(TIF_SYSCALL_EMU)))
 		ret = -1L;
 
-	if (ret || test_thread_flag(TIF_SYSCALL_TRACE))
-		syscall_trace(regs);
+	if ((ret || test_thread_flag(TIF_SYSCALL_TRACE)) &&
+	    tracehook_report_syscall_entry(regs))
+		ret = -1L;
 
 	if (unlikely(current->audit_context)) {
 		if (IS_IA32)
@@ -1459,7 +1531,7 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
 		audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
 
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
-		syscall_trace(regs);
+		tracehook_report_syscall_exit(regs, 0);
 
 	/*
 	 * If TIF_SYSCALL_EMU is set, we only get here because of
@@ -1475,6 +1547,6 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
 	 * system call instruction.
 	 */
 	if (test_thread_flag(TIF_SINGLESTEP) &&
-	    (current->ptrace & PT_PTRACED))
+	    tracehook_consider_fatal_signal(current, SIGTRAP, SIG_DFL))
 		send_sigtrap(current, regs, 0);
 }

arch/x86/kernel/reboot.c

@@ -29,7 +29,11 @@ EXPORT_SYMBOL(pm_power_off);
 
 static const struct desc_ptr no_idt = {};
 static int reboot_mode;
-enum reboot_type reboot_type = BOOT_KBD;
+/*
+ * Keyboard reset and triple fault may result in INIT, not RESET, which
+ * doesn't work when we're in vmx root mode.  Try ACPI first.
+ */
+enum reboot_type reboot_type = BOOT_ACPI;
 int reboot_force;
 
 #if defined(CONFIG_X86_32) && defined(CONFIG_SMP)

arch/x86/kernel/setup.c

@@ -223,6 +223,9 @@ unsigned long saved_video_mode;
 #define RAMDISK_LOAD_FLAG		0x4000
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
+#ifdef CONFIG_CMDLINE_BOOL
+static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
+#endif
 
 #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
 struct edd edd;
@@ -665,6 +668,19 @@ void __init setup_arch(char **cmdline_p)
 	bss_resource.start = virt_to_phys(&__bss_start);
 	bss_resource.end = virt_to_phys(&__bss_stop)-1;
 
+#ifdef CONFIG_CMDLINE_BOOL
+#ifdef CONFIG_CMDLINE_OVERRIDE
+	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+#else
+	if (builtin_cmdline[0]) {
+		/* append boot loader cmdline to builtin */
+		strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
+		strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+		strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+	}
+#endif
+#endif
+
 	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 

arch/x86/kernel/setup_percpu.c

@@ -162,9 +162,16 @@ void __init setup_per_cpu_areas(void)
 			printk(KERN_INFO
 			       "cpu %d has no node %d or node-local memory\n",
 				cpu, node);
+			if (ptr)
+				printk(KERN_DEBUG "per cpu data for cpu%d at %016lx\n",
+					 cpu, __pa(ptr));
 		}
-		else
+		else {
 			ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
+			if (ptr)
+				printk(KERN_DEBUG "per cpu data for cpu%d on node%d at %016lx\n",
+					 cpu, node, __pa(ptr));
+		}
 #endif
 		per_cpu_offset(cpu) = ptr - __per_cpu_start;
 		memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);

arch/x86/kernel/sigframe.h

@@ -24,4 +24,9 @@ struct rt_sigframe {
 	struct ucontext uc;
 	struct siginfo info;
 };
+
+int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+		sigset_t *set, struct pt_regs *regs);
+int ia32_setup_frame(int sig, struct k_sigaction *ka,
+		sigset_t *set, struct pt_regs *regs);
 #endif

arch/x86/kernel/signal_32.c

@@ -17,6 +17,7 @@
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/wait.h>
+#include <linux/tracehook.h>
 #include <linux/elf.h>
 #include <linux/smp.h>
 #include <linux/mm.h>
@@ -26,6 +27,7 @@
 #include <asm/uaccess.h>
 #include <asm/i387.h>
 #include <asm/vdso.h>
+#include <asm/syscalls.h>
 
 #include "sigframe.h"
 
@@ -558,8 +560,6 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	 * handler too.
 	 */
 	regs->flags &= ~X86_EFLAGS_TF;
-	if (test_thread_flag(TIF_SINGLESTEP))
-		ptrace_notify(SIGTRAP);
 
 	spin_lock_irq(&current->sighand->siglock);
 	sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
@@ -568,6 +568,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
+	tracehook_signal_handler(sig, info, ka, regs,
+				 test_thread_flag(TIF_SINGLESTEP));
+
 	return 0;
 }
 
@@ -661,5 +664,10 @@ do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
 	if (thread_info_flags & _TIF_SIGPENDING)
 		do_signal(regs);
 
+	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+		clear_thread_flag(TIF_NOTIFY_RESUME);
+		tracehook_notify_resume(regs);
+	}
+
 	clear_thread_flag(TIF_IRET);
 }

arch/x86/kernel/signal_64.c

@@ -15,17 +15,21 @@
 #include <linux/errno.h>
 #include <linux/wait.h>
 #include <linux/ptrace.h>
+#include <linux/tracehook.h>
 #include <linux/unistd.h>
 #include <linux/stddef.h>
 #include <linux/personality.h>
 #include <linux/compiler.h>
+#include <linux/uaccess.h>
+
 #include <asm/processor.h>
 #include <asm/ucontext.h>
-#include <asm/uaccess.h>
 #include <asm/i387.h>
 #include <asm/proto.h>
 #include <asm/ia32_unistd.h>
 #include <asm/mce.h>
+#include <asm/syscall.h>
+#include <asm/syscalls.h>
 #include "sigframe.h"
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -41,11 +45,6 @@
 # define FIX_EFLAGS	__FIX_EFLAGS
 #endif
 
-int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-               sigset_t *set, struct pt_regs * regs); 
-int ia32_setup_frame(int sig, struct k_sigaction *ka,
-            sigset_t *set, struct pt_regs * regs); 
-
 asmlinkage long
 sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
 		struct pt_regs *regs)
@@ -128,7 +127,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
 	/* Always make any pending restarted system calls return -EINTR */
 	current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
-#define COPY(x)		err |= __get_user(regs->x, &sc->x)
+#define COPY(x)		(err |= __get_user(regs->x, &sc->x))
 
 	COPY(di); COPY(si); COPY(bp); COPY(sp); COPY(bx);
 	COPY(dx); COPY(cx); COPY(ip);
@@ -158,7 +157,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
 	}
 
 	{
-		struct _fpstate __user * buf;
+		struct _fpstate __user *buf;
 		err |= __get_user(buf, &sc->fpstate);
 
 		if (buf) {
@@ -198,7 +197,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
 	current->blocked = set;
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
-	
+
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
 		goto badframe;
 
@@ -208,16 +207,17 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
 	return ax;
 
 badframe:
-	signal_fault(regs,frame,"sigreturn");
+	signal_fault(regs, frame, "sigreturn");
 	return 0;
-}	
+}
 
 /*
  * Set up a signal frame.
  */
 
 static inline int
-setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, unsigned long mask, struct task_struct *me)
+setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
+		unsigned long mask, struct task_struct *me)
 {
 	int err = 0;
 
@@ -273,35 +273,35 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
 }
 
 static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-			   sigset_t *set, struct pt_regs * regs)
+			   sigset_t *set, struct pt_regs *regs)
 {
 	struct rt_sigframe __user *frame;
-	struct _fpstate __user *fp = NULL; 
+	struct _fpstate __user *fp = NULL;
 	int err = 0;
 	struct task_struct *me = current;
 
 	if (used_math()) {
-		fp = get_stack(ka, regs, sizeof(struct _fpstate)); 
+		fp = get_stack(ka, regs, sizeof(struct _fpstate));
 		frame = (void __user *)round_down(
 			(unsigned long)fp - sizeof(struct rt_sigframe), 16) - 8;
 
 		if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
 			goto give_sigsegv;
 
-		if (save_i387(fp) < 0) 
-			err |= -1; 
+		if (save_i387(fp) < 0)
+			err |= -1;
 	} else
 		frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
 
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
 		goto give_sigsegv;
 
-	if (ka->sa.sa_flags & SA_SIGINFO) { 
+	if (ka->sa.sa_flags & SA_SIGINFO) {
 		err |= copy_siginfo_to_user(&frame->info, info);
 		if (err)
 			goto give_sigsegv;
 	}
-		
+
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(0, &frame->uc.uc_link);
@@ -311,9 +311,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __put_user(me->sas_ss_size, &frame->uc.uc_stack.ss_size);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0], me);
 	err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
-	if (sizeof(*set) == 16) { 
+	if (sizeof(*set) == 16) {
 		__put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
-		__put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]); 
+		__put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
 	} else
 		err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
@@ -324,7 +324,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 		err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
 	} else {
 		/* could use a vstub here */
-		goto give_sigsegv; 
+		goto give_sigsegv;
 	}
 
 	if (err)
@@ -332,7 +332,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 
 	/* Set up registers for signal handler */
 	regs->di = sig;
-	/* In case the signal handler was declared without prototypes */ 
+	/* In case the signal handler was declared without prototypes */
 	regs->ax = 0;
 
 	/* This also works for non SA_SIGINFO handlers because they expect the
@@ -354,38 +354,9 @@ give_sigsegv:
 	return -EFAULT;
 }
 
-/*
- * Return -1L or the syscall number that @regs is executing.
- */
-static long current_syscall(struct pt_regs *regs)
-{
-	/*
-	 * We always sign-extend a -1 value being set here,
-	 * so this is always either -1L or a syscall number.
-	 */
-	return regs->orig_ax;
-}
-
-/*
- * Return a value that is -EFOO if the system call in @regs->orig_ax
- * returned an error.  This only works for @regs from @current.
- */
-static long current_syscall_ret(struct pt_regs *regs)
-{
-#ifdef CONFIG_IA32_EMULATION
-	if (test_thread_flag(TIF_IA32))
-		/*
-		 * Sign-extend the value so (int)-EFOO becomes (long)-EFOO
-		 * and will match correctly in comparisons.
-		 */
-		return (int) regs->ax;
-#endif
-	return regs->ax;
-}
-
 /*
  * OK, we're invoking a handler
- */	
+ */
 
 static int
 handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
@@ -394,9 +365,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	int ret;
 
 	/* Are we from a system call? */
-	if (current_syscall(regs) >= 0) {
+	if (syscall_get_nr(current, regs) >= 0) {
 		/* If so, check system call restarting.. */
-		switch (current_syscall_ret(regs)) {
+		switch (syscall_get_error(current, regs)) {
 		case -ERESTART_RESTARTBLOCK:
 		case -ERESTARTNOHAND:
 			regs->ax = -EINTR;
@@ -429,7 +400,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 			ret = ia32_setup_rt_frame(sig, ka, info, oldset, regs);
 		else
 			ret = ia32_setup_frame(sig, ka, oldset, regs);
-	} else 
+	} else
 #endif
 	ret = setup_rt_frame(sig, ka, info, oldset, regs);
 
@@ -453,15 +424,16 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 		 * handler too.
 		 */
 		regs->flags &= ~X86_EFLAGS_TF;
-		if (test_thread_flag(TIF_SINGLESTEP))
-			ptrace_notify(SIGTRAP);
 
 		spin_lock_irq(&current->sighand->siglock);
-		sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+		sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
 		if (!(ka->sa.sa_flags & SA_NODEFER))
-			sigaddset(&current->blocked,sig);
+			sigaddset(&current->blocked, sig);
 		recalc_sigpending();
 		spin_unlock_irq(&current->sighand->siglock);
+
+		tracehook_signal_handler(sig, info, ka, regs,
+					 test_thread_flag(TIF_SINGLESTEP));
 	}
 
 	return ret;
@@ -518,9 +490,9 @@ static void do_signal(struct pt_regs *regs)
 	}
 
 	/* Did we come from a system call? */
-	if (current_syscall(regs) >= 0) {
+	if (syscall_get_nr(current, regs) >= 0) {
 		/* Restart the system call - no handlers present */
-		switch (current_syscall_ret(regs)) {
+		switch (syscall_get_error(current, regs)) {
 		case -ERESTARTNOHAND:
 		case -ERESTARTSYS:
 		case -ERESTARTNOINTR:
@@ -558,17 +530,23 @@ void do_notify_resume(struct pt_regs *regs, void *unused,
 	/* deal with pending signal delivery */
 	if (thread_info_flags & _TIF_SIGPENDING)
 		do_signal(regs);
+
+	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+		clear_thread_flag(TIF_NOTIFY_RESUME);
+		tracehook_notify_resume(regs);
+	}
 }
 
 void signal_fault(struct pt_regs *regs, void __user *frame, char *where)
-{ 
-	struct task_struct *me = current; 
+{
+	struct task_struct *me = current;
 	if (show_unhandled_signals && printk_ratelimit()) {
 		printk("%s[%d] bad frame in %s frame:%p ip:%lx sp:%lx orax:%lx",
-	       me->comm,me->pid,where,frame,regs->ip,regs->sp,regs->orig_ax);
+	       me->comm, me->pid, where, frame, regs->ip,
+		   regs->sp, regs->orig_ax);
 		print_vma_addr(" in ", regs->ip);
 		printk("\n");
 	}
 
-	force_sig(SIGSEGV, me); 
-} 
+	force_sig(SIGSEGV, me);
+}

arch/x86/kernel/smpboot.c

@@ -88,7 +88,7 @@ static DEFINE_PER_CPU(struct task_struct *, idle_thread_array);
 #define get_idle_for_cpu(x)      (per_cpu(idle_thread_array, x))
 #define set_idle_for_cpu(x, p)   (per_cpu(idle_thread_array, x) = (p))
 #else
-struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ;
+static struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ;
 #define get_idle_for_cpu(x)      (idle_thread_array[(x)])
 #define set_idle_for_cpu(x, p)   (idle_thread_array[(x)] = (p))
 #endif
@@ -129,7 +129,7 @@ static int boot_cpu_logical_apicid;
 static cpumask_t cpu_sibling_setup_map;
 
 /* Set if we find a B stepping CPU */
-int __cpuinitdata smp_b_stepping;
+static int __cpuinitdata smp_b_stepping;
 
 #if defined(CONFIG_NUMA) && defined(CONFIG_X86_32)
 
@@ -1313,16 +1313,13 @@ __init void prefill_possible_map(void)
 	if (!num_processors)
 		num_processors = 1;
 
-#ifdef CONFIG_HOTPLUG_CPU
 	if (additional_cpus == -1) {
 		if (disabled_cpus > 0)
 			additional_cpus = disabled_cpus;
 		else
 			additional_cpus = 0;
 	}
-#else
-	additional_cpus = 0;
-#endif
+
 	possible = num_processors + additional_cpus;
 	if (possible > NR_CPUS)
 		possible = NR_CPUS;

arch/x86/kernel/sys_i386_32.c

@@ -22,6 +22,8 @@
 #include <linux/uaccess.h>
 #include <linux/unistd.h>
 
+#include <asm/syscalls.h>
+
 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 			  unsigned long prot, unsigned long flags,
 			  unsigned long fd, unsigned long pgoff)

arch/x86/kernel/sys_x86_64.c

@@ -13,15 +13,17 @@
 #include <linux/utsname.h>
 #include <linux/personality.h>
 #include <linux/random.h>
+#include <linux/uaccess.h>
 
-#include <asm/uaccess.h>
 #include <asm/ia32.h>
+#include <asm/syscalls.h>
 
-asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
-	unsigned long fd, unsigned long off)
+asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
+		unsigned long prot, unsigned long flags,
+		unsigned long fd, unsigned long off)
 {
 	long error;
-	struct file * file;
+	struct file *file;
 
 	error = -EINVAL;
 	if (off & ~PAGE_MASK)
@@ -56,9 +58,9 @@ static void find_start_end(unsigned long flags, unsigned long *begin,
 		   unmapped base down for this case. This can give
 		   conflicts with the heap, but we assume that glibc
 		   malloc knows how to fall back to mmap. Give it 1GB
-		   of playground for now. -AK */ 
-		*begin = 0x40000000; 
-		*end = 0x80000000;		
+		   of playground for now. -AK */
+		*begin = 0x40000000;
+		*end = 0x80000000;
 		if (current->flags & PF_RANDOMIZE) {
 			new_begin = randomize_range(*begin, *begin + 0x02000000, 0);
 			if (new_begin)
@@ -66,9 +68,9 @@ static void find_start_end(unsigned long flags, unsigned long *begin,
 		}
 	} else {
 		*begin = TASK_UNMAPPED_BASE;
-		*end = TASK_SIZE; 
+		*end = TASK_SIZE;
 	}
-} 
+}
 
 unsigned long
 arch_get_unmapped_area(struct file *filp, unsigned long addr,
@@ -78,11 +80,11 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	struct vm_area_struct *vma;
 	unsigned long start_addr;
 	unsigned long begin, end;
-	
+
 	if (flags & MAP_FIXED)
 		return addr;
 
-	find_start_end(flags, &begin, &end); 
+	find_start_end(flags, &begin, &end);
 
 	if (len > end)
 		return -ENOMEM;
@@ -96,12 +98,12 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	}
 	if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32))
 	    && len <= mm->cached_hole_size) {
-	        mm->cached_hole_size = 0;
+		mm->cached_hole_size = 0;
 		mm->free_area_cache = begin;
 	}
 	addr = mm->free_area_cache;
-	if (addr < begin) 
-		addr = begin; 
+	if (addr < begin)
+		addr = begin;
 	start_addr = addr;
 
 full_search:
@@ -127,7 +129,7 @@ full_search:
 			return addr;
 		}
 		if (addr + mm->cached_hole_size < vma->vm_start)
-		        mm->cached_hole_size = vma->vm_start - addr;
+			mm->cached_hole_size = vma->vm_start - addr;
 
 		addr = vma->vm_end;
 	}
@@ -177,7 +179,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		vma = find_vma(mm, addr-len);
 		if (!vma || addr <= vma->vm_start)
 			/* remember the address as a hint for next time */
-			return (mm->free_area_cache = addr-len);
+			return mm->free_area_cache = addr-len;
 	}
 
 	if (mm->mmap_base < len)
@@ -194,7 +196,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		vma = find_vma(mm, addr);
 		if (!vma || addr+len <= vma->vm_start)
 			/* remember the address as a hint for next time */
-			return (mm->free_area_cache = addr);
+			return mm->free_area_cache = addr;
 
 		/* remember the largest hole we saw so far */
 		if (addr + mm->cached_hole_size < vma->vm_start)
@@ -224,13 +226,13 @@ bottomup:
 }
 
 
-asmlinkage long sys_uname(struct new_utsname __user * name)
+asmlinkage long sys_uname(struct new_utsname __user *name)
 {
 	int err;
 	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
+	err = copy_to_user(name, utsname(), sizeof(*name));
 	up_read(&uts_sem);
-	if (personality(current->personality) == PER_LINUX32) 
-		err |= copy_to_user(&name->machine, "i686", 5); 		
+	if (personality(current->personality) == PER_LINUX32)
+		err |= copy_to_user(&name->machine, "i686", 5);
 	return err ? -EFAULT : 0;
 }

arch/x86/kernel/syscall_64.c

@@ -8,12 +8,12 @@
 #define __NO_STUBS
 
 #define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
-#undef _ASM_X86_64_UNISTD_H_
+#undef ASM_X86__UNISTD_64_H
 #include <asm/unistd_64.h>
 
 #undef __SYSCALL
 #define __SYSCALL(nr, sym) [nr] = sym,
-#undef _ASM_X86_64_UNISTD_H_
+#undef ASM_X86__UNISTD_64_H
 
 typedef void (*sys_call_ptr_t)(void);
 

arch/x86/kernel/time_32.c

@@ -36,6 +36,7 @@
 #include <asm/arch_hooks.h>
 #include <asm/hpet.h>
 #include <asm/time.h>
+#include <asm/timer.h>
 
 #include "do_timer.h"
 

arch/x86/kernel/tls.c

@@ -10,6 +10,7 @@
 #include <asm/ldt.h>
 #include <asm/processor.h>
 #include <asm/proto.h>
+#include <asm/syscalls.h>
 
 #include "tls.h"
 

arch/x86/kernel/traps_64.c

@@ -32,6 +32,8 @@
 #include <linux/bug.h>
 #include <linux/nmi.h>
 #include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/io.h>
 
 #if defined(CONFIG_EDAC)
 #include <linux/edac.h>
@@ -45,9 +47,6 @@
 #include <asm/unwind.h>
 #include <asm/desc.h>
 #include <asm/i387.h>
-#include <asm/nmi.h>
-#include <asm/smp.h>
-#include <asm/io.h>
 #include <asm/pgalloc.h>
 #include <asm/proto.h>
 #include <asm/pda.h>
@@ -85,7 +84,8 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
 
 void printk_address(unsigned long address, int reliable)
 {
-	printk(" [<%016lx>] %s%pS\n", address, reliable ? "": "? ", (void *) address);
+	printk(" [<%016lx>] %s%pS\n",
+			address, reliable ?	"" : "? ", (void *) address);
 }
 
 static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
@@ -98,7 +98,8 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
 		[STACKFAULT_STACK - 1] = "#SS",
 		[MCE_STACK - 1] = "#MC",
 #if DEBUG_STKSZ > EXCEPTION_STKSZ
-		[N_EXCEPTION_STACKS ... N_EXCEPTION_STACKS + DEBUG_STKSZ / EXCEPTION_STKSZ - 2] = "#DB[?]"
+		[N_EXCEPTION_STACKS ...
+			N_EXCEPTION_STACKS + DEBUG_STKSZ / EXCEPTION_STKSZ - 2] = "#DB[?]"
 #endif
 	};
 	unsigned k;
@@ -163,7 +164,7 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack,
 }
 
 /*
- * x86-64 can have up to three kernel stacks: 
+ * x86-64 can have up to three kernel stacks:
  * process stack
  * interrupt stack
  * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
@@ -219,7 +220,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 		const struct stacktrace_ops *ops, void *data)
 {
 	const unsigned cpu = get_cpu();
-	unsigned long *irqstack_end = (unsigned long*)cpu_pda(cpu)->irqstackptr;
+	unsigned long *irqstack_end = (unsigned long *)cpu_pda(cpu)->irqstackptr;
 	unsigned used = 0;
 	struct thread_info *tinfo;
 
@@ -237,7 +238,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 	if (!bp) {
 		if (task == current) {
 			/* Grab bp right from our regs */
-			asm("movq %%rbp, %0" : "=r" (bp) :);
+			asm("movq %%rbp, %0" : "=r" (bp) : );
 		} else {
 			/* bp is the last reg pushed by switch_to */
 			bp = *(unsigned long *) task->thread.sp;
@@ -339,9 +340,8 @@ static void
 show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
 		unsigned long *stack, unsigned long bp, char *log_lvl)
 {
-	printk("\nCall Trace:\n");
+	printk("Call Trace:\n");
 	dump_trace(task, regs, stack, bp, &print_trace_ops, log_lvl);
-	printk("\n");
 }
 
 void show_trace(struct task_struct *task, struct pt_regs *regs,
@@ -357,11 +357,15 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
 	unsigned long *stack;
 	int i;
 	const int cpu = smp_processor_id();
-	unsigned long *irqstack_end = (unsigned long *) (cpu_pda(cpu)->irqstackptr);
-	unsigned long *irqstack = (unsigned long *) (cpu_pda(cpu)->irqstackptr - IRQSTACKSIZE);
+	unsigned long *irqstack_end =
+		(unsigned long *) (cpu_pda(cpu)->irqstackptr);
+	unsigned long *irqstack =
+		(unsigned long *) (cpu_pda(cpu)->irqstackptr - IRQSTACKSIZE);
 
-	// debugging aid: "show_stack(NULL, NULL);" prints the
-	// back trace for this cpu.
+	/*
+	 * debugging aid: "show_stack(NULL, NULL);" prints the
+	 * back trace for this cpu.
+	 */
 
 	if (sp == NULL) {
 		if (task)
@@ -386,6 +390,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
 		printk(" %016lx", *stack++);
 		touch_nmi_watchdog();
 	}
+	printk("\n");
 	show_trace_log_lvl(task, regs, sp, bp, log_lvl);
 }
 
@@ -404,7 +409,7 @@ void dump_stack(void)
 
 #ifdef CONFIG_FRAME_POINTER
 	if (!bp)
-		asm("movq %%rbp, %0" : "=r" (bp):);
+		asm("movq %%rbp, %0" : "=r" (bp) : );
 #endif
 
 	printk("Pid: %d, comm: %.20s %s %s %.*s\n",
@@ -414,7 +419,6 @@ void dump_stack(void)
 		init_utsname()->version);
 	show_trace(NULL, NULL, &stack, bp);
 }
-
 EXPORT_SYMBOL(dump_stack);
 
 void show_registers(struct pt_regs *regs)
@@ -443,7 +447,6 @@ void show_registers(struct pt_regs *regs)
 		printk("Stack: ");
 		show_stack_log_lvl(NULL, regs, (unsigned long *)sp,
 				regs->bp, "");
-		printk("\n");
 
 		printk(KERN_EMERG "Code: ");
 
@@ -493,7 +496,7 @@ unsigned __kprobes long oops_begin(void)
 	raw_local_irq_save(flags);
 	cpu = smp_processor_id();
 	if (!__raw_spin_trylock(&die_lock)) {
-		if (cpu == die_owner) 
+		if (cpu == die_owner)
 			/* nested oops. should stop eventually */;
 		else
 			__raw_spin_lock(&die_lock);
@@ -638,7 +641,7 @@ kernel_trap:
 }
 
 #define DO_ERROR(trapnr, signr, str, name) \
-asmlinkage void do_##name(struct pt_regs * regs, long error_code)	\
+asmlinkage void do_##name(struct pt_regs *regs, long error_code)	\
 {									\
 	if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr)	\
 							== NOTIFY_STOP)	\
@@ -648,7 +651,7 @@ asmlinkage void do_##name(struct pt_regs * regs, long error_code)	\
 }
 
 #define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr)		\
-asmlinkage void do_##name(struct pt_regs * regs, long error_code)	\
+asmlinkage void do_##name(struct pt_regs *regs, long error_code)	\
 {									\
 	siginfo_t info;							\
 	info.si_signo = signr;						\
@@ -683,7 +686,7 @@ asmlinkage void do_stack_segment(struct pt_regs *regs, long error_code)
 	preempt_conditional_cli(regs);
 }
 
-asmlinkage void do_double_fault(struct pt_regs * regs, long error_code)
+asmlinkage void do_double_fault(struct pt_regs *regs, long error_code)
 {
 	static const char str[] = "double fault";
 	struct task_struct *tsk = current;
@@ -778,9 +781,10 @@ io_check_error(unsigned char reason, struct pt_regs *regs)
 }
 
 static notrace __kprobes void
-unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
+unknown_nmi_error(unsigned char reason, struct pt_regs *regs)
 {
-	if (notify_die(DIE_NMIUNKNOWN, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP)
+	if (notify_die(DIE_NMIUNKNOWN, "nmi", regs, reason, 2, SIGINT) ==
+			NOTIFY_STOP)
 		return;
 	printk(KERN_EMERG "Uhhuh. NMI received for unknown reason %02x.\n",
 		reason);
@@ -882,7 +886,7 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
 	else if (user_mode(eregs))
 		regs = task_pt_regs(current);
 	/* Exception from kernel and interrupts are enabled. Move to
- 	   kernel process stack. */
+	   kernel process stack. */
 	else if (eregs->flags & X86_EFLAGS_IF)
 		regs = (struct pt_regs *)(eregs->sp -= sizeof(struct pt_regs));
 	if (eregs != regs)
@@ -891,7 +895,7 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
 }
 
 /* runs on IST stack. */
-asmlinkage void __kprobes do_debug(struct pt_regs * regs,
+asmlinkage void __kprobes do_debug(struct pt_regs *regs,
 				   unsigned long error_code)
 {
 	struct task_struct *tsk = current;
@@ -1035,7 +1039,7 @@ asmlinkage void do_coprocessor_error(struct pt_regs *regs)
 
 asmlinkage void bad_intr(void)
 {
-	printk("bad interrupt"); 
+	printk("bad interrupt");
 }
 
 asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs)
@@ -1047,7 +1051,7 @@ asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs)
 
 	conditional_sti(regs);
 	if (!user_mode(regs) &&
-        	kernel_math_error(regs, "kernel simd math error", 19))
+			kernel_math_error(regs, "kernel simd math error", 19))
 		return;
 
 	/*
@@ -1092,7 +1096,7 @@ asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs)
 	force_sig_info(SIGFPE, &info, task);
 }
 
-asmlinkage void do_spurious_interrupt_bug(struct pt_regs * regs)
+asmlinkage void do_spurious_interrupt_bug(struct pt_regs *regs)
 {
 }
 
@@ -1149,8 +1153,10 @@ void __init trap_init(void)
 	set_intr_gate(0, &divide_error);
 	set_intr_gate_ist(1, &debug, DEBUG_STACK);
 	set_intr_gate_ist(2, &nmi, NMI_STACK);
- 	set_system_gate_ist(3, &int3, DEBUG_STACK); /* int3 can be called from all */
-	set_system_gate(4, &overflow); /* int4 can be called from all */
+	/* int3 can be called from all */
+	set_system_gate_ist(3, &int3, DEBUG_STACK);
+	/* int4 can be called from all */
+	set_system_gate(4, &overflow);
 	set_intr_gate(5, &bounds);
 	set_intr_gate(6, &invalid_op);
 	set_intr_gate(7, &device_not_available);

arch/x86/kernel/tsc.c

@@ -104,7 +104,7 @@ __setup("notsc", notsc_setup);
 /*
  * Read TSC and the reference counters. Take care of SMI disturbance
  */
-static u64 tsc_read_refs(u64 *pm, u64 *hpet)
+static u64 tsc_read_refs(u64 *p, int hpet)
 {
 	u64 t1, t2;
 	int i;
@@ -112,9 +112,9 @@ static u64 tsc_read_refs(u64 *pm, u64 *hpet)
 	for (i = 0; i < MAX_RETRIES; i++) {
 		t1 = get_cycles();
 		if (hpet)
-			*hpet = hpet_readl(HPET_COUNTER) & 0xFFFFFFFF;
+			*p = hpet_readl(HPET_COUNTER) & 0xFFFFFFFF;
 		else
-			*pm = acpi_pm_read_early();
+			*p = acpi_pm_read_early();
 		t2 = get_cycles();
 		if ((t2 - t1) < SMI_TRESHOLD)
 			return t2;
@@ -122,6 +122,52 @@ static u64 tsc_read_refs(u64 *pm, u64 *hpet)
 	return ULLONG_MAX;
 }
 
+/*
+ * Calculate the TSC frequency from HPET reference
+ */
+static unsigned long calc_hpet_ref(u64 deltatsc, u64 hpet1, u64 hpet2)
+{
+	u64 tmp;
+
+	if (hpet2 < hpet1)
+		hpet2 += 0x100000000ULL;
+	hpet2 -= hpet1;
+	tmp = ((u64)hpet2 * hpet_readl(HPET_PERIOD));
+	do_div(tmp, 1000000);
+	do_div(deltatsc, tmp);
+
+	return (unsigned long) deltatsc;
+}
+
+/*
+ * Calculate the TSC frequency from PMTimer reference
+ */
+static unsigned long calc_pmtimer_ref(u64 deltatsc, u64 pm1, u64 pm2)
+{
+	u64 tmp;
+
+	if (!pm1 && !pm2)
+		return ULONG_MAX;
+
+	if (pm2 < pm1)
+		pm2 += (u64)ACPI_PM_OVRRUN;
+	pm2 -= pm1;
+	tmp = pm2 * 1000000000LL;
+	do_div(tmp, PMTMR_TICKS_PER_SEC);
+	do_div(deltatsc, tmp);
+
+	return (unsigned long) deltatsc;
+}
+
+#define CAL_MS		10
+#define CAL_LATCH	(CLOCK_TICK_RATE / (1000 / CAL_MS))
+#define CAL_PIT_LOOPS	1000
+
+#define CAL2_MS		50
+#define CAL2_LATCH	(CLOCK_TICK_RATE / (1000 / CAL2_MS))
+#define CAL2_PIT_LOOPS	5000
+
+
 /*
  * Try to calibrate the TSC against the Programmable
  * Interrupt Timer and return the frequency of the TSC
@@ -129,7 +175,7 @@ static u64 tsc_read_refs(u64 *pm, u64 *hpet)
  *
  * Return ULONG_MAX on failure to calibrate.
  */
-static unsigned long pit_calibrate_tsc(void)
+static unsigned long pit_calibrate_tsc(u32 latch, unsigned long ms, int loopmin)
 {
 	u64 tsc, t1, t2, delta;
 	unsigned long tscmin, tscmax;
@@ -144,8 +190,8 @@ static unsigned long pit_calibrate_tsc(void)
 	 * (LSB then MSB) to begin countdown.
 	 */
 	outb(0xb0, 0x43);
-	outb((CLOCK_TICK_RATE / (1000 / 50)) & 0xff, 0x42);
-	outb((CLOCK_TICK_RATE / (1000 / 50)) >> 8, 0x42);
+	outb(latch & 0xff, 0x42);
+	outb(latch >> 8, 0x42);
 
 	tsc = t1 = t2 = get_cycles();
 
@@ -166,31 +212,154 @@ static unsigned long pit_calibrate_tsc(void)
 	/*
 	 * Sanity checks:
 	 *
-	 * If we were not able to read the PIT more than 5000
+	 * If we were not able to read the PIT more than loopmin
 	 * times, then we have been hit by a massive SMI
 	 *
 	 * If the maximum is 10 times larger than the minimum,
 	 * then we got hit by an SMI as well.
 	 */
-	if (pitcnt < 5000 || tscmax > 10 * tscmin)
+	if (pitcnt < loopmin || tscmax > 10 * tscmin)
 		return ULONG_MAX;
 
 	/* Calculate the PIT value */
 	delta = t2 - t1;
-	do_div(delta, 50);
+	do_div(delta, ms);
 	return delta;
 }
 
+/*
+ * This reads the current MSB of the PIT counter, and
+ * checks if we are running on sufficiently fast and
+ * non-virtualized hardware.
+ *
+ * Our expectations are:
+ *
+ *  - the PIT is running at roughly 1.19MHz
+ *
+ *  - each IO is going to take about 1us on real hardware,
+ *    but we allow it to be much faster (by a factor of 10) or
+ *    _slightly_ slower (ie we allow up to a 2us read+counter
+ *    update - anything else implies a unacceptably slow CPU
+ *    or PIT for the fast calibration to work.
+ *
+ *  - with 256 PIT ticks to read the value, we have 214us to
+ *    see the same MSB (and overhead like doing a single TSC
+ *    read per MSB value etc).
+ *
+ *  - We're doing 2 reads per loop (LSB, MSB), and we expect
+ *    them each to take about a microsecond on real hardware.
+ *    So we expect a count value of around 100. But we'll be
+ *    generous, and accept anything over 50.
+ *
+ *  - if the PIT is stuck, and we see *many* more reads, we
+ *    return early (and the next caller of pit_expect_msb()
+ *    then consider it a failure when they don't see the
+ *    next expected value).
+ *
+ * These expectations mean that we know that we have seen the
+ * transition from one expected value to another with a fairly
+ * high accuracy, and we didn't miss any events. We can thus
+ * use the TSC value at the transitions to calculate a pretty
+ * good value for the TSC frequencty.
+ */
+static inline int pit_expect_msb(unsigned char val)
+{
+	int count = 0;
+
+	for (count = 0; count < 50000; count++) {
+		/* Ignore LSB */
+		inb(0x42);
+		if (inb(0x42) != val)
+			break;
+	}
+	return count > 50;
+}
+
+/*
+ * How many MSB values do we want to see? We aim for a
+ * 15ms calibration, which assuming a 2us counter read
+ * error should give us roughly 150 ppm precision for
+ * the calibration.
+ */
+#define QUICK_PIT_MS 15
+#define QUICK_PIT_ITERATIONS (QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)
+
+static unsigned long quick_pit_calibrate(void)
+{
+	/* Set the Gate high, disable speaker */
+	outb((inb(0x61) & ~0x02) | 0x01, 0x61);
+
+	/*
+	 * Counter 2, mode 0 (one-shot), binary count
+	 *
+	 * NOTE! Mode 2 decrements by two (and then the
+	 * output is flipped each time, giving the same
+	 * final output frequency as a decrement-by-one),
+	 * so mode 0 is much better when looking at the
+	 * individual counts.
+	 */
+	outb(0xb0, 0x43);
+
+	/* Start at 0xffff */
+	outb(0xff, 0x42);
+	outb(0xff, 0x42);
+
+	if (pit_expect_msb(0xff)) {
+		int i;
+		u64 t1, t2, delta;
+		unsigned char expect = 0xfe;
+
+		t1 = get_cycles();
+		for (i = 0; i < QUICK_PIT_ITERATIONS; i++, expect--) {
+			if (!pit_expect_msb(expect))
+				goto failed;
+		}
+		t2 = get_cycles();
+
+		/*
+		 * Make sure we can rely on the second TSC timestamp:
+		 */
+		if (!pit_expect_msb(expect))
+			goto failed;
+
+		/*
+		 * Ok, if we get here, then we've seen the
+		 * MSB of the PIT decrement QUICK_PIT_ITERATIONS
+		 * times, and each MSB had many hits, so we never
+		 * had any sudden jumps.
+		 *
+		 * As a result, we can depend on there not being
+		 * any odd delays anywhere, and the TSC reads are
+		 * reliable.
+		 *
+		 * kHz = ticks / time-in-seconds / 1000;
+		 * kHz = (t2 - t1) / (QPI * 256 / PIT_TICK_RATE) / 1000
+		 * kHz = ((t2 - t1) * PIT_TICK_RATE) / (QPI * 256 * 1000)
+		 */
+		delta = (t2 - t1)*PIT_TICK_RATE;
+		do_div(delta, QUICK_PIT_ITERATIONS*256*1000);
+		printk("Fast TSC calibration using PIT\n");
+		return delta;
+	}
+failed:
+	return 0;
+}
 
 /**
  * native_calibrate_tsc - calibrate the tsc on boot
  */
 unsigned long native_calibrate_tsc(void)
 {
-	u64 tsc1, tsc2, delta, pm1, pm2, hpet1, hpet2;
+	u64 tsc1, tsc2, delta, ref1, ref2;
 	unsigned long tsc_pit_min = ULONG_MAX, tsc_ref_min = ULONG_MAX;
-	unsigned long flags;
-	int hpet = is_hpet_enabled(), i;
+	unsigned long flags, latch, ms, fast_calibrate;
+	int hpet = is_hpet_enabled(), i, loopmin;
+
+	local_irq_save(flags);
+	fast_calibrate = quick_pit_calibrate();
+	local_irq_restore(flags);
+	if (fast_calibrate)
+		return fast_calibrate;
 
 	/*
 	 * Run 5 calibration loops to get the lowest frequency value
@@ -216,7 +385,13 @@ unsigned long native_calibrate_tsc(void)
 	 * calibration delay loop as we have to wait for a certain
 	 * amount of time anyway.
 	 */
-	for (i = 0; i < 5; i++) {
+
+	/* Preset PIT loop values */
+	latch = CAL_LATCH;
+	ms = CAL_MS;
+	loopmin = CAL_PIT_LOOPS;
+
+	for (i = 0; i < 3; i++) {
 		unsigned long tsc_pit_khz;
 
 		/*
@@ -226,16 +401,16 @@ unsigned long native_calibrate_tsc(void)
 		 * read the end value.
 		 */
 		local_irq_save(flags);
-		tsc1 = tsc_read_refs(&pm1, hpet ? &hpet1 : NULL);
-		tsc_pit_khz = pit_calibrate_tsc();
-		tsc2 = tsc_read_refs(&pm2, hpet ? &hpet2 : NULL);
+		tsc1 = tsc_read_refs(&ref1, hpet);
+		tsc_pit_khz = pit_calibrate_tsc(latch, ms, loopmin);
+		tsc2 = tsc_read_refs(&ref2, hpet);
 		local_irq_restore(flags);
 
 		/* Pick the lowest PIT TSC calibration so far */
 		tsc_pit_min = min(tsc_pit_min, tsc_pit_khz);
 
 		/* hpet or pmtimer available ? */
-		if (!hpet && !pm1 && !pm2)
+		if (!hpet && !ref1 && !ref2)
 			continue;
 
 		/* Check, whether the sampling was disturbed by an SMI */
@@ -243,23 +418,41 @@ unsigned long native_calibrate_tsc(void)
 			continue;
 
 		tsc2 = (tsc2 - tsc1) * 1000000LL;
+		if (hpet)
+			tsc2 = calc_hpet_ref(tsc2, ref1, ref2);
+		else
+			tsc2 = calc_pmtimer_ref(tsc2, ref1, ref2);
 
-		if (hpet) {
-			if (hpet2 < hpet1)
-				hpet2 += 0x100000000ULL;
-			hpet2 -= hpet1;
-			tsc1 = ((u64)hpet2 * hpet_readl(HPET_PERIOD));
-			do_div(tsc1, 1000000);
-		} else {
-			if (pm2 < pm1)
-				pm2 += (u64)ACPI_PM_OVRRUN;
-			pm2 -= pm1;
-			tsc1 = pm2 * 1000000000LL;
-			do_div(tsc1, PMTMR_TICKS_PER_SEC);
+		tsc_ref_min = min(tsc_ref_min, (unsigned long) tsc2);
+
+		/* Check the reference deviation */
+		delta = ((u64) tsc_pit_min) * 100;
+		do_div(delta, tsc_ref_min);
+
+		/*
+		 * If both calibration results are inside a 10% window
+		 * then we can be sure, that the calibration
+		 * succeeded. We break out of the loop right away. We
+		 * use the reference value, as it is more precise.
+		 */
+		if (delta >= 90 && delta <= 110) {
+			printk(KERN_INFO
+			       "TSC: PIT calibration matches %s. %d loops\n",
+			       hpet ? "HPET" : "PMTIMER", i + 1);
+			return tsc_ref_min;
 		}
 
-		do_div(tsc2, tsc1);
-		tsc_ref_min = min(tsc_ref_min, (unsigned long) tsc2);
+		/*
+		 * Check whether PIT failed more than once. This
+		 * happens in virtualized environments. We need to
+		 * give the virtual PC a slightly longer timeframe for
+		 * the HPET/PMTIMER to make the result precise.
+		 */
+		if (i == 1 && tsc_pit_min == ULONG_MAX) {
+			latch = CAL2_LATCH;
+			ms = CAL2_MS;
+			loopmin = CAL2_PIT_LOOPS;
+		}
 	}
 
 	/*
@@ -270,7 +463,7 @@ unsigned long native_calibrate_tsc(void)
 		printk(KERN_WARNING "TSC: Unable to calibrate against PIT\n");
 
 		/* We don't have an alternative source, disable TSC */
-		if (!hpet && !pm1 && !pm2) {
+		if (!hpet && !ref1 && !ref2) {
 			printk("TSC: No reference (HPET/PMTIMER) available\n");
 			return 0;
 		}
@@ -278,7 +471,7 @@ unsigned long native_calibrate_tsc(void)
 		/* The alternative source failed as well, disable TSC */
 		if (tsc_ref_min == ULONG_MAX) {
 			printk(KERN_WARNING "TSC: HPET/PMTIMER calibration "
-			       "failed due to SMI disturbance.\n");
+			       "failed.\n");
 			return 0;
 		}
 
@@ -290,44 +483,25 @@ unsigned long native_calibrate_tsc(void)
 	}
 
 	/* We don't have an alternative source, use the PIT calibration value */
-	if (!hpet && !pm1 && !pm2) {
+	if (!hpet && !ref1 && !ref2) {
 		printk(KERN_INFO "TSC: Using PIT calibration value\n");
 		return tsc_pit_min;
 	}
 
 	/* The alternative source failed, use the PIT calibration value */
 	if (tsc_ref_min == ULONG_MAX) {
-		printk(KERN_WARNING "TSC: HPET/PMTIMER calibration failed due "
-		       "to SMI disturbance. Using PIT calibration\n");
+		printk(KERN_WARNING "TSC: HPET/PMTIMER calibration failed. "
+		       "Using PIT calibration\n");
 		return tsc_pit_min;
 	}
 
-	/* Check the reference deviation */
-	delta = ((u64) tsc_pit_min) * 100;
-	do_div(delta, tsc_ref_min);
-
-	/*
-	 * If both calibration results are inside a 5% window, the we
-	 * use the lower frequency of those as it is probably the
-	 * closest estimate.
-	 */
-	if (delta >= 95 && delta <= 105) {
-		printk(KERN_INFO "TSC: PIT calibration confirmed by %s.\n",
-		       hpet ? "HPET" : "PMTIMER");
-		printk(KERN_INFO "TSC: using %s calibration value\n",
-		       tsc_pit_min <= tsc_ref_min ? "PIT" :
-		       hpet ? "HPET" : "PMTIMER");
-		return tsc_pit_min <= tsc_ref_min ? tsc_pit_min : tsc_ref_min;
-	}
-
-	printk(KERN_WARNING "TSC: PIT calibration deviates from %s: %lu %lu.\n",
-	       hpet ? "HPET" : "PMTIMER", tsc_pit_min, tsc_ref_min);
-
 	/*
 	 * The calibration values differ too much. In doubt, we use
 	 * the PIT value as we know that there are PMTIMERs around
-	 * running at double speed.
+	 * running at double speed. At least we let the user know:
 	 */
+	printk(KERN_WARNING "TSC: PIT calibration deviates from %s: %lu %lu.\n",
+	       hpet ? "HPET" : "PMTIMER", tsc_pit_min, tsc_ref_min);
 	printk(KERN_INFO "TSC: Using PIT calibration value\n");
 	return tsc_pit_min;
 }

arch/x86/kernel/visws_quirks.c

@@ -25,45 +25,31 @@
 #include <asm/visws/cobalt.h>
 #include <asm/visws/piix4.h>
 #include <asm/arch_hooks.h>
+#include <asm/io_apic.h>
 #include <asm/fixmap.h>
 #include <asm/reboot.h>
 #include <asm/setup.h>
 #include <asm/e820.h>
-#include <asm/smp.h>
 #include <asm/io.h>
 
 #include <mach_ipi.h>
 
 #include "mach_apic.h"
 
-#include <linux/init.h>
-#include <linux/smp.h>
-
 #include <linux/kernel_stat.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
 
-#include <asm/io.h>
-#include <asm/apic.h>
 #include <asm/i8259.h>
 #include <asm/irq_vectors.h>
-#include <asm/visws/cobalt.h>
 #include <asm/visws/lithium.h>
-#include <asm/visws/piix4.h>
 
 #include <linux/sched.h>
 #include <linux/kernel.h>
-#include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/pci_ids.h>
 
 extern int no_broadcast;
 
-#include <asm/io.h>
 #include <asm/apic.h>
-#include <asm/arch_hooks.h>
-#include <asm/visws/cobalt.h>
-#include <asm/visws/lithium.h>
 
 char visws_board_type	= -1;
 char visws_board_rev	= -1;

arch/x86/kernel/vm86_32.c

@@ -46,6 +46,7 @@
 #include <asm/io.h>
 #include <asm/tlbflush.h>
 #include <asm/irq.h>
+#include <asm/syscalls.h>
 
 /*
  * Known problems:

arch/x86/kernel/vmi_32.c

@@ -393,13 +393,13 @@ static void *vmi_kmap_atomic_pte(struct page *page, enum km_type type)
 }
 #endif
 
-static void vmi_allocate_pte(struct mm_struct *mm, u32 pfn)
+static void vmi_allocate_pte(struct mm_struct *mm, unsigned long pfn)
 {
 	vmi_set_page_type(pfn, VMI_PAGE_L1);
 	vmi_ops.allocate_page(pfn, VMI_PAGE_L1, 0, 0, 0);
 }
 
-static void vmi_allocate_pmd(struct mm_struct *mm, u32 pfn)
+static void vmi_allocate_pmd(struct mm_struct *mm, unsigned long pfn)
 {
  	/*
 	 * This call comes in very early, before mem_map is setup.
@@ -410,20 +410,20 @@ static void vmi_allocate_pmd(struct mm_struct *mm, u32 pfn)
 	vmi_ops.allocate_page(pfn, VMI_PAGE_L2, 0, 0, 0);
 }
 
-static void vmi_allocate_pmd_clone(u32 pfn, u32 clonepfn, u32 start, u32 count)
+static void vmi_allocate_pmd_clone(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count)
 {
  	vmi_set_page_type(pfn, VMI_PAGE_L2 | VMI_PAGE_CLONE);
 	vmi_check_page_type(clonepfn, VMI_PAGE_L2);
 	vmi_ops.allocate_page(pfn, VMI_PAGE_L2 | VMI_PAGE_CLONE, clonepfn, start, count);
 }
 
-static void vmi_release_pte(u32 pfn)
+static void vmi_release_pte(unsigned long pfn)
 {
 	vmi_ops.release_page(pfn, VMI_PAGE_L1);
 	vmi_set_page_type(pfn, VMI_PAGE_NORMAL);
 }
 
-static void vmi_release_pmd(u32 pfn)
+static void vmi_release_pmd(unsigned long pfn)
 {
 	vmi_ops.release_page(pfn, VMI_PAGE_L2);
 	vmi_set_page_type(pfn, VMI_PAGE_NORMAL);

arch/x86/lib/msr-on-cpu.c

@@ -16,37 +16,46 @@ static void __rdmsr_on_cpu(void *info)
 	rdmsr(rv->msr_no, rv->l, rv->h);
 }
 
-static void __rdmsr_safe_on_cpu(void *info)
+static void __wrmsr_on_cpu(void *info)
 {
 	struct msr_info *rv = info;
 
-	rv->err = rdmsr_safe(rv->msr_no, &rv->l, &rv->h);
+	wrmsr(rv->msr_no, rv->l, rv->h);
 }
 
-static int _rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h, int safe)
+int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
 {
-	int err = 0;
+	int err;
 	struct msr_info rv;
 
 	rv.msr_no = msr_no;
-	if (safe) {
-		err = smp_call_function_single(cpu, __rdmsr_safe_on_cpu,
-					       &rv, 1);
-		err = err ? err : rv.err;
-	} else {
-		err = smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1);
-	}
+	err = smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1);
 	*l = rv.l;
 	*h = rv.h;
 
 	return err;
 }
 
-static void __wrmsr_on_cpu(void *info)
+int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
+{
+	int err;
+	struct msr_info rv;
+
+	rv.msr_no = msr_no;
+	rv.l = l;
+	rv.h = h;
+	err = smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1);
+
+	return err;
+}
+
+/* These "safe" variants are slower and should be used when the target MSR
+   may not actually exist. */
+static void __rdmsr_safe_on_cpu(void *info)
 {
 	struct msr_info *rv = info;
 
-	wrmsr(rv->msr_no, rv->l, rv->h);
+	rv->err = rdmsr_safe(rv->msr_no, &rv->l, &rv->h);
 }
 
 static void __wrmsr_safe_on_cpu(void *info)
@@ -56,45 +65,30 @@ static void __wrmsr_safe_on_cpu(void *info)
 	rv->err = wrmsr_safe(rv->msr_no, rv->l, rv->h);
 }
 
-static int _wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h, int safe)
+int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
 {
-	int err = 0;
+	int err;
 	struct msr_info rv;
 
 	rv.msr_no = msr_no;
-	rv.l = l;
-	rv.h = h;
-	if (safe) {
-		err = smp_call_function_single(cpu, __wrmsr_safe_on_cpu,
-					       &rv, 1);
-		err = err ? err : rv.err;
-	} else {
-		err = smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1);
-	}
-
-	return err;
-}
+	err = smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 1);
+	*l = rv.l;
+	*h = rv.h;
 
-int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
-{
-	return _wrmsr_on_cpu(cpu, msr_no, l, h, 0);
+	return err ? err : rv.err;
 }
 
-int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
-{
-	return _rdmsr_on_cpu(cpu, msr_no, l, h, 0);
-}
-
-/* These "safe" variants are slower and should be used when the target MSR
-   may not actually exist. */
 int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
 {
-	return _wrmsr_on_cpu(cpu, msr_no, l, h, 1);
-}
+	int err;
+	struct msr_info rv;
 
-int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
-{
-	return _rdmsr_on_cpu(cpu, msr_no, l, h, 1);
+	rv.msr_no = msr_no;
+	rv.l = l;
+	rv.h = h;
+	err = smp_call_function_single(cpu, __wrmsr_safe_on_cpu, &rv, 1);
+
+	return err ? err : rv.err;
 }
 
 EXPORT_SYMBOL(rdmsr_on_cpu);

arch/x86/lib/string_32.c

@@ -22,7 +22,7 @@ char *strcpy(char *dest, const char *src)
 		"testb %%al,%%al\n\t"
 		"jne 1b"
 		: "=&S" (d0), "=&D" (d1), "=&a" (d2)
-		:"0" (src), "1" (dest) : "memory");
+		: "0" (src), "1" (dest) : "memory");
 	return dest;
 }
 EXPORT_SYMBOL(strcpy);
@@ -42,7 +42,7 @@ char *strncpy(char *dest, const char *src, size_t count)
 		"stosb\n"
 		"2:"
 		: "=&S" (d0), "=&D" (d1), "=&c" (d2), "=&a" (d3)
-		:"0" (src), "1" (dest), "2" (count) : "memory");
+		: "0" (src), "1" (dest), "2" (count) : "memory");
 	return dest;
 }
 EXPORT_SYMBOL(strncpy);
@@ -60,7 +60,7 @@ char *strcat(char *dest, const char *src)
 		"testb %%al,%%al\n\t"
 		"jne 1b"
 		: "=&S" (d0), "=&D" (d1), "=&a" (d2), "=&c" (d3)
-		: "0" (src), "1" (dest), "2" (0), "3" (0xffffffffu): "memory");
+		: "0" (src), "1" (dest), "2" (0), "3" (0xffffffffu) : "memory");
 	return dest;
 }
 EXPORT_SYMBOL(strcat);
@@ -105,9 +105,9 @@ int strcmp(const char *cs, const char *ct)
 		"2:\tsbbl %%eax,%%eax\n\t"
 		"orb $1,%%al\n"
 		"3:"
-		:"=a" (res), "=&S" (d0), "=&D" (d1)
-		:"1" (cs), "2" (ct)
-		:"memory");
+		: "=a" (res), "=&S" (d0), "=&D" (d1)
+		: "1" (cs), "2" (ct)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(strcmp);
@@ -130,9 +130,9 @@ int strncmp(const char *cs, const char *ct, size_t count)
 		"3:\tsbbl %%eax,%%eax\n\t"
 		"orb $1,%%al\n"
 		"4:"
-		:"=a" (res), "=&S" (d0), "=&D" (d1), "=&c" (d2)
-		:"1" (cs), "2" (ct), "3" (count)
-		:"memory");
+		: "=a" (res), "=&S" (d0), "=&D" (d1), "=&c" (d2)
+		: "1" (cs), "2" (ct), "3" (count)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(strncmp);
@@ -152,9 +152,9 @@ char *strchr(const char *s, int c)
 		"movl $1,%1\n"
 		"2:\tmovl %1,%0\n\t"
 		"decl %0"
-		:"=a" (res), "=&S" (d0)
-		:"1" (s), "0" (c)
-		:"memory");
+		: "=a" (res), "=&S" (d0)
+		: "1" (s), "0" (c)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(strchr);
@@ -169,9 +169,9 @@ size_t strlen(const char *s)
 		"scasb\n\t"
 		"notl %0\n\t"
 		"decl %0"
-		:"=c" (res), "=&D" (d0)
-		:"1" (s), "a" (0), "0" (0xffffffffu)
-		:"memory");
+		: "=c" (res), "=&D" (d0)
+		: "1" (s), "a" (0), "0" (0xffffffffu)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(strlen);
@@ -189,9 +189,9 @@ void *memchr(const void *cs, int c, size_t count)
 		"je 1f\n\t"
 		"movl $1,%0\n"
 		"1:\tdecl %0"
-		:"=D" (res), "=&c" (d0)
-		:"a" (c), "0" (cs), "1" (count)
-		:"memory");
+		: "=D" (res), "=&c" (d0)
+		: "a" (c), "0" (cs), "1" (count)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(memchr);
@@ -228,9 +228,9 @@ size_t strnlen(const char *s, size_t count)
 		"cmpl $-1,%1\n\t"
 		"jne 1b\n"
 		"3:\tsubl %2,%0"
-		:"=a" (res), "=&d" (d0)
-		:"c" (s), "1" (count)
-		:"memory");
+		: "=a" (res), "=&d" (d0)
+		: "c" (s), "1" (count)
+		: "memory");
 	return res;
 }
 EXPORT_SYMBOL(strnlen);

arch/x86/lib/strstr_32.c

@@ -23,9 +23,9 @@ __asm__ __volatile__(
 	"jne 1b\n\t"
 	"xorl %%eax,%%eax\n\t"
 	"2:"
-	:"=a" (__res), "=&c" (d0), "=&S" (d1)
-	:"0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
-	:"dx", "di");
+	: "=a" (__res), "=&c" (d0), "=&S" (d1)
+	: "0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
+	: "dx", "di");
 return __res;
 }
 

arch/x86/mach-default/setup.c

@@ -10,13 +10,15 @@
 #include <asm/e820.h>
 #include <asm/setup.h>
 
+#include <mach_ipi.h>
+
 #ifdef CONFIG_HOTPLUG_CPU
 #define DEFAULT_SEND_IPI	(1)
 #else
 #define DEFAULT_SEND_IPI	(0)
 #endif
 
-int no_broadcast=DEFAULT_SEND_IPI;
+int no_broadcast = DEFAULT_SEND_IPI;
 
 /**
  * pre_intr_init_hook - initialisation prior to setting up interrupt vectors

arch/x86/mm/discontig_32.c

@@ -328,7 +328,7 @@ void __init initmem_init(unsigned long start_pfn,
 
 	get_memcfg_numa();
 
-	kva_pages = round_up(calculate_numa_remap_pages(), PTRS_PER_PTE);
+	kva_pages = roundup(calculate_numa_remap_pages(), PTRS_PER_PTE);
 
 	kva_target_pfn = round_down(max_low_pfn - kva_pages, PTRS_PER_PTE);
 	do {

arch/x86/mm/dump_pagetables.c

@@ -148,8 +148,8 @@ static void note_page(struct seq_file *m, struct pg_state *st,
 	 * we have now. "break" is either changing perms, levels or
 	 * address space marker.
 	 */
-	prot = pgprot_val(new_prot) & ~(PTE_PFN_MASK);
-	cur = pgprot_val(st->current_prot) & ~(PTE_PFN_MASK);
+	prot = pgprot_val(new_prot) & PTE_FLAGS_MASK;
+	cur = pgprot_val(st->current_prot) & PTE_FLAGS_MASK;
 
 	if (!st->level) {
 		/* First entry */

arch/x86/mm/fault.c

@@ -35,6 +35,7 @@
 #include <asm/tlbflush.h>
 #include <asm/proto.h>
 #include <asm-generic/sections.h>
+#include <asm/traps.h>
 
 /*
  * Page fault error code bits
@@ -357,8 +358,6 @@ static int is_errata100(struct pt_regs *regs, unsigned long address)
 	return 0;
 }
 
-void do_invalid_op(struct pt_regs *, unsigned long);
-
 static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
 {
 #ifdef CONFIG_X86_F00F_BUG

arch/x86/mm/init_32.c

@@ -47,6 +47,7 @@
 #include <asm/paravirt.h>
 #include <asm/setup.h>
 #include <asm/cacheflush.h>
+#include <asm/smp.h>
 
 unsigned int __VMALLOC_RESERVE = 128 << 20;
 

arch/x86/mm/init_64.c

@@ -225,7 +225,7 @@ void __init init_extra_mapping_uc(unsigned long phys, unsigned long size)
 void __init cleanup_highmap(void)
 {
 	unsigned long vaddr = __START_KERNEL_map;
-	unsigned long end = round_up((unsigned long)_end, PMD_SIZE) - 1;
+	unsigned long end = roundup((unsigned long)_end, PMD_SIZE) - 1;
 	pmd_t *pmd = level2_kernel_pgt;
 	pmd_t *last_pmd = pmd + PTRS_PER_PMD;
 
@@ -451,14 +451,14 @@ static void __init find_early_table_space(unsigned long end)
 	unsigned long puds, pmds, ptes, tables, start;
 
 	puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
-	tables = round_up(puds * sizeof(pud_t), PAGE_SIZE);
+	tables = roundup(puds * sizeof(pud_t), PAGE_SIZE);
 	if (direct_gbpages) {
 		unsigned long extra;
 		extra = end - ((end>>PUD_SHIFT) << PUD_SHIFT);
 		pmds = (extra + PMD_SIZE - 1) >> PMD_SHIFT;
 	} else
 		pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
-	tables += round_up(pmds * sizeof(pmd_t), PAGE_SIZE);
+	tables += roundup(pmds * sizeof(pmd_t), PAGE_SIZE);
 
 	if (cpu_has_pse) {
 		unsigned long extra;
@@ -466,7 +466,7 @@ static void __init find_early_table_space(unsigned long end)
 		ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	} else
 		ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	tables += round_up(ptes * sizeof(pte_t), PAGE_SIZE);
+	tables += roundup(ptes * sizeof(pte_t), PAGE_SIZE);
 
 	/*
 	 * RED-PEN putting page tables only on node 0 could

arch/x86/mm/ioremap.c

@@ -421,7 +421,7 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
 	return;
 }
 
-int __initdata early_ioremap_debug;
+static int __initdata early_ioremap_debug;
 
 static int __init early_ioremap_debug_setup(char *str)
 {
@@ -547,7 +547,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
 }
 
 
-int __initdata early_ioremap_nested;
+static int __initdata early_ioremap_nested;
 
 static int __init check_early_ioremap_leak(void)
 {

arch/x86/mm/numa_64.c

@@ -79,7 +79,7 @@ static int __init allocate_cachealigned_memnodemap(void)
 		return 0;
 
 	addr = 0x8000;
-	nodemap_size = round_up(sizeof(s16) * memnodemapsize, L1_CACHE_BYTES);
+	nodemap_size = roundup(sizeof(s16) * memnodemapsize, L1_CACHE_BYTES);
 	nodemap_addr = find_e820_area(addr, max_pfn<<PAGE_SHIFT,
 				      nodemap_size, L1_CACHE_BYTES);
 	if (nodemap_addr == -1UL) {
@@ -176,10 +176,10 @@ void __init setup_node_bootmem(int nodeid, unsigned long start,
 	unsigned long start_pfn, last_pfn, bootmap_pages, bootmap_size;
 	unsigned long bootmap_start, nodedata_phys;
 	void *bootmap;
-	const int pgdat_size = round_up(sizeof(pg_data_t), PAGE_SIZE);
+	const int pgdat_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
 	int nid;
 
-	start = round_up(start, ZONE_ALIGN);
+	start = roundup(start, ZONE_ALIGN);
 
 	printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid,
 	       start, end);
@@ -210,9 +210,9 @@ void __init setup_node_bootmem(int nodeid, unsigned long start,
 	bootmap_pages = bootmem_bootmap_pages(last_pfn - start_pfn);
 	nid = phys_to_nid(nodedata_phys);
 	if (nid == nodeid)
-		bootmap_start = round_up(nodedata_phys + pgdat_size, PAGE_SIZE);
+		bootmap_start = roundup(nodedata_phys + pgdat_size, PAGE_SIZE);
 	else
-		bootmap_start = round_up(start, PAGE_SIZE);
+		bootmap_start = roundup(start, PAGE_SIZE);
 	/*
 	 * SMP_CACHE_BYTES could be enough, but init_bootmem_node like
 	 * to use that to align to PAGE_SIZE

arch/x86/mm/pageattr.c

@@ -84,7 +84,7 @@ static inline unsigned long highmap_start_pfn(void)
 
 static inline unsigned long highmap_end_pfn(void)
 {
-	return __pa(round_up((unsigned long)_end, PMD_SIZE)) >> PAGE_SHIFT;
+	return __pa(roundup((unsigned long)_end, PMD_SIZE)) >> PAGE_SHIFT;
 }
 
 #endif
@@ -906,11 +906,13 @@ int set_memory_ro(unsigned long addr, int numpages)
 {
 	return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_RW));
 }
+EXPORT_SYMBOL_GPL(set_memory_ro);
 
 int set_memory_rw(unsigned long addr, int numpages)
 {
 	return change_page_attr_set(addr, numpages, __pgprot(_PAGE_RW));
 }
+EXPORT_SYMBOL_GPL(set_memory_rw);
 
 int set_memory_np(unsigned long addr, int numpages)
 {

arch/x86/mm/pgtable.c

@@ -63,10 +63,8 @@ static inline void pgd_list_del(pgd_t *pgd)
 #define UNSHARED_PTRS_PER_PGD				\
 	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
 
-static void pgd_ctor(void *p)
+static void pgd_ctor(pgd_t *pgd)
 {
-	pgd_t *pgd = p;
-
 	/* If the pgd points to a shared pagetable level (either the
 	   ptes in non-PAE, or shared PMD in PAE), then just copy the
 	   references from swapper_pg_dir. */
@@ -87,7 +85,7 @@ static void pgd_ctor(void *p)
 		pgd_list_add(pgd);
 }
 
-static void pgd_dtor(void *pgd)
+static void pgd_dtor(pgd_t *pgd)
 {
 	unsigned long flags; /* can be called from interrupt context */
 

arch/x86/mm/pgtable_32.c

@@ -123,7 +123,8 @@ static int __init parse_vmalloc(char *arg)
 	if (!arg)
 		return -EINVAL;
 
-	__VMALLOC_RESERVE = memparse(arg, &arg);
+	/* Add VMALLOC_OFFSET to the parsed value due to vm area guard hole*/
+	__VMALLOC_RESERVE = memparse(arg, &arg) + VMALLOC_OFFSET;
 	return 0;
 }
 early_param("vmalloc", parse_vmalloc);

arch/x86/oprofile/op_model_p4.c

@@ -10,11 +10,12 @@
 
 #include <linux/oprofile.h>
 #include <linux/smp.h>
+#include <linux/ptrace.h>
+#include <linux/nmi.h>
 #include <asm/msr.h>
-#include <asm/ptrace.h>
 #include <asm/fixmap.h>
 #include <asm/apic.h>
-#include <asm/nmi.h>
+
 
 #include "op_x86_model.h"
 #include "op_counter.h"
@@ -40,7 +41,7 @@ static unsigned int num_controls = NUM_CONTROLS_NON_HT;
 static inline void setup_num_counters(void)
 {
 #ifdef CONFIG_SMP
-	if (smp_num_siblings == 2){
+	if (smp_num_siblings == 2) {
 		num_counters = NUM_COUNTERS_HT2;
 		num_controls = NUM_CONTROLS_HT2;
 	}
@@ -86,7 +87,7 @@ struct p4_event_binding {
 #define CTR_FLAME_2    (1 << 6)
 #define CTR_IQ_5       (1 << 7)
 
-static struct p4_counter_binding p4_counters [NUM_COUNTERS_NON_HT] = {
+static struct p4_counter_binding p4_counters[NUM_COUNTERS_NON_HT] = {
 	{ CTR_BPU_0,   MSR_P4_BPU_PERFCTR0,   MSR_P4_BPU_CCCR0 },
 	{ CTR_MS_0,    MSR_P4_MS_PERFCTR0,    MSR_P4_MS_CCCR0 },
 	{ CTR_FLAME_0, MSR_P4_FLAME_PERFCTR0, MSR_P4_FLAME_CCCR0 },
@@ -97,32 +98,32 @@ static struct p4_counter_binding p4_counters [NUM_COUNTERS_NON_HT] = {
 	{ CTR_IQ_5,    MSR_P4_IQ_PERFCTR5,    MSR_P4_IQ_CCCR5 }
 };
 
-#define NUM_UNUSED_CCCRS	NUM_CCCRS_NON_HT - NUM_COUNTERS_NON_HT
+#define NUM_UNUSED_CCCRS (NUM_CCCRS_NON_HT - NUM_COUNTERS_NON_HT)
 
 /* p4 event codes in libop/op_event.h are indices into this table. */
 
 static struct p4_event_binding p4_events[NUM_EVENTS] = {
-	
+
 	{ /* BRANCH_RETIRED */
-		0x05, 0x06, 
+		0x05, 0x06,
 		{ {CTR_IQ_4, MSR_P4_CRU_ESCR2},
 		  {CTR_IQ_5, MSR_P4_CRU_ESCR3} }
 	},
-	
+
 	{ /* MISPRED_BRANCH_RETIRED */
-		0x04, 0x03, 
+		0x04, 0x03,
 		{ { CTR_IQ_4, MSR_P4_CRU_ESCR0},
 		  { CTR_IQ_5, MSR_P4_CRU_ESCR1} }
 	},
-	
+
 	{ /* TC_DELIVER_MODE */
 		0x01, 0x01,
-		{ { CTR_MS_0, MSR_P4_TC_ESCR0},  
+		{ { CTR_MS_0, MSR_P4_TC_ESCR0},
 		  { CTR_MS_2, MSR_P4_TC_ESCR1} }
 	},
-	
+
 	{ /* BPU_FETCH_REQUEST */
-		0x00, 0x03, 
+		0x00, 0x03,
 		{ { CTR_BPU_0, MSR_P4_BPU_ESCR0},
 		  { CTR_BPU_2, MSR_P4_BPU_ESCR1} }
 	},
@@ -146,7 +147,7 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 	},
 
 	{ /* LOAD_PORT_REPLAY */
-		0x02, 0x04, 
+		0x02, 0x04,
 		{ { CTR_FLAME_0, MSR_P4_SAAT_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_SAAT_ESCR1} }
 	},
@@ -170,43 +171,43 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 	},
 
 	{ /* BSQ_CACHE_REFERENCE */
-		0x07, 0x0c, 
+		0x07, 0x0c,
 		{ { CTR_BPU_0, MSR_P4_BSU_ESCR0},
 		  { CTR_BPU_2, MSR_P4_BSU_ESCR1} }
 	},
 
 	{ /* IOQ_ALLOCATION */
-		0x06, 0x03, 
+		0x06, 0x03,
 		{ { CTR_BPU_0, MSR_P4_FSB_ESCR0},
 		  { 0, 0 } }
 	},
 
 	{ /* IOQ_ACTIVE_ENTRIES */
-		0x06, 0x1a, 
+		0x06, 0x1a,
 		{ { CTR_BPU_2, MSR_P4_FSB_ESCR1},
 		  { 0, 0 } }
 	},
 
 	{ /* FSB_DATA_ACTIVITY */
-		0x06, 0x17, 
+		0x06, 0x17,
 		{ { CTR_BPU_0, MSR_P4_FSB_ESCR0},
 		  { CTR_BPU_2, MSR_P4_FSB_ESCR1} }
 	},
 
 	{ /* BSQ_ALLOCATION */
-		0x07, 0x05, 
+		0x07, 0x05,
 		{ { CTR_BPU_0, MSR_P4_BSU_ESCR0},
 		  { 0, 0 } }
 	},
 
 	{ /* BSQ_ACTIVE_ENTRIES */
 		0x07, 0x06,
-		{ { CTR_BPU_2, MSR_P4_BSU_ESCR1 /* guess */},  
+		{ { CTR_BPU_2, MSR_P4_BSU_ESCR1 /* guess */},
 		  { 0, 0 } }
 	},
 
 	{ /* X87_ASSIST */
-		0x05, 0x03, 
+		0x05, 0x03,
 		{ { CTR_IQ_4, MSR_P4_CRU_ESCR2},
 		  { CTR_IQ_5, MSR_P4_CRU_ESCR3} }
 	},
@@ -216,21 +217,21 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
-  
+
 	{ /* PACKED_SP_UOP */
-		0x01, 0x08, 
+		0x01, 0x08,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
-  
+
 	{ /* PACKED_DP_UOP */
-		0x01, 0x0c, 
+		0x01, 0x0c,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
 
 	{ /* SCALAR_SP_UOP */
-		0x01, 0x0a, 
+		0x01, 0x0a,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
@@ -242,31 +243,31 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 	},
 
 	{ /* 64BIT_MMX_UOP */
-		0x01, 0x02, 
+		0x01, 0x02,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
-  
+
 	{ /* 128BIT_MMX_UOP */
-		0x01, 0x1a, 
+		0x01, 0x1a,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
 
 	{ /* X87_FP_UOP */
-		0x01, 0x04, 
+		0x01, 0x04,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
-  
+
 	{ /* X87_SIMD_MOVES_UOP */
-		0x01, 0x2e, 
+		0x01, 0x2e,
 		{ { CTR_FLAME_0, MSR_P4_FIRM_ESCR0},
 		  { CTR_FLAME_2, MSR_P4_FIRM_ESCR1} }
 	},
-  
+
 	{ /* MACHINE_CLEAR */
-		0x05, 0x02, 
+		0x05, 0x02,
 		{ { CTR_IQ_4, MSR_P4_CRU_ESCR2},
 		  { CTR_IQ_5, MSR_P4_CRU_ESCR3} }
 	},
@@ -276,9 +277,9 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 		{ { CTR_BPU_0, MSR_P4_FSB_ESCR0},
 		  { CTR_BPU_2, MSR_P4_FSB_ESCR1} }
 	},
-  
+
 	{ /* TC_MS_XFER */
-		0x00, 0x05, 
+		0x00, 0x05,
 		{ { CTR_MS_0, MSR_P4_MS_ESCR0},
 		  { CTR_MS_2, MSR_P4_MS_ESCR1} }
 	},
@@ -308,7 +309,7 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 	},
 
 	{ /* INSTR_RETIRED */
-		0x04, 0x02, 
+		0x04, 0x02,
 		{ { CTR_IQ_4, MSR_P4_CRU_ESCR0},
 		  { CTR_IQ_5, MSR_P4_CRU_ESCR1} }
 	},
@@ -319,14 +320,14 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 		  { CTR_IQ_5, MSR_P4_CRU_ESCR1} }
 	},
 
-	{ /* UOP_TYPE */    
-		0x02, 0x02, 
+	{ /* UOP_TYPE */
+		0x02, 0x02,
 		{ { CTR_IQ_4, MSR_P4_RAT_ESCR0},
 		  { CTR_IQ_5, MSR_P4_RAT_ESCR1} }
 	},
 
 	{ /* RETIRED_MISPRED_BRANCH_TYPE */
-		0x02, 0x05, 
+		0x02, 0x05,
 		{ { CTR_MS_0, MSR_P4_TBPU_ESCR0},
 		  { CTR_MS_2, MSR_P4_TBPU_ESCR1} }
 	},
@@ -349,8 +350,8 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 #define ESCR_SET_OS_1(escr, os) ((escr) |= (((os) & 1) << 1))
 #define ESCR_SET_EVENT_SELECT(escr, sel) ((escr) |= (((sel) & 0x3f) << 25))
 #define ESCR_SET_EVENT_MASK(escr, mask) ((escr) |= (((mask) & 0xffff) << 9))
-#define ESCR_READ(escr,high,ev,i) do {rdmsr(ev->bindings[(i)].escr_address, (escr), (high));} while (0)
-#define ESCR_WRITE(escr,high,ev,i) do {wrmsr(ev->bindings[(i)].escr_address, (escr), (high));} while (0)
+#define ESCR_READ(escr, high, ev, i) do {rdmsr(ev->bindings[(i)].escr_address, (escr), (high)); } while (0)
+#define ESCR_WRITE(escr, high, ev, i) do {wrmsr(ev->bindings[(i)].escr_address, (escr), (high)); } while (0)
 
 #define CCCR_RESERVED_BITS 0x38030FFF
 #define CCCR_CLEAR(cccr) ((cccr) &= CCCR_RESERVED_BITS)
@@ -360,15 +361,15 @@ static struct p4_event_binding p4_events[NUM_EVENTS] = {
 #define CCCR_SET_PMI_OVF_1(cccr) ((cccr) |= (1<<27))
 #define CCCR_SET_ENABLE(cccr) ((cccr) |= (1<<12))
 #define CCCR_SET_DISABLE(cccr) ((cccr) &= ~(1<<12))
-#define CCCR_READ(low, high, i) do {rdmsr(p4_counters[(i)].cccr_address, (low), (high));} while (0)
-#define CCCR_WRITE(low, high, i) do {wrmsr(p4_counters[(i)].cccr_address, (low), (high));} while (0)
+#define CCCR_READ(low, high, i) do {rdmsr(p4_counters[(i)].cccr_address, (low), (high)); } while (0)
+#define CCCR_WRITE(low, high, i) do {wrmsr(p4_counters[(i)].cccr_address, (low), (high)); } while (0)
 #define CCCR_OVF_P(cccr) ((cccr) & (1U<<31))
 #define CCCR_CLEAR_OVF(cccr) ((cccr) &= (~(1U<<31)))
 
-#define CTRL_IS_RESERVED(msrs,c) (msrs->controls[(c)].addr ? 1 : 0)
-#define CTR_IS_RESERVED(msrs,c) (msrs->counters[(c)].addr ? 1 : 0)
-#define CTR_READ(l,h,i) do {rdmsr(p4_counters[(i)].counter_address, (l), (h));} while (0)
-#define CTR_WRITE(l,i) do {wrmsr(p4_counters[(i)].counter_address, -(u32)(l), -1);} while (0)
+#define CTRL_IS_RESERVED(msrs, c) (msrs->controls[(c)].addr ? 1 : 0)
+#define CTR_IS_RESERVED(msrs, c) (msrs->counters[(c)].addr ? 1 : 0)
+#define CTR_READ(l, h, i) do {rdmsr(p4_counters[(i)].counter_address, (l), (h)); } while (0)
+#define CTR_WRITE(l, i) do {wrmsr(p4_counters[(i)].counter_address, -(u32)(l), -1); } while (0)
 #define CTR_OVERFLOW_P(ctr) (!((ctr) & 0x80000000))
 
 
@@ -380,7 +381,7 @@ static unsigned int get_stagger(void)
 #ifdef CONFIG_SMP
 	int cpu = smp_processor_id();
 	return (cpu != first_cpu(per_cpu(cpu_sibling_map, cpu)));
-#endif	
+#endif
 	return 0;
 }
 
@@ -395,25 +396,23 @@ static unsigned long reset_value[NUM_COUNTERS_NON_HT];
 
 static void p4_fill_in_addresses(struct op_msrs * const msrs)
 {
-	unsigned int i; 
+	unsigned int i;
 	unsigned int addr, cccraddr, stag;
 
 	setup_num_counters();
 	stag = get_stagger();
 
 	/* initialize some registers */
-	for (i = 0; i < num_counters; ++i) {
+	for (i = 0; i < num_counters; ++i)
 		msrs->counters[i].addr = 0;
-	}
-	for (i = 0; i < num_controls; ++i) {
+	for (i = 0; i < num_controls; ++i)
 		msrs->controls[i].addr = 0;
-	}
-	
+
 	/* the counter & cccr registers we pay attention to */
 	for (i = 0; i < num_counters; ++i) {
 		addr = p4_counters[VIRT_CTR(stag, i)].counter_address;
 		cccraddr = p4_counters[VIRT_CTR(stag, i)].cccr_address;
-		if (reserve_perfctr_nmi(addr)){
+		if (reserve_perfctr_nmi(addr)) {
 			msrs->counters[i].addr = addr;
 			msrs->controls[i].addr = cccraddr;
 		}
@@ -447,22 +446,22 @@ static void p4_fill_in_addresses(struct op_msrs * const msrs)
 		if (reserve_evntsel_nmi(addr))
 			msrs->controls[i].addr = addr;
 	}
-	
+
 	for (addr = MSR_P4_MS_ESCR0 + stag;
-	     addr <= MSR_P4_TC_ESCR1; ++i, addr += addr_increment()) { 
+	     addr <= MSR_P4_TC_ESCR1; ++i, addr += addr_increment()) {
 		if (reserve_evntsel_nmi(addr))
 			msrs->controls[i].addr = addr;
 	}
-	
+
 	for (addr = MSR_P4_IX_ESCR0 + stag;
-	     addr <= MSR_P4_CRU_ESCR3; ++i, addr += addr_increment()) { 
+	     addr <= MSR_P4_CRU_ESCR3; ++i, addr += addr_increment()) {
 		if (reserve_evntsel_nmi(addr))
 			msrs->controls[i].addr = addr;
 	}
 
 	/* there are 2 remaining non-contiguously located ESCRs */
 
-	if (num_counters == NUM_COUNTERS_NON_HT) {		
+	if (num_counters == NUM_COUNTERS_NON_HT) {
 		/* standard non-HT CPUs handle both remaining ESCRs*/
 		if (reserve_evntsel_nmi(MSR_P4_CRU_ESCR5))
 			msrs->controls[i++].addr = MSR_P4_CRU_ESCR5;
@@ -498,20 +497,20 @@ static void pmc_setup_one_p4_counter(unsigned int ctr)
 	unsigned int stag;
 
 	stag = get_stagger();
-	
+
 	/* convert from counter *number* to counter *bit* */
 	counter_bit = 1 << VIRT_CTR(stag, ctr);
-	
+
 	/* find our event binding structure. */
 	if (counter_config[ctr].event <= 0 || counter_config[ctr].event > NUM_EVENTS) {
-		printk(KERN_ERR 
-		       "oprofile: P4 event code 0x%lx out of range\n", 
+		printk(KERN_ERR
+		       "oprofile: P4 event code 0x%lx out of range\n",
 		       counter_config[ctr].event);
 		return;
 	}
-	
+
 	ev = &(p4_events[counter_config[ctr].event - 1]);
-	
+
 	for (i = 0; i < maxbind; i++) {
 		if (ev->bindings[i].virt_counter & counter_bit) {
 
@@ -526,25 +525,24 @@ static void pmc_setup_one_p4_counter(unsigned int ctr)
 				ESCR_SET_OS_1(escr, counter_config[ctr].kernel);
 			}
 			ESCR_SET_EVENT_SELECT(escr, ev->event_select);
-			ESCR_SET_EVENT_MASK(escr, counter_config[ctr].unit_mask);			
+			ESCR_SET_EVENT_MASK(escr, counter_config[ctr].unit_mask);
 			ESCR_WRITE(escr, high, ev, i);
-		       
+
 			/* modify CCCR */
 			CCCR_READ(cccr, high, VIRT_CTR(stag, ctr));
 			CCCR_CLEAR(cccr);
 			CCCR_SET_REQUIRED_BITS(cccr);
 			CCCR_SET_ESCR_SELECT(cccr, ev->escr_select);
-			if (stag == 0) {
+			if (stag == 0)
 				CCCR_SET_PMI_OVF_0(cccr);
-			} else {
+			else
 				CCCR_SET_PMI_OVF_1(cccr);
-			}
 			CCCR_WRITE(cccr, high, VIRT_CTR(stag, ctr));
 			return;
 		}
 	}
 
-	printk(KERN_ERR 
+	printk(KERN_ERR
 	       "oprofile: P4 event code 0x%lx no binding, stag %d ctr %d\n",
 	       counter_config[ctr].event, stag, ctr);
 }
@@ -559,14 +557,14 @@ static void p4_setup_ctrs(struct op_msrs const * const msrs)
 	stag = get_stagger();
 
 	rdmsr(MSR_IA32_MISC_ENABLE, low, high);
-	if (! MISC_PMC_ENABLED_P(low)) {
+	if (!MISC_PMC_ENABLED_P(low)) {
 		printk(KERN_ERR "oprofile: P4 PMC not available\n");
 		return;
 	}
 
 	/* clear the cccrs we will use */
 	for (i = 0 ; i < num_counters ; i++) {
-		if (unlikely(!CTRL_IS_RESERVED(msrs,i)))
+		if (unlikely(!CTRL_IS_RESERVED(msrs, i)))
 			continue;
 		rdmsr(p4_counters[VIRT_CTR(stag, i)].cccr_address, low, high);
 		CCCR_CLEAR(low);
@@ -576,14 +574,14 @@ static void p4_setup_ctrs(struct op_msrs const * const msrs)
 
 	/* clear all escrs (including those outside our concern) */
 	for (i = num_counters; i < num_controls; i++) {
-		if (unlikely(!CTRL_IS_RESERVED(msrs,i)))
+		if (unlikely(!CTRL_IS_RESERVED(msrs, i)))
 			continue;
 		wrmsr(msrs->controls[i].addr, 0, 0);
 	}
 
 	/* setup all counters */
 	for (i = 0 ; i < num_counters ; ++i) {
-		if ((counter_config[i].enabled) && (CTRL_IS_RESERVED(msrs,i))) {
+		if ((counter_config[i].enabled) && (CTRL_IS_RESERVED(msrs, i))) {
 			reset_value[i] = counter_config[i].count;
 			pmc_setup_one_p4_counter(i);
 			CTR_WRITE(counter_config[i].count, VIRT_CTR(stag, i));
@@ -603,11 +601,11 @@ static int p4_check_ctrs(struct pt_regs * const regs,
 	stag = get_stagger();
 
 	for (i = 0; i < num_counters; ++i) {
-		
-		if (!reset_value[i]) 
+
+		if (!reset_value[i])
 			continue;
 
-		/* 
+		/*
 		 * there is some eccentricity in the hardware which
 		 * requires that we perform 2 extra corrections:
 		 *
@@ -616,24 +614,24 @@ static int p4_check_ctrs(struct pt_regs * const regs,
 		 *
 		 * - write the counter back twice to ensure it gets
 		 *   updated properly.
-		 * 
+		 *
 		 * the former seems to be related to extra NMIs happening
 		 * during the current NMI; the latter is reported as errata
 		 * N15 in intel doc 249199-029, pentium 4 specification
 		 * update, though their suggested work-around does not
 		 * appear to solve the problem.
 		 */
-		
+
 		real = VIRT_CTR(stag, i);
 
 		CCCR_READ(low, high, real);
- 		CTR_READ(ctr, high, real);
+		CTR_READ(ctr, high, real);
 		if (CCCR_OVF_P(low) || CTR_OVERFLOW_P(ctr)) {
 			oprofile_add_sample(regs, i);
- 			CTR_WRITE(reset_value[i], real);
+			CTR_WRITE(reset_value[i], real);
 			CCCR_CLEAR_OVF(low);
 			CCCR_WRITE(low, high, real);
- 			CTR_WRITE(reset_value[i], real);
+			CTR_WRITE(reset_value[i], real);
 		}
 	}
 
@@ -683,15 +681,16 @@ static void p4_shutdown(struct op_msrs const * const msrs)
 	int i;
 
 	for (i = 0 ; i < num_counters ; ++i) {
-		if (CTR_IS_RESERVED(msrs,i))
+		if (CTR_IS_RESERVED(msrs, i))
 			release_perfctr_nmi(msrs->counters[i].addr);
 	}
-	/* some of the control registers are specially reserved in
+	/*
+	 * some of the control registers are specially reserved in
 	 * conjunction with the counter registers (hence the starting offset).
 	 * This saves a few bits.
 	 */
 	for (i = num_counters ; i < num_controls ; ++i) {
-		if (CTRL_IS_RESERVED(msrs,i))
+		if (CTRL_IS_RESERVED(msrs, i))
 			release_evntsel_nmi(msrs->controls[i].addr);
 	}
 }

arch/x86/pci/amd_bus.c

@@ -580,7 +580,7 @@ static int __cpuinit amd_cpu_notify(struct notifier_block *self,
 				    unsigned long action, void *hcpu)
 {
 	int cpu = (long)hcpu;
-	switch(action) {
+	switch (action) {
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		smp_call_function_single(cpu, enable_pci_io_ecs, NULL, 0);

arch/x86/pci/irq.c

@@ -1043,35 +1043,44 @@ static void __init pcibios_fixup_irqs(void)
 		if (io_apic_assign_pci_irqs) {
 			int irq;
 
-			if (pin) {
-				/*
-				 * interrupt pins are numbered starting
-				 * from 1
-				 */
-				pin--;
-				irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
-					PCI_SLOT(dev->devfn), pin);
-	/*
-	 * Busses behind bridges are typically not listed in the MP-table.
-	 * In this case we have to look up the IRQ based on the parent bus,
-	 * parent slot, and pin number. The SMP code detects such bridged
-	 * busses itself so we should get into this branch reliably.
-	 */
-				if (irq < 0 && dev->bus->parent) { /* go back to the bridge */
-					struct pci_dev *bridge = dev->bus->self;
-
-					pin = (pin + PCI_SLOT(dev->devfn)) % 4;
-					irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
-							PCI_SLOT(bridge->devfn), pin);
-					if (irq >= 0)
-						dev_warn(&dev->dev, "using bridge %s INT %c to get IRQ %d\n",
-							 pci_name(bridge),
-							 'A' + pin, irq);
-				}
-				if (irq >= 0) {
-					dev_info(&dev->dev, "PCI->APIC IRQ transform: INT %c -> IRQ %d\n", 'A' + pin, irq);
-					dev->irq = irq;
-				}
+			if (!pin)
+				continue;
+
+			/*
+			 * interrupt pins are numbered starting from 1
+			 */
+			pin--;
+			irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
+				PCI_SLOT(dev->devfn), pin);
+			/*
+			 * Busses behind bridges are typically not listed in the
+			 * MP-table.  In this case we have to look up the IRQ
+			 * based on the parent bus, parent slot, and pin number.
+			 * The SMP code detects such bridged busses itself so we
+			 * should get into this branch reliably.
+			 */
+			if (irq < 0 && dev->bus->parent) {
+				/* go back to the bridge */
+				struct pci_dev *bridge = dev->bus->self;
+				int bus;
+
+				pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+				bus = bridge->bus->number;
+				irq = IO_APIC_get_PCI_irq_vector(bus,
+						PCI_SLOT(bridge->devfn), pin);
+				if (irq >= 0)
+					dev_warn(&dev->dev,
+						"using bridge %s INT %c to "
+							"get IRQ %d\n",
+						 pci_name(bridge),
+						 'A' + pin, irq);
+			}
+			if (irq >= 0) {
+				dev_info(&dev->dev,
+					"PCI->APIC IRQ transform: INT %c "
+						"-> IRQ %d\n",
+					'A' + pin, irq);
+				dev->irq = irq;
 			}
 		}
 #endif

arch/x86/power/hibernate_asm_32.S

@@ -1,5 +1,3 @@
-.text
-
 /*
  * This may not use any stack, nor any variable that is not "NoSave":
  *
@@ -12,17 +10,18 @@
 #include <asm/segment.h>
 #include <asm/page.h>
 #include <asm/asm-offsets.h>
+#include <asm/processor-flags.h>
 
-	.text
+.text
 
 ENTRY(swsusp_arch_suspend)
-
 	movl %esp, saved_context_esp
 	movl %ebx, saved_context_ebx
 	movl %ebp, saved_context_ebp
 	movl %esi, saved_context_esi
 	movl %edi, saved_context_edi
-	pushfl ; popl saved_context_eflags
+	pushfl
+	popl saved_context_eflags
 
 	call swsusp_save
 	ret
@@ -59,7 +58,7 @@ done:
 	movl	mmu_cr4_features, %ecx
 	jecxz	1f	# cr4 Pentium and higher, skip if zero
 	movl	%ecx, %edx
-	andl	$~(1<<7), %edx;  # PGE
+	andl	$~(X86_CR4_PGE), %edx
 	movl	%edx, %cr4;  # turn off PGE
 1:
 	movl	%cr3, %eax;  # flush TLB
@@ -74,7 +73,8 @@ done:
 	movl saved_context_esi, %esi
 	movl saved_context_edi, %edi
 
-	pushl saved_context_eflags ; popfl
+	pushl saved_context_eflags
+	popfl
 
 	xorl	%eax, %eax
 

arch/x86/xen/enlighten.c

@@ -812,7 +812,7 @@ static int xen_write_msr_safe(unsigned int msr, unsigned low, unsigned high)
 
 /* Early in boot, while setting up the initial pagetable, assume
    everything is pinned. */
-static __init void xen_alloc_pte_init(struct mm_struct *mm, u32 pfn)
+static __init void xen_alloc_pte_init(struct mm_struct *mm, unsigned long pfn)
 {
 #ifdef CONFIG_FLATMEM
 	BUG_ON(mem_map);	/* should only be used early */
@@ -822,7 +822,7 @@ static __init void xen_alloc_pte_init(struct mm_struct *mm, u32 pfn)
 
 /* Early release_pte assumes that all pts are pinned, since there's
    only init_mm and anything attached to that is pinned. */
-static void xen_release_pte_init(u32 pfn)
+static void xen_release_pte_init(unsigned long pfn)
 {
 	make_lowmem_page_readwrite(__va(PFN_PHYS(pfn)));
 }
@@ -838,7 +838,7 @@ static void pin_pagetable_pfn(unsigned cmd, unsigned long pfn)
 
 /* This needs to make sure the new pte page is pinned iff its being
    attached to a pinned pagetable. */
-static void xen_alloc_ptpage(struct mm_struct *mm, u32 pfn, unsigned level)
+static void xen_alloc_ptpage(struct mm_struct *mm, unsigned long pfn, unsigned level)
 {
 	struct page *page = pfn_to_page(pfn);
 
@@ -856,12 +856,12 @@ static void xen_alloc_ptpage(struct mm_struct *mm, u32 pfn, unsigned level)
 	}
 }
 
-static void xen_alloc_pte(struct mm_struct *mm, u32 pfn)
+static void xen_alloc_pte(struct mm_struct *mm, unsigned long pfn)
 {
 	xen_alloc_ptpage(mm, pfn, PT_PTE);
 }
 
-static void xen_alloc_pmd(struct mm_struct *mm, u32 pfn)
+static void xen_alloc_pmd(struct mm_struct *mm, unsigned long pfn)
 {
 	xen_alloc_ptpage(mm, pfn, PT_PMD);
 }
@@ -909,7 +909,7 @@ static void xen_pgd_free(struct mm_struct *mm, pgd_t *pgd)
 }
 
 /* This should never happen until we're OK to use struct page */
-static void xen_release_ptpage(u32 pfn, unsigned level)
+static void xen_release_ptpage(unsigned long pfn, unsigned level)
 {
 	struct page *page = pfn_to_page(pfn);
 
@@ -923,23 +923,23 @@ static void xen_release_ptpage(u32 pfn, unsigned level)
 	}
 }
 
-static void xen_release_pte(u32 pfn)
+static void xen_release_pte(unsigned long pfn)
 {
 	xen_release_ptpage(pfn, PT_PTE);
 }
 
-static void xen_release_pmd(u32 pfn)
+static void xen_release_pmd(unsigned long pfn)
 {
 	xen_release_ptpage(pfn, PT_PMD);
 }
 
 #if PAGETABLE_LEVELS == 4
-static void xen_alloc_pud(struct mm_struct *mm, u32 pfn)
+static void xen_alloc_pud(struct mm_struct *mm, unsigned long pfn)
 {
 	xen_alloc_ptpage(mm, pfn, PT_PUD);
 }
 
-static void xen_release_pud(u32 pfn)
+static void xen_release_pud(unsigned long pfn)
 {
 	xen_release_ptpage(pfn, PT_PUD);
 }

include/asm-x86/a.out-core.h

@@ -9,8 +9,8 @@
  * 2 of the Licence, or (at your option) any later version.
  */
 
-#ifndef _ASM_A_OUT_CORE_H
-#define _ASM_A_OUT_CORE_H
+#ifndef ASM_X86__A_OUT_CORE_H
+#define ASM_X86__A_OUT_CORE_H
 
 #ifdef __KERNEL__
 #ifdef CONFIG_X86_32
@@ -70,4 +70,4 @@ static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
 
 #endif /* CONFIG_X86_32 */
 #endif /* __KERNEL__ */
-#endif /* _ASM_A_OUT_CORE_H */
+#endif /* ASM_X86__A_OUT_CORE_H */

include/asm-x86/a.out.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_A_OUT_H
-#define _ASM_X86_A_OUT_H
+#ifndef ASM_X86__A_OUT_H
+#define ASM_X86__A_OUT_H
 
 struct exec
 {
@@ -17,4 +17,4 @@ struct exec
 #define N_DRSIZE(a)	((a).a_drsize)
 #define N_SYMSIZE(a)	((a).a_syms)
 
-#endif /* _ASM_X86_A_OUT_H */
+#endif /* ASM_X86__A_OUT_H */

include/asm-x86/acpi.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_ACPI_H
-#define _ASM_X86_ACPI_H
+#ifndef ASM_X86__ACPI_H
+#define ASM_X86__ACPI_H
 
 /*
  *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
@@ -175,4 +175,4 @@ static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
 
 #define acpi_unlazy_tlb(x)	leave_mm(x)
 
-#endif /*__X86_ASM_ACPI_H*/
+#endif /* ASM_X86__ACPI_H */

include/asm-x86/agp.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_AGP_H
-#define _ASM_X86_AGP_H
+#ifndef ASM_X86__AGP_H
+#define ASM_X86__AGP_H
 
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
@@ -32,4 +32,4 @@
 #define free_gatt_pages(table, order)	\
 	free_pages((unsigned long)(table), (order))
 
-#endif
+#endif /* ASM_X86__AGP_H */

include/asm-x86/alternative.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_ALTERNATIVE_H
-#define _ASM_X86_ALTERNATIVE_H
+#ifndef ASM_X86__ALTERNATIVE_H
+#define ASM_X86__ALTERNATIVE_H
 
 #include <linux/types.h>
 #include <linux/stddef.h>
@@ -180,4 +180,4 @@ extern void add_nops(void *insns, unsigned int len);
 extern void *text_poke(void *addr, const void *opcode, size_t len);
 extern void *text_poke_early(void *addr, const void *opcode, size_t len);
 
-#endif /* _ASM_X86_ALTERNATIVE_H */
+#endif /* ASM_X86__ALTERNATIVE_H */

include/asm-x86/amd_iommu.h

@@ -17,8 +17,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#ifndef _ASM_X86_AMD_IOMMU_H
-#define _ASM_X86_AMD_IOMMU_H
+#ifndef ASM_X86__AMD_IOMMU_H
+#define ASM_X86__AMD_IOMMU_H
 
 #ifdef CONFIG_AMD_IOMMU
 extern int amd_iommu_init(void);
@@ -29,4 +29,4 @@ static inline int amd_iommu_init(void) { return -ENODEV; }
 static inline void amd_iommu_detect(void) { }
 #endif
 
-#endif
+#endif /* ASM_X86__AMD_IOMMU_H */

include/asm-x86/amd_iommu_types.h

@@ -17,8 +17,8 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#ifndef __AMD_IOMMU_TYPES_H__
-#define __AMD_IOMMU_TYPES_H__
+#ifndef ASM_X86__AMD_IOMMU_TYPES_H
+#define ASM_X86__AMD_IOMMU_TYPES_H
 
 #include <linux/types.h>
 #include <linux/list.h>
@@ -341,4 +341,4 @@ static inline u16 calc_devid(u8 bus, u8 devfn)
 	return (((u16)bus) << 8) | devfn;
 }
 
-#endif
+#endif /* ASM_X86__AMD_IOMMU_TYPES_H */

include/asm-x86/apic.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_APIC_H
-#define _ASM_X86_APIC_H
+#ifndef ASM_X86__APIC_H
+#define ASM_X86__APIC_H
 
 #include <linux/pm.h>
 #include <linux/delay.h>
@@ -54,6 +54,11 @@ extern int disable_apic;
 #endif
 
 extern int is_vsmp_box(void);
+extern void xapic_wait_icr_idle(void);
+extern u32 safe_xapic_wait_icr_idle(void);
+extern u64 xapic_icr_read(void);
+extern void xapic_icr_write(u32, u32);
+extern int setup_profiling_timer(unsigned int);
 
 static inline void native_apic_write(unsigned long reg, u32 v)
 {
@@ -76,9 +81,7 @@ extern int get_physical_broadcast(void);
 static inline void ack_APIC_irq(void)
 {
 	/*
-	 * ack_APIC_irq() actually gets compiled as a single instruction:
-	 * - a single rmw on Pentium/82489DX
-	 * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC)
+	 * ack_APIC_irq() actually gets compiled as a single instruction
 	 * ... yummie.
 	 */
 
@@ -128,4 +131,4 @@ static inline void init_apic_mappings(void) { }
 
 #endif /* !CONFIG_X86_LOCAL_APIC */
 
-#endif /* __ASM_APIC_H */
+#endif /* ASM_X86__APIC_H */

include/asm-x86/apicdef.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_APICDEF_H
-#define _ASM_X86_APICDEF_H
+#ifndef ASM_X86__APICDEF_H
+#define ASM_X86__APICDEF_H
 
 /*
  * Constants for various Intel APICs. (local APIC, IOAPIC, etc.)
@@ -411,4 +411,4 @@ struct local_apic {
 #else
  #define BAD_APICID 0xFFFFu
 #endif
-#endif
+#endif /* ASM_X86__APICDEF_H */

include/asm-x86/arch_hooks.h

@@ -1,5 +1,5 @@
-#ifndef _ASM_ARCH_HOOKS_H
-#define _ASM_ARCH_HOOKS_H
+#ifndef ASM_X86__ARCH_HOOKS_H
+#define ASM_X86__ARCH_HOOKS_H
 
 #include <linux/interrupt.h>
 
@@ -25,4 +25,4 @@ extern void pre_time_init_hook(void);
 extern void time_init_hook(void);
 extern void mca_nmi_hook(void);
 
-#endif
+#endif /* ASM_X86__ARCH_HOOKS_H */