x86, kexec: fix kexec x86 coding style

Impact: Cleanup

Fix some coding style issue for kexec x86.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/kernel/machine_kexec_32.c

@@ -14,12 +14,12 @@
 #include <linux/ftrace.h>
 #include <linux/suspend.h>
 #include <linux/gfp.h>
+#include <linux/io.h>
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
-#include <asm/io.h>
 #include <asm/apic.h>
 #include <asm/cpufeature.h>
 #include <asm/desc.h>
@@ -63,7 +63,7 @@ static void load_segments(void)
 		"\tmovl %%eax,%%fs\n"
 		"\tmovl %%eax,%%gs\n"
 		"\tmovl %%eax,%%ss\n"
-		::: "eax", "memory");
+		: : : "eax", "memory");
 #undef STR
 #undef __STR
 }
@@ -205,7 +205,8 @@ void machine_kexec(struct kimage *image)
 
 	if (image->preserve_context) {
 #ifdef CONFIG_X86_IO_APIC
-		/* We need to put APICs in legacy mode so that we can
+		/*
+		 * We need to put APICs in legacy mode so that we can
 		 * get timer interrupts in second kernel. kexec/kdump
 		 * paths already have calls to disable_IO_APIC() in
 		 * one form or other. kexec jump path also need
@@ -227,7 +228,8 @@ void machine_kexec(struct kimage *image)
 		page_list[PA_SWAP_PAGE] = (page_to_pfn(image->swap_page)
 						<< PAGE_SHIFT);
 
-	/* The segment registers are funny things, they have both a
+	/*
+	 * The segment registers are funny things, they have both a
 	 * visible and an invisible part.  Whenever the visible part is
 	 * set to a specific selector, the invisible part is loaded
 	 * with from a table in memory.  At no other time is the
@@ -237,11 +239,12 @@ void machine_kexec(struct kimage *image)
 	 * segments, before I zap the gdt with an invalid value.
 	 */
 	load_segments();
-	/* The gdt & idt are now invalid.
+	/*
+	 * The gdt & idt are now invalid.
 	 * If you want to load them you must set up your own idt & gdt.
 	 */
-	set_gdt(phys_to_virt(0),0);
-	set_idt(phys_to_virt(0),0);
+	set_gdt(phys_to_virt(0), 0);
+	set_idt(phys_to_virt(0), 0);
 
 	/* now call it */
 	image->start = relocate_kernel_ptr((unsigned long)image->head,

arch/x86/kernel/machine_kexec_64.c

@@ -12,11 +12,11 @@
 #include <linux/reboot.h>
 #include <linux/numa.h>
 #include <linux/ftrace.h>
+#include <linux/io.h>
 
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
-#include <asm/io.h>
 
 static void init_level2_page(pmd_t *level2p, unsigned long addr)
 {
@@ -83,9 +83,8 @@ static int init_level4_page(struct kimage *image, pgd_t *level4p,
 		}
 		level3p = (pud_t *)page_address(page);
 		result = init_level3_page(image, level3p, addr, last_addr);
-		if (result) {
+		if (result)
 			goto out;
-		}
 		set_pgd(level4p++, __pgd(__pa(level3p) | _KERNPG_TABLE));
 		addr += PGDIR_SIZE;
 	}
@@ -242,7 +241,8 @@ void machine_kexec(struct kimage *image)
 	page_list[PA_TABLE_PAGE] =
 	  (unsigned long)__pa(page_address(image->control_code_page));
 
-	/* The segment registers are funny things, they have both a
+	/*
+	 * The segment registers are funny things, they have both a
 	 * visible and an invisible part.  Whenever the visible part is
 	 * set to a specific selector, the invisible part is loaded
 	 * with from a table in memory.  At no other time is the
@@ -252,11 +252,12 @@ void machine_kexec(struct kimage *image)
 	 * segments, before I zap the gdt with an invalid value.
 	 */
 	load_segments();
-	/* The gdt & idt are now invalid.
+	/*
+	 * The gdt & idt are now invalid.
 	 * If you want to load them you must set up your own idt & gdt.
 	 */
-	set_gdt(phys_to_virt(0),0);
-	set_idt(phys_to_virt(0),0);
+	set_gdt(phys_to_virt(0), 0);
+	set_idt(phys_to_virt(0), 0);
 
 	/* now call it */
 	relocate_kernel((unsigned long)image->head, (unsigned long)page_list,

arch/x86/kernel/relocate_kernel_32.S

@@ -17,7 +17,8 @@
 
 #define PTR(x) (x << 2)
 
-/* control_page + KEXEC_CONTROL_CODE_MAX_SIZE
+/*
+ * control_page + KEXEC_CONTROL_CODE_MAX_SIZE
  * ~ control_page + PAGE_SIZE are used as data storage and stack for
  * jumping back
  */
@@ -76,8 +77,10 @@ relocate_kernel:
 	movl	%eax, CP_PA_SWAP_PAGE(%edi)
 	movl	%ebx, CP_PA_BACKUP_PAGES_MAP(%edi)
 
-	/* get physical address of control page now */
-	/* this is impossible after page table switch */
+	/*
+	 * get physical address of control page now
+	 * this is impossible after page table switch
+	 */
 	movl	PTR(PA_CONTROL_PAGE)(%ebp), %edi
 
 	/* switch to new set of page tables */
@@ -97,7 +100,8 @@ identity_mapped:
 	/* store the start address on the stack */
 	pushl   %edx
 
-	/* Set cr0 to a known state:
+	/*
+	 * Set cr0 to a known state:
 	 *  - Paging disabled
 	 *  - Alignment check disabled
 	 *  - Write protect disabled
@@ -113,7 +117,8 @@ identity_mapped:
 	/* clear cr4 if applicable */
 	testl	%ecx, %ecx
 	jz	1f
-	/* Set cr4 to a known state:
+	/*
+	 * Set cr4 to a known state:
 	 * Setting everything to zero seems safe.
 	 */
 	xorl	%eax, %eax
@@ -132,15 +137,18 @@ identity_mapped:
 	call	swap_pages
 	addl	$8, %esp
 
-	/* To be certain of avoiding problems with self-modifying code
+	/*
+	 * To be certain of avoiding problems with self-modifying code
 	 * I need to execute a serializing instruction here.
 	 * So I flush the TLB, it's handy, and not processor dependent.
 	 */
 	xorl	%eax, %eax
 	movl	%eax, %cr3
 
-	/* set all of the registers to known values */
-	/* leave %esp alone */
+	/*
+	 * set all of the registers to known values
+	 * leave %esp alone
+	 */
 
 	testl	%esi, %esi
 	jnz 1f

arch/x86/kernel/relocate_kernel_64.S

@@ -24,7 +24,8 @@
 	.code64
 	.globl relocate_kernel
 relocate_kernel:
-	/* %rdi indirection_page
+	/*
+	 * %rdi indirection_page
 	 * %rsi page_list
 	 * %rdx start address
 	 */
@@ -33,8 +34,10 @@ relocate_kernel:
 	pushq $0
 	popfq
 
-	/* get physical address of control page now */
-	/* this is impossible after page table switch */
+	/*
+	 * get physical address of control page now
+	 * this is impossible after page table switch
+	 */
 	movq	PTR(PA_CONTROL_PAGE)(%rsi), %r8
 
 	/* get physical address of page table now too */
@@ -55,7 +58,8 @@ identity_mapped:
 	/* store the start address on the stack */
 	pushq   %rdx
 
-	/* Set cr0 to a known state:
+	/*
+	 * Set cr0 to a known state:
 	 *  - Paging enabled
 	 *  - Alignment check disabled
 	 *  - Write protect disabled
@@ -68,7 +72,8 @@ identity_mapped:
 	orl	$(X86_CR0_PG | X86_CR0_PE), %eax
 	movq	%rax, %cr0
 
-	/* Set cr4 to a known state:
+	/*
+	 * Set cr4 to a known state:
 	 *  - physical address extension enabled
 	 */
 	movq	$X86_CR4_PAE, %rax
@@ -117,7 +122,8 @@ identity_mapped:
 	jmp	0b
 3:
 
-	/* To be certain of avoiding problems with self-modifying code
+	/*
+	 * To be certain of avoiding problems with self-modifying code
 	 * I need to execute a serializing instruction here.
 	 * So I flush the TLB by reloading %cr3 here, it's handy,
 	 * and not processor dependent.
@@ -125,8 +131,10 @@ identity_mapped:
 	movq	%cr3, %rax
 	movq	%rax, %cr3
 
-	/* set all of the registers to known values */
-	/* leave %rsp alone */
+	/*
+	 * set all of the registers to known values
+	 * leave %rsp alone
+	 */
 
 	xorq	%rax, %rax
 	xorq	%rbx, %rbx