[SPARC64]: Move DCACHE_ALIASING_POSSIBLE define to asm/page.h

This showed that arch/sparc64/kernel/ptrace.c was not getting
the define properly, and thus the code protected by this ifdef
was never actually compiled before.  So fix that too.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/ptrace.c

@@ -30,6 +30,7 @@
 #include <asm/psrcompat.h>
 #include <asm/visasm.h>
 #include <asm/spitfire.h>
+#include <asm/page.h>
 
 /* Returning from ptrace is a bit tricky because the syscall return
  * low level code assumes any value returned which is negative and
@@ -128,20 +129,20 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 	 * is mapped to in the user's address space, we can skip the
 	 * D-cache flush.
 	 */
-	if ((uaddr ^ kaddr) & (1UL << 13)) {
+	if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) {
 		unsigned long start = __pa(kaddr);
 		unsigned long end = start + len;
 
 		if (tlb_type == spitfire) {
 			for (; start < end; start += 32)
-				spitfire_put_dcache_tag(va & 0x3fe0, 0x0);
+				spitfire_put_dcache_tag(start & 0x3fe0, 0x0);
 		} else {
 			for (; start < end; start += 32)
 				__asm__ __volatile__(
 					"stxa %%g0, [%0] %1\n\t"
 					"membar #Sync"
 					: /* no outputs */
-					: "r" (va),
+					: "r" (start),
 					"i" (ASI_DCACHE_INVALIDATE));
 		}
 	}

include/asm-sparc64/cacheflush.h

@@ -4,13 +4,6 @@
 #include <linux/config.h>
 #include <asm/page.h>
 
-/* Flushing for D-cache alias handling is only needed if
- * the page size is smaller than 16K.
- */
-#if PAGE_SHIFT < 14
-#define DCACHE_ALIASING_POSSIBLE
-#endif
-
 #ifndef __ASSEMBLY__
 
 #include <linux/mm.h>

include/asm-sparc64/ide.h

@@ -15,6 +15,7 @@
 #include <asm/io.h>
 #include <asm/spitfire.h>
 #include <asm/cacheflush.h>
+#include <asm/page.h>
 
 #ifndef MAX_HWIFS
 # ifdef CONFIG_BLK_DEV_IDEPCI

include/asm-sparc64/page.h

@@ -21,6 +21,13 @@
 #define PAGE_SIZE    (_AC(1,UL) << PAGE_SHIFT)
 #define PAGE_MASK    (~(PAGE_SIZE-1))
 
+/* Flushing for D-cache alias handling is only needed if
+ * the page size is smaller than 16K.
+ */
+#if PAGE_SHIFT < 14
+#define DCACHE_ALIASING_POSSIBLE
+#endif
+
 #ifdef __KERNEL__
 
 #ifndef __ASSEMBLY__

include/asm-sparc64/pgalloc.h

@@ -10,6 +10,7 @@
 #include <asm/spitfire.h>
 #include <asm/cpudata.h>
 #include <asm/cacheflush.h>
+#include <asm/page.h>
 
 /* Page table allocation/freeing. */
 #ifdef CONFIG_SMP