x86: increase max physical memory size of 64-bit

Increase the maximum physical address size of x86_64 system
to 44-bits. This is in preparation for future chips that
support larger physical memory sizes.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/asm-x86/sparsemem.h b/include/asm-x86/sparsemem.h
index fa58cd55411a5386045d704860510369cd802389..fa684f353aa7e4cd590d40225037e344308ab4d8 100644 (file)
--- a/include/asm-x86/sparsemem.h
+++ b/include/asm-x86/sparsemem.h
@@ -26,8 +26,8 @@
 # endif
 #else /* CONFIG_X86_32 */
 # define SECTION_SIZE_BITS     27 /* matt - 128 is convenient right now */
-# define MAX_PHYSADDR_BITS     40
-# define MAX_PHYSMEM_BITS      40
+# define MAX_PHYSADDR_BITS     44
+# define MAX_PHYSMEM_BITS      44
 #endif
 
 #endif /* CONFIG_SPARSEMEM */