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>
git-mirror · Apr 17, 2008 · 8434e73 · 8434e73
1 parent 709f744
commit 8434e73
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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 */