[PATCH] x86_64: Fix off by one in acpi table mapping
And fix the test to include the size
Noticed by Vivek Goyal
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 447fa9e..2111529 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -108,7 +108,7 @@
if (!phys_addr || !size)
return NULL;
- if (phys_addr < (end_pfn_map << PAGE_SHIFT))
+ if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
return __va(phys_addr);
return NULL;