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[PATCH] x86_64: Fix off by one in acpi table mapping

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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>
This commit is contained in:
Andi Kleen 2006-01-11 22:43:39 +01:00 committed by Linus Torvalds
parent 7180d4fb83
commit 7a4a76cc10
1 changed files with 1 additions and 1 deletions
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arch/i386/kernel/acpi/boot.c
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@ -108,7 +108,7 @@ char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
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;