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-rw-r--r--arch/i386/kernel/acpi/boot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 447fa9e33ff..2111529dea7 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -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;