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authorThomas Gleixner <tglx@linutronix.de>2008-01-30 13:34:06 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:34:06 +0100
commit950f9d95bed1a366434d3597ea75f5b9d772d74f (patch)
tree900c548d99c14aacc31888a3483545f8352aea22 /include
parent5f5192b9feeff6a96c97c143c3ca558fdbe2dc8e (diff)
x86: fix the missing BIOS area check in page_is_ram
page_is_ram has a FIXME since ages, which reminds to sanity check the BIOS area between 640k and 1M, which is sometimes falsely reported as RAM in the e820 tables. Implement the sanity check. Move the BIOS range defines from pageattr.c into e820.h to avoid duplicate defines. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/e820.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index f96f1853bc4..7004251fc66 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -25,6 +25,9 @@ struct e820map {
#define ISA_START_ADDRESS 0xa0000
#define ISA_END_ADDRESS 0x100000
+#define BIOS_BEGIN 0x000a0000
+#define BIOS_END 0x00100000
+
#ifdef __KERNEL__
#ifdef CONFIG_X86_32
# include "e820_32.h"