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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
  [x86 setup] Correct the SMAP check for INT 0x15, AX=0xe820
This commit is contained in:
Linus Torvalds 2007-09-28 11:24:20 -07:00
parent cdfef17d93 4ee5b10abe
commit ae000eec2c
1 changed files with 6 additions and 3 deletions
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9
arch/i386/boot/memory.c
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@ -28,11 +28,14 @@ static int detect_memory_e820(void)
do {
size = sizeof(struct e820entry);
id = SMAP;
/* Important: %edx is clobbered by some BIOSes,
so it must be either used for the error output
or explicitly marked clobbered. */
asm("int $0x15; setc %0"
: "=am" (err), "+b" (next), "+d" (id), "+c" (size),
: "=d" (err), "+b" (next), "=a" (id), "+c" (size),
"=m" (*desc)
: "D" (desc), "a" (0xe820));
: "D" (desc), "d" (SMAP), "a" (0xe820));
/* Some BIOSes stop returning SMAP in the middle of
the search loop. We don't know exactly how the BIOS