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[PATCH] i386: cleanup serialize msr

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i386 arch cleanup.  Introduce the serialize macro to serialize processor
state.  Why the microcode update needs it I am not quite sure, since wrmsr()
is already a serializing instruction, but it is a microcode update, so I will
keep the semantic the same, since this could be a timing workaround.  As far
as I can tell, this has always been there since the original microcode update
source.

Signed-off-by: Zachary Amsden <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Zachary Amsden 2005-09-03 15:56:37 -07:00 • committed by Linus Torvalds
commit 245067d167
3 changed files with 15 additions and 2 deletions
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5
include/asm-i386/processor.h
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@ -277,6 +277,11 @@ static inline void clear_in_cr4 (unsigned long mask)
outb((data), 0x23); \
} while (0)
static inline void serialize_cpu(void)
{
__asm__ __volatile__ ("cpuid" : : : "ax", "bx", "cx", "dx");
}
static inline void __monitor(const void *eax, unsigned long ecx,
unsigned long edx)
{