x86: clflush_page_range needs mfence

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clflush is an unordered operation with respect to other memory
traffic, including other CLFLUSH instructions. This needs proper
fencing with mfence.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Thomas Gleixner 2008-01-30 13:34:08 +01:00 • committed by Ingo Molnar

parent af1e6844d6

commit cd8ddf1a28

1 changed files with 12 additions and 0 deletions

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arch/x86/mm/pageattr.c

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