x86: Always flush pages in change_page_attr

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Fix a bug introduced with the CLFLUSH changes: we must always flush pages
changed in cpa(), not just when they are reverted.

Reenable CLFLUSH usage with that now (it was temporarily disabled
for .22)

Add some BUG_ONs

Contains fixes from  Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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This commit is contained in:

Andi Kleen 2007-07-21 17:09:51 +02:00 • committed by Linus Torvalds

parent ad38658967

commit 65d2f0bc65

2 changed files with 31 additions and 12 deletions

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20

arch/i386/mm/pageattr.c

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23

arch/x86_64/mm/pageattr.c

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