KVM: MMU: Avoid unnecessary remote tlb flushes when guest updates a pte

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If all we're doing is increasing permissions on a pte (typical for demand
paging), then there's not need to flush remote tlbs.  Worst case they'll
get a spurious page fault.

Signed-off-by: Avi Kivity <avi@qumranet.com>

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Avi Kivity 2007-11-21 02:06:21 +02:00

parent 0f74a24c59

commit 79539cec0c

1 changed files with 26 additions and 1 deletions

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drivers/kvm/mmu.c

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