kvm: x86: Avoid taking MMU lock in kvm_mmu_sync_roots if no sync is needed

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kvm_mmu_sync_roots() can locklessly check whether a sync is needed and just
bail out if it isn't.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Junaid Shahid 2018-06-27 14:59:05 -07:00 • committed by Paolo Bonzini

parent 5ce4786f75

commit 578e1c4db2

1 changed files with 67 additions and 8 deletions

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arch/x86/kvm/mmu.c

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