Messages in this thread Patch in this message | | | Date | Tue, 08 Jun 2010 20:07:01 +0800 | From | Xiao Guangrong <> | Subject | [PATCH 3/3] KVM: MMU: delay local tlb flush |
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delay local tlb flush until enter guest moden, it can reduce vpid flush frequency and reduce remote tlb flush IPI(if KVM_REQ_TLB_FLUSH bit is already set, IPI is not sent)
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> --- arch/x86/kvm/mmu.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 7319098..75ddaa1 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2362,7 +2362,7 @@ static int nonpaging_init_context(struct kvm_vcpu *vcpu) void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu) { ++vcpu->stat.tlb_flush; - kvm_x86_ops->tlb_flush(vcpu); + set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests); } static void paging_new_cr3(struct kvm_vcpu *vcpu) -- 1.6.1.2
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