[PATCH V2 07/10] KVM: X86: Zap the invalid list after remote tlb flushing

Lai Jiangshan
2021-09-18T00:57:24Z

In mmu_sync_children(), it can zap the invalid list after remote tlb flushing.
Emptifying the invalid list ASAP might help reduce a remote tlb flushing
in some cases.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
---
arch/x86/kvm/mmu/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 2f3f47dc96b0..ff52e8354148 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -2032,7 +2032,7 @@ static int mmu_sync_children(struct kvm_vcpu *vcpu,
protected |= rmap_write_protect(vcpu, sp->gfn);

if (protected) {
- kvm_flush_remote_tlbs(vcpu->kvm);
+ kvm_mmu_remote_flush_or_zap(vcpu->kvm, &invalid_list, true);
flush = false;
}

--
2.19.1.6.gb485710b