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| author | Junaid Shahid <junaids@google.com> | 2018-06-28 00:59:18 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 18:59:00 +0300 |
| commit | 956bf3531fba53c0501eda4fbc67950b0f7b913f (patch) | |
| tree | 37e602fdc99567f8e5a702dfdbca00d415327099 /arch/x86/kvm/vmx.c | |
| parent | 08fb59d8a47d5e1f9de08659603a47f117fe60d5 (diff) | |
| download | linux-956bf3531fba53c0501eda4fbc67950b0f7b913f.tar.xz | |
kvm: x86: Skip shadow page resync on CR3 switch when indicated by guest
When the guest indicates that the TLB doesn't need to be flushed in a
CR3 switch, we can also skip resyncing the shadow page tables since an
out-of-sync shadow page table is equivalent to an out-of-sync TLB.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6151418cec32..b81210051133 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -8821,7 +8821,7 @@ static int handle_invpcid(struct kvm_vcpu *vcpu) if (kvm_get_pcid(vcpu, vcpu->arch.mmu.prev_root.cr3) == operand.pcid) - kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); + kvm_mmu_free_roots(vcpu, KVM_MMU_ROOT_PREVIOUS); /* * If neither the current cr3 nor the prev_root.cr3 use the |