diff options
| author | Junaid Shahid <junaids@google.com> | 2018-06-29 13:10:05 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:59:01 +0200 |
| commit | faff87588d8bfd9e56e9203412f0bb80455da7b9 (patch) | |
| tree | 740ebc1243b63b7b2aafb9c058480395f35f2a41 /arch/x86/kvm/svm.c | |
| parent | 956bf3531fba53c0501eda4fbc67950b0f7b913f (diff) | |
| download | lwn-faff87588d8bfd9e56e9203412f0bb80455da7b9.tar.gz lwn-faff87588d8bfd9e56e9203412f0bb80455da7b9.zip | |
kvm: x86: Flush only affected TLB entries in kvm_mmu_invlpg*
This needs a minor bug fix. The updated patch is as follows.
Thanks,
Junaid
------------------------------------------------------------------------------
kvm_mmu_invlpg() and kvm_mmu_invpcid_gva() only need to flush the TLB
entries for the specific guest virtual address, instead of flushing all
TLB entries associated with the VM.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index be9931cad409..73e27a98456f 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -5434,6 +5434,13 @@ static void svm_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa) svm->asid_generation--; } +static void svm_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t gva) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + invlpga(gva, svm->vmcb->control.asid); +} + static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu) { } @@ -7086,6 +7093,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = { .set_rflags = svm_set_rflags, .tlb_flush = svm_flush_tlb, + .tlb_flush_gva = svm_flush_tlb_gva, .run = svm_vcpu_run, .handle_exit = handle_exit, |