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| author | Junaid Shahid <junaids@google.com> | 2018-06-27 14:59:12 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:58:55 +0200 |
| commit | afe828d1de4047d26eb0cd0c0154f5ac3722bf63 (patch) | |
| tree | dde4847d96f41b66542bcf81c65b351d273a1f6f /arch/x86/kvm/mmu.c | |
| parent | 50c28f21d045dde8c52548f8482d456b3f0956f5 (diff) | |
| download | lwn-afe828d1de4047d26eb0cd0c0154f5ac3722bf63.tar.gz lwn-afe828d1de4047d26eb0cd0c0154f5ac3722bf63.zip | |
kvm: x86: Add ability to skip TLB flush when switching CR3
Remove the implicit flush from the set_cr3 handlers, so that the
callers are able to decide whether to flush the TLB or not.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 9b73cfcef917..d3a04cf6514b 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -4070,6 +4070,7 @@ static bool fast_cr3_switch(struct kvm_vcpu *vcpu, gpa_t new_cr3, kvm_make_request(KVM_REQ_LOAD_CR3, vcpu); kvm_make_request(KVM_REQ_MMU_SYNC, vcpu); + kvm_x86_ops->tlb_flush(vcpu, true); __clear_sp_write_flooding_count( page_header(mmu->root_hpa)); @@ -4851,6 +4852,7 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu) if (r) goto out; kvm_mmu_load_cr3(vcpu); + kvm_x86_ops->tlb_flush(vcpu, true); out: return r; } |