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| author | Junaid Shahid <junaids@google.com> | 2018-06-27 14:59:15 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:58:58 +0200 |
| commit | ade61e2824443a208bb3aaafd8b345ce878298cd (patch) | |
| tree | aae386f7ee3a83188f0d7e5b971763970019d490 /arch/x86/include/asm | |
| parent | eb4b248e152d3ecf189b9d32c04961360dbd938a (diff) | |
| download | linux-ade61e2824443a208bb3aaafd8b345ce878298cd.tar.gz linux-ade61e2824443a208bb3aaafd8b345ce878298cd.tar.bz2 linux-ade61e2824443a208bb3aaafd8b345ce878298cd.zip | |
kvm: x86: Skip TLB flush on fast CR3 switch when indicated by guest
When PCIDs are enabled, the MSb of the source operand for a MOV-to-CR3
instruction indicates that the TLB doesn't need to be flushed.
This change enables this optimization for MOV-to-CR3s in the guest
that have been intercepted by KVM for shadow paging and are handled
within the fast CR3 switch path.
Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 1c253f15f9cd..8b4aa5e7ff92 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1318,7 +1318,7 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u64 error_code, void *insn, int insn_len); void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid); -void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3); +void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3, bool skip_tlb_flush); void kvm_enable_tdp(void); void kvm_disable_tdp(void); |