From ade61e2824443a208bb3aaafd8b345ce878298cd Mon Sep 17 00:00:00 2001 From: Junaid Shahid Date: Wed, 27 Jun 2018 14:59:15 -0700 Subject: 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 Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/kvm_host.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/include') 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); -- cgit v1.2.3