From: Davidlohr Bueso <dave@xxxxxxx>
With EPT enabled it is not required to explicitly run invvpid to invalidate tagged TLB entries, as
KVM does not force vm-exits for cr3 writes and invlpg. Run invvpid only when these instructions
are emulated and shadow pages are used.
Signed-off-by: Davidlohr Bueso <dave@xxxxxxx>
---
arch/x86/kvm/vmx.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 2c22fc7..51c7fb9 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2861,12 +2861,13 @@ static void exit_lmode(struct kvm_vcpu *vcpu)
static void vmx_flush_tlb(struct kvm_vcpu *vcpu)
{
- vpid_sync_context(to_vmx(vcpu));
if (enable_ept) {
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
return;
ept_sync_context(construct_eptp(vcpu->arch.mmu.root_hpa));
}
+ else
+ vpid_sync_context(to_vmx(vcpu));
}
static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu)
--
1.7.4.1
--
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