[PATCH 1/3] KVM: VMX: Avoid duplicate ept tlb flush when setting cr3

From: Avi Kivity <avi@redhat.com>
To: kvm@vger.kernel.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
	Joerg Roedel <joerg.roedel@amd.com>,
	Sheng Yang <sheng@linux.intel.com>
Subject: [PATCH 1/3] KVM: VMX: Avoid duplicate ept tlb flush when setting cr3
Date: Mon,  1 Jun 2009 16:22:01 +0300	[thread overview]
Message-ID: <1243862524-22120-2-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1243862524-22120-1-git-send-email-avi@redhat.com>

vmx_set_cr3() will call vmx_tlb_flush(), which will flush the ept context.
So there is no need to call ept_sync_context() explicitly.

Signed-off-by: Avi Kivity <avi@redhat.com>
---
 arch/x86/kvm/vmx.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 25f1239..5607de8 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1642,7 +1642,6 @@ static void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
 	if (enable_ept) {
 		eptp = construct_eptp(cr3);
 		vmcs_write64(EPT_POINTER, eptp);
-		ept_sync_context(eptp);
 		ept_load_pdptrs(vcpu);
 		guest_cr3 = is_paging(vcpu) ? vcpu->arch.cr3 :
 			VMX_EPT_IDENTITY_PAGETABLE_ADDR;
-- 
1.6.0.6

