From: Gleb Natapov <gleb@redhat.com>
Date: Thu, 27 Aug 2009 12:07:30 +0000 (+0300)
Subject: KVM: VMX: call vmx_load_host_state() only if msr is cached
X-Git-Tag: v2.6.32-rc1~693^2~6
X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=542423b0dd162a9dbf91109461703bd0e545c71f

KVM: VMX: call vmx_load_host_state() only if msr is cached

No need to call it before each kvm_(set|get)_msr_common()

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f482100..cc6e00a 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1007,9 +1007,9 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
 		data = vmcs_readl(GUEST_SYSENTER_ESP);
 		break;
 	default:
-		vmx_load_host_state(to_vmx(vcpu));
 		msr = find_msr_entry(to_vmx(vcpu), msr_index);
 		if (msr) {
+			vmx_load_host_state(to_vmx(vcpu));
 			data = msr->data;
 			break;
 		}
@@ -1066,9 +1066,9 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
 		}
 		/* Otherwise falls through to kvm_set_msr_common */
 	default:
-		vmx_load_host_state(vmx);
 		msr = find_msr_entry(vmx, msr_index);
 		if (msr) {
+			vmx_load_host_state(vmx);
 			msr->data = data;
 			break;
 		}