From: Gleb Natapov <gleb@redhat.com>
Date: Mon, 15 Oct 2012 07:49:08 +0000 (+0200)
Subject: KVM: do not de-cache cr4 bits needlessly
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=471842ec49726bc589322e8498e6620b4d723c74;p=deliverable%2Flinux.git

KVM: do not de-cache cr4 bits needlessly

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 841d09b123db..6e5f069bee30 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -635,7 +635,7 @@ int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
 	}
 
 	if (is_long_mode(vcpu)) {
-		if (kvm_read_cr4(vcpu) & X86_CR4_PCIDE) {
+		if (kvm_read_cr4_bits(vcpu, X86_CR4_PCIDE)) {
 			if (cr3 & CR3_PCID_ENABLED_RESERVED_BITS)
 				return 1;
 		} else