From 3564990af1b9f77a63692c1079e9c41af229f066 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 9 Apr 2008 16:04:32 +0200 Subject: [PATCH] KVM: SVM: do not intercept task switch with NPT When KVM uses NPT there is no reason to intercept task switches. This patch removes the intercept for it in that case. Signed-off-by: Joerg Roedel Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index da3ddef47605..8d04aed72f3a 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -591,6 +591,7 @@ static void init_vmcb(struct vcpu_svm *svm) if (npt_enabled) { /* Setup VMCB for Nested Paging */ control->nested_ctl = 1; + control->intercept &= ~(1ULL << INTERCEPT_TASK_SWITCH); control->intercept_exceptions &= ~(1 << PF_VECTOR); control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK| INTERCEPT_CR3_MASK);