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Commit 3564990a authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
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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: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent d4c9ff2d

arch/x86/kvm/svm.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -591,6 +591,7 @@ static void init_vmcb(struct vcpu_svm *svm) 
	if (npt_enabled) {

	if (npt_enabled) {

		/* Setup VMCB for Nested Paging */

		/* Setup VMCB for Nested Paging */

		control->nested_ctl = 1;

		control->nested_ctl = 1;

		control->intercept &= ~(1ULL << INTERCEPT_TASK_SWITCH);

		control->intercept_exceptions &= ~(1 << PF_VECTOR);

		control->intercept_exceptions &= ~(1 << PF_VECTOR);

		control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK|

		control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK|

						INTERCEPT_CR3_MASK);

						INTERCEPT_CR3_MASK);