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authorSuthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com>2019-01-29 08:09:46 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2019-02-20 22:48:22 +0100
commitc57cd3c89ecf2812976f53e494580a396f93efd2 (patch)
tree9e02bbbdd97f4cc082e260ada9614b1ea431ad6c
parentf7589cca50ef8970dda56cdced8d96d05aa0a777 (diff)
downloadlinux-stericsson-c57cd3c89ecf2812976f53e494580a396f93efd2.tar.gz
svm: Fix improper check when deactivate AVIC
The function svm_refresh_apicv_exec_ctrl() always returning prematurely as kvm_vcpu_apicv_active() always return false when calling from the function arch/x86/kvm/x86.c:kvm_vcpu_deactivate_apicv(). This is because the apicv_active is set to false just before calling refresh_apicv_exec_ctrl(). Also, we need to mark VMCB_AVIC bit as dirty instead of VMCB_INTR. So, fix svm_refresh_apicv_exec_ctrl() to properly deactivate AVIC. Fixes: 67034bb9dd5e ('KVM: SVM: Add irqchip_split() checks before enabling AVIC') Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/svm.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 01b66bbcdd7a..74ceda470eae 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -5122,11 +5122,11 @@ static void svm_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
struct vmcb *vmcb = svm->vmcb;
- if (!kvm_vcpu_apicv_active(&svm->vcpu))
- return;
-
- vmcb->control.int_ctl &= ~AVIC_ENABLE_MASK;
- mark_dirty(vmcb, VMCB_INTR);
+ if (kvm_vcpu_apicv_active(vcpu))
+ vmcb->control.int_ctl |= AVIC_ENABLE_MASK;
+ else
+ vmcb->control.int_ctl &= ~AVIC_ENABLE_MASK;
+ mark_dirty(vmcb, VMCB_AVIC);
}
static void svm_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)