From: "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com>
Date: Tue, 29 Jan 2019 08:09:46 +0000
Subject: svm: Fix improper check when deactivate AVIC
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Git-commit: c57cd3c89ecf2812976f53e494580a396f93efd2
Patch-mainline: v5.1-rc1
References: bsc#1130335
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>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
arch/x86/kvm/svm.c | 10 +++++-----
1 file 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)