linux-kernel - [PATCH 2/3] KVM: SVM: set IRR in svm_deliver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 11 Feb 2022 06:01:16 -0500
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     mlevitsk@...hat.com
Subject: [PATCH 2/3] KVM: SVM: set IRR in svm_deliver_interrupt

SVM has to set IRR for both the AVIC and the software-LAPIC case,
so pull it up to the common function that handles both configurations.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/svm/avic.c | 2 --
 arch/x86/kvm/svm/svm.c  | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c
index 4d1baf5c8f6a..1e1890721634 100644
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -670,8 +670,6 @@ int svm_deliver_avic_intr(struct kvm_vcpu *vcpu, int vec)
 	if (!vcpu->arch.apicv_active)
 		return -1;
 
-	kvm_lapic_set_irr(vec, vcpu->arch.apic);
-
 	/*
 	 * Pairs with the smp_mb_*() after setting vcpu->guest_mode in
 	 * vcpu_enter_guest() to ensure the write to the vIRR is ordered before
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 52e4130110f3..cd769ff8af16 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3304,8 +3304,8 @@ static void svm_deliver_interrupt(struct kvm_lapic *apic, int delivery_mode,
 {
 	struct kvm_vcpu *vcpu = apic->vcpu;
 
+	kvm_lapic_set_irr(vector, apic);
 	if (svm_deliver_avic_intr(vcpu, vector)) {
-		kvm_lapic_set_irr(vector, apic);
 		kvm_make_request(KVM_REQ_EVENT, vcpu);
 		kvm_vcpu_kick(vcpu);
 	} else {
-- 
2.31.1