From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH v3 50/59] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint Date: Mon, 31 Jul 2017 18:26:28 +0100 Message-ID: <20170731172637.29355-51-marc.zyngier@arm.com> References: <20170731172637.29355-1-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Jason Cooper , Thomas Gleixner To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: In-Reply-To: <20170731172637.29355-1-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org When a vPE exits, the pending_last flag is set when there are pending VLPIs stored in the pending table. Similarily, we set this flag when a doorbell interrupt fires, as it indicates the same condition. Let's update kvm_vgic_vcpu_pending_irq() to account for that flag as well, making a vcpu runnable when set. Signed-off-by: Marc Zyngier --- virt/kvm/arm/vgic/vgic.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c index a96e566905d2..dfac894f6f03 100644 --- a/virt/kvm/arm/vgic/vgic.c +++ b/virt/kvm/arm/vgic/vgic.c @@ -781,6 +781,9 @@ int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu) if (!vcpu->kvm->arch.vgic.enabled) return false; + if (vcpu->arch.vgic_cpu.vgic_v3.its_vpe.pending_last) + return true; + spin_lock(&vgic_cpu->ap_list_lock); list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) { -- 2.11.0