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Message-Id: <20170628150411.15846-52-marc.zyngier@arm.com>
Date: Wed, 28 Jun 2017 16:04:10 +0100
From: Marc Zyngier <marc.zyngier@....com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
kvmarm@...ts.cs.columbia.edu
Cc: Christoffer Dall <christoffer.dall@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Jason Cooper <jason@...edaemon.net>,
Eric Auger <eric.auger@...hat.com>,
Shanker Donthineni <shankerd@...eaurora.org>,
Mark Rutland <mark.rutland@....com>
Subject: [PATCH v2 51/52] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint
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 <marc.zyngier@....com>
---
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 2106e4c06a12..9ab52108989d 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -785,6 +785,9 @@ 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
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