[PULL 23/59] KVM: arm/arm64: vgic-new: Implement kvm_vgic_vcpu_pending_irq

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From: Christoffer Dall <christoffer.dall@linaro.org>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>
Cc: kvm@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
	Andre Przywara <andre.przywara@arm.com>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: [PULL 23/59] KVM: arm/arm64: vgic-new: Implement kvm_vgic_vcpu_pending_irq
Date: Tue, 24 May 2016 11:09:17 +0200	[thread overview]
Message-ID: <1464080993-10884-24-git-send-email-christoffer.dall@linaro.org> (raw)
In-Reply-To: <1464080993-10884-1-git-send-email-christoffer.dall@linaro.org>

From: Eric Auger <eric.auger@linaro.org>

Tell KVM whether a particular VCPU has an IRQ that needs handling
in the guest. This is used to decide whether a VCPU is runnable.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
---
 include/kvm/vgic/vgic.h  |  2 ++
 virt/kvm/arm/vgic/vgic.c | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
index 9506267..f663288 100644
--- a/include/kvm/vgic/vgic.h
+++ b/include/kvm/vgic/vgic.h
@@ -184,6 +184,8 @@ struct vgic_cpu {
 int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
 			bool level);
 
+int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
+
 #define irqchip_in_kernel(k)	(!!((k)->arch.vgic.in_kernel))
 #define vgic_initialized(k)	(false)
 #define vgic_ready(k)		((k)->arch.vgic.ready)
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 0bf0d20..7e01008 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -520,3 +520,28 @@ void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu)
 	vgic_flush_lr_state(vcpu);
 	spin_unlock(&vcpu->arch.vgic_cpu.ap_list_lock);
 }
+
+int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
+{
+	struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+	struct vgic_irq *irq;
+	bool pending = false;
+
+	if (!vcpu->kvm->arch.vgic.enabled)
+		return false;
+
+	spin_lock(&vgic_cpu->ap_list_lock);
+
+	list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {
+		spin_lock(&irq->irq_lock);
+		pending = irq->pending && irq->enabled;
+		spin_unlock(&irq->irq_lock);
+
+		if (pending)
+			break;
+	}
+
+	spin_unlock(&vgic_cpu->ap_list_lock);
+
+	return pending;
+}
-- 
2.1.2.330.g565301e.dirty

WARNING: multiple messages have this Message-ID (diff)

From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PULL 23/59] KVM: arm/arm64: vgic-new: Implement kvm_vgic_vcpu_pending_irq
Date: Tue, 24 May 2016 11:09:17 +0200	[thread overview]
Message-ID: <1464080993-10884-24-git-send-email-christoffer.dall@linaro.org> (raw)
In-Reply-To: <1464080993-10884-1-git-send-email-christoffer.dall@linaro.org>

From: Eric Auger <eric.auger@linaro.org>

Tell KVM whether a particular VCPU has an IRQ that needs handling
in the guest. This is used to decide whether a VCPU is runnable.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
---
 include/kvm/vgic/vgic.h  |  2 ++
 virt/kvm/arm/vgic/vgic.c | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
index 9506267..f663288 100644
--- a/include/kvm/vgic/vgic.h
+++ b/include/kvm/vgic/vgic.h
@@ -184,6 +184,8 @@ struct vgic_cpu {
 int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
 			bool level);
 
+int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
+
 #define irqchip_in_kernel(k)	(!!((k)->arch.vgic.in_kernel))
 #define vgic_initialized(k)	(false)
 #define vgic_ready(k)		((k)->arch.vgic.ready)
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 0bf0d20..7e01008 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -520,3 +520,28 @@ void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu)
 	vgic_flush_lr_state(vcpu);
 	spin_unlock(&vcpu->arch.vgic_cpu.ap_list_lock);
 }
+
+int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
+{
+	struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
+	struct vgic_irq *irq;
+	bool pending = false;
+
+	if (!vcpu->kvm->arch.vgic.enabled)
+		return false;
+
+	spin_lock(&vgic_cpu->ap_list_lock);
+
+	list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {
+		spin_lock(&irq->irq_lock);
+		pending = irq->pending && irq->enabled;
+		spin_unlock(&irq->irq_lock);
+
+		if (pending)
+			break;
+	}
+
+	spin_unlock(&vgic_cpu->ap_list_lock);
+
+	return pending;
+}
-- 
2.1.2.330.g565301e.dirty

next prev parent reply	other threads:[~2016-05-24  9:09 UTC|newest]

Thread overview: 121+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-24  9:08 [PULL 00/59] KVM/ARM Changes for v4.7 take 2 Christoffer Dall
2016-05-24  9:08 ` Christoffer Dall
2016-05-24  9:08 ` [PULL 01/59] kvm: arm64: Fix EC field in inject_abt64 Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:08 ` [PULL 02/59] KVM: arm/arm64: vgic: streamline vgic_update_irq_pending() interface Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:08 ` [PULL 03/59] KVM: arm/arm64: vgic: avoid map in kvm_vgic_inject_mapped_irq() Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:08 ` [PULL 04/59] KVM: arm/arm64: vgic: avoid map in kvm_vgic_map_is_active() Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:08 ` [PULL 05/59] KVM: arm/arm64: vgic: avoid map in kvm_vgic_unmap_phys_irq() Christoffer Dall
2016-05-24  9:08   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 06/59] KVM: arm/arm64: Remove the IRQ field from struct irq_phys_map Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 07/59] KVM: arm/arm64: arch_timer: Remove irq_phys_map Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 08/59] KVM: arm/arm64: vgic: Remove irq_phys_map from interface Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 09/59] KVM: arm/arm64: Move timer IRQ map to latest possible time Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 10/59] KVM: arm/arm64: Get rid of vgic_cpu->nr_lr Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 11/59] KVM: arm/arm64: Fix MMIO emulation data handling Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 12/59] KVM: arm/arm64: Export mmio_read/write_bus Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 13/59] KVM: arm/arm64: pmu: abstract access to number of SPIs Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 14/59] KVM: arm/arm64: Provide functionality to pause and resume a guest Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 15/59] KVM: arm/arm64: move GICv2 emulation defines into arm-gic-v3.h Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 16/59] KVM: arm/arm64: vgic-new: Add data structure definitions Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 17/59] KVM: arm/arm64: vgic-new: Add acccessor to new struct vgic_irq instance Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 18/59] KVM: arm/arm64: vgic-new: Implement virtual IRQ injection Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 19/59] KVM: arm/arm64: vgic-new: Add IRQ sorting Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 20/59] KVM: arm/arm64: vgic-new: Add IRQ sync/flush framework Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 21/59] KVM: arm/arm64: vgic-new: Add GICv2 world switch backend Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 22/59] KVM: arm/arm64: vgic-new: Add GICv3 " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` Christoffer Dall [this message]
2016-05-24  9:09   ` [PULL 23/59] KVM: arm/arm64: vgic-new: Implement kvm_vgic_vcpu_pending_irq Christoffer Dall
2016-05-24  9:09 ` [PULL 24/59] KVM: arm/arm64: vgic-new: Add MMIO handling framework Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 25/59] KVM: arm/arm64: vgic-new: Add GICv2 " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 26/59] KVM: arm/arm64: vgic-new: Add CTLR, TYPER and IIDR handlers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 27/59] KVM: arm/arm64: vgic-new: Add ENABLE registers handlers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 28/59] KVM: arm/arm64: vgic-new: Add PENDING " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 29/59] KVM: arm/arm64: vgic-new: Add ACTIVE " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 30/59] KVM: arm/arm64: vgic-new: Add PRIORITY " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 31/59] KVM: arm/arm64: vgic-new: Add CONFIG " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 32/59] KVM: arm/arm64: vgic-new: Add TARGET " Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 33/59] KVM: arm/arm64: vgic-new: Add SGIR register handler Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 34/59] KVM: arm/arm64: vgic-new: Add SGIPENDR register handlers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 35/59] KVM: arm/arm64: vgic-new: Add GICv3 MMIO handling framework Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 36/59] KVM: arm/arm64: vgic-new: Add GICv3 CTLR, IIDR, TYPER handlers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 37/59] KVM: arm/arm64: vgic-new: Add GICv3 redistributor IIDR and TYPER handler Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 38/59] KVM: arm/arm64: vgic-new: Add GICv3 IDREGS register handler Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 39/59] KVM: arm/arm64: vgic-new: Add GICv3 IROUTER register handlers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 40/59] KVM: arm/arm64: vgic-new: Add GICv3 SGI system register trap handler Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 41/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM device ops registration Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 42/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_NR_IRQS Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 43/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_CTRL Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 44/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: implement kvm_vgic_addr Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 45/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM_DEV_ARM_VGIC_GRP_ADDR Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 46/59] KVM: arm/arm64: vgic-new: vgic_kvm_device: access to VGIC registers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 47/59] KVM: arm/arm64: vgic-new: Export register access interface Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 48/59] KVM: arm/arm64: vgic-new: Add userland access to VGIC dist registers Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 49/59] KVM: arm/arm64: vgic-new: Add GICH_VMCR accessors Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 50/59] KVM: arm/arm64: vgic-new: Add userland GIC CPU interface access Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 51/59] KVM: arm/arm64: vgic-new: vgic_init: implement kvm_vgic_hyp_init Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 52/59] KVM: arm/arm64: vgic-new: vgic_init: implement vgic_create Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 53/59] KVM: arm/arm64: vgic-new: vgic_init: implement vgic_init Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 54/59] KVM: arm/arm64: vgic-new: vgic_init: implement map_resources Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 55/59] KVM: arm/arm64: vgic-new: Add vgic_v2/v3_enable Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 56/59] KVM: arm/arm64: vgic-new: Wire up irqfd injection Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 57/59] KVM: arm/arm64: vgic-new: implement mapped IRQ handling Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 58/59] KVM: arm/arm64: vgic-new: enable build Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall
2016-05-24  9:09 ` [PULL 59/59] KVM: arm/arm64: vgic-new: Synchronize changes to active state Christoffer Dall
2016-05-24  9:09   ` Christoffer Dall

find likely ancestor, descendant, or conflicting patches for this message:
dfblob:9506267 dfblob:0bf0d20 dfblob:9506267 dfblob:0bf0d20
dfblob:f663288 dfblob:7e01008 dfblob:f663288 dfblob:7e01008
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