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[PATCH v3 39/59] KVM: arm/arm64: GICv4: Add property field and per-VM predicate

From Marc Zyngier <marc.zyngier@arm.com>
Newsgroups linux.kernel
Subject [PATCH v3 39/59] KVM: arm/arm64: GICv4: Add property field and per-VM predicate
Date 2017-07-31 19:30 +0200
Message-ID <u9mFZ-DO-45@gated-at.bofh.it> (permalink)
References <u9mFX-DO-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Add a new has_gicv4 field in the global VGIC state that indicates
whether the HW is GICv4 capable, as a per-VM predicate indicating
if there is a possibility for a VM to support direct injection
(the above being true and the VM having an ITS).

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 include/kvm/arm_vgic.h           | 3 +++
 virt/kvm/arm/vgic/vgic-mmio-v3.c | 5 +++++
 virt/kvm/arm/vgic/vgic.h         | 2 ++
 3 files changed, 10 insertions(+)

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index ee8587c8c715..84694b42373a 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -73,6 +73,9 @@ struct vgic_global {
 	/* Only needed for the legacy KVM_CREATE_IRQCHIP */
 	bool			can_emulate_gicv2;
 
+	/* Does have GICv4? */
+	bool			has_gicv4;
+
 	/* GIC system register CPU interface */
 	struct static_key_false gicv3_cpuif;
 
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 714fa3933546..74109ca75cc0 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -54,6 +54,11 @@ bool vgic_has_its(struct kvm *kvm)
 	return dist->has_its;
 }
 
+bool vgic_is_v4_capable(struct kvm *kvm)
+{
+	return kvm_vgic_global_state.has_gicv4 && vgic_has_its(kvm);
+}
+
 static unsigned long vgic_mmio_read_v3_misc(struct kvm_vcpu *vcpu,
 					    gpa_t addr, unsigned int len)
 {
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index 3002b72d938b..90f6436a11aa 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -229,4 +229,6 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
 			 u32 devid, u32 eventid, struct vgic_irq **irq);
 struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
 
+bool vgic_is_v4_capable(struct kvm *kvm);
+
 #endif
-- 
2.11.0

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[PATCH v3 00/59] irqchip: KVM: Add support for GICv4 Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 10/59] irqchip/gic-v3-its: Split out pending table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 37/59] KVM: arm/arm64: vgic: Move kvm_vgic_destroy call around Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 12/59] irqchip/gic-v3-its: Generalize device table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 55/59] KVM: arm/arm64: GICv4: Enable VLPI support Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 14/59] irqchip/gic-v4: Add management structure definitions Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 54/59] KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 45/59] KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 49/59] KVM: arm/arm64: GICv4: Propagate VLPI properties at map time Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 59/59] irqchip/gic-v3-its: Workaround Huawei D05 redistributor addressing Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 47/59] KVM: arm/arm64: GICv4: Propagate property updates to VLPIs Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 05/59] irqchip/gic-v3-its: Add probing for VLPI properties Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 29/59] irqchip/gic-v3-its: Set implementation defined bit to enable VLPIs Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 33/59] irqchip/gic-v4: Add some basic documentation Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 35/59] irqchip/gic-v3: Advertise GICv4 support to KVM Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 41/59] KVM: arm/arm64: GICv4: Wire mapping/unmapping of VLPIs in VFIO irq bypass Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 58/59] irqchip/gic-v3-its: Pass its_node pointer to each command bulder Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 39/59] KVM: arm/arm64: GICv4: Add property field and per-VM predicate Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 43/59] KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 31/59] irqchip/gic-v4: Add VPE command interface Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 24/59] irqchip/gic-v3-its: Add VPE invalidation hook Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 19/59] irqchip/gic-v3-its: Add VPE domain infrastructure Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 40/59] KVM: arm/arm64: GICv4: Add init/teardown of the per-VM vPE irq domain Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:30 +0200
  [PATCH v3 52/59] KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 53/59] KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 44/59] KVM: arm/arm64: GICv4: Handle MOVI applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 48/59] KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 51/59] KVM: arm/arm64: GICv4: Add doorbell interrupt handling Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
    Re: [PATCH v3 51/59] KVM: arm/arm64: GICv4: Add doorbell interrupt  handling Marc Zyngier <marc.zyngier@arm.com> - 2017-08-04 09:50 +0200
  [PATCH v3 42/59] KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 46/59] KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 56/59] KVM: arm/arm64: GICv4: Prevent heterogenous systems from using GICv4 Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 50/59] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 57/59] KVM: arm/arm64: GICv4: Theory of operations Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 19:40 +0200
  [PATCH v3 38/59] KVM: arm/arm64: vITS: Add MSI translation helpers Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 32/59] irqchip/gic-v4: Add VLPI configuration interface Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 08/59] irqchip/gic-v3-its: Split out property table allocation Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 30/59] irqchip/gic-v4: Add per-VM VPE domain creation Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 36/59] KVM: arm: Select ARM_GIC_V3 and ARM_GIC_V3_ITS Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 09/59] irqchip/gic-v3-its: Allow use of indirect VCPU tables Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 13/59] irqchip/gic-v3-its: Generalize LPI configuration Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 34/59] irqchip/gic-v4: Enable low-level GICv4 operations Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 22/59] irqchip/gic-v3-its: Add VPENDBASER/VPROPBASER accessors Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 15/59] irqchip/gic-v3-its: Add GICv4 ITS command definitions Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 27/59] irqchip/gic-v3-its: Support VPE doorbell invalidation even when !DirectLPI Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 26/59] irqchip/gic-v3-its: Add VPE interrupt masking Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 16/59] irqchip/gic-v3-its: Add VLPI configuration hook Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 28/59] irqchip/gic-v3-its: Allow doorbell interrupts to be injected/cleared Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 06/59] irqchip/gic-v3-its: Macro-ize its_send_single_command Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 25/59] irqchip/gic-v3-its: Add VPE affinity changes Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 17/59] irqchip/gic-v3-its: Add VLPI map/unmap operations Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 11/59] irqchip/gic-v3-its: Rework LPI freeing Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 20/59] irqchip/gic-v3-its: Add VPE irq domain allocation/teardown Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 18/59] irqchip/gic-v3-its: Add VLPI configuration handling Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 23/59] irqchip/gic-v3-its: Add VPE scheduling Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:00 +0200
  [PATCH v3 02/59] irqchip/gic-v3: Add redistributor iterator Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:10 +0200
  [PATCH v3 01/59] genirq: Let irq_set_vcpu_affinity() iterate over hierarchy Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:10 +0200
  [PATCH v3 07/59] irqchip/gic-v3-its: Implement irq_set_irqchip_state for pending state Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:10 +0200
  [PATCH v3 03/59] irqchip/gic-v3: Add VLPI/DirectLPI discovery Marc Zyngier <marc.zyngier@arm.com> - 2017-07-31 20:10 +0200

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