[RFC PATCH 02/45] KVM: arm/arm64: pmu: abstract access to number of SPIs
From: andre.przywara@arm.com (Andre Przywara)
Date: 2016-03-25 02:04:25
Also in:
kvm, kvmarm
Subsystem:
kernel virtual machine (kvm), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Paolo Bonzini, Marc Zyngier, Oliver Upton, Linus Torvalds
Currently the PMU uses a member of the struct vgic_dist directly, which not only breaks abstraction, but will fail with the new VGIC. Abstract this access in the VGIC header file. Signed-off-by: Andre Przywara <andre.przywara@arm.com> --- include/kvm/arm_vgic.h | 2 ++ virt/kvm/arm/pmu.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 13a3d53..2b89e27 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h@@ -356,6 +356,8 @@ bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, struct irq_phys_map *map); #define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel)) #define vgic_initialized(k) (!!((k)->arch.vgic.nr_cpus)) #define vgic_ready(k) ((k)->arch.vgic.ready) +#define vgic_valid_spi(k,i) (((i) >= VGIC_NR_PRIVATE_IRQS) && \ + ((i) < (k)->arch.vgic.nr_irqs)) int vgic_v2_probe(struct device_node *vgic_node, const struct vgic_ops **ops,
diff --git a/virt/kvm/arm/pmu.c b/virt/kvm/arm/pmu.c
index b5754c6..0b2c1fa 100644
--- a/virt/kvm/arm/pmu.c
+++ b/virt/kvm/arm/pmu.c@@ -476,7 +476,7 @@ int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) * the interrupt number is the same for all vcpus, while as an * SPI it must be a separate number per vcpu. */ - if (irq < VGIC_NR_SGIS || irq >= vcpu->kvm->arch.vgic.nr_irqs || + if (irq < VGIC_NR_SGIS || !vgic_valid_spi(vcpu->kvm, irq) || !irq_is_valid(vcpu->kvm, irq, irq < VGIC_NR_PRIVATE_IRQS)) return -EINVAL;
--
2.7.3