diff options
Diffstat (limited to 'virt/kvm/arm/pmu.c')
| -rw-r--r-- | virt/kvm/arm/pmu.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/virt/kvm/arm/pmu.c b/virt/kvm/arm/pmu.c index 9923eb90cdc7..fc8a723ff387 100644 --- a/virt/kvm/arm/pmu.c +++ b/virt/kvm/arm/pmu.c @@ -458,10 +458,24 @@ int kvm_arm_pmu_v3_enable(struct kvm_vcpu *vcpu) /* * A valid interrupt configuration for the PMU is either to have a * properly configured interrupt number and using an in-kernel - * irqchip, or to neither set an IRQ nor create an in-kernel irqchip. + * irqchip, or to not have an in-kernel GIC and not set an IRQ. */ - if (kvm_arm_pmu_irq_initialized(vcpu) != irqchip_in_kernel(vcpu->kvm)) - return -EINVAL; + if (irqchip_in_kernel(vcpu->kvm)) { + int irq = vcpu->arch.pmu.irq_num; + if (!kvm_arm_pmu_irq_initialized(vcpu)) + return -EINVAL; + + /* + * If we are using an in-kernel vgic, at this point we know + * the vgic will be initialized, so we can check the PMU irq + * number against the dimensions of the vgic and make sure + * it's valid. + */ + if (!irq_is_ppi(irq) && !vgic_valid_spi(vcpu->kvm, irq)) + return -EINVAL; + } else if (kvm_arm_pmu_irq_initialized(vcpu)) { + return -EINVAL; + } kvm_pmu_vcpu_reset(vcpu); vcpu->arch.pmu.ready = true; @@ -547,7 +561,7 @@ int kvm_arm_pmu_v3_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) return -EFAULT; /* The PMU overflow interrupt can be a PPI or a valid SPI. */ - if (!(irq_is_ppi(irq) || vgic_valid_spi(vcpu->kvm, irq))) + if (!(irq_is_ppi(irq) || irq_is_spi(irq))) return -EINVAL; if (!pmu_irq_is_valid(vcpu->kvm, irq)) |