When virtual machine starts, hang up. The kernel version of guest is 4.16. Host support vgic_v3. It was mainly due to the incorrect vgic_irq's(intid=27) group value during injection interruption. when kvm_vgic_vcpu_init is called, dist is not initialized at this time. Unable to get vgic V3 or V2 correctly, so group is not set. group is setted to 1 when vgic_mmio_write_group is invoked at some time. when irq->group=0 (intid=27), No ICH_LR_GROUP flag was set and interrupt injection failed. Signed-off-by: Peng Hao <peng.hao2@xxxxxxxxxx> --- virt/kvm/arm/vgic/vgic-v3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c index 9c0dd23..d101000 100644 --- a/virt/kvm/arm/vgic/vgic-v3.c +++ b/virt/kvm/arm/vgic/vgic-v3.c @@ -198,7 +198,7 @@ void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr) if (vgic_irq_is_mapped_level(irq) && (val & ICH_LR_PENDING_BIT)) irq->line_level = false; - if (irq->group) + if (model == KVM_DEV_TYPE_ARM_VGIC_V3) val |= ICH_LR_GROUP; val |= (u64)irq->priority << ICH_LR_PRIORITY_SHIFT; -- 1.8.3.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
