summaryrefslogtreecommitdiff
path: root/virt/kvm/arm/vgic.c
diff options
context:
space:
mode:
Diffstat (limited to 'virt/kvm/arm/vgic.c')
-rw-r--r--virt/kvm/arm/vgic.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 81e9481184a7..5e9df47778fb 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1243,15 +1243,19 @@ static irqreturn_t vgic_maintenance_handler(int irq, void *data)
return IRQ_HANDLED;
}
+/**
+ * kvm_vgic_vcpu_init - Initialize per-vcpu VGIC state
+ * @vcpu: pointer to the vcpu struct
+ *
+ * Initialize the vgic_cpu struct and vgic_dist struct fields pertaining to
+ * this vcpu and enable the VGIC for this VCPU
+ */
int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
int i;
- if (!irqchip_in_kernel(vcpu->kvm))
- return 0;
-
if (vcpu->vcpu_id >= VGIC_MAX_CPUS)
return -EBUSY;
@@ -1383,10 +1387,22 @@ out:
return ret;
}
+/**
+ * kvm_vgic_init - Initialize global VGIC state before running any VCPUs
+ * @kvm: pointer to the kvm struct
+ *
+ * Map the virtual CPU interface into the VM before running any VCPUs. We
+ * can't do this at creation time, because user space must first set the
+ * virtual CPU interface address in the guest physical address space. Also
+ * initialize the ITARGETSRn regs to 0 on the emulated distributor.
+ */
int kvm_vgic_init(struct kvm *kvm)
{
int ret = 0, i;
+ if (!irqchip_in_kernel(kvm))
+ return 0;
+
mutex_lock(&kvm->lock);
if (vgic_initialized(kvm))