/*
* vgic_init: allocates and initializes dist and vcpu data structures
* depending on two dimensioning parameters:
* - the number of spis
* - the number of vcpus
* The function is generally called when nr_spis has been explicitly set
* by the guest through the KVM DEVICE API. If not nr_spis is set to 256.
* vgic_initialized() returns true when this function has succeeded.
* Must be called with kvm->lock held!
*/
int vgic_init(struct kvm *kvm)
{
struct vgic_dist *dist = &kvm->arch.vgic;
struct kvm_vcpu *vcpu;
int ret = 0, i;
if (vgic_initialized(kvm))
return 0;
/* freeze the number of spis */
if (!dist->nr_spis)
dist->nr_spis = VGIC_NR_IRQS_LEGACY - VGIC_NR_PRIVATE_IRQS;
ret = kvm_vgic_dist_init(kvm, dist->nr_spis);
if (ret)
goto out;
if (vgic_has_its(kvm))
dist->msis_require_devid = true;
kvm_for_each_vcpu(i, vcpu, kvm)
kvm_vgic_vcpu_init(vcpu);
ret = kvm_vgic_setup_default_irq_routing(kvm);
if (ret)
goto out;
dist->initialized = true;
out:
return ret;
}
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
{
/* Force users to call KVM_ARM_VCPU_INIT */
vcpu->arch.target = -1;
bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
/* Set up the timer */
kvm_timer_vcpu_init(vcpu);
kvm_arm_reset_debug_ptr(vcpu);
return kvm_vgic_vcpu_init(vcpu);
}