diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/hyp/vgic-v2-sr.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c index a052f2056cc0..c8aeb7b91ec8 100644 --- a/virt/kvm/arm/hyp/vgic-v2-sr.c +++ b/virt/kvm/arm/hyp/vgic-v2-sr.c @@ -170,7 +170,18 @@ void __hyp_text __vgic_v2_restore_state(struct kvm_vcpu *vcpu) } #ifdef CONFIG_ARM64 -bool __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu) +/* + * __vgic_v2_perform_cpuif_access -- perform a GICV access on behalf of the + * guest. + * + * @vcpu: the offending vcpu + * + * Returns: + * 1: GICV access successfully performed + * 0: Not a GICV access + * -1: Illegal GICV access + */ +int __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu) { struct kvm *kvm = kern_hyp_va(vcpu->kvm); struct vgic_dist *vgic = &kvm->arch.vgic; @@ -185,15 +196,15 @@ bool __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu) /* If not for GICV, move on */ if (fault_ipa < vgic->vgic_cpu_base || fault_ipa >= (vgic->vgic_cpu_base + KVM_VGIC_V2_CPU_SIZE)) - return false; + return 0; /* Reject anything but a 32bit access */ if (kvm_vcpu_dabt_get_as(vcpu) != sizeof(u32)) - return false; + return -1; /* Not aligned? Don't bother */ if (fault_ipa & 3) - return false; + return -1; rd = kvm_vcpu_dabt_get_rd(vcpu); addr = kern_hyp_va((kern_hyp_va(&kvm_vgic_global_state))->vcpu_base_va); @@ -210,6 +221,6 @@ bool __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu) sizeof(u32))); } - return true; + return 1; } #endif |