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authorMarc Zyngier <marc.zyngier@arm.com>2017-06-09 14:49:50 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2017-06-15 11:45:05 +0300
commit43515894c06f856b7743145e002591309f60b247 (patch)
treec480a138b14d8d7ed51fca2da102257c3cc03415 /virt
parent40228ba57c8532d4977d684a363915402d85dbf9 (diff)
downloadlinux-43515894c06f856b7743145e002591309f60b247.tar.xz
KVM: arm64: vgic-v3: Add ICV_RPR_EL1 handler
Add a handler for reading the guest's view of the ICV_RPR_EL1 register, returning the highest active priority. Tested-by: Alexander Graf <agraf@suse.de> Acked-by: David Daney <david.daney@cavium.com> Acked-by: Christoffer Dall <cdall@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/hyp/vgic-v3-sr.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index 2f2af03e8932..406da9c667ff 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -884,6 +884,13 @@ spurious:
vcpu_set_reg(vcpu, rt, lr_val & ICH_LR_VIRTUAL_ID_MASK);
}
+static void __hyp_text __vgic_v3_read_rpr(struct kvm_vcpu *vcpu,
+ u32 vmcr, int rt)
+{
+ u32 val = __vgic_v3_get_highest_active_priority();
+ vcpu_set_reg(vcpu, rt, val);
+}
+
int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu)
{
int rt;
@@ -973,6 +980,9 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu)
case SYS_ICC_DIR_EL1:
fn = __vgic_v3_write_dir;
break;
+ case SYS_ICC_RPR_EL1:
+ fn = __vgic_v3_read_rpr;
+ break;
default:
return 0;
}