Add a handler for reading/writing the guest's view of the ICC_PMR_EL1
register, which is located in the ICH_VMCR_EL2.VPMR field.
Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
---
virt/kvm/arm/hyp/vgic-v3-sr.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index 981201bf7a5e..4fbeeb54704e 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -848,6 +848,27 @@ static void __hyp_text __vgic_v3_read_hppir(struct
kvm_vcpu *vcpu,
vcpu_set_reg(vcpu, rt, lr_val & ICH_LR_VIRTUAL_ID_MASK);
}
+static void __hyp_text __vgic_v3_read_pmr(struct kvm_vcpu *vcpu,
+ u32 vmcr, int rt)
+{
+ vmcr &= ICH_VMCR_PMR_MASK;
+ vmcr >>= ICH_VMCR_PMR_SHIFT;
+ vcpu_set_reg(vcpu, rt, vmcr);
+}
+
+static void __hyp_text __vgic_v3_write_pmr(struct kvm_vcpu *vcpu,
+ u32 vmcr, int rt)
+{
+ u32 val = vcpu_get_reg(vcpu, rt);
+
+ val <<= ICH_VMCR_PMR_SHIFT;
+ val &= ICH_VMCR_PMR_MASK;
+ vmcr &= ~ICH_VMCR_PMR_MASK;
+ vmcr |= val;
+
+ write_gicreg(vmcr, ICH_VMCR_EL2);
+}
+
static void __hyp_text __vgic_v3_read_rpr(struct kvm_vcpu *vcpu,
u32 vmcr, int rt)
{
@@ -991,6 +1012,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct
kvm_vcpu *vcpu)
else
fn = __vgic_v3_write_ctlr;
break;
+ case SYS_ICC_PMR_EL1:
+ if (is_read)
+ fn = __vgic_v3_read_pmr;
+ else
+ fn = __vgic_v3_write_pmr;
+ break;
default:
return 0;
}
--
2.11.0
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