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authorMarc Zyngier <marc.zyngier@arm.com>2017-06-09 14:49:52 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2017-06-15 11:45:05 +0300
commit6293d6514d6b0945210e15edcecc71d99cfca97c (patch)
treec1fdc547fed051b2f47c5963d1bc075afba08421 /virt
parentd840b2d37d3ef2463db38274c6fd72619acbe216 (diff)
downloadlinux-6293d6514d6b0945210e15edcecc71d99cfca97c.tar.xz
KVM: arm64: vgic-v3: Add ICV_PMR_EL1 handler
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. 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.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index a8a58dedc38e..15b557697086 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -884,6 +884,27 @@ spurious:
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)
{
@@ -1029,6 +1050,12 @@ 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;
}