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authorMarc Zyngier <marc.zyngier@arm.com>2017-06-09 12:49:43 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2017-06-15 09:45:02 +0100
commitfbc48a0011deb3d51cb657ca9c0f9083f41c0665 (patch)
treee7820a1143154e39affc4ef525cc2e2a13d05d8f /virt
parent423de85a98c2b50715a0784a74f6124fbc0b1548 (diff)
downloadblackbird-obmc-linux-fbc48a0011deb3d51cb657ca9c0f9083f41c0665.tar.gz
blackbird-obmc-linux-fbc48a0011deb3d51cb657ca9c0f9083f41c0665.zip
KVM: arm64: vgic-v3: Add ICV_IGNREN0_EL1 handler
Add a handler for reading/writing the guest's view of the ICC_IGRPEN0_EL1 register, which is located in the ICH_VMCR_EL2.VENG0 field. Tested-by: Alexander Graf <agraf@suse.de> Acked-by: David Daney <david.daney@cavium.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> 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.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index f53908cc981c..45927762bf14 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -689,11 +689,28 @@ static void __hyp_text __vgic_v3_write_eoir(struct kvm_vcpu *vcpu, u32 vmcr, int
__vgic_v3_clear_active_lr(lr, lr_val);
}
+static void __hyp_text __vgic_v3_read_igrpen0(struct kvm_vcpu *vcpu, u32 vmcr, int rt)
+{
+ vcpu_set_reg(vcpu, rt, !!(vmcr & ICH_VMCR_ENG0_MASK));
+}
+
static void __hyp_text __vgic_v3_read_igrpen1(struct kvm_vcpu *vcpu, u32 vmcr, int rt)
{
vcpu_set_reg(vcpu, rt, !!(vmcr & ICH_VMCR_ENG1_MASK));
}
+static void __hyp_text __vgic_v3_write_igrpen0(struct kvm_vcpu *vcpu, u32 vmcr, int rt)
+{
+ u64 val = vcpu_get_reg(vcpu, rt);
+
+ if (val & 1)
+ vmcr |= ICH_VMCR_ENG0_MASK;
+ else
+ vmcr &= ~ICH_VMCR_ENG0_MASK;
+
+ __vgic_v3_write_vmcr(vmcr);
+}
+
static void __hyp_text __vgic_v3_write_igrpen1(struct kvm_vcpu *vcpu, u32 vmcr, int rt)
{
u64 val = vcpu_get_reg(vcpu, rt);
@@ -910,6 +927,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu)
case SYS_ICC_HPPIR1_EL1:
fn = __vgic_v3_read_hppir;
break;
+ case SYS_ICC_GRPEN0_EL1:
+ if (is_read)
+ fn = __vgic_v3_read_igrpen0;
+ else
+ fn = __vgic_v3_write_igrpen0;
+ break;
case SYS_ICC_BPR0_EL1:
if (is_read)
fn = __vgic_v3_read_bpr0;
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