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authorChristoffer Dall <christoffer.dall@arm.com>2018-07-16 16:06:18 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-07-21 18:02:19 +0300
commita2dca217dae29c4ff6420e8c78d56b3f61ae0797 (patch)
tree200738d26872550c7bd7de4850b96c9ca9f622ae /virt/kvm/arm/vgic
parent9bc03f1df31a3228289d5046780071ab8e91aa1a (diff)
downloadlinux-a2dca217dae29c4ff6420e8c78d56b3f61ae0797.tar.xz
KVM: arm/arm64: vgic: Define GICD_IIDR fields for GICv2 and GIv3
Instead of hardcoding the shifts and masks in the GICD_IIDR register emulation, let's add the definition of these fields to the GIC header files and use them. This will make things more obvious when we're going to bump the revision in the IIDR when we'll make guest-visible changes to the implementation. Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt/kvm/arm/vgic')
-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v2.c3
-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v3.c3
2 files changed, 4 insertions, 2 deletions
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v2.c b/virt/kvm/arm/vgic/vgic-mmio-v2.c
index ffc587bf4742..af44e569373a 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v2.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v2.c
@@ -37,7 +37,8 @@ static unsigned long vgic_mmio_read_v2_misc(struct kvm_vcpu *vcpu,
value |= (atomic_read(&vcpu->kvm->online_vcpus) - 1) << 5;
break;
case GIC_DIST_IIDR:
- value = (PRODUCT_ID_KVM << 24) | (IMPLEMENTER_ARM << 0);
+ value = (PRODUCT_ID_KVM << GICD_IIDR_PRODUCT_ID_SHIFT) |
+ (IMPLEMENTER_ARM << GICD_IIDR_IMPLEMENTER_SHIFT);
break;
default:
return 0;
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 287784095b5b..c03f42409b98 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -81,7 +81,8 @@ static unsigned long vgic_mmio_read_v3_misc(struct kvm_vcpu *vcpu,
}
break;
case GICD_IIDR:
- value = (PRODUCT_ID_KVM << 24) | (IMPLEMENTER_ARM << 0);
+ value = (PRODUCT_ID_KVM << GICD_IIDR_PRODUCT_ID_SHIFT) |
+ (IMPLEMENTER_ARM << GICD_IIDR_IMPLEMENTER_SHIFT);
break;
default:
return 0;