This patch is used for GICv2 on GICv2.
About GICV_APRn hardware register access,the SPEC says:
When System register access is disabled for EL2, these registers access
GICH_APRn, and all active priorities for virtual machines are held in
GICH_APRn regardless of interrupt group.
For GICv2 hardware, there are at most 5 priority bits are implemented in
GICH_LRn.Priority, so we only need to be concerned with GICH_APR0.
The other GICH_APRn (n = 1-3) access should be treated as raz/wi.
Signed-off-by: wanghaibin <wanghaibin.wang@xxxxxxxxxx>
---
virt/kvm/arm/vgic/vgic-mmio.c | 5 +++++
virt/kvm/arm/vgic/vgic-v2.c | 18 ++++++++++++++++++
virt/kvm/arm/vgic/vgic.h | 2 ++
3 files changed, 25 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c
index deed781..f6f3681 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.c
+++ b/virt/kvm/arm/vgic/vgic-mmio.c
@@ -456,10 +456,15 @@ static int match_region(const void *key, const void *elt)
void vgic_set_apr(struct kvm_vcpu *vcpu, u32 idx, u32 val)
{
+ if (kvm_vgic_global_state.type == VGIC_V2)
+ vgic_v2_set_apr(vcpu, idx, val);
}
u32 vgic_get_apr(struct kvm_vcpu *vcpu, u32 idx)
{
+ if (kvm_vgic_global_state.type == VGIC_V2)
+ return vgic_v2_get_apr(vcpu, idx);
+
return 0;
}
diff --git a/virt/kvm/arm/vgic/vgic-v2.c b/virt/kvm/arm/vgic/vgic-v2.c
index e4187e5..65daf35 100644
--- a/virt/kvm/arm/vgic/vgic-v2.c
+++ b/virt/kvm/arm/vgic/vgic-v2.c
@@ -172,6 +172,24 @@ void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr)
vcpu->arch.vgic_cpu.vgic_v2.vgic_lr[lr] = 0;
}
+void vgic_v2_set_apr(struct kvm_vcpu *vcpu, u32 idx, u32 val)
+{
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
+
+ if (idx == 0)
+ cpu_if->vgic_apr = val;
+}
+
+u32 vgic_v2_get_apr(struct kvm_vcpu *vcpu, u32 idx)
+{
+ struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
+
+ if (idx == 0)
+ return cpu_if->vgic_apr;
+ else
+ return 0;
+}
+
void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp)
{
struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index c2be5b7..441ded7 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -155,6 +155,8 @@ int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
int offset, u32 *val);
int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool is_write,
int offset, u32 *val);
+void vgic_v2_set_apr(struct kvm_vcpu *vcpu, u32 idx, u32 val);
+u32 vgic_v2_get_apr(struct kvm_vcpu *vcpu, u32 idx);
void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v2_enable(struct kvm_vcpu *vcpu);
--
1.8.3.1
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