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KVM: arm64: vgic-v3: Add ICV_RPR_EL1 handler

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Add a handler for reading the guest's view of the ICV_RPR_EL1
register, returning the highest active priority.

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>
This commit is contained in:
Marc Zyngier 2017-06-09 12:49:50 +01:00
parent 40228ba57c
commit 43515894c0
2 changed files with 11 additions and 0 deletions
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1
arch/arm64/include/asm/sysreg.h
View File

@ -187,6 +187,7 @@
#define SYS_ICC_AP0Rn_EL1(n) sys_reg(3, 0, 12, 8, 4 | n)
#define SYS_ICC_AP1Rn_EL1(n) sys_reg(3, 0, 12, 9, n)
#define SYS_ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1)
#define SYS_ICC_RPR_EL1 sys_reg(3, 0, 12, 11, 3)
#define SYS_ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5)
#define SYS_ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0)
#define SYS_ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1)

10
virt/kvm/arm/hyp/vgic-v3-sr.c
View File

@ -884,6 +884,13 @@ spurious:
vcpu_set_reg(vcpu, rt, lr_val & ICH_LR_VIRTUAL_ID_MASK);
}
static void __hyp_text __vgic_v3_read_rpr(struct kvm_vcpu *vcpu,
u32 vmcr, int rt)
{
u32 val = __vgic_v3_get_highest_active_priority();
vcpu_set_reg(vcpu, rt, val);
}
int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu)
{
int rt;
@ -973,6 +980,9 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu)
case SYS_ICC_DIR_EL1:
fn = __vgic_v3_write_dir;
break;
case SYS_ICC_RPR_EL1:
fn = __vgic_v3_read_rpr;
break;
default:
return 0;
}