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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-06-09 12:49:50 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2017-06-15 09:45:05 +0100 |
| commit | 43515894c06f856b7743145e002591309f60b247 (patch) | |
| tree | c480a138b14d8d7ed51fca2da102257c3cc03415 | |
| parent | 40228ba57c8532d4977d684a363915402d85dbf9 (diff) | |
| download | linux-43515894c06f856b7743145e002591309f60b247.tar.bz2 | |
KVM: arm64: vgic-v3: Add ICV_RPR_EL1 handler
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>
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 1 | ||||
| -rw-r--r-- | virt/kvm/arm/hyp/vgic-v3-sr.c | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 670bf51d55e3..56a3247e928c 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -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) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index 2f2af03e8932..406da9c667ff 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -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; } |