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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-06-09 12:49:35 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2017-06-15 09:44:59 +0100 |
| commit | f8b630bc542e0368886ae193d3519c832b270359 (patch) | |
| tree | 6d8f0cb9cc51c92a61ab545f171ede54cc0b91a0 /virt | |
| parent | d70c7b31a60f2458f35c226131f2a01a7a98b6cf (diff) | |
| download | linux-f8b630bc542e0368886ae193d3519c832b270359.tar.gz linux-f8b630bc542e0368886ae193d3519c832b270359.tar.bz2 linux-f8b630bc542e0368886ae193d3519c832b270359.zip | |
KVM: arm64: vgic-v3: Add ICV_IGRPEN1_EL1 handler
Add a handler for reading/writing the guest's view of the ICC_IGRPEN1_EL1
register, which is located in the ICH_VMCR_EL2.VENG1 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.c | 23 |
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 fe021abc8b51..25f09721241f 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -401,6 +401,23 @@ static unsigned int __hyp_text __vgic_v3_get_bpr1(u32 vmcr) return bpr; } +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_igrpen1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + u64 val = vcpu_get_reg(vcpu, rt); + + if (val & 1) + vmcr |= ICH_VMCR_ENG1_MASK; + else + vmcr &= ~ICH_VMCR_ENG1_MASK; + + __vgic_v3_write_vmcr(vmcr); +} + static void __hyp_text __vgic_v3_read_bpr1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) { vcpu_set_reg(vcpu, rt, __vgic_v3_get_bpr1(vmcr)); @@ -448,6 +465,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) is_read = (esr & ESR_ELx_SYS64_ISS_DIR_MASK) == ESR_ELx_SYS64_ISS_DIR_READ; switch (sysreg) { + case SYS_ICC_GRPEN1_EL1: + if (is_read) + fn = __vgic_v3_read_igrpen1; + else + fn = __vgic_v3_write_igrpen1; + break; case SYS_ICC_BPR1_EL1: if (is_read) fn = __vgic_v3_read_bpr1; |