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author | Eric Auger <eric.auger@linaro.org> | 2015-12-02 09:30:13 (GMT) |
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committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-05-20 13:40:07 (GMT) |
commit | f7b6985cc3d0f0f6f35990301d80d858c148e10c (patch) | |
tree | e4cf74e3ba323fce1d659a4117c4bdfdf7e34212 /virt/kvm/arm/vgic/vgic-v3.c | |
parent | b0442ee227e826afc4df16cdfb8bd6eef6a8f425 (diff) | |
download | linux-f7b6985cc3d0f0f6f35990301d80d858c148e10c.tar.xz |
KVM: arm/arm64: vgic-new: Add vgic_v2/v3_enable
Enable the VGIC operation by properly initialising the registers
in the hypervisor GIC interface.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-v3.c')
-rw-r--r-- | virt/kvm/arm/vgic/vgic-v3.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c index 637ff2b..336a461 100644 --- a/virt/kvm/arm/vgic/vgic-v3.c +++ b/virt/kvm/arm/vgic/vgic-v3.c @@ -186,9 +186,30 @@ void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcrp) vmcrp->pmr = (vmcr & ICH_VMCR_PMR_MASK) >> ICH_VMCR_PMR_SHIFT; } -/* not yet implemented */ void vgic_v3_enable(struct kvm_vcpu *vcpu) { + struct vgic_v3_cpu_if *vgic_v3 = &vcpu->arch.vgic_cpu.vgic_v3; + + /* + * By forcing VMCR to zero, the GIC will restore the binary + * points to their reset values. Anything else resets to zero + * anyway. + */ + vgic_v3->vgic_vmcr = 0; + vgic_v3->vgic_elrsr = ~0; + + /* + * If we are emulating a GICv3, we do it in an non-GICv2-compatible + * way, so we force SRE to 1 to demonstrate this to the guest. + * This goes with the spec allowing the value to be RAO/WI. + */ + if (vcpu->kvm->arch.vgic.vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3) + vgic_v3->vgic_sre = ICC_SRE_EL1_SRE; + else + vgic_v3->vgic_sre = 0; + + /* Get the show on the road... */ + vgic_v3->vgic_hcr = ICH_HCR_EN; } /* check for overlapping regions and for regions crossing the end of memory */ |