Add a handler for reading/writing the guest's view of the ICV_CTLR_EL1 register. only EOIMode and CBPR are of interest here, as all the other bits directly come from ICH_VTR_EL2 and are Read-Only.
Reviewed-by: Eric Auger <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- virt/kvm/arm/hyp/vgic-v3-sr.c | 46 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index cac9d563d97d..3a5749e6c797 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -881,6 +881,46 @@ static void __hyp_text __vgic_v3_read_rpr(struct kvm_vcpu *vcpu, vcpu_set_reg(vcpu, rt, val); } +static void __hyp_text __vgic_v3_read_ctlr(struct kvm_vcpu *vcpu, + u32 vmcr, int rt) +{ + u32 vtr, val; + + vtr = read_gicreg(ICH_VTR_EL2); + /* PRIbits */ + val = ((vtr >> 29) & 7) << ICC_CTLR_EL1_PRI_BITS_SHIFT; + /* IDbits */ + val |= ((vtr >> 23) & 7) << ICC_CTLR_EL1_ID_BITS_SHIFT; + /* SEIS */ + val |= ((vtr >> 22) & 1) << ICC_CTLR_EL1_SEIS_SHIFT; + /* A3V */ + val |= ((vtr >> 21) & 1) << ICC_CTLR_EL1_A3V_SHIFT; + /* EOImode */ + val |= ((vmcr & ICH_VMCR_EOIM_MASK) >> ICH_VMCR_EOIM_SHIFT) << ICC_CTLR_EL1_EOImode_SHIFT; + /* CBPR */ + val |= (vmcr & ICH_VMCR_CBPR_MASK) >> ICH_VMCR_CBPR_SHIFT; + + vcpu_set_reg(vcpu, rt, val); +} + +static void __hyp_text __vgic_v3_write_ctlr(struct kvm_vcpu *vcpu, + u32 vmcr, int rt) +{ + u32 val = vcpu_get_reg(vcpu, rt); + + if (val & ICC_CTLR_EL1_CBPR_MASK) + vmcr |= ICH_VMCR_CBPR_MASK; + else + vmcr &= ~ICH_VMCR_CBPR_MASK; + + if (val & ICC_CTLR_EL1_EOImode_MASK) + vmcr |= ICH_VMCR_EOIM_MASK; + else + vmcr &= ~ICH_VMCR_EOIM_MASK; + + write_gicreg(vmcr, ICH_VMCR_EL2); +} + int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) { int rt; @@ -973,6 +1013,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) case SYS_ICC_RPR_EL1: fn = __vgic_v3_read_rpr; break; + case SYS_ICC_CTLR_EL1: + if (is_read) + fn = __vgic_v3_read_ctlr; + else + fn = __vgic_v3_write_ctlr; + break; default: return 0; } -- 2.11.0 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
