Add a handler for reading/writing the guest's view of the ICC_IGRPEN0_EL1 register, which is located in the ICH_VMCR_EL2.VENG0 field.
Reviewed-by: Eric Auger <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- arch/arm64/include/asm/sysreg.h | 1 + virt/kvm/arm/hyp/vgic-v3-sr.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index d20be0b28ca4..ba93bc7ac8e4 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -190,6 +190,7 @@ #define SYS_ICC_BPR1_EL1 sys_reg(3, 0, 12, 12, 3) #define SYS_ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4) #define SYS_ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5) +#define SYS_ICC_GRPEN0_EL1 sys_reg(3, 0, 12, 12, 6) #define SYS_ICC_GRPEN1_EL1 sys_reg(3, 0, 12, 12, 7) #define SYS_CONTEXTIDR_EL1 sys_reg(3, 0, 13, 0, 1) diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c index 54a8e828c85b..b1b9129da045 100644 --- a/virt/kvm/arm/hyp/vgic-v3-sr.c +++ b/virt/kvm/arm/hyp/vgic-v3-sr.c @@ -671,11 +671,28 @@ static void __hyp_text __vgic_v3_write_eoir(struct kvm_vcpu *vcpu, u32 vmcr, int __vgic_v3_clear_active_lr(lr, lr_val); } +static void __hyp_text __vgic_v3_read_igrpen0(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + vcpu_set_reg(vcpu, rt, !!(vmcr & ICH_VMCR_ENG0_MASK)); +} + 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_igrpen0(struct kvm_vcpu *vcpu, u32 vmcr, int rt) +{ + u64 val = vcpu_get_reg(vcpu, rt); + + if (val & 1) + vmcr |= ICH_VMCR_ENG0_MASK; + else + vmcr &= ~ICH_VMCR_ENG0_MASK; + + __vgic_v3_write_vmcr(vmcr); +} + static void __hyp_text __vgic_v3_write_igrpen1(struct kvm_vcpu *vcpu, u32 vmcr, int rt) { u64 val = vcpu_get_reg(vcpu, rt); @@ -900,6 +917,12 @@ int __hyp_text __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu) case SYS_ICC_HPPIR1_EL1: fn = __vgic_v3_read_hppir; break; + case SYS_ICC_GRPEN0_EL1: + if (is_read) + fn = __vgic_v3_read_igrpen0; + else + fn = __vgic_v3_write_igrpen0; + break; case SYS_ICC_BPR0_EL1: if (is_read) fn = __vgic_v3_read_bpr0; -- 2.11.0 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
