diff options
Diffstat (limited to 'arch/arm64/kvm/vgic-sys-reg-v3.c')
| -rw-r--r-- | arch/arm64/kvm/vgic-sys-reg-v3.c | 127 |
1 files changed, 125 insertions, 2 deletions
diff --git a/arch/arm64/kvm/vgic-sys-reg-v3.c b/arch/arm64/kvm/vgic-sys-reg-v3.c index 5eacb4b3250a..bdc2d57370b2 100644 --- a/arch/arm64/kvm/vgic-sys-reg-v3.c +++ b/arch/arm64/kvm/vgic-sys-reg-v3.c @@ -297,6 +297,91 @@ static int get_gic_sre(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, return 0; } +static int set_gic_ich_reg(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 val) +{ + __vcpu_assign_sys_reg(vcpu, r->reg, val); + return 0; +} + +static int get_gic_ich_reg(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 *val) +{ + *val = __vcpu_sys_reg(vcpu, r->reg); + return 0; +} + +static int set_gic_ich_apr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 val) +{ + u8 idx = r->Op2 & 3; + + if (idx > vgic_v3_max_apr_idx(vcpu)) + return -EINVAL; + + return set_gic_ich_reg(vcpu, r, val); +} + +static int get_gic_ich_apr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 *val) +{ + u8 idx = r->Op2 & 3; + + if (idx > vgic_v3_max_apr_idx(vcpu)) + return -EINVAL; + + return get_gic_ich_reg(vcpu, r, val); +} + +static int set_gic_icc_sre(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 val) +{ + if (val != KVM_ICC_SRE_EL2) + return -EINVAL; + return 0; +} + +static int get_gic_icc_sre(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 *val) +{ + *val = KVM_ICC_SRE_EL2; + return 0; +} + +static int set_gic_ich_vtr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 val) +{ + if (val != kvm_get_guest_vtr_el2()) + return -EINVAL; + return 0; +} + +static int get_gic_ich_vtr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r, + u64 *val) +{ + *val = kvm_get_guest_vtr_el2(); + return 0; +} + +static unsigned int el2_visibility(const struct kvm_vcpu *vcpu, + const struct sys_reg_desc *rd) +{ + return vcpu_has_nv(vcpu) ? 0 : REG_HIDDEN; +} + +#define __EL2_REG(r, acc, i) \ + { \ + SYS_DESC(SYS_ ## r), \ + .get_user = get_gic_ ## acc, \ + .set_user = set_gic_ ## acc, \ + .reg = i, \ + .visibility = el2_visibility, \ + } + +#define EL2_REG(r, acc) __EL2_REG(r, acc, r) + +#define EL2_REG_RO(r, acc) __EL2_REG(r, acc, 0) + static const struct sys_reg_desc gic_v3_icc_reg_descs[] = { { SYS_DESC(SYS_ICC_PMR_EL1), .set_user = set_gic_pmr, .get_user = get_gic_pmr, }, @@ -328,8 +413,42 @@ static const struct sys_reg_desc gic_v3_icc_reg_descs[] = { .set_user = set_gic_grpen0, .get_user = get_gic_grpen0, }, { SYS_DESC(SYS_ICC_IGRPEN1_EL1), .set_user = set_gic_grpen1, .get_user = get_gic_grpen1, }, + EL2_REG(ICH_AP0R0_EL2, ich_apr), + EL2_REG(ICH_AP0R1_EL2, ich_apr), + EL2_REG(ICH_AP0R2_EL2, ich_apr), + EL2_REG(ICH_AP0R3_EL2, ich_apr), + EL2_REG(ICH_AP1R0_EL2, ich_apr), + EL2_REG(ICH_AP1R1_EL2, ich_apr), + EL2_REG(ICH_AP1R2_EL2, ich_apr), + EL2_REG(ICH_AP1R3_EL2, ich_apr), + EL2_REG_RO(ICC_SRE_EL2, icc_sre), + EL2_REG(ICH_HCR_EL2, ich_reg), + EL2_REG_RO(ICH_VTR_EL2, ich_vtr), + EL2_REG(ICH_VMCR_EL2, ich_reg), + EL2_REG(ICH_LR0_EL2, ich_reg), + EL2_REG(ICH_LR1_EL2, ich_reg), + EL2_REG(ICH_LR2_EL2, ich_reg), + EL2_REG(ICH_LR3_EL2, ich_reg), + EL2_REG(ICH_LR4_EL2, ich_reg), + EL2_REG(ICH_LR5_EL2, ich_reg), + EL2_REG(ICH_LR6_EL2, ich_reg), + EL2_REG(ICH_LR7_EL2, ich_reg), + EL2_REG(ICH_LR8_EL2, ich_reg), + EL2_REG(ICH_LR9_EL2, ich_reg), + EL2_REG(ICH_LR10_EL2, ich_reg), + EL2_REG(ICH_LR11_EL2, ich_reg), + EL2_REG(ICH_LR12_EL2, ich_reg), + EL2_REG(ICH_LR13_EL2, ich_reg), + EL2_REG(ICH_LR14_EL2, ich_reg), + EL2_REG(ICH_LR15_EL2, ich_reg), }; +const struct sys_reg_desc *vgic_v3_get_sysreg_table(unsigned int *sz) +{ + *sz = ARRAY_SIZE(gic_v3_icc_reg_descs); + return gic_v3_icc_reg_descs; +} + static u64 attr_to_id(u64 attr) { return ARM64_SYS_REG(FIELD_GET(KVM_REG_ARM_VGIC_SYSREG_OP0_MASK, attr), @@ -341,8 +460,12 @@ static u64 attr_to_id(u64 attr) int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr) { - if (get_reg_by_id(attr_to_id(attr->attr), gic_v3_icc_reg_descs, - ARRAY_SIZE(gic_v3_icc_reg_descs))) + const struct sys_reg_desc *r; + + r = get_reg_by_id(attr_to_id(attr->attr), gic_v3_icc_reg_descs, + ARRAY_SIZE(gic_v3_icc_reg_descs)); + + if (r && !sysreg_hidden(vcpu, r)) return 0; return -ENXIO; |