diff options
Diffstat (limited to 'arch/arm64/kvm/vgic/vgic.h')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h index 4349084cb9a6..1384a04c0784 100644 --- a/arch/arm64/kvm/vgic/vgic.h +++ b/arch/arm64/kvm/vgic/vgic.h @@ -64,6 +64,24 @@ KVM_REG_ARM_VGIC_SYSREG_CRM_MASK | \ KVM_REG_ARM_VGIC_SYSREG_OP2_MASK) +#define KVM_ICC_SRE_EL2 (ICC_SRE_EL2_ENABLE | ICC_SRE_EL2_SRE | \ + ICC_SRE_EL1_DIB | ICC_SRE_EL1_DFB) +#define KVM_ICH_VTR_EL2_RES0 (ICH_VTR_EL2_DVIM | \ + ICH_VTR_EL2_A3V | \ + ICH_VTR_EL2_IDbits) +#define KVM_ICH_VTR_EL2_RES1 ICH_VTR_EL2_nV4 + +static inline u64 kvm_get_guest_vtr_el2(void) +{ + u64 vtr; + + vtr = kvm_vgic_global_state.ich_vtr_el2; + vtr &= ~KVM_ICH_VTR_EL2_RES0; + vtr |= KVM_ICH_VTR_EL2_RES1; + + return vtr; +} + /* * As per Documentation/virt/kvm/devices/arm-vgic-its.rst, * below macros are defined for ITS table entry encoding. @@ -297,6 +315,7 @@ int vgic_v3_redist_uaccess(struct kvm_vcpu *vcpu, bool is_write, int vgic_v3_cpu_sysregs_uaccess(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr, bool is_write); int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); +const struct sys_reg_desc *vgic_v3_get_sysreg_table(unsigned int *sz); int vgic_v3_line_level_info_uaccess(struct kvm_vcpu *vcpu, bool is_write, u32 intid, u32 *val); int kvm_register_vgic_device(unsigned long type); @@ -308,6 +327,8 @@ int vgic_init(struct kvm *kvm); void vgic_debug_init(struct kvm *kvm); void vgic_debug_destroy(struct kvm *kvm); +int vgic_v5_probe(const struct gic_kvm_info *info); + static inline int vgic_v3_max_apr_idx(struct kvm_vcpu *vcpu) { struct vgic_cpu *cpu_if = &vcpu->arch.vgic_cpu; @@ -369,7 +390,23 @@ void vgic_its_invalidate_all_caches(struct kvm *kvm); int vgic_its_inv_lpi(struct kvm *kvm, struct vgic_irq *irq); int vgic_its_invall(struct kvm_vcpu *vcpu); +bool system_supports_direct_sgis(void); bool vgic_supports_direct_msis(struct kvm *kvm); +bool vgic_supports_direct_sgis(struct kvm *kvm); + +static inline bool vgic_supports_direct_irqs(struct kvm *kvm) +{ + /* + * Deliberately conflate vLPI and vSGI support on GICv4.1 hardware, + * indirectly allowing userspace to control whether or not vPEs are + * allocated for the VM. + */ + if (system_supports_direct_sgis()) + return vgic_supports_direct_sgis(kvm); + + return vgic_supports_direct_msis(kvm); +} + int vgic_v4_init(struct kvm *kvm); void vgic_v4_teardown(struct kvm *kvm); void vgic_v4_configure_vsgis(struct kvm *kvm); @@ -389,6 +426,17 @@ void vgic_v3_put_nested(struct kvm_vcpu *vcpu); void vgic_v3_handle_nested_maint_irq(struct kvm_vcpu *vcpu); void vgic_v3_nested_update_mi(struct kvm_vcpu *vcpu); +static inline bool vgic_is_v3_compat(struct kvm *kvm) +{ + return cpus_have_final_cap(ARM64_HAS_GICV5_CPUIF) && + kvm_vgic_global_state.has_gcie_v3_compat; +} + +static inline bool vgic_is_v3(struct kvm *kvm) +{ + return kvm_vgic_global_state.type == VGIC_V3 || vgic_is_v3_compat(kvm); +} + int vgic_its_debug_init(struct kvm_device *dev); void vgic_its_debug_destroy(struct kvm_device *dev); |