diff options
Diffstat (limited to 'arch/x86/kvm/vmx/vmcs12.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmcs12.c | 74 |
1 files changed, 70 insertions, 4 deletions
diff --git a/arch/x86/kvm/vmx/vmcs12.c b/arch/x86/kvm/vmx/vmcs12.c index 4233b5ca9461..1ebe67c384ad 100644 --- a/arch/x86/kvm/vmx/vmcs12.c +++ b/arch/x86/kvm/vmx/vmcs12.c @@ -4,12 +4,12 @@ #include "vmcs12.h" #define VMCS12_OFFSET(x) offsetof(struct vmcs12, x) -#define FIELD(number, name) [ROL16(number, 6)] = VMCS12_OFFSET(name) +#define FIELD(number, name) [ENC_TO_VMCS12_IDX(number)] = VMCS12_OFFSET(name) #define FIELD64(number, name) \ FIELD(number, name), \ - [ROL16(number##_HIGH, 6)] = VMCS12_OFFSET(name) + sizeof(u32) + [ENC_TO_VMCS12_IDX(number##_HIGH)] = VMCS12_OFFSET(name) + sizeof(u32) -const unsigned short vmcs12_field_offsets[] = { +static const u16 kvm_supported_vmcs12_field_offsets[] __initconst = { FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id), FIELD(POSTED_INTR_NV, posted_intr_nv), FIELD(GUEST_ES_SELECTOR, guest_es_selector), @@ -158,4 +158,70 @@ const unsigned short vmcs12_field_offsets[] = { FIELD(HOST_SSP, host_ssp), FIELD(HOST_INTR_SSP_TABLE, host_ssp_tbl), }; -const unsigned int nr_vmcs12_fields = ARRAY_SIZE(vmcs12_field_offsets); + +u16 vmcs12_field_offsets[ARRAY_SIZE(kvm_supported_vmcs12_field_offsets)] __ro_after_init; +unsigned int nr_vmcs12_fields __ro_after_init; + +#define VMCS12_CASE64(enc) case enc##_HIGH: case enc + +static __init bool cpu_has_vmcs12_field(unsigned int idx) +{ + switch (VMCS12_IDX_TO_ENC(idx)) { + case VIRTUAL_PROCESSOR_ID: + return cpu_has_vmx_vpid(); + case POSTED_INTR_NV: + return cpu_has_vmx_posted_intr(); + VMCS12_CASE64(TSC_MULTIPLIER): + return cpu_has_vmx_tsc_scaling(); + case TPR_THRESHOLD: + VMCS12_CASE64(VIRTUAL_APIC_PAGE_ADDR): + return cpu_has_vmx_tpr_shadow(); + VMCS12_CASE64(APIC_ACCESS_ADDR): + return cpu_has_vmx_virtualize_apic_accesses(); + VMCS12_CASE64(POSTED_INTR_DESC_ADDR): + return cpu_has_vmx_posted_intr(); + case GUEST_INTR_STATUS: + return cpu_has_vmx_virtual_intr_delivery(); + VMCS12_CASE64(VM_FUNCTION_CONTROL): + VMCS12_CASE64(EPTP_LIST_ADDRESS): + return cpu_has_vmx_vmfunc(); + VMCS12_CASE64(EPT_POINTER): + return cpu_has_vmx_ept(); + VMCS12_CASE64(XSS_EXIT_BITMAP): + return cpu_has_vmx_xsaves(); + VMCS12_CASE64(ENCLS_EXITING_BITMAP): + return cpu_has_vmx_encls_vmexit(); + VMCS12_CASE64(GUEST_IA32_PERF_GLOBAL_CTRL): + VMCS12_CASE64(HOST_IA32_PERF_GLOBAL_CTRL): + return cpu_has_load_perf_global_ctrl(); + case SECONDARY_VM_EXEC_CONTROL: + return cpu_has_secondary_exec_ctrls(); + case GUEST_S_CET: + case GUEST_SSP: + case GUEST_INTR_SSP_TABLE: + case HOST_S_CET: + case HOST_SSP: + case HOST_INTR_SSP_TABLE: + return cpu_has_load_cet_ctrl(); + + /* KVM always emulates PML and the VMX preemption timer in software. */ + case GUEST_PML_INDEX: + case VMX_PREEMPTION_TIMER_VALUE: + default: + return true; + } +} + +void __init nested_vmx_setup_vmcs12_fields(void) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(kvm_supported_vmcs12_field_offsets); i++) { + if (!kvm_supported_vmcs12_field_offsets[i] || + !cpu_has_vmcs12_field(i)) + continue; + + vmcs12_field_offsets[i] = kvm_supported_vmcs12_field_offsets[i]; + nr_vmcs12_fields = i + 1; + } +} |