| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sean Christopherson | 615 | 78.75% | 1 | 12.50% |
| Vitaly Kuznetsov | 166 | 21.25% | 7 | 87.50% |
| Total | 781 | 8 |
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __KVM_X86_VMX_EVMCS_H #define __KVM_X86_VMX_EVMCS_H #include <linux/jump_label.h> #include <asm/hyperv-tlfs.h> #include <asm/mshyperv.h> #include <asm/vmx.h> #include "capabilities.h" #include "vmcs.h" #include "vmcs12.h" struct vmcs_config; DECLARE_STATIC_KEY_FALSE(enable_evmcs); #define current_evmcs ((struct hv_enlightened_vmcs *)this_cpu_read(current_vmcs)) #define KVM_EVMCS_VERSION 1 /* * Enlightened VMCSv1 doesn't support these: * * POSTED_INTR_NV = 0x00000002, * GUEST_INTR_STATUS = 0x00000810, * APIC_ACCESS_ADDR = 0x00002014, * POSTED_INTR_DESC_ADDR = 0x00002016, * EOI_EXIT_BITMAP0 = 0x0000201c, * EOI_EXIT_BITMAP1 = 0x0000201e, * EOI_EXIT_BITMAP2 = 0x00002020, * EOI_EXIT_BITMAP3 = 0x00002022, * GUEST_PML_INDEX = 0x00000812, * PML_ADDRESS = 0x0000200e, * VM_FUNCTION_CONTROL = 0x00002018, * EPTP_LIST_ADDRESS = 0x00002024, * VMREAD_BITMAP = 0x00002026, * VMWRITE_BITMAP = 0x00002028, * * TSC_MULTIPLIER = 0x00002032, * PLE_GAP = 0x00004020, * PLE_WINDOW = 0x00004022, * VMX_PREEMPTION_TIMER_VALUE = 0x0000482E, * GUEST_IA32_PERF_GLOBAL_CTRL = 0x00002808, * HOST_IA32_PERF_GLOBAL_CTRL = 0x00002c04, * * Currently unsupported in KVM: * GUEST_IA32_RTIT_CTL = 0x00002814, */ #define EVMCS1_UNSUPPORTED_PINCTRL (PIN_BASED_POSTED_INTR | \ PIN_BASED_VMX_PREEMPTION_TIMER) #define EVMCS1_UNSUPPORTED_2NDEXEC \ (SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | \ SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | \ SECONDARY_EXEC_APIC_REGISTER_VIRT | \ SECONDARY_EXEC_ENABLE_PML | \ SECONDARY_EXEC_ENABLE_VMFUNC | \ SECONDARY_EXEC_SHADOW_VMCS | \ SECONDARY_EXEC_TSC_SCALING | \ SECONDARY_EXEC_PAUSE_LOOP_EXITING) #define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL) #define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL) #define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING) #if IS_ENABLED(CONFIG_HYPERV) struct evmcs_field { u16 offset; u16 clean_field; }; extern const struct evmcs_field vmcs_field_to_evmcs_1[]; extern const unsigned int nr_evmcs_1_fields; #define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n))))) static __always_inline int get_evmcs_offset(unsigned long field, u16 *clean_field) { unsigned int index = ROL16(field, 6); const struct evmcs_field *evmcs_field; if (unlikely(index >= nr_evmcs_1_fields)) { WARN_ONCE(1, "KVM: accessing unsupported EVMCS field %lx\n", field); return -ENOENT; } evmcs_field = &vmcs_field_to_evmcs_1[index]; if (clean_field) *clean_field = evmcs_field->clean_field; return evmcs_field->offset; } #undef ROL16 static inline void evmcs_write64(unsigned long field, u64 value) { u16 clean_field; int offset = get_evmcs_offset(field, &clean_field); if (offset < 0) return; *(u64 *)((char *)current_evmcs + offset) = value; current_evmcs->hv_clean_fields &= ~clean_field; } static inline void evmcs_write32(unsigned long field, u32 value) { u16 clean_field; int offset = get_evmcs_offset(field, &clean_field); if (offset < 0) return; *(u32 *)((char *)current_evmcs + offset) = value; current_evmcs->hv_clean_fields &= ~clean_field; } static inline void evmcs_write16(unsigned long field, u16 value) { u16 clean_field; int offset = get_evmcs_offset(field, &clean_field); if (offset < 0) return; *(u16 *)((char *)current_evmcs + offset) = value; current_evmcs->hv_clean_fields &= ~clean_field; } static inline u64 evmcs_read64(unsigned long field) { int offset = get_evmcs_offset(field, NULL); if (offset < 0) return 0; return *(u64 *)((char *)current_evmcs + offset); } static inline u32 evmcs_read32(unsigned long field) { int offset = get_evmcs_offset(field, NULL); if (offset < 0) return 0; return *(u32 *)((char *)current_evmcs + offset); } static inline u16 evmcs_read16(unsigned long field) { int offset = get_evmcs_offset(field, NULL); if (offset < 0) return 0; return *(u16 *)((char *)current_evmcs + offset); } static inline void evmcs_touch_msr_bitmap(void) { if (unlikely(!current_evmcs)) return; if (current_evmcs->hv_enlightenments_control.msr_bitmap) current_evmcs->hv_clean_fields &= ~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP; } static inline void evmcs_load(u64 phys_addr) { struct hv_vp_assist_page *vp_ap = hv_get_vp_assist_page(smp_processor_id()); if (current_evmcs->hv_enlightenments_control.nested_flush_hypercall) vp_ap->nested_control.features.directhypercall = 1; vp_ap->current_nested_vmcs = phys_addr; vp_ap->enlighten_vmentry = 1; } void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf); #else /* !IS_ENABLED(CONFIG_HYPERV) */ static inline void evmcs_write64(unsigned long field, u64 value) {} static inline void evmcs_write32(unsigned long field, u32 value) {} static inline void evmcs_write16(unsigned long field, u16 value) {} static inline u64 evmcs_read64(unsigned long field) { return 0; } static inline u32 evmcs_read32(unsigned long field) { return 0; } static inline u16 evmcs_read16(unsigned long field) { return 0; } static inline void evmcs_load(u64 phys_addr) {} static inline void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf) {} static inline void evmcs_touch_msr_bitmap(void) {} #endif /* IS_ENABLED(CONFIG_HYPERV) */ enum nested_evmptrld_status { EVMPTRLD_DISABLED, EVMPTRLD_SUCCEEDED, EVMPTRLD_VMFAIL, EVMPTRLD_ERROR, }; bool nested_enlightened_vmentry(struct kvm_vcpu *vcpu, u64 *evmcs_gpa); uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu); int nested_enable_evmcs(struct kvm_vcpu *vcpu, uint16_t *vmcs_version); void nested_evmcs_filter_control_msr(u32 msr_index, u64 *pdata); int nested_evmcs_check_controls(struct vmcs12 *vmcs12); #endif /* __KVM_X86_VMX_EVMCS_H */
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