1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __KVM_X86_VMX_H 3 #define __KVM_X86_VMX_H 4 5 #include <linux/kvm_host.h> 6 7 #include <asm/kvm.h> 8 #include <asm/intel_pt.h> 9 #include <asm/perf_event.h> 10 #include <asm/posted_intr.h> 11 12 #include "capabilities.h" 13 #include "../kvm_cache_regs.h" 14 #include "vmcs.h" 15 #include "vmx_ops.h" 16 #include "../cpuid.h" 17 #include "run_flags.h" 18 #include "../mmu.h" 19 20 #define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4)) 21 22 #ifdef CONFIG_X86_64 23 #define MAX_NR_USER_RETURN_MSRS 7 24 #else 25 #define MAX_NR_USER_RETURN_MSRS 4 26 #endif 27 28 #define MAX_NR_LOADSTORE_MSRS 8 29 30 struct vmx_msrs { 31 unsigned int nr; 32 struct vmx_msr_entry val[MAX_NR_LOADSTORE_MSRS]; 33 }; 34 35 struct vmx_uret_msr { 36 bool load_into_hardware; 37 u64 data; 38 u64 mask; 39 }; 40 41 enum segment_cache_field { 42 SEG_FIELD_SEL = 0, 43 SEG_FIELD_BASE = 1, 44 SEG_FIELD_LIMIT = 2, 45 SEG_FIELD_AR = 3, 46 47 SEG_FIELD_NR = 4 48 }; 49 50 #define RTIT_ADDR_RANGE 4 51 52 struct pt_ctx { 53 u64 ctl; 54 u64 status; 55 u64 output_base; 56 u64 output_mask; 57 u64 cr3_match; 58 u64 addr_a[RTIT_ADDR_RANGE]; 59 u64 addr_b[RTIT_ADDR_RANGE]; 60 }; 61 62 struct pt_desc { 63 u64 ctl_bitmask; 64 u32 num_address_ranges; 65 u32 caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES]; 66 struct pt_ctx host; 67 struct pt_ctx guest; 68 }; 69 70 union vmx_exit_reason { 71 struct { 72 u32 basic : 16; 73 u32 reserved16 : 1; 74 u32 reserved17 : 1; 75 u32 reserved18 : 1; 76 u32 reserved19 : 1; 77 u32 reserved20 : 1; 78 u32 reserved21 : 1; 79 u32 reserved22 : 1; 80 u32 reserved23 : 1; 81 u32 reserved24 : 1; 82 u32 reserved25 : 1; 83 u32 bus_lock_detected : 1; 84 u32 enclave_mode : 1; 85 u32 smi_pending_mtf : 1; 86 u32 smi_from_vmx_root : 1; 87 u32 reserved30 : 1; 88 u32 failed_vmentry : 1; 89 }; 90 u32 full; 91 }; 92 93 struct lbr_desc { 94 /* Basic info about guest LBR records. */ 95 struct x86_pmu_lbr records; 96 97 /* 98 * Emulate LBR feature via passthrough LBR registers when the 99 * per-vcpu guest LBR event is scheduled on the current pcpu. 100 * 101 * The records may be inaccurate if the host reclaims the LBR. 102 */ 103 struct perf_event *event; 104 105 /* True if LBRs are marked as not intercepted in the MSR bitmap */ 106 bool msr_passthrough; 107 }; 108 109 extern struct x86_pmu_lbr vmx_lbr_caps; 110 111 /* 112 * The nested_vmx structure is part of vcpu_vmx, and holds information we need 113 * for correct emulation of VMX (i.e., nested VMX) on this vcpu. 114 */ 115 struct nested_vmx { 116 /* Has the level1 guest done vmxon? */ 117 bool vmxon; 118 gpa_t vmxon_ptr; 119 bool pml_full; 120 121 /* The guest-physical address of the current VMCS L1 keeps for L2 */ 122 gpa_t current_vmptr; 123 /* 124 * Cache of the guest's VMCS, existing outside of guest memory. 125 * Loaded from guest memory during VMPTRLD. Flushed to guest 126 * memory during VMCLEAR and VMPTRLD. 127 */ 128 struct vmcs12 *cached_vmcs12; 129 /* 130 * Cache of the guest's shadow VMCS, existing outside of guest 131 * memory. Loaded from guest memory during VM entry. Flushed 132 * to guest memory during VM exit. 133 */ 134 struct vmcs12 *cached_shadow_vmcs12; 135 136 /* 137 * GPA to HVA cache for accessing vmcs12->vmcs_link_pointer 138 */ 139 struct gfn_to_hva_cache shadow_vmcs12_cache; 140 141 /* 142 * GPA to HVA cache for VMCS12 143 */ 144 struct gfn_to_hva_cache vmcs12_cache; 145 146 /* 147 * Indicates if the shadow vmcs or enlightened vmcs must be updated 148 * with the data held by struct vmcs12. 149 */ 150 bool need_vmcs12_to_shadow_sync; 151 bool dirty_vmcs12; 152 153 /* 154 * Indicates whether MSR bitmap for L2 needs to be rebuilt due to 155 * changes in MSR bitmap for L1 or switching to a different L2. Note, 156 * this flag can only be used reliably in conjunction with a paravirt L1 157 * which informs L0 whether any changes to MSR bitmap for L2 were done 158 * on its side. 159 */ 160 bool force_msr_bitmap_recalc; 161 162 /* 163 * Indicates lazily loaded guest state has not yet been decached from 164 * vmcs02. 165 */ 166 bool need_sync_vmcs02_to_vmcs12_rare; 167 168 /* 169 * vmcs02 has been initialized, i.e. state that is constant for 170 * vmcs02 has been written to the backing VMCS. Initialization 171 * is delayed until L1 actually attempts to run a nested VM. 172 */ 173 bool vmcs02_initialized; 174 175 bool change_vmcs01_virtual_apic_mode; 176 bool reload_vmcs01_apic_access_page; 177 bool update_vmcs01_cpu_dirty_logging; 178 bool update_vmcs01_apicv_status; 179 180 /* 181 * Enlightened VMCS has been enabled. It does not mean that L1 has to 182 * use it. However, VMX features available to L1 will be limited based 183 * on what the enlightened VMCS supports. 184 */ 185 bool enlightened_vmcs_enabled; 186 187 /* L2 must run next, and mustn't decide to exit to L1. */ 188 bool nested_run_pending; 189 190 /* Pending MTF VM-exit into L1. */ 191 bool mtf_pending; 192 193 struct loaded_vmcs vmcs02; 194 195 /* 196 * Guest pages referred to in the vmcs02 with host-physical 197 * pointers, so we must keep them pinned while L2 runs. 198 */ 199 struct kvm_host_map apic_access_page_map; 200 struct kvm_host_map virtual_apic_map; 201 struct kvm_host_map pi_desc_map; 202 203 struct kvm_host_map msr_bitmap_map; 204 205 struct pi_desc *pi_desc; 206 bool pi_pending; 207 u16 posted_intr_nv; 208 209 struct hrtimer preemption_timer; 210 u64 preemption_timer_deadline; 211 bool has_preemption_timer_deadline; 212 bool preemption_timer_expired; 213 214 /* 215 * Used to snapshot MSRs that are conditionally loaded on VM-Enter in 216 * order to propagate the guest's pre-VM-Enter value into vmcs02. For 217 * emulation of VMLAUNCH/VMRESUME, the snapshot will be of L1's value. 218 * For KVM_SET_NESTED_STATE, the snapshot is of L2's value, _if_ 219 * userspace restores MSRs before nested state. If userspace restores 220 * MSRs after nested state, the snapshot holds garbage, but KVM can't 221 * detect that, and the garbage value in vmcs02 will be overwritten by 222 * MSR restoration in any case. 223 */ 224 u64 pre_vmenter_debugctl; 225 u64 pre_vmenter_bndcfgs; 226 227 /* to migrate it to L1 if L2 writes to L1's CR8 directly */ 228 int l1_tpr_threshold; 229 230 u16 vpid02; 231 u16 last_vpid; 232 233 struct nested_vmx_msrs msrs; 234 235 /* SMM related state */ 236 struct { 237 /* in VMX operation on SMM entry? */ 238 bool vmxon; 239 /* in guest mode on SMM entry? */ 240 bool guest_mode; 241 } smm; 242 243 #ifdef CONFIG_KVM_HYPERV 244 gpa_t hv_evmcs_vmptr; 245 struct kvm_host_map hv_evmcs_map; 246 struct hv_enlightened_vmcs *hv_evmcs; 247 #endif 248 }; 249 250 struct vcpu_vmx { 251 struct kvm_vcpu vcpu; 252 u8 fail; 253 u8 x2apic_msr_bitmap_mode; 254 255 /* 256 * If true, host state has been stored in vmx->loaded_vmcs for 257 * the CPU registers that only need to be switched when transitioning 258 * to/from the kernel, and the registers have been loaded with guest 259 * values. If false, host state is loaded in the CPU registers 260 * and vmx->loaded_vmcs->host_state is invalid. 261 */ 262 bool guest_state_loaded; 263 264 unsigned long exit_qualification; 265 u32 exit_intr_info; 266 u32 idt_vectoring_info; 267 ulong rflags; 268 269 /* 270 * User return MSRs are always emulated when enabled in the guest, but 271 * only loaded into hardware when necessary, e.g. SYSCALL #UDs outside 272 * of 64-bit mode or if EFER.SCE=1, thus the SYSCALL MSRs don't need to 273 * be loaded into hardware if those conditions aren't met. 274 */ 275 struct vmx_uret_msr guest_uret_msrs[MAX_NR_USER_RETURN_MSRS]; 276 bool guest_uret_msrs_loaded; 277 #ifdef CONFIG_X86_64 278 u64 msr_host_kernel_gs_base; 279 u64 msr_guest_kernel_gs_base; 280 #endif 281 282 u64 spec_ctrl; 283 u32 msr_ia32_umwait_control; 284 285 /* 286 * loaded_vmcs points to the VMCS currently used in this vcpu. For a 287 * non-nested (L1) guest, it always points to vmcs01. For a nested 288 * guest (L2), it points to a different VMCS. 289 */ 290 struct loaded_vmcs vmcs01; 291 struct loaded_vmcs *loaded_vmcs; 292 293 struct msr_autoload { 294 struct vmx_msrs guest; 295 struct vmx_msrs host; 296 } msr_autoload; 297 298 struct msr_autostore { 299 struct vmx_msrs guest; 300 } msr_autostore; 301 302 struct { 303 int vm86_active; 304 ulong save_rflags; 305 struct kvm_segment segs[8]; 306 } rmode; 307 struct { 308 u32 bitmask; /* 4 bits per segment (1 bit per field) */ 309 struct kvm_save_segment { 310 u16 selector; 311 unsigned long base; 312 u32 limit; 313 u32 ar; 314 } seg[8]; 315 } segment_cache; 316 int vpid; 317 bool emulation_required; 318 319 union vmx_exit_reason exit_reason; 320 321 /* Posted interrupt descriptor */ 322 struct pi_desc pi_desc; 323 324 /* Used if this vCPU is waiting for PI notification wakeup. */ 325 struct list_head pi_wakeup_list; 326 327 /* Support for a guest hypervisor (nested VMX) */ 328 struct nested_vmx nested; 329 330 /* Dynamic PLE window. */ 331 unsigned int ple_window; 332 bool ple_window_dirty; 333 334 /* Support for PML */ 335 #define PML_ENTITY_NUM 512 336 struct page *pml_pg; 337 338 /* apic deadline value in host tsc */ 339 u64 hv_deadline_tsc; 340 341 unsigned long host_debugctlmsr; 342 343 /* 344 * Only bits masked by msr_ia32_feature_control_valid_bits can be set in 345 * msr_ia32_feature_control. FEAT_CTL_LOCKED is always included 346 * in msr_ia32_feature_control_valid_bits. 347 */ 348 u64 msr_ia32_feature_control; 349 u64 msr_ia32_feature_control_valid_bits; 350 /* SGX Launch Control public key hash */ 351 u64 msr_ia32_sgxlepubkeyhash[4]; 352 u64 msr_ia32_mcu_opt_ctrl; 353 bool disable_fb_clear; 354 355 struct pt_desc pt_desc; 356 struct lbr_desc lbr_desc; 357 358 /* Save desired MSR intercept (read: pass-through) state */ 359 #define MAX_POSSIBLE_PASSTHROUGH_MSRS 16 360 struct { 361 DECLARE_BITMAP(read, MAX_POSSIBLE_PASSTHROUGH_MSRS); 362 DECLARE_BITMAP(write, MAX_POSSIBLE_PASSTHROUGH_MSRS); 363 } shadow_msr_intercept; 364 365 /* ve_info must be page aligned. */ 366 struct vmx_ve_information *ve_info; 367 }; 368 369 struct kvm_vmx { 370 struct kvm kvm; 371 372 unsigned int tss_addr; 373 bool ept_identity_pagetable_done; 374 gpa_t ept_identity_map_addr; 375 /* Posted Interrupt Descriptor (PID) table for IPI virtualization */ 376 u64 *pid_table; 377 }; 378 379 void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu, 380 struct loaded_vmcs *buddy); 381 int allocate_vpid(void); 382 void free_vpid(int vpid); 383 void vmx_set_constant_host_state(struct vcpu_vmx *vmx); 384 void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu); 385 void vmx_set_host_fs_gs(struct vmcs_host_state *host, u16 fs_sel, u16 gs_sel, 386 unsigned long fs_base, unsigned long gs_base); 387 int vmx_get_cpl(struct kvm_vcpu *vcpu); 388 bool vmx_emulation_required(struct kvm_vcpu *vcpu); 389 unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu); 390 void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags); 391 u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu); 392 void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask); 393 int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer); 394 void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); 395 void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); 396 void set_cr4_guest_host_mask(struct vcpu_vmx *vmx); 397 void ept_save_pdptrs(struct kvm_vcpu *vcpu); 398 void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); 399 void __vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); 400 u64 construct_eptp(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level); 401 402 bool vmx_guest_inject_ac(struct kvm_vcpu *vcpu); 403 void vmx_update_exception_bitmap(struct kvm_vcpu *vcpu); 404 bool vmx_nmi_blocked(struct kvm_vcpu *vcpu); 405 bool __vmx_interrupt_blocked(struct kvm_vcpu *vcpu); 406 bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu); 407 bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu); 408 void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked); 409 void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu); 410 struct vmx_uret_msr *vmx_find_uret_msr(struct vcpu_vmx *vmx, u32 msr); 411 void pt_update_intercept_for_msr(struct kvm_vcpu *vcpu); 412 void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp); 413 void vmx_spec_ctrl_restore_host(struct vcpu_vmx *vmx, unsigned int flags); 414 unsigned int __vmx_vcpu_run_flags(struct vcpu_vmx *vmx); 415 bool __vmx_vcpu_run(struct vcpu_vmx *vmx, unsigned long *regs, 416 unsigned int flags); 417 int vmx_find_loadstore_msr_slot(struct vmx_msrs *m, u32 msr); 418 void vmx_ept_load_pdptrs(struct kvm_vcpu *vcpu); 419 420 void vmx_disable_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, int type); 421 void vmx_enable_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, int type); 422 423 u64 vmx_get_l2_tsc_offset(struct kvm_vcpu *vcpu); 424 u64 vmx_get_l2_tsc_multiplier(struct kvm_vcpu *vcpu); 425 426 gva_t vmx_get_untagged_addr(struct kvm_vcpu *vcpu, gva_t gva, unsigned int flags); 427 vmx_set_intercept_for_msr(struct kvm_vcpu * vcpu,u32 msr,int type,bool value)428 static inline void vmx_set_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, 429 int type, bool value) 430 { 431 if (value) 432 vmx_enable_intercept_for_msr(vcpu, msr, type); 433 else 434 vmx_disable_intercept_for_msr(vcpu, msr, type); 435 } 436 437 void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu); 438 439 /* 440 * Note, early Intel manuals have the write-low and read-high bitmap offsets 441 * the wrong way round. The bitmaps control MSRs 0x00000000-0x00001fff and 442 * 0xc0000000-0xc0001fff. The former (low) uses bytes 0-0x3ff for reads and 443 * 0x800-0xbff for writes. The latter (high) uses 0x400-0x7ff for reads and 444 * 0xc00-0xfff for writes. MSRs not covered by either of the ranges always 445 * VM-Exit. 446 */ 447 #define __BUILD_VMX_MSR_BITMAP_HELPER(rtype, action, bitop, access, base) \ 448 static inline rtype vmx_##action##_msr_bitmap_##access(unsigned long *bitmap, \ 449 u32 msr) \ 450 { \ 451 int f = sizeof(unsigned long); \ 452 \ 453 if (msr <= 0x1fff) \ 454 return bitop##_bit(msr, bitmap + base / f); \ 455 else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) \ 456 return bitop##_bit(msr & 0x1fff, bitmap + (base + 0x400) / f); \ 457 return (rtype)true; \ 458 } 459 #define BUILD_VMX_MSR_BITMAP_HELPERS(ret_type, action, bitop) \ 460 __BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, read, 0x0) \ 461 __BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, write, 0x800) 462 BUILD_VMX_MSR_BITMAP_HELPERS(bool,test,test)463 BUILD_VMX_MSR_BITMAP_HELPERS(bool, test, test) 464 BUILD_VMX_MSR_BITMAP_HELPERS(void, clear, __clear) 465 BUILD_VMX_MSR_BITMAP_HELPERS(void, set, __set) 466 467 static inline u8 vmx_get_rvi(void) 468 { 469 return vmcs_read16(GUEST_INTR_STATUS) & 0xff; 470 } 471 472 #define __KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \ 473 (VM_ENTRY_LOAD_DEBUG_CONTROLS) 474 #ifdef CONFIG_X86_64 475 #define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \ 476 (__KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS | \ 477 VM_ENTRY_IA32E_MODE) 478 #else 479 #define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \ 480 __KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS 481 #endif 482 #define KVM_OPTIONAL_VMX_VM_ENTRY_CONTROLS \ 483 (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL | \ 484 VM_ENTRY_LOAD_IA32_PAT | \ 485 VM_ENTRY_LOAD_IA32_EFER | \ 486 VM_ENTRY_LOAD_BNDCFGS | \ 487 VM_ENTRY_PT_CONCEAL_PIP | \ 488 VM_ENTRY_LOAD_IA32_RTIT_CTL) 489 490 #define __KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \ 491 (VM_EXIT_SAVE_DEBUG_CONTROLS | \ 492 VM_EXIT_ACK_INTR_ON_EXIT) 493 #ifdef CONFIG_X86_64 494 #define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \ 495 (__KVM_REQUIRED_VMX_VM_EXIT_CONTROLS | \ 496 VM_EXIT_HOST_ADDR_SPACE_SIZE) 497 #else 498 #define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \ 499 __KVM_REQUIRED_VMX_VM_EXIT_CONTROLS 500 #endif 501 #define KVM_OPTIONAL_VMX_VM_EXIT_CONTROLS \ 502 (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \ 503 VM_EXIT_SAVE_IA32_PAT | \ 504 VM_EXIT_LOAD_IA32_PAT | \ 505 VM_EXIT_SAVE_IA32_EFER | \ 506 VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | \ 507 VM_EXIT_LOAD_IA32_EFER | \ 508 VM_EXIT_CLEAR_BNDCFGS | \ 509 VM_EXIT_PT_CONCEAL_PIP | \ 510 VM_EXIT_CLEAR_IA32_RTIT_CTL) 511 512 #define KVM_REQUIRED_VMX_PIN_BASED_VM_EXEC_CONTROL \ 513 (PIN_BASED_EXT_INTR_MASK | \ 514 PIN_BASED_NMI_EXITING) 515 #define KVM_OPTIONAL_VMX_PIN_BASED_VM_EXEC_CONTROL \ 516 (PIN_BASED_VIRTUAL_NMIS | \ 517 PIN_BASED_POSTED_INTR | \ 518 PIN_BASED_VMX_PREEMPTION_TIMER) 519 520 #define __KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \ 521 (CPU_BASED_HLT_EXITING | \ 522 CPU_BASED_CR3_LOAD_EXITING | \ 523 CPU_BASED_CR3_STORE_EXITING | \ 524 CPU_BASED_UNCOND_IO_EXITING | \ 525 CPU_BASED_MOV_DR_EXITING | \ 526 CPU_BASED_USE_TSC_OFFSETTING | \ 527 CPU_BASED_MWAIT_EXITING | \ 528 CPU_BASED_MONITOR_EXITING | \ 529 CPU_BASED_INVLPG_EXITING | \ 530 CPU_BASED_RDPMC_EXITING | \ 531 CPU_BASED_INTR_WINDOW_EXITING) 532 533 #ifdef CONFIG_X86_64 534 #define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \ 535 (__KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL | \ 536 CPU_BASED_CR8_LOAD_EXITING | \ 537 CPU_BASED_CR8_STORE_EXITING) 538 #else 539 #define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \ 540 __KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL 541 #endif 542 543 #define KVM_OPTIONAL_VMX_CPU_BASED_VM_EXEC_CONTROL \ 544 (CPU_BASED_RDTSC_EXITING | \ 545 CPU_BASED_TPR_SHADOW | \ 546 CPU_BASED_USE_IO_BITMAPS | \ 547 CPU_BASED_MONITOR_TRAP_FLAG | \ 548 CPU_BASED_USE_MSR_BITMAPS | \ 549 CPU_BASED_NMI_WINDOW_EXITING | \ 550 CPU_BASED_PAUSE_EXITING | \ 551 CPU_BASED_ACTIVATE_SECONDARY_CONTROLS | \ 552 CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) 553 554 #define KVM_REQUIRED_VMX_SECONDARY_VM_EXEC_CONTROL 0 555 #define KVM_OPTIONAL_VMX_SECONDARY_VM_EXEC_CONTROL \ 556 (SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | \ 557 SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE | \ 558 SECONDARY_EXEC_WBINVD_EXITING | \ 559 SECONDARY_EXEC_ENABLE_VPID | \ 560 SECONDARY_EXEC_ENABLE_EPT | \ 561 SECONDARY_EXEC_UNRESTRICTED_GUEST | \ 562 SECONDARY_EXEC_PAUSE_LOOP_EXITING | \ 563 SECONDARY_EXEC_DESC | \ 564 SECONDARY_EXEC_ENABLE_RDTSCP | \ 565 SECONDARY_EXEC_ENABLE_INVPCID | \ 566 SECONDARY_EXEC_APIC_REGISTER_VIRT | \ 567 SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | \ 568 SECONDARY_EXEC_SHADOW_VMCS | \ 569 SECONDARY_EXEC_ENABLE_XSAVES | \ 570 SECONDARY_EXEC_RDSEED_EXITING | \ 571 SECONDARY_EXEC_RDRAND_EXITING | \ 572 SECONDARY_EXEC_ENABLE_PML | \ 573 SECONDARY_EXEC_TSC_SCALING | \ 574 SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE | \ 575 SECONDARY_EXEC_PT_USE_GPA | \ 576 SECONDARY_EXEC_PT_CONCEAL_VMX | \ 577 SECONDARY_EXEC_ENABLE_VMFUNC | \ 578 SECONDARY_EXEC_BUS_LOCK_DETECTION | \ 579 SECONDARY_EXEC_NOTIFY_VM_EXITING | \ 580 SECONDARY_EXEC_ENCLS_EXITING | \ 581 SECONDARY_EXEC_EPT_VIOLATION_VE) 582 583 #define KVM_REQUIRED_VMX_TERTIARY_VM_EXEC_CONTROL 0 584 #define KVM_OPTIONAL_VMX_TERTIARY_VM_EXEC_CONTROL \ 585 (TERTIARY_EXEC_IPI_VIRT) 586 587 #define BUILD_CONTROLS_SHADOW(lname, uname, bits) \ 588 static inline void lname##_controls_set(struct vcpu_vmx *vmx, u##bits val) \ 589 { \ 590 if (vmx->loaded_vmcs->controls_shadow.lname != val) { \ 591 vmcs_write##bits(uname, val); \ 592 vmx->loaded_vmcs->controls_shadow.lname = val; \ 593 } \ 594 } \ 595 static inline u##bits __##lname##_controls_get(struct loaded_vmcs *vmcs) \ 596 { \ 597 return vmcs->controls_shadow.lname; \ 598 } \ 599 static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx) \ 600 { \ 601 return __##lname##_controls_get(vmx->loaded_vmcs); \ 602 } \ 603 static __always_inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u##bits val) \ 604 { \ 605 BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_##uname | KVM_OPTIONAL_VMX_##uname))); \ 606 lname##_controls_set(vmx, lname##_controls_get(vmx) | val); \ 607 } \ 608 static __always_inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##bits val) \ 609 { \ 610 BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_##uname | KVM_OPTIONAL_VMX_##uname))); \ 611 lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val); \ 612 } 613 BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32) 614 BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32) 615 BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32) 616 BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32) 617 BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32) 618 BUILD_CONTROLS_SHADOW(tertiary_exec, TERTIARY_VM_EXEC_CONTROL, 64) 619 620 /* 621 * VMX_REGS_LAZY_LOAD_SET - The set of registers that will be updated in the 622 * cache on demand. Other registers not listed here are synced to 623 * the cache immediately after VM-Exit. 624 */ 625 #define VMX_REGS_LAZY_LOAD_SET ((1 << VCPU_REGS_RIP) | \ 626 (1 << VCPU_REGS_RSP) | \ 627 (1 << VCPU_EXREG_RFLAGS) | \ 628 (1 << VCPU_EXREG_PDPTR) | \ 629 (1 << VCPU_EXREG_SEGMENTS) | \ 630 (1 << VCPU_EXREG_CR0) | \ 631 (1 << VCPU_EXREG_CR3) | \ 632 (1 << VCPU_EXREG_CR4) | \ 633 (1 << VCPU_EXREG_EXIT_INFO_1) | \ 634 (1 << VCPU_EXREG_EXIT_INFO_2)) 635 vmx_l1_guest_owned_cr0_bits(void)636 static inline unsigned long vmx_l1_guest_owned_cr0_bits(void) 637 { 638 unsigned long bits = KVM_POSSIBLE_CR0_GUEST_BITS; 639 640 /* 641 * CR0.WP needs to be intercepted when KVM is shadowing legacy paging 642 * in order to construct shadow PTEs with the correct protections. 643 * Note! CR0.WP technically can be passed through to the guest if 644 * paging is disabled, but checking CR0.PG would generate a cyclical 645 * dependency of sorts due to forcing the caller to ensure CR0 holds 646 * the correct value prior to determining which CR0 bits can be owned 647 * by L1. Keep it simple and limit the optimization to EPT. 648 */ 649 if (!enable_ept) 650 bits &= ~X86_CR0_WP; 651 return bits; 652 } 653 to_kvm_vmx(struct kvm * kvm)654 static __always_inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm) 655 { 656 return container_of(kvm, struct kvm_vmx, kvm); 657 } 658 to_vmx(struct kvm_vcpu * vcpu)659 static __always_inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu) 660 { 661 return container_of(vcpu, struct vcpu_vmx, vcpu); 662 } 663 vcpu_to_lbr_desc(struct kvm_vcpu * vcpu)664 static inline struct lbr_desc *vcpu_to_lbr_desc(struct kvm_vcpu *vcpu) 665 { 666 return &to_vmx(vcpu)->lbr_desc; 667 } 668 vcpu_to_lbr_records(struct kvm_vcpu * vcpu)669 static inline struct x86_pmu_lbr *vcpu_to_lbr_records(struct kvm_vcpu *vcpu) 670 { 671 return &vcpu_to_lbr_desc(vcpu)->records; 672 } 673 intel_pmu_lbr_is_enabled(struct kvm_vcpu * vcpu)674 static inline bool intel_pmu_lbr_is_enabled(struct kvm_vcpu *vcpu) 675 { 676 return !!vcpu_to_lbr_records(vcpu)->nr; 677 } 678 679 void intel_pmu_cross_mapped_check(struct kvm_pmu *pmu); 680 int intel_pmu_create_guest_lbr_event(struct kvm_vcpu *vcpu); 681 void vmx_passthrough_lbr_msrs(struct kvm_vcpu *vcpu); 682 vmx_get_exit_qual(struct kvm_vcpu * vcpu)683 static __always_inline unsigned long vmx_get_exit_qual(struct kvm_vcpu *vcpu) 684 { 685 struct vcpu_vmx *vmx = to_vmx(vcpu); 686 687 if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_1)) 688 vmx->exit_qualification = vmcs_readl(EXIT_QUALIFICATION); 689 690 return vmx->exit_qualification; 691 } 692 vmx_get_intr_info(struct kvm_vcpu * vcpu)693 static __always_inline u32 vmx_get_intr_info(struct kvm_vcpu *vcpu) 694 { 695 struct vcpu_vmx *vmx = to_vmx(vcpu); 696 697 if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_2)) 698 vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); 699 700 return vmx->exit_intr_info; 701 } 702 703 struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags); 704 void free_vmcs(struct vmcs *vmcs); 705 int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs); 706 void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs); 707 void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs); 708 alloc_vmcs(bool shadow)709 static inline struct vmcs *alloc_vmcs(bool shadow) 710 { 711 return alloc_vmcs_cpu(shadow, raw_smp_processor_id(), 712 GFP_KERNEL_ACCOUNT); 713 } 714 vmx_has_waitpkg(struct vcpu_vmx * vmx)715 static inline bool vmx_has_waitpkg(struct vcpu_vmx *vmx) 716 { 717 return secondary_exec_controls_get(vmx) & 718 SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE; 719 } 720 vmx_need_pf_intercept(struct kvm_vcpu * vcpu)721 static inline bool vmx_need_pf_intercept(struct kvm_vcpu *vcpu) 722 { 723 if (!enable_ept) 724 return true; 725 726 return allow_smaller_maxphyaddr && 727 cpuid_maxphyaddr(vcpu) < kvm_host.maxphyaddr; 728 } 729 is_unrestricted_guest(struct kvm_vcpu * vcpu)730 static inline bool is_unrestricted_guest(struct kvm_vcpu *vcpu) 731 { 732 return enable_unrestricted_guest && (!is_guest_mode(vcpu) || 733 (secondary_exec_controls_get(to_vmx(vcpu)) & 734 SECONDARY_EXEC_UNRESTRICTED_GUEST)); 735 } 736 737 bool __vmx_guest_state_valid(struct kvm_vcpu *vcpu); vmx_guest_state_valid(struct kvm_vcpu * vcpu)738 static inline bool vmx_guest_state_valid(struct kvm_vcpu *vcpu) 739 { 740 return is_unrestricted_guest(vcpu) || __vmx_guest_state_valid(vcpu); 741 } 742 743 void dump_vmcs(struct kvm_vcpu *vcpu); 744 vmx_get_instr_info_reg2(u32 vmx_instr_info)745 static inline int vmx_get_instr_info_reg2(u32 vmx_instr_info) 746 { 747 return (vmx_instr_info >> 28) & 0xf; 748 } 749 vmx_can_use_ipiv(struct kvm_vcpu * vcpu)750 static inline bool vmx_can_use_ipiv(struct kvm_vcpu *vcpu) 751 { 752 return lapic_in_kernel(vcpu) && enable_ipiv; 753 } 754 vmx_segment_cache_clear(struct vcpu_vmx * vmx)755 static inline void vmx_segment_cache_clear(struct vcpu_vmx *vmx) 756 { 757 vmx->segment_cache.bitmask = 0; 758 } 759 760 #endif /* __KVM_X86_VMX_H */ 761