1 /* 2 * Kernel-based Virtual Machine driver for Linux 3 * 4 * This header defines architecture specific interfaces, x86 version 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2. See 7 * the COPYING file in the top-level directory. 8 * 9 */ 10 11 #ifndef _ASM_X86_KVM_HOST_H 12 #define _ASM_X86_KVM_HOST_H 13 14 #include <linux/types.h> 15 #include <linux/mm.h> 16 #include <linux/mmu_notifier.h> 17 #include <linux/tracepoint.h> 18 #include <linux/cpumask.h> 19 #include <linux/irq_work.h> 20 21 #include <linux/kvm.h> 22 #include <linux/kvm_para.h> 23 #include <linux/kvm_types.h> 24 #include <linux/perf_event.h> 25 #include <linux/pvclock_gtod.h> 26 #include <linux/clocksource.h> 27 28 #include <asm/pvclock-abi.h> 29 #include <asm/desc.h> 30 #include <asm/mtrr.h> 31 #include <asm/msr-index.h> 32 #include <asm/asm.h> 33 34 #define KVM_MAX_VCPUS 255 35 #define KVM_SOFT_MAX_VCPUS 160 36 #define KVM_USER_MEM_SLOTS 509 37 /* memory slots that are not exposed to userspace */ 38 #define KVM_PRIVATE_MEM_SLOTS 3 39 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) 40 41 #define KVM_PIO_PAGE_OFFSET 1 42 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 43 44 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS 45 46 #define CR0_RESERVED_BITS \ 47 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \ 48 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \ 49 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) 50 51 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL 52 #define CR3_PCID_INVD BIT_64(63) 53 #define CR4_RESERVED_BITS \ 54 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ 55 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ 56 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \ 57 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \ 58 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP)) 59 60 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) 61 62 63 64 #define INVALID_PAGE (~(hpa_t)0) 65 #define VALID_PAGE(x) ((x) != INVALID_PAGE) 66 67 #define UNMAPPED_GVA (~(gpa_t)0) 68 69 /* KVM Hugepage definitions for x86 */ 70 #define KVM_NR_PAGE_SIZES 3 71 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9) 72 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x)) 73 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x)) 74 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) 75 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) 76 77 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) 78 { 79 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ 80 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - 81 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); 82 } 83 84 #define KVM_PERMILLE_MMU_PAGES 20 85 #define KVM_MIN_ALLOC_MMU_PAGES 64 86 #define KVM_MMU_HASH_SHIFT 10 87 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) 88 #define KVM_MIN_FREE_MMU_PAGES 5 89 #define KVM_REFILL_PAGES 25 90 #define KVM_MAX_CPUID_ENTRIES 80 91 #define KVM_NR_FIXED_MTRR_REGION 88 92 #define KVM_NR_VAR_MTRR 8 93 94 #define ASYNC_PF_PER_VCPU 64 95 96 enum kvm_reg { 97 VCPU_REGS_RAX = 0, 98 VCPU_REGS_RCX = 1, 99 VCPU_REGS_RDX = 2, 100 VCPU_REGS_RBX = 3, 101 VCPU_REGS_RSP = 4, 102 VCPU_REGS_RBP = 5, 103 VCPU_REGS_RSI = 6, 104 VCPU_REGS_RDI = 7, 105 #ifdef CONFIG_X86_64 106 VCPU_REGS_R8 = 8, 107 VCPU_REGS_R9 = 9, 108 VCPU_REGS_R10 = 10, 109 VCPU_REGS_R11 = 11, 110 VCPU_REGS_R12 = 12, 111 VCPU_REGS_R13 = 13, 112 VCPU_REGS_R14 = 14, 113 VCPU_REGS_R15 = 15, 114 #endif 115 VCPU_REGS_RIP, 116 NR_VCPU_REGS 117 }; 118 119 enum kvm_reg_ex { 120 VCPU_EXREG_PDPTR = NR_VCPU_REGS, 121 VCPU_EXREG_CR3, 122 VCPU_EXREG_RFLAGS, 123 VCPU_EXREG_SEGMENTS, 124 }; 125 126 enum { 127 VCPU_SREG_ES, 128 VCPU_SREG_CS, 129 VCPU_SREG_SS, 130 VCPU_SREG_DS, 131 VCPU_SREG_FS, 132 VCPU_SREG_GS, 133 VCPU_SREG_TR, 134 VCPU_SREG_LDTR, 135 }; 136 137 #include <asm/kvm_emulate.h> 138 139 #define KVM_NR_MEM_OBJS 40 140 141 #define KVM_NR_DB_REGS 4 142 143 #define DR6_BD (1 << 13) 144 #define DR6_BS (1 << 14) 145 #define DR6_RTM (1 << 16) 146 #define DR6_FIXED_1 0xfffe0ff0 147 #define DR6_INIT 0xffff0ff0 148 #define DR6_VOLATILE 0x0001e00f 149 150 #define DR7_BP_EN_MASK 0x000000ff 151 #define DR7_GE (1 << 9) 152 #define DR7_GD (1 << 13) 153 #define DR7_FIXED_1 0x00000400 154 #define DR7_VOLATILE 0xffff2bff 155 156 #define PFERR_PRESENT_BIT 0 157 #define PFERR_WRITE_BIT 1 158 #define PFERR_USER_BIT 2 159 #define PFERR_RSVD_BIT 3 160 #define PFERR_FETCH_BIT 4 161 162 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT) 163 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT) 164 #define PFERR_USER_MASK (1U << PFERR_USER_BIT) 165 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT) 166 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT) 167 168 /* apic attention bits */ 169 #define KVM_APIC_CHECK_VAPIC 0 170 /* 171 * The following bit is set with PV-EOI, unset on EOI. 172 * We detect PV-EOI changes by guest by comparing 173 * this bit with PV-EOI in guest memory. 174 * See the implementation in apic_update_pv_eoi. 175 */ 176 #define KVM_APIC_PV_EOI_PENDING 1 177 178 /* 179 * We don't want allocation failures within the mmu code, so we preallocate 180 * enough memory for a single page fault in a cache. 181 */ 182 struct kvm_mmu_memory_cache { 183 int nobjs; 184 void *objects[KVM_NR_MEM_OBJS]; 185 }; 186 187 union kvm_mmu_page_role { 188 unsigned word; 189 struct { 190 unsigned level:4; 191 unsigned cr4_pae:1; 192 unsigned quadrant:2; 193 unsigned direct:1; 194 unsigned access:3; 195 unsigned invalid:1; 196 unsigned nxe:1; 197 unsigned cr0_wp:1; 198 unsigned smep_andnot_wp:1; 199 unsigned smap_andnot_wp:1; 200 unsigned :8; 201 202 /* 203 * This is left at the top of the word so that 204 * kvm_memslots_for_spte_role can extract it with a 205 * simple shift. While there is room, give it a whole 206 * byte so it is also faster to load it from memory. 207 */ 208 unsigned smm:8; 209 }; 210 }; 211 212 struct kvm_mmu_page { 213 struct list_head link; 214 struct hlist_node hash_link; 215 216 /* 217 * The following two entries are used to key the shadow page in the 218 * hash table. 219 */ 220 gfn_t gfn; 221 union kvm_mmu_page_role role; 222 223 u64 *spt; 224 /* hold the gfn of each spte inside spt */ 225 gfn_t *gfns; 226 bool unsync; 227 int root_count; /* Currently serving as active root */ 228 unsigned int unsync_children; 229 unsigned long parent_ptes; /* Reverse mapping for parent_pte */ 230 231 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */ 232 unsigned long mmu_valid_gen; 233 234 DECLARE_BITMAP(unsync_child_bitmap, 512); 235 236 #ifdef CONFIG_X86_32 237 /* 238 * Used out of the mmu-lock to avoid reading spte values while an 239 * update is in progress; see the comments in __get_spte_lockless(). 240 */ 241 int clear_spte_count; 242 #endif 243 244 /* Number of writes since the last time traversal visited this page. */ 245 int write_flooding_count; 246 }; 247 248 struct kvm_pio_request { 249 unsigned long count; 250 int in; 251 int port; 252 int size; 253 }; 254 255 struct rsvd_bits_validate { 256 u64 rsvd_bits_mask[2][4]; 257 u64 bad_mt_xwr; 258 }; 259 260 /* 261 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level 262 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu 263 * mode. 264 */ 265 struct kvm_mmu { 266 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root); 267 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu); 268 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index); 269 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err, 270 bool prefault); 271 void (*inject_page_fault)(struct kvm_vcpu *vcpu, 272 struct x86_exception *fault); 273 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access, 274 struct x86_exception *exception); 275 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 276 struct x86_exception *exception); 277 int (*sync_page)(struct kvm_vcpu *vcpu, 278 struct kvm_mmu_page *sp); 279 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva); 280 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, 281 u64 *spte, const void *pte); 282 hpa_t root_hpa; 283 int root_level; 284 int shadow_root_level; 285 union kvm_mmu_page_role base_role; 286 bool direct_map; 287 288 /* 289 * Bitmap; bit set = permission fault 290 * Byte index: page fault error code [4:1] 291 * Bit index: pte permissions in ACC_* format 292 */ 293 u8 permissions[16]; 294 295 u64 *pae_root; 296 u64 *lm_root; 297 298 /* 299 * check zero bits on shadow page table entries, these 300 * bits include not only hardware reserved bits but also 301 * the bits spte never used. 302 */ 303 struct rsvd_bits_validate shadow_zero_check; 304 305 struct rsvd_bits_validate guest_rsvd_check; 306 307 /* 308 * Bitmap: bit set = last pte in walk 309 * index[0:1]: level (zero-based) 310 * index[2]: pte.ps 311 */ 312 u8 last_pte_bitmap; 313 314 bool nx; 315 316 u64 pdptrs[4]; /* pae */ 317 }; 318 319 enum pmc_type { 320 KVM_PMC_GP = 0, 321 KVM_PMC_FIXED, 322 }; 323 324 struct kvm_pmc { 325 enum pmc_type type; 326 u8 idx; 327 u64 counter; 328 u64 eventsel; 329 struct perf_event *perf_event; 330 struct kvm_vcpu *vcpu; 331 }; 332 333 struct kvm_pmu { 334 unsigned nr_arch_gp_counters; 335 unsigned nr_arch_fixed_counters; 336 unsigned available_event_types; 337 u64 fixed_ctr_ctrl; 338 u64 global_ctrl; 339 u64 global_status; 340 u64 global_ovf_ctrl; 341 u64 counter_bitmask[2]; 342 u64 global_ctrl_mask; 343 u64 reserved_bits; 344 u8 version; 345 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC]; 346 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED]; 347 struct irq_work irq_work; 348 u64 reprogram_pmi; 349 }; 350 351 struct kvm_pmu_ops; 352 353 enum { 354 KVM_DEBUGREG_BP_ENABLED = 1, 355 KVM_DEBUGREG_WONT_EXIT = 2, 356 KVM_DEBUGREG_RELOAD = 4, 357 }; 358 359 struct kvm_mtrr_range { 360 u64 base; 361 u64 mask; 362 struct list_head node; 363 }; 364 365 struct kvm_mtrr { 366 struct kvm_mtrr_range var_ranges[KVM_NR_VAR_MTRR]; 367 mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION]; 368 u64 deftype; 369 370 struct list_head head; 371 }; 372 373 /* Hyper-V per vcpu emulation context */ 374 struct kvm_vcpu_hv { 375 u64 hv_vapic; 376 }; 377 378 struct kvm_vcpu_arch { 379 /* 380 * rip and regs accesses must go through 381 * kvm_{register,rip}_{read,write} functions. 382 */ 383 unsigned long regs[NR_VCPU_REGS]; 384 u32 regs_avail; 385 u32 regs_dirty; 386 387 unsigned long cr0; 388 unsigned long cr0_guest_owned_bits; 389 unsigned long cr2; 390 unsigned long cr3; 391 unsigned long cr4; 392 unsigned long cr4_guest_owned_bits; 393 unsigned long cr8; 394 u32 hflags; 395 u64 efer; 396 u64 apic_base; 397 struct kvm_lapic *apic; /* kernel irqchip context */ 398 unsigned long apic_attention; 399 int32_t apic_arb_prio; 400 int mp_state; 401 u64 ia32_misc_enable_msr; 402 u64 smbase; 403 bool tpr_access_reporting; 404 u64 ia32_xss; 405 406 /* 407 * Paging state of the vcpu 408 * 409 * If the vcpu runs in guest mode with two level paging this still saves 410 * the paging mode of the l1 guest. This context is always used to 411 * handle faults. 412 */ 413 struct kvm_mmu mmu; 414 415 /* 416 * Paging state of an L2 guest (used for nested npt) 417 * 418 * This context will save all necessary information to walk page tables 419 * of the an L2 guest. This context is only initialized for page table 420 * walking and not for faulting since we never handle l2 page faults on 421 * the host. 422 */ 423 struct kvm_mmu nested_mmu; 424 425 /* 426 * Pointer to the mmu context currently used for 427 * gva_to_gpa translations. 428 */ 429 struct kvm_mmu *walk_mmu; 430 431 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache; 432 struct kvm_mmu_memory_cache mmu_page_cache; 433 struct kvm_mmu_memory_cache mmu_page_header_cache; 434 435 struct fpu guest_fpu; 436 bool eager_fpu; 437 u64 xcr0; 438 u64 guest_supported_xcr0; 439 u32 guest_xstate_size; 440 441 struct kvm_pio_request pio; 442 void *pio_data; 443 444 u8 event_exit_inst_len; 445 446 struct kvm_queued_exception { 447 bool pending; 448 bool has_error_code; 449 bool reinject; 450 u8 nr; 451 u32 error_code; 452 } exception; 453 454 struct kvm_queued_interrupt { 455 bool pending; 456 bool soft; 457 u8 nr; 458 } interrupt; 459 460 int halt_request; /* real mode on Intel only */ 461 462 int cpuid_nent; 463 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; 464 465 int maxphyaddr; 466 467 /* emulate context */ 468 469 struct x86_emulate_ctxt emulate_ctxt; 470 bool emulate_regs_need_sync_to_vcpu; 471 bool emulate_regs_need_sync_from_vcpu; 472 int (*complete_userspace_io)(struct kvm_vcpu *vcpu); 473 474 gpa_t time; 475 struct pvclock_vcpu_time_info hv_clock; 476 unsigned int hw_tsc_khz; 477 struct gfn_to_hva_cache pv_time; 478 bool pv_time_enabled; 479 /* set guest stopped flag in pvclock flags field */ 480 bool pvclock_set_guest_stopped_request; 481 482 struct { 483 u64 msr_val; 484 u64 last_steal; 485 u64 accum_steal; 486 struct gfn_to_hva_cache stime; 487 struct kvm_steal_time steal; 488 } st; 489 490 u64 last_guest_tsc; 491 u64 last_host_tsc; 492 u64 tsc_offset_adjustment; 493 u64 this_tsc_nsec; 494 u64 this_tsc_write; 495 u64 this_tsc_generation; 496 bool tsc_catchup; 497 bool tsc_always_catchup; 498 s8 virtual_tsc_shift; 499 u32 virtual_tsc_mult; 500 u32 virtual_tsc_khz; 501 s64 ia32_tsc_adjust_msr; 502 503 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */ 504 unsigned nmi_pending; /* NMI queued after currently running handler */ 505 bool nmi_injected; /* Trying to inject an NMI this entry */ 506 bool smi_pending; /* SMI queued after currently running handler */ 507 508 struct kvm_mtrr mtrr_state; 509 u64 pat; 510 511 unsigned switch_db_regs; 512 unsigned long db[KVM_NR_DB_REGS]; 513 unsigned long dr6; 514 unsigned long dr7; 515 unsigned long eff_db[KVM_NR_DB_REGS]; 516 unsigned long guest_debug_dr7; 517 518 u64 mcg_cap; 519 u64 mcg_status; 520 u64 mcg_ctl; 521 u64 *mce_banks; 522 523 /* Cache MMIO info */ 524 u64 mmio_gva; 525 unsigned access; 526 gfn_t mmio_gfn; 527 u64 mmio_gen; 528 529 struct kvm_pmu pmu; 530 531 /* used for guest single stepping over the given code position */ 532 unsigned long singlestep_rip; 533 534 struct kvm_vcpu_hv hyperv; 535 536 cpumask_var_t wbinvd_dirty_mask; 537 538 unsigned long last_retry_eip; 539 unsigned long last_retry_addr; 540 541 struct { 542 bool halted; 543 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)]; 544 struct gfn_to_hva_cache data; 545 u64 msr_val; 546 u32 id; 547 bool send_user_only; 548 } apf; 549 550 /* OSVW MSRs (AMD only) */ 551 struct { 552 u64 length; 553 u64 status; 554 } osvw; 555 556 struct { 557 u64 msr_val; 558 struct gfn_to_hva_cache data; 559 } pv_eoi; 560 561 /* 562 * Indicate whether the access faults on its page table in guest 563 * which is set when fix page fault and used to detect unhandeable 564 * instruction. 565 */ 566 bool write_fault_to_shadow_pgtable; 567 568 /* set at EPT violation at this point */ 569 unsigned long exit_qualification; 570 571 /* pv related host specific info */ 572 struct { 573 bool pv_unhalted; 574 } pv; 575 }; 576 577 struct kvm_lpage_info { 578 int write_count; 579 }; 580 581 struct kvm_arch_memory_slot { 582 unsigned long *rmap[KVM_NR_PAGE_SIZES]; 583 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; 584 }; 585 586 /* 587 * We use as the mode the number of bits allocated in the LDR for the 588 * logical processor ID. It happens that these are all powers of two. 589 * This makes it is very easy to detect cases where the APICs are 590 * configured for multiple modes; in that case, we cannot use the map and 591 * hence cannot use kvm_irq_delivery_to_apic_fast either. 592 */ 593 #define KVM_APIC_MODE_XAPIC_CLUSTER 4 594 #define KVM_APIC_MODE_XAPIC_FLAT 8 595 #define KVM_APIC_MODE_X2APIC 16 596 597 struct kvm_apic_map { 598 struct rcu_head rcu; 599 u8 mode; 600 struct kvm_lapic *phys_map[256]; 601 /* first index is cluster id second is cpu id in a cluster */ 602 struct kvm_lapic *logical_map[16][16]; 603 }; 604 605 /* Hyper-V emulation context */ 606 struct kvm_hv { 607 u64 hv_guest_os_id; 608 u64 hv_hypercall; 609 u64 hv_tsc_page; 610 611 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */ 612 u64 hv_crash_param[HV_X64_MSR_CRASH_PARAMS]; 613 u64 hv_crash_ctl; 614 }; 615 616 struct kvm_arch { 617 unsigned int n_used_mmu_pages; 618 unsigned int n_requested_mmu_pages; 619 unsigned int n_max_mmu_pages; 620 unsigned int indirect_shadow_pages; 621 unsigned long mmu_valid_gen; 622 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; 623 /* 624 * Hash table of struct kvm_mmu_page. 625 */ 626 struct list_head active_mmu_pages; 627 struct list_head zapped_obsolete_pages; 628 629 struct list_head assigned_dev_head; 630 struct iommu_domain *iommu_domain; 631 bool iommu_noncoherent; 632 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA 633 atomic_t noncoherent_dma_count; 634 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE 635 atomic_t assigned_device_count; 636 struct kvm_pic *vpic; 637 struct kvm_ioapic *vioapic; 638 struct kvm_pit *vpit; 639 atomic_t vapics_in_nmi_mode; 640 struct mutex apic_map_lock; 641 struct kvm_apic_map *apic_map; 642 643 unsigned int tss_addr; 644 bool apic_access_page_done; 645 646 gpa_t wall_clock; 647 648 bool ept_identity_pagetable_done; 649 gpa_t ept_identity_map_addr; 650 651 unsigned long irq_sources_bitmap; 652 s64 kvmclock_offset; 653 raw_spinlock_t tsc_write_lock; 654 u64 last_tsc_nsec; 655 u64 last_tsc_write; 656 u32 last_tsc_khz; 657 u64 cur_tsc_nsec; 658 u64 cur_tsc_write; 659 u64 cur_tsc_offset; 660 u64 cur_tsc_generation; 661 int nr_vcpus_matched_tsc; 662 663 spinlock_t pvclock_gtod_sync_lock; 664 bool use_master_clock; 665 u64 master_kernel_ns; 666 cycle_t master_cycle_now; 667 struct delayed_work kvmclock_update_work; 668 struct delayed_work kvmclock_sync_work; 669 670 struct kvm_xen_hvm_config xen_hvm_config; 671 672 /* reads protected by irq_srcu, writes by irq_lock */ 673 struct hlist_head mask_notifier_list; 674 675 struct kvm_hv hyperv; 676 677 #ifdef CONFIG_KVM_MMU_AUDIT 678 int audit_point; 679 #endif 680 681 bool boot_vcpu_runs_old_kvmclock; 682 u32 bsp_vcpu_id; 683 684 u64 disabled_quirks; 685 }; 686 687 struct kvm_vm_stat { 688 u32 mmu_shadow_zapped; 689 u32 mmu_pte_write; 690 u32 mmu_pte_updated; 691 u32 mmu_pde_zapped; 692 u32 mmu_flooded; 693 u32 mmu_recycled; 694 u32 mmu_cache_miss; 695 u32 mmu_unsync; 696 u32 remote_tlb_flush; 697 u32 lpages; 698 }; 699 700 struct kvm_vcpu_stat { 701 u32 pf_fixed; 702 u32 pf_guest; 703 u32 tlb_flush; 704 u32 invlpg; 705 706 u32 exits; 707 u32 io_exits; 708 u32 mmio_exits; 709 u32 signal_exits; 710 u32 irq_window_exits; 711 u32 nmi_window_exits; 712 u32 halt_exits; 713 u32 halt_successful_poll; 714 u32 halt_attempted_poll; 715 u32 halt_wakeup; 716 u32 request_irq_exits; 717 u32 irq_exits; 718 u32 host_state_reload; 719 u32 efer_reload; 720 u32 fpu_reload; 721 u32 insn_emulation; 722 u32 insn_emulation_fail; 723 u32 hypercalls; 724 u32 irq_injections; 725 u32 nmi_injections; 726 }; 727 728 struct x86_instruction_info; 729 730 struct msr_data { 731 bool host_initiated; 732 u32 index; 733 u64 data; 734 }; 735 736 struct kvm_lapic_irq { 737 u32 vector; 738 u16 delivery_mode; 739 u16 dest_mode; 740 bool level; 741 u16 trig_mode; 742 u32 shorthand; 743 u32 dest_id; 744 bool msi_redir_hint; 745 }; 746 747 struct kvm_x86_ops { 748 int (*cpu_has_kvm_support)(void); /* __init */ 749 int (*disabled_by_bios)(void); /* __init */ 750 int (*hardware_enable)(void); 751 void (*hardware_disable)(void); 752 void (*check_processor_compatibility)(void *rtn); 753 int (*hardware_setup)(void); /* __init */ 754 void (*hardware_unsetup)(void); /* __exit */ 755 bool (*cpu_has_accelerated_tpr)(void); 756 bool (*cpu_has_high_real_mode_segbase)(void); 757 void (*cpuid_update)(struct kvm_vcpu *vcpu); 758 759 /* Create, but do not attach this VCPU */ 760 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); 761 void (*vcpu_free)(struct kvm_vcpu *vcpu); 762 void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event); 763 764 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); 765 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 766 void (*vcpu_put)(struct kvm_vcpu *vcpu); 767 768 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu); 769 int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr); 770 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr); 771 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); 772 void (*get_segment)(struct kvm_vcpu *vcpu, 773 struct kvm_segment *var, int seg); 774 int (*get_cpl)(struct kvm_vcpu *vcpu); 775 void (*set_segment)(struct kvm_vcpu *vcpu, 776 struct kvm_segment *var, int seg); 777 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); 778 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu); 779 void (*decache_cr3)(struct kvm_vcpu *vcpu); 780 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); 781 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); 782 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); 783 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); 784 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); 785 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 786 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 787 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 788 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 789 u64 (*get_dr6)(struct kvm_vcpu *vcpu); 790 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value); 791 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu); 792 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value); 793 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); 794 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); 795 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); 796 void (*fpu_activate)(struct kvm_vcpu *vcpu); 797 void (*fpu_deactivate)(struct kvm_vcpu *vcpu); 798 799 void (*tlb_flush)(struct kvm_vcpu *vcpu); 800 801 void (*run)(struct kvm_vcpu *vcpu); 802 int (*handle_exit)(struct kvm_vcpu *vcpu); 803 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); 804 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask); 805 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu); 806 void (*patch_hypercall)(struct kvm_vcpu *vcpu, 807 unsigned char *hypercall_addr); 808 void (*set_irq)(struct kvm_vcpu *vcpu); 809 void (*set_nmi)(struct kvm_vcpu *vcpu); 810 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, 811 bool has_error_code, u32 error_code, 812 bool reinject); 813 void (*cancel_injection)(struct kvm_vcpu *vcpu); 814 int (*interrupt_allowed)(struct kvm_vcpu *vcpu); 815 int (*nmi_allowed)(struct kvm_vcpu *vcpu); 816 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu); 817 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked); 818 void (*enable_nmi_window)(struct kvm_vcpu *vcpu); 819 void (*enable_irq_window)(struct kvm_vcpu *vcpu); 820 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr); 821 int (*vm_has_apicv)(struct kvm *kvm); 822 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr); 823 void (*hwapic_isr_update)(struct kvm *kvm, int isr); 824 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap); 825 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set); 826 void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa); 827 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector); 828 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu); 829 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); 830 int (*get_tdp_level)(void); 831 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio); 832 int (*get_lpage_level)(void); 833 bool (*rdtscp_supported)(void); 834 bool (*invpcid_supported)(void); 835 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host); 836 837 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); 838 839 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry); 840 841 bool (*has_wbinvd_exit)(void); 842 843 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale); 844 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu); 845 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); 846 847 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc); 848 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc); 849 850 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2); 851 852 int (*check_intercept)(struct kvm_vcpu *vcpu, 853 struct x86_instruction_info *info, 854 enum x86_intercept_stage stage); 855 void (*handle_external_intr)(struct kvm_vcpu *vcpu); 856 bool (*mpx_supported)(void); 857 bool (*xsaves_supported)(void); 858 859 int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr); 860 861 void (*sched_in)(struct kvm_vcpu *kvm, int cpu); 862 863 /* 864 * Arch-specific dirty logging hooks. These hooks are only supposed to 865 * be valid if the specific arch has hardware-accelerated dirty logging 866 * mechanism. Currently only for PML on VMX. 867 * 868 * - slot_enable_log_dirty: 869 * called when enabling log dirty mode for the slot. 870 * - slot_disable_log_dirty: 871 * called when disabling log dirty mode for the slot. 872 * also called when slot is created with log dirty disabled. 873 * - flush_log_dirty: 874 * called before reporting dirty_bitmap to userspace. 875 * - enable_log_dirty_pt_masked: 876 * called when reenabling log dirty for the GFNs in the mask after 877 * corresponding bits are cleared in slot->dirty_bitmap. 878 */ 879 void (*slot_enable_log_dirty)(struct kvm *kvm, 880 struct kvm_memory_slot *slot); 881 void (*slot_disable_log_dirty)(struct kvm *kvm, 882 struct kvm_memory_slot *slot); 883 void (*flush_log_dirty)(struct kvm *kvm); 884 void (*enable_log_dirty_pt_masked)(struct kvm *kvm, 885 struct kvm_memory_slot *slot, 886 gfn_t offset, unsigned long mask); 887 /* pmu operations of sub-arch */ 888 const struct kvm_pmu_ops *pmu_ops; 889 }; 890 891 struct kvm_arch_async_pf { 892 u32 token; 893 gfn_t gfn; 894 unsigned long cr3; 895 bool direct_map; 896 }; 897 898 extern struct kvm_x86_ops *kvm_x86_ops; 899 900 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu, 901 s64 adjustment) 902 { 903 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false); 904 } 905 906 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment) 907 { 908 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true); 909 } 910 911 int kvm_mmu_module_init(void); 912 void kvm_mmu_module_exit(void); 913 914 void kvm_mmu_destroy(struct kvm_vcpu *vcpu); 915 int kvm_mmu_create(struct kvm_vcpu *vcpu); 916 void kvm_mmu_setup(struct kvm_vcpu *vcpu); 917 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, 918 u64 dirty_mask, u64 nx_mask, u64 x_mask); 919 920 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu); 921 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, 922 struct kvm_memory_slot *memslot); 923 void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm, 924 const struct kvm_memory_slot *memslot); 925 void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm, 926 struct kvm_memory_slot *memslot); 927 void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm, 928 struct kvm_memory_slot *memslot); 929 void kvm_mmu_slot_set_dirty(struct kvm *kvm, 930 struct kvm_memory_slot *memslot); 931 void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm, 932 struct kvm_memory_slot *slot, 933 gfn_t gfn_offset, unsigned long mask); 934 void kvm_mmu_zap_all(struct kvm *kvm); 935 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, struct kvm_memslots *slots); 936 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); 937 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); 938 939 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3); 940 941 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, 942 const void *val, int bytes); 943 944 struct kvm_irq_mask_notifier { 945 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); 946 int irq; 947 struct hlist_node link; 948 }; 949 950 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, 951 struct kvm_irq_mask_notifier *kimn); 952 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, 953 struct kvm_irq_mask_notifier *kimn); 954 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, 955 bool mask); 956 957 extern bool tdp_enabled; 958 959 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu); 960 961 /* control of guest tsc rate supported? */ 962 extern bool kvm_has_tsc_control; 963 /* minimum supported tsc_khz for guests */ 964 extern u32 kvm_min_guest_tsc_khz; 965 /* maximum supported tsc_khz for guests */ 966 extern u32 kvm_max_guest_tsc_khz; 967 968 enum emulation_result { 969 EMULATE_DONE, /* no further processing */ 970 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */ 971 EMULATE_FAIL, /* can't emulate this instruction */ 972 }; 973 974 #define EMULTYPE_NO_DECODE (1 << 0) 975 #define EMULTYPE_TRAP_UD (1 << 1) 976 #define EMULTYPE_SKIP (1 << 2) 977 #define EMULTYPE_RETRY (1 << 3) 978 #define EMULTYPE_NO_REEXECUTE (1 << 4) 979 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2, 980 int emulation_type, void *insn, int insn_len); 981 982 static inline int emulate_instruction(struct kvm_vcpu *vcpu, 983 int emulation_type) 984 { 985 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0); 986 } 987 988 void kvm_enable_efer_bits(u64); 989 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer); 990 int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr); 991 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr); 992 993 struct x86_emulate_ctxt; 994 995 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port); 996 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); 997 int kvm_emulate_halt(struct kvm_vcpu *vcpu); 998 int kvm_vcpu_halt(struct kvm_vcpu *vcpu); 999 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu); 1000 1001 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); 1002 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg); 1003 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector); 1004 1005 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index, 1006 int reason, bool has_error_code, u32 error_code); 1007 1008 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); 1009 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); 1010 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); 1011 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); 1012 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val); 1013 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val); 1014 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); 1015 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); 1016 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); 1017 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr); 1018 1019 int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr); 1020 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr); 1021 1022 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu); 1023 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags); 1024 bool kvm_rdpmc(struct kvm_vcpu *vcpu); 1025 1026 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); 1027 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); 1028 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr); 1029 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); 1030 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); 1031 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, 1032 gfn_t gfn, void *data, int offset, int len, 1033 u32 access); 1034 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl); 1035 bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr); 1036 1037 static inline int __kvm_irq_line_state(unsigned long *irq_state, 1038 int irq_source_id, int level) 1039 { 1040 /* Logical OR for level trig interrupt */ 1041 if (level) 1042 __set_bit(irq_source_id, irq_state); 1043 else 1044 __clear_bit(irq_source_id, irq_state); 1045 1046 return !!(*irq_state); 1047 } 1048 1049 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level); 1050 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id); 1051 1052 void kvm_inject_nmi(struct kvm_vcpu *vcpu); 1053 1054 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, 1055 const u8 *new, int bytes); 1056 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn); 1057 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); 1058 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); 1059 int kvm_mmu_load(struct kvm_vcpu *vcpu); 1060 void kvm_mmu_unload(struct kvm_vcpu *vcpu); 1061 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); 1062 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 1063 struct x86_exception *exception); 1064 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, 1065 struct x86_exception *exception); 1066 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, 1067 struct x86_exception *exception); 1068 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, 1069 struct x86_exception *exception); 1070 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, 1071 struct x86_exception *exception); 1072 1073 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); 1074 1075 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code, 1076 void *insn, int insn_len); 1077 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); 1078 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu); 1079 1080 void kvm_enable_tdp(void); 1081 void kvm_disable_tdp(void); 1082 1083 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 1084 struct x86_exception *exception) 1085 { 1086 return gpa; 1087 } 1088 1089 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) 1090 { 1091 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); 1092 1093 return (struct kvm_mmu_page *)page_private(page); 1094 } 1095 1096 static inline u16 kvm_read_ldt(void) 1097 { 1098 u16 ldt; 1099 asm("sldt %0" : "=g"(ldt)); 1100 return ldt; 1101 } 1102 1103 static inline void kvm_load_ldt(u16 sel) 1104 { 1105 asm("lldt %0" : : "rm"(sel)); 1106 } 1107 1108 #ifdef CONFIG_X86_64 1109 static inline unsigned long read_msr(unsigned long msr) 1110 { 1111 u64 value; 1112 1113 rdmsrl(msr, value); 1114 return value; 1115 } 1116 #endif 1117 1118 static inline u32 get_rdx_init_val(void) 1119 { 1120 return 0x600; /* P6 family */ 1121 } 1122 1123 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) 1124 { 1125 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); 1126 } 1127 1128 static inline u64 get_canonical(u64 la) 1129 { 1130 return ((int64_t)la << 16) >> 16; 1131 } 1132 1133 static inline bool is_noncanonical_address(u64 la) 1134 { 1135 #ifdef CONFIG_X86_64 1136 return get_canonical(la) != la; 1137 #else 1138 return false; 1139 #endif 1140 } 1141 1142 #define TSS_IOPB_BASE_OFFSET 0x66 1143 #define TSS_BASE_SIZE 0x68 1144 #define TSS_IOPB_SIZE (65536 / 8) 1145 #define TSS_REDIRECTION_SIZE (256 / 8) 1146 #define RMODE_TSS_SIZE \ 1147 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) 1148 1149 enum { 1150 TASK_SWITCH_CALL = 0, 1151 TASK_SWITCH_IRET = 1, 1152 TASK_SWITCH_JMP = 2, 1153 TASK_SWITCH_GATE = 3, 1154 }; 1155 1156 #define HF_GIF_MASK (1 << 0) 1157 #define HF_HIF_MASK (1 << 1) 1158 #define HF_VINTR_MASK (1 << 2) 1159 #define HF_NMI_MASK (1 << 3) 1160 #define HF_IRET_MASK (1 << 4) 1161 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ 1162 #define HF_SMM_MASK (1 << 6) 1163 #define HF_SMM_INSIDE_NMI_MASK (1 << 7) 1164 1165 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE 1166 #define KVM_ADDRESS_SPACE_NUM 2 1167 1168 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0) 1169 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm) 1170 1171 /* 1172 * Hardware virtualization extension instructions may fault if a 1173 * reboot turns off virtualization while processes are running. 1174 * Trap the fault and ignore the instruction if that happens. 1175 */ 1176 asmlinkage void kvm_spurious_fault(void); 1177 1178 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \ 1179 "666: " insn "\n\t" \ 1180 "668: \n\t" \ 1181 ".pushsection .fixup, \"ax\" \n" \ 1182 "667: \n\t" \ 1183 cleanup_insn "\n\t" \ 1184 "cmpb $0, kvm_rebooting \n\t" \ 1185 "jne 668b \n\t" \ 1186 __ASM_SIZE(push) " $666b \n\t" \ 1187 "call kvm_spurious_fault \n\t" \ 1188 ".popsection \n\t" \ 1189 _ASM_EXTABLE(666b, 667b) 1190 1191 #define __kvm_handle_fault_on_reboot(insn) \ 1192 ____kvm_handle_fault_on_reboot(insn, "") 1193 1194 #define KVM_ARCH_WANT_MMU_NOTIFIER 1195 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); 1196 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); 1197 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); 1198 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); 1199 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); 1200 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v); 1201 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); 1202 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu); 1203 int kvm_cpu_get_interrupt(struct kvm_vcpu *v); 1204 void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event); 1205 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu); 1206 void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, 1207 unsigned long address); 1208 1209 void kvm_define_shared_msr(unsigned index, u32 msr); 1210 int kvm_set_shared_msr(unsigned index, u64 val, u64 mask); 1211 1212 unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu); 1213 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); 1214 1215 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 1216 struct kvm_async_pf *work); 1217 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 1218 struct kvm_async_pf *work); 1219 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 1220 struct kvm_async_pf *work); 1221 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 1222 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn); 1223 1224 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); 1225 1226 int kvm_is_in_guest(void); 1227 1228 int __x86_set_memory_region(struct kvm *kvm, 1229 const struct kvm_userspace_memory_region *mem); 1230 int x86_set_memory_region(struct kvm *kvm, 1231 const struct kvm_userspace_memory_region *mem); 1232 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu); 1233 bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu); 1234 1235 #endif /* _ASM_X86_KVM_HOST_H */ 1236