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 #define KVM_HALT_POLL_NS_DEFAULT 500000 44 45 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS 46 47 #define CR0_RESERVED_BITS \ 48 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \ 49 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \ 50 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) 51 52 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL 53 #define CR3_PCID_INVD BIT_64(63) 54 #define CR4_RESERVED_BITS \ 55 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ 56 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ 57 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \ 58 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \ 59 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE | X86_CR4_SMAP)) 60 61 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) 62 63 64 65 #define INVALID_PAGE (~(hpa_t)0) 66 #define VALID_PAGE(x) ((x) != INVALID_PAGE) 67 68 #define UNMAPPED_GVA (~(gpa_t)0) 69 70 /* KVM Hugepage definitions for x86 */ 71 #define KVM_NR_PAGE_SIZES 3 72 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9) 73 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x)) 74 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x)) 75 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) 76 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) 77 78 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) 79 { 80 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ 81 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - 82 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); 83 } 84 85 #define KVM_PERMILLE_MMU_PAGES 20 86 #define KVM_MIN_ALLOC_MMU_PAGES 64 87 #define KVM_MMU_HASH_SHIFT 10 88 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) 89 #define KVM_MIN_FREE_MMU_PAGES 5 90 #define KVM_REFILL_PAGES 25 91 #define KVM_MAX_CPUID_ENTRIES 80 92 #define KVM_NR_FIXED_MTRR_REGION 88 93 #define KVM_NR_VAR_MTRR 8 94 95 #define ASYNC_PF_PER_VCPU 64 96 97 enum kvm_reg { 98 VCPU_REGS_RAX = 0, 99 VCPU_REGS_RCX = 1, 100 VCPU_REGS_RDX = 2, 101 VCPU_REGS_RBX = 3, 102 VCPU_REGS_RSP = 4, 103 VCPU_REGS_RBP = 5, 104 VCPU_REGS_RSI = 6, 105 VCPU_REGS_RDI = 7, 106 #ifdef CONFIG_X86_64 107 VCPU_REGS_R8 = 8, 108 VCPU_REGS_R9 = 9, 109 VCPU_REGS_R10 = 10, 110 VCPU_REGS_R11 = 11, 111 VCPU_REGS_R12 = 12, 112 VCPU_REGS_R13 = 13, 113 VCPU_REGS_R14 = 14, 114 VCPU_REGS_R15 = 15, 115 #endif 116 VCPU_REGS_RIP, 117 NR_VCPU_REGS 118 }; 119 120 enum kvm_reg_ex { 121 VCPU_EXREG_PDPTR = NR_VCPU_REGS, 122 VCPU_EXREG_CR3, 123 VCPU_EXREG_RFLAGS, 124 VCPU_EXREG_SEGMENTS, 125 }; 126 127 enum { 128 VCPU_SREG_ES, 129 VCPU_SREG_CS, 130 VCPU_SREG_SS, 131 VCPU_SREG_DS, 132 VCPU_SREG_FS, 133 VCPU_SREG_GS, 134 VCPU_SREG_TR, 135 VCPU_SREG_LDTR, 136 }; 137 138 #include <asm/kvm_emulate.h> 139 140 #define KVM_NR_MEM_OBJS 40 141 142 #define KVM_NR_DB_REGS 4 143 144 #define DR6_BD (1 << 13) 145 #define DR6_BS (1 << 14) 146 #define DR6_RTM (1 << 16) 147 #define DR6_FIXED_1 0xfffe0ff0 148 #define DR6_INIT 0xffff0ff0 149 #define DR6_VOLATILE 0x0001e00f 150 151 #define DR7_BP_EN_MASK 0x000000ff 152 #define DR7_GE (1 << 9) 153 #define DR7_GD (1 << 13) 154 #define DR7_FIXED_1 0x00000400 155 #define DR7_VOLATILE 0xffff2bff 156 157 #define PFERR_PRESENT_BIT 0 158 #define PFERR_WRITE_BIT 1 159 #define PFERR_USER_BIT 2 160 #define PFERR_RSVD_BIT 3 161 #define PFERR_FETCH_BIT 4 162 163 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT) 164 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT) 165 #define PFERR_USER_MASK (1U << PFERR_USER_BIT) 166 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT) 167 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT) 168 169 /* apic attention bits */ 170 #define KVM_APIC_CHECK_VAPIC 0 171 /* 172 * The following bit is set with PV-EOI, unset on EOI. 173 * We detect PV-EOI changes by guest by comparing 174 * this bit with PV-EOI in guest memory. 175 * See the implementation in apic_update_pv_eoi. 176 */ 177 #define KVM_APIC_PV_EOI_PENDING 1 178 179 /* 180 * We don't want allocation failures within the mmu code, so we preallocate 181 * enough memory for a single page fault in a cache. 182 */ 183 struct kvm_mmu_memory_cache { 184 int nobjs; 185 void *objects[KVM_NR_MEM_OBJS]; 186 }; 187 188 union kvm_mmu_page_role { 189 unsigned word; 190 struct { 191 unsigned level:4; 192 unsigned cr4_pae:1; 193 unsigned quadrant:2; 194 unsigned direct:1; 195 unsigned access:3; 196 unsigned invalid:1; 197 unsigned nxe:1; 198 unsigned cr0_wp:1; 199 unsigned smep_andnot_wp:1; 200 unsigned smap_andnot_wp:1; 201 unsigned :8; 202 203 /* 204 * This is left at the top of the word so that 205 * kvm_memslots_for_spte_role can extract it with a 206 * simple shift. While there is room, give it a whole 207 * byte so it is also faster to load it from memory. 208 */ 209 unsigned smm:8; 210 }; 211 }; 212 213 struct kvm_mmu_page { 214 struct list_head link; 215 struct hlist_node hash_link; 216 217 /* 218 * The following two entries are used to key the shadow page in the 219 * hash table. 220 */ 221 gfn_t gfn; 222 union kvm_mmu_page_role role; 223 224 u64 *spt; 225 /* hold the gfn of each spte inside spt */ 226 gfn_t *gfns; 227 bool unsync; 228 int root_count; /* Currently serving as active root */ 229 unsigned int unsync_children; 230 unsigned long parent_ptes; /* Reverse mapping for parent_pte */ 231 232 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */ 233 unsigned long mmu_valid_gen; 234 235 DECLARE_BITMAP(unsync_child_bitmap, 512); 236 237 #ifdef CONFIG_X86_32 238 /* 239 * Used out of the mmu-lock to avoid reading spte values while an 240 * update is in progress; see the comments in __get_spte_lockless(). 241 */ 242 int clear_spte_count; 243 #endif 244 245 /* Number of writes since the last time traversal visited this page. */ 246 int write_flooding_count; 247 }; 248 249 struct kvm_pio_request { 250 unsigned long count; 251 int in; 252 int port; 253 int size; 254 }; 255 256 struct rsvd_bits_validate { 257 u64 rsvd_bits_mask[2][4]; 258 u64 bad_mt_xwr; 259 }; 260 261 /* 262 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level 263 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu 264 * mode. 265 */ 266 struct kvm_mmu { 267 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root); 268 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu); 269 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index); 270 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err, 271 bool prefault); 272 void (*inject_page_fault)(struct kvm_vcpu *vcpu, 273 struct x86_exception *fault); 274 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access, 275 struct x86_exception *exception); 276 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 277 struct x86_exception *exception); 278 int (*sync_page)(struct kvm_vcpu *vcpu, 279 struct kvm_mmu_page *sp); 280 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva); 281 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, 282 u64 *spte, const void *pte); 283 hpa_t root_hpa; 284 int root_level; 285 int shadow_root_level; 286 union kvm_mmu_page_role base_role; 287 bool direct_map; 288 289 /* 290 * Bitmap; bit set = permission fault 291 * Byte index: page fault error code [4:1] 292 * Bit index: pte permissions in ACC_* format 293 */ 294 u8 permissions[16]; 295 296 u64 *pae_root; 297 u64 *lm_root; 298 299 /* 300 * check zero bits on shadow page table entries, these 301 * bits include not only hardware reserved bits but also 302 * the bits spte never used. 303 */ 304 struct rsvd_bits_validate shadow_zero_check; 305 306 struct rsvd_bits_validate guest_rsvd_check; 307 308 /* 309 * Bitmap: bit set = last pte in walk 310 * index[0:1]: level (zero-based) 311 * index[2]: pte.ps 312 */ 313 u8 last_pte_bitmap; 314 315 bool nx; 316 317 u64 pdptrs[4]; /* pae */ 318 }; 319 320 enum pmc_type { 321 KVM_PMC_GP = 0, 322 KVM_PMC_FIXED, 323 }; 324 325 struct kvm_pmc { 326 enum pmc_type type; 327 u8 idx; 328 u64 counter; 329 u64 eventsel; 330 struct perf_event *perf_event; 331 struct kvm_vcpu *vcpu; 332 }; 333 334 struct kvm_pmu { 335 unsigned nr_arch_gp_counters; 336 unsigned nr_arch_fixed_counters; 337 unsigned available_event_types; 338 u64 fixed_ctr_ctrl; 339 u64 global_ctrl; 340 u64 global_status; 341 u64 global_ovf_ctrl; 342 u64 counter_bitmask[2]; 343 u64 global_ctrl_mask; 344 u64 reserved_bits; 345 u8 version; 346 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC]; 347 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED]; 348 struct irq_work irq_work; 349 u64 reprogram_pmi; 350 }; 351 352 struct kvm_pmu_ops; 353 354 enum { 355 KVM_DEBUGREG_BP_ENABLED = 1, 356 KVM_DEBUGREG_WONT_EXIT = 2, 357 KVM_DEBUGREG_RELOAD = 4, 358 }; 359 360 struct kvm_mtrr_range { 361 u64 base; 362 u64 mask; 363 struct list_head node; 364 }; 365 366 struct kvm_mtrr { 367 struct kvm_mtrr_range var_ranges[KVM_NR_VAR_MTRR]; 368 mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION]; 369 u64 deftype; 370 371 struct list_head head; 372 }; 373 374 /* Hyper-V per vcpu emulation context */ 375 struct kvm_vcpu_hv { 376 u64 hv_vapic; 377 }; 378 379 struct kvm_vcpu_arch { 380 /* 381 * rip and regs accesses must go through 382 * kvm_{register,rip}_{read,write} functions. 383 */ 384 unsigned long regs[NR_VCPU_REGS]; 385 u32 regs_avail; 386 u32 regs_dirty; 387 388 unsigned long cr0; 389 unsigned long cr0_guest_owned_bits; 390 unsigned long cr2; 391 unsigned long cr3; 392 unsigned long cr4; 393 unsigned long cr4_guest_owned_bits; 394 unsigned long cr8; 395 u32 hflags; 396 u64 efer; 397 u64 apic_base; 398 struct kvm_lapic *apic; /* kernel irqchip context */ 399 unsigned long apic_attention; 400 int32_t apic_arb_prio; 401 int mp_state; 402 u64 ia32_misc_enable_msr; 403 u64 smbase; 404 bool tpr_access_reporting; 405 u64 ia32_xss; 406 407 /* 408 * Paging state of the vcpu 409 * 410 * If the vcpu runs in guest mode with two level paging this still saves 411 * the paging mode of the l1 guest. This context is always used to 412 * handle faults. 413 */ 414 struct kvm_mmu mmu; 415 416 /* 417 * Paging state of an L2 guest (used for nested npt) 418 * 419 * This context will save all necessary information to walk page tables 420 * of the an L2 guest. This context is only initialized for page table 421 * walking and not for faulting since we never handle l2 page faults on 422 * the host. 423 */ 424 struct kvm_mmu nested_mmu; 425 426 /* 427 * Pointer to the mmu context currently used for 428 * gva_to_gpa translations. 429 */ 430 struct kvm_mmu *walk_mmu; 431 432 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache; 433 struct kvm_mmu_memory_cache mmu_page_cache; 434 struct kvm_mmu_memory_cache mmu_page_header_cache; 435 436 struct fpu guest_fpu; 437 bool eager_fpu; 438 u64 xcr0; 439 u64 guest_supported_xcr0; 440 u32 guest_xstate_size; 441 442 struct kvm_pio_request pio; 443 void *pio_data; 444 445 u8 event_exit_inst_len; 446 447 struct kvm_queued_exception { 448 bool pending; 449 bool has_error_code; 450 bool reinject; 451 u8 nr; 452 u32 error_code; 453 } exception; 454 455 struct kvm_queued_interrupt { 456 bool pending; 457 bool soft; 458 u8 nr; 459 } interrupt; 460 461 int halt_request; /* real mode on Intel only */ 462 463 int cpuid_nent; 464 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; 465 466 int maxphyaddr; 467 468 /* emulate context */ 469 470 struct x86_emulate_ctxt emulate_ctxt; 471 bool emulate_regs_need_sync_to_vcpu; 472 bool emulate_regs_need_sync_from_vcpu; 473 int (*complete_userspace_io)(struct kvm_vcpu *vcpu); 474 475 gpa_t time; 476 struct pvclock_vcpu_time_info hv_clock; 477 unsigned int hw_tsc_khz; 478 struct gfn_to_hva_cache pv_time; 479 bool pv_time_enabled; 480 /* set guest stopped flag in pvclock flags field */ 481 bool pvclock_set_guest_stopped_request; 482 483 struct { 484 u64 msr_val; 485 u64 last_steal; 486 u64 accum_steal; 487 struct gfn_to_hva_cache stime; 488 struct kvm_steal_time steal; 489 } st; 490 491 u64 last_guest_tsc; 492 u64 last_host_tsc; 493 u64 tsc_offset_adjustment; 494 u64 this_tsc_nsec; 495 u64 this_tsc_write; 496 u64 this_tsc_generation; 497 bool tsc_catchup; 498 bool tsc_always_catchup; 499 s8 virtual_tsc_shift; 500 u32 virtual_tsc_mult; 501 u32 virtual_tsc_khz; 502 s64 ia32_tsc_adjust_msr; 503 504 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */ 505 unsigned nmi_pending; /* NMI queued after currently running handler */ 506 bool nmi_injected; /* Trying to inject an NMI this entry */ 507 bool smi_pending; /* SMI queued after currently running handler */ 508 509 struct kvm_mtrr mtrr_state; 510 u64 pat; 511 512 unsigned switch_db_regs; 513 unsigned long db[KVM_NR_DB_REGS]; 514 unsigned long dr6; 515 unsigned long dr7; 516 unsigned long eff_db[KVM_NR_DB_REGS]; 517 unsigned long guest_debug_dr7; 518 519 u64 mcg_cap; 520 u64 mcg_status; 521 u64 mcg_ctl; 522 u64 *mce_banks; 523 524 /* Cache MMIO info */ 525 u64 mmio_gva; 526 unsigned access; 527 gfn_t mmio_gfn; 528 u64 mmio_gen; 529 530 struct kvm_pmu pmu; 531 532 /* used for guest single stepping over the given code position */ 533 unsigned long singlestep_rip; 534 535 struct kvm_vcpu_hv hyperv; 536 537 cpumask_var_t wbinvd_dirty_mask; 538 539 unsigned long last_retry_eip; 540 unsigned long last_retry_addr; 541 542 struct { 543 bool halted; 544 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)]; 545 struct gfn_to_hva_cache data; 546 u64 msr_val; 547 u32 id; 548 bool send_user_only; 549 } apf; 550 551 /* OSVW MSRs (AMD only) */ 552 struct { 553 u64 length; 554 u64 status; 555 } osvw; 556 557 struct { 558 u64 msr_val; 559 struct gfn_to_hva_cache data; 560 } pv_eoi; 561 562 /* 563 * Indicate whether the access faults on its page table in guest 564 * which is set when fix page fault and used to detect unhandeable 565 * instruction. 566 */ 567 bool write_fault_to_shadow_pgtable; 568 569 /* set at EPT violation at this point */ 570 unsigned long exit_qualification; 571 572 /* pv related host specific info */ 573 struct { 574 bool pv_unhalted; 575 } pv; 576 }; 577 578 struct kvm_lpage_info { 579 int write_count; 580 }; 581 582 struct kvm_arch_memory_slot { 583 unsigned long *rmap[KVM_NR_PAGE_SIZES]; 584 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; 585 }; 586 587 /* 588 * We use as the mode the number of bits allocated in the LDR for the 589 * logical processor ID. It happens that these are all powers of two. 590 * This makes it is very easy to detect cases where the APICs are 591 * configured for multiple modes; in that case, we cannot use the map and 592 * hence cannot use kvm_irq_delivery_to_apic_fast either. 593 */ 594 #define KVM_APIC_MODE_XAPIC_CLUSTER 4 595 #define KVM_APIC_MODE_XAPIC_FLAT 8 596 #define KVM_APIC_MODE_X2APIC 16 597 598 struct kvm_apic_map { 599 struct rcu_head rcu; 600 u8 mode; 601 struct kvm_lapic *phys_map[256]; 602 /* first index is cluster id second is cpu id in a cluster */ 603 struct kvm_lapic *logical_map[16][16]; 604 }; 605 606 /* Hyper-V emulation context */ 607 struct kvm_hv { 608 u64 hv_guest_os_id; 609 u64 hv_hypercall; 610 u64 hv_tsc_page; 611 612 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */ 613 u64 hv_crash_param[HV_X64_MSR_CRASH_PARAMS]; 614 u64 hv_crash_ctl; 615 }; 616 617 struct kvm_arch { 618 unsigned int n_used_mmu_pages; 619 unsigned int n_requested_mmu_pages; 620 unsigned int n_max_mmu_pages; 621 unsigned int indirect_shadow_pages; 622 unsigned long mmu_valid_gen; 623 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; 624 /* 625 * Hash table of struct kvm_mmu_page. 626 */ 627 struct list_head active_mmu_pages; 628 struct list_head zapped_obsolete_pages; 629 630 struct list_head assigned_dev_head; 631 struct iommu_domain *iommu_domain; 632 bool iommu_noncoherent; 633 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA 634 atomic_t noncoherent_dma_count; 635 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE 636 atomic_t assigned_device_count; 637 struct kvm_pic *vpic; 638 struct kvm_ioapic *vioapic; 639 struct kvm_pit *vpit; 640 atomic_t vapics_in_nmi_mode; 641 struct mutex apic_map_lock; 642 struct kvm_apic_map *apic_map; 643 644 unsigned int tss_addr; 645 bool apic_access_page_done; 646 647 gpa_t wall_clock; 648 649 bool ept_identity_pagetable_done; 650 gpa_t ept_identity_map_addr; 651 652 unsigned long irq_sources_bitmap; 653 s64 kvmclock_offset; 654 raw_spinlock_t tsc_write_lock; 655 u64 last_tsc_nsec; 656 u64 last_tsc_write; 657 u32 last_tsc_khz; 658 u64 cur_tsc_nsec; 659 u64 cur_tsc_write; 660 u64 cur_tsc_offset; 661 u64 cur_tsc_generation; 662 int nr_vcpus_matched_tsc; 663 664 spinlock_t pvclock_gtod_sync_lock; 665 bool use_master_clock; 666 u64 master_kernel_ns; 667 cycle_t master_cycle_now; 668 struct delayed_work kvmclock_update_work; 669 struct delayed_work kvmclock_sync_work; 670 671 struct kvm_xen_hvm_config xen_hvm_config; 672 673 /* reads protected by irq_srcu, writes by irq_lock */ 674 struct hlist_head mask_notifier_list; 675 676 struct kvm_hv hyperv; 677 678 #ifdef CONFIG_KVM_MMU_AUDIT 679 int audit_point; 680 #endif 681 682 bool boot_vcpu_runs_old_kvmclock; 683 u32 bsp_vcpu_id; 684 685 u64 disabled_quirks; 686 }; 687 688 struct kvm_vm_stat { 689 u32 mmu_shadow_zapped; 690 u32 mmu_pte_write; 691 u32 mmu_pte_updated; 692 u32 mmu_pde_zapped; 693 u32 mmu_flooded; 694 u32 mmu_recycled; 695 u32 mmu_cache_miss; 696 u32 mmu_unsync; 697 u32 remote_tlb_flush; 698 u32 lpages; 699 }; 700 701 struct kvm_vcpu_stat { 702 u32 pf_fixed; 703 u32 pf_guest; 704 u32 tlb_flush; 705 u32 invlpg; 706 707 u32 exits; 708 u32 io_exits; 709 u32 mmio_exits; 710 u32 signal_exits; 711 u32 irq_window_exits; 712 u32 nmi_window_exits; 713 u32 halt_exits; 714 u32 halt_successful_poll; 715 u32 halt_attempted_poll; 716 u32 halt_wakeup; 717 u32 request_irq_exits; 718 u32 irq_exits; 719 u32 host_state_reload; 720 u32 efer_reload; 721 u32 fpu_reload; 722 u32 insn_emulation; 723 u32 insn_emulation_fail; 724 u32 hypercalls; 725 u32 irq_injections; 726 u32 nmi_injections; 727 }; 728 729 struct x86_instruction_info; 730 731 struct msr_data { 732 bool host_initiated; 733 u32 index; 734 u64 data; 735 }; 736 737 struct kvm_lapic_irq { 738 u32 vector; 739 u16 delivery_mode; 740 u16 dest_mode; 741 bool level; 742 u16 trig_mode; 743 u32 shorthand; 744 u32 dest_id; 745 bool msi_redir_hint; 746 }; 747 748 struct kvm_x86_ops { 749 int (*cpu_has_kvm_support)(void); /* __init */ 750 int (*disabled_by_bios)(void); /* __init */ 751 int (*hardware_enable)(void); 752 void (*hardware_disable)(void); 753 void (*check_processor_compatibility)(void *rtn); 754 int (*hardware_setup)(void); /* __init */ 755 void (*hardware_unsetup)(void); /* __exit */ 756 bool (*cpu_has_accelerated_tpr)(void); 757 bool (*cpu_has_high_real_mode_segbase)(void); 758 void (*cpuid_update)(struct kvm_vcpu *vcpu); 759 760 /* Create, but do not attach this VCPU */ 761 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); 762 void (*vcpu_free)(struct kvm_vcpu *vcpu); 763 void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event); 764 765 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); 766 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 767 void (*vcpu_put)(struct kvm_vcpu *vcpu); 768 769 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu); 770 int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr); 771 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr); 772 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); 773 void (*get_segment)(struct kvm_vcpu *vcpu, 774 struct kvm_segment *var, int seg); 775 int (*get_cpl)(struct kvm_vcpu *vcpu); 776 void (*set_segment)(struct kvm_vcpu *vcpu, 777 struct kvm_segment *var, int seg); 778 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); 779 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu); 780 void (*decache_cr3)(struct kvm_vcpu *vcpu); 781 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); 782 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); 783 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); 784 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); 785 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); 786 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 787 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 788 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 789 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); 790 u64 (*get_dr6)(struct kvm_vcpu *vcpu); 791 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value); 792 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu); 793 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value); 794 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); 795 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); 796 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); 797 void (*fpu_activate)(struct kvm_vcpu *vcpu); 798 void (*fpu_deactivate)(struct kvm_vcpu *vcpu); 799 800 void (*tlb_flush)(struct kvm_vcpu *vcpu); 801 802 void (*run)(struct kvm_vcpu *vcpu); 803 int (*handle_exit)(struct kvm_vcpu *vcpu); 804 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); 805 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask); 806 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu); 807 void (*patch_hypercall)(struct kvm_vcpu *vcpu, 808 unsigned char *hypercall_addr); 809 void (*set_irq)(struct kvm_vcpu *vcpu); 810 void (*set_nmi)(struct kvm_vcpu *vcpu); 811 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, 812 bool has_error_code, u32 error_code, 813 bool reinject); 814 void (*cancel_injection)(struct kvm_vcpu *vcpu); 815 int (*interrupt_allowed)(struct kvm_vcpu *vcpu); 816 int (*nmi_allowed)(struct kvm_vcpu *vcpu); 817 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu); 818 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked); 819 void (*enable_nmi_window)(struct kvm_vcpu *vcpu); 820 void (*enable_irq_window)(struct kvm_vcpu *vcpu); 821 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr); 822 int (*vm_has_apicv)(struct kvm *kvm); 823 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr); 824 void (*hwapic_isr_update)(struct kvm *kvm, int isr); 825 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap); 826 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set); 827 void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu, hpa_t hpa); 828 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector); 829 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu); 830 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); 831 int (*get_tdp_level)(void); 832 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio); 833 int (*get_lpage_level)(void); 834 bool (*rdtscp_supported)(void); 835 bool (*invpcid_supported)(void); 836 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host); 837 838 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); 839 840 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry); 841 842 bool (*has_wbinvd_exit)(void); 843 844 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale); 845 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu); 846 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); 847 848 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc); 849 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc); 850 851 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2); 852 853 int (*check_intercept)(struct kvm_vcpu *vcpu, 854 struct x86_instruction_info *info, 855 enum x86_intercept_stage stage); 856 void (*handle_external_intr)(struct kvm_vcpu *vcpu); 857 bool (*mpx_supported)(void); 858 bool (*xsaves_supported)(void); 859 860 int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr); 861 862 void (*sched_in)(struct kvm_vcpu *kvm, int cpu); 863 864 /* 865 * Arch-specific dirty logging hooks. These hooks are only supposed to 866 * be valid if the specific arch has hardware-accelerated dirty logging 867 * mechanism. Currently only for PML on VMX. 868 * 869 * - slot_enable_log_dirty: 870 * called when enabling log dirty mode for the slot. 871 * - slot_disable_log_dirty: 872 * called when disabling log dirty mode for the slot. 873 * also called when slot is created with log dirty disabled. 874 * - flush_log_dirty: 875 * called before reporting dirty_bitmap to userspace. 876 * - enable_log_dirty_pt_masked: 877 * called when reenabling log dirty for the GFNs in the mask after 878 * corresponding bits are cleared in slot->dirty_bitmap. 879 */ 880 void (*slot_enable_log_dirty)(struct kvm *kvm, 881 struct kvm_memory_slot *slot); 882 void (*slot_disable_log_dirty)(struct kvm *kvm, 883 struct kvm_memory_slot *slot); 884 void (*flush_log_dirty)(struct kvm *kvm); 885 void (*enable_log_dirty_pt_masked)(struct kvm *kvm, 886 struct kvm_memory_slot *slot, 887 gfn_t offset, unsigned long mask); 888 /* pmu operations of sub-arch */ 889 const struct kvm_pmu_ops *pmu_ops; 890 }; 891 892 struct kvm_arch_async_pf { 893 u32 token; 894 gfn_t gfn; 895 unsigned long cr3; 896 bool direct_map; 897 }; 898 899 extern struct kvm_x86_ops *kvm_x86_ops; 900 901 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu, 902 s64 adjustment) 903 { 904 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false); 905 } 906 907 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment) 908 { 909 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true); 910 } 911 912 int kvm_mmu_module_init(void); 913 void kvm_mmu_module_exit(void); 914 915 void kvm_mmu_destroy(struct kvm_vcpu *vcpu); 916 int kvm_mmu_create(struct kvm_vcpu *vcpu); 917 void kvm_mmu_setup(struct kvm_vcpu *vcpu); 918 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, 919 u64 dirty_mask, u64 nx_mask, u64 x_mask); 920 921 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu); 922 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, 923 struct kvm_memory_slot *memslot); 924 void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm, 925 const struct kvm_memory_slot *memslot); 926 void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm, 927 struct kvm_memory_slot *memslot); 928 void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm, 929 struct kvm_memory_slot *memslot); 930 void kvm_mmu_slot_set_dirty(struct kvm *kvm, 931 struct kvm_memory_slot *memslot); 932 void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm, 933 struct kvm_memory_slot *slot, 934 gfn_t gfn_offset, unsigned long mask); 935 void kvm_mmu_zap_all(struct kvm *kvm); 936 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, struct kvm_memslots *slots); 937 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); 938 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); 939 940 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3); 941 942 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, 943 const void *val, int bytes); 944 945 struct kvm_irq_mask_notifier { 946 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); 947 int irq; 948 struct hlist_node link; 949 }; 950 951 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, 952 struct kvm_irq_mask_notifier *kimn); 953 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, 954 struct kvm_irq_mask_notifier *kimn); 955 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, 956 bool mask); 957 958 extern bool tdp_enabled; 959 960 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu); 961 962 /* control of guest tsc rate supported? */ 963 extern bool kvm_has_tsc_control; 964 /* minimum supported tsc_khz for guests */ 965 extern u32 kvm_min_guest_tsc_khz; 966 /* maximum supported tsc_khz for guests */ 967 extern u32 kvm_max_guest_tsc_khz; 968 969 enum emulation_result { 970 EMULATE_DONE, /* no further processing */ 971 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */ 972 EMULATE_FAIL, /* can't emulate this instruction */ 973 }; 974 975 #define EMULTYPE_NO_DECODE (1 << 0) 976 #define EMULTYPE_TRAP_UD (1 << 1) 977 #define EMULTYPE_SKIP (1 << 2) 978 #define EMULTYPE_RETRY (1 << 3) 979 #define EMULTYPE_NO_REEXECUTE (1 << 4) 980 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2, 981 int emulation_type, void *insn, int insn_len); 982 983 static inline int emulate_instruction(struct kvm_vcpu *vcpu, 984 int emulation_type) 985 { 986 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0); 987 } 988 989 void kvm_enable_efer_bits(u64); 990 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer); 991 int kvm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr); 992 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr); 993 994 struct x86_emulate_ctxt; 995 996 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port); 997 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); 998 int kvm_emulate_halt(struct kvm_vcpu *vcpu); 999 int kvm_vcpu_halt(struct kvm_vcpu *vcpu); 1000 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu); 1001 1002 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); 1003 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg); 1004 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector); 1005 1006 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index, 1007 int reason, bool has_error_code, u32 error_code); 1008 1009 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); 1010 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); 1011 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); 1012 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); 1013 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val); 1014 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val); 1015 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); 1016 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); 1017 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); 1018 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr); 1019 1020 int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr); 1021 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr); 1022 1023 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu); 1024 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags); 1025 bool kvm_rdpmc(struct kvm_vcpu *vcpu); 1026 1027 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); 1028 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); 1029 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr); 1030 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); 1031 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); 1032 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, 1033 gfn_t gfn, void *data, int offset, int len, 1034 u32 access); 1035 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl); 1036 bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr); 1037 1038 static inline int __kvm_irq_line_state(unsigned long *irq_state, 1039 int irq_source_id, int level) 1040 { 1041 /* Logical OR for level trig interrupt */ 1042 if (level) 1043 __set_bit(irq_source_id, irq_state); 1044 else 1045 __clear_bit(irq_source_id, irq_state); 1046 1047 return !!(*irq_state); 1048 } 1049 1050 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level); 1051 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id); 1052 1053 void kvm_inject_nmi(struct kvm_vcpu *vcpu); 1054 1055 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, 1056 const u8 *new, int bytes); 1057 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn); 1058 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); 1059 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); 1060 int kvm_mmu_load(struct kvm_vcpu *vcpu); 1061 void kvm_mmu_unload(struct kvm_vcpu *vcpu); 1062 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); 1063 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 1064 struct x86_exception *exception); 1065 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, 1066 struct x86_exception *exception); 1067 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, 1068 struct x86_exception *exception); 1069 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, 1070 struct x86_exception *exception); 1071 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, 1072 struct x86_exception *exception); 1073 1074 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); 1075 1076 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code, 1077 void *insn, int insn_len); 1078 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); 1079 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu); 1080 1081 void kvm_enable_tdp(void); 1082 void kvm_disable_tdp(void); 1083 1084 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, 1085 struct x86_exception *exception) 1086 { 1087 return gpa; 1088 } 1089 1090 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) 1091 { 1092 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); 1093 1094 return (struct kvm_mmu_page *)page_private(page); 1095 } 1096 1097 static inline u16 kvm_read_ldt(void) 1098 { 1099 u16 ldt; 1100 asm("sldt %0" : "=g"(ldt)); 1101 return ldt; 1102 } 1103 1104 static inline void kvm_load_ldt(u16 sel) 1105 { 1106 asm("lldt %0" : : "rm"(sel)); 1107 } 1108 1109 #ifdef CONFIG_X86_64 1110 static inline unsigned long read_msr(unsigned long msr) 1111 { 1112 u64 value; 1113 1114 rdmsrl(msr, value); 1115 return value; 1116 } 1117 #endif 1118 1119 static inline u32 get_rdx_init_val(void) 1120 { 1121 return 0x600; /* P6 family */ 1122 } 1123 1124 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) 1125 { 1126 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); 1127 } 1128 1129 static inline u64 get_canonical(u64 la) 1130 { 1131 return ((int64_t)la << 16) >> 16; 1132 } 1133 1134 static inline bool is_noncanonical_address(u64 la) 1135 { 1136 #ifdef CONFIG_X86_64 1137 return get_canonical(la) != la; 1138 #else 1139 return false; 1140 #endif 1141 } 1142 1143 #define TSS_IOPB_BASE_OFFSET 0x66 1144 #define TSS_BASE_SIZE 0x68 1145 #define TSS_IOPB_SIZE (65536 / 8) 1146 #define TSS_REDIRECTION_SIZE (256 / 8) 1147 #define RMODE_TSS_SIZE \ 1148 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) 1149 1150 enum { 1151 TASK_SWITCH_CALL = 0, 1152 TASK_SWITCH_IRET = 1, 1153 TASK_SWITCH_JMP = 2, 1154 TASK_SWITCH_GATE = 3, 1155 }; 1156 1157 #define HF_GIF_MASK (1 << 0) 1158 #define HF_HIF_MASK (1 << 1) 1159 #define HF_VINTR_MASK (1 << 2) 1160 #define HF_NMI_MASK (1 << 3) 1161 #define HF_IRET_MASK (1 << 4) 1162 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ 1163 #define HF_SMM_MASK (1 << 6) 1164 #define HF_SMM_INSIDE_NMI_MASK (1 << 7) 1165 1166 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE 1167 #define KVM_ADDRESS_SPACE_NUM 2 1168 1169 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0) 1170 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm) 1171 1172 /* 1173 * Hardware virtualization extension instructions may fault if a 1174 * reboot turns off virtualization while processes are running. 1175 * Trap the fault and ignore the instruction if that happens. 1176 */ 1177 asmlinkage void kvm_spurious_fault(void); 1178 1179 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \ 1180 "666: " insn "\n\t" \ 1181 "668: \n\t" \ 1182 ".pushsection .fixup, \"ax\" \n" \ 1183 "667: \n\t" \ 1184 cleanup_insn "\n\t" \ 1185 "cmpb $0, kvm_rebooting \n\t" \ 1186 "jne 668b \n\t" \ 1187 __ASM_SIZE(push) " $666b \n\t" \ 1188 "call kvm_spurious_fault \n\t" \ 1189 ".popsection \n\t" \ 1190 _ASM_EXTABLE(666b, 667b) 1191 1192 #define __kvm_handle_fault_on_reboot(insn) \ 1193 ____kvm_handle_fault_on_reboot(insn, "") 1194 1195 #define KVM_ARCH_WANT_MMU_NOTIFIER 1196 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); 1197 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); 1198 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); 1199 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); 1200 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); 1201 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v); 1202 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); 1203 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu); 1204 int kvm_cpu_get_interrupt(struct kvm_vcpu *v); 1205 void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event); 1206 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu); 1207 void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, 1208 unsigned long address); 1209 1210 void kvm_define_shared_msr(unsigned index, u32 msr); 1211 int kvm_set_shared_msr(unsigned index, u64 val, u64 mask); 1212 1213 unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu); 1214 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); 1215 1216 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 1217 struct kvm_async_pf *work); 1218 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 1219 struct kvm_async_pf *work); 1220 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 1221 struct kvm_async_pf *work); 1222 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 1223 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn); 1224 1225 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); 1226 1227 int kvm_is_in_guest(void); 1228 1229 int __x86_set_memory_region(struct kvm *kvm, 1230 const struct kvm_userspace_memory_region *mem); 1231 int x86_set_memory_region(struct kvm *kvm, 1232 const struct kvm_userspace_memory_region *mem); 1233 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu); 1234 bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu); 1235 1236 #endif /* _ASM_X86_KVM_HOST_H */ 1237