1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Kernel-based Virtual Machine driver for Linux
4 *
5 * This header defines architecture specific interfaces, x86 version
6 */
7
8 #ifndef _ASM_X86_KVM_HOST_H
9 #define _ASM_X86_KVM_HOST_H
10
11 #include <linux/types.h>
12 #include <linux/mm.h>
13 #include <linux/mmu_notifier.h>
14 #include <linux/tracepoint.h>
15 #include <linux/cpumask.h>
16 #include <linux/irq_work.h>
17 #include <linux/irq.h>
18
19 #include <linux/kvm.h>
20 #include <linux/kvm_para.h>
21 #include <linux/kvm_types.h>
22 #include <linux/perf_event.h>
23 #include <linux/pvclock_gtod.h>
24 #include <linux/clocksource.h>
25 #include <linux/irqbypass.h>
26 #include <linux/hyperv.h>
27
28 #include <asm/apic.h>
29 #include <asm/pvclock-abi.h>
30 #include <asm/desc.h>
31 #include <asm/mtrr.h>
32 #include <asm/msr-index.h>
33 #include <asm/asm.h>
34 #include <asm/kvm_page_track.h>
35 #include <asm/kvm_vcpu_regs.h>
36 #include <asm/hyperv-tlfs.h>
37
38 #define __KVM_HAVE_ARCH_VCPU_DEBUGFS
39
40 #define KVM_MAX_VCPUS 288
41 #define KVM_SOFT_MAX_VCPUS 240
42 #define KVM_MAX_VCPU_ID 1023
43 #define KVM_USER_MEM_SLOTS 509
44 /* memory slots that are not exposed to userspace */
45 #define KVM_PRIVATE_MEM_SLOTS 3
46 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
47
48 #define KVM_HALT_POLL_NS_DEFAULT 200000
49
50 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
51
52 #define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \
53 KVM_DIRTY_LOG_INITIALLY_SET)
54
55 /* x86-specific vcpu->requests bit members */
56 #define KVM_REQ_MIGRATE_TIMER KVM_ARCH_REQ(0)
57 #define KVM_REQ_REPORT_TPR_ACCESS KVM_ARCH_REQ(1)
58 #define KVM_REQ_TRIPLE_FAULT KVM_ARCH_REQ(2)
59 #define KVM_REQ_MMU_SYNC KVM_ARCH_REQ(3)
60 #define KVM_REQ_CLOCK_UPDATE KVM_ARCH_REQ(4)
61 #define KVM_REQ_LOAD_MMU_PGD KVM_ARCH_REQ(5)
62 #define KVM_REQ_EVENT KVM_ARCH_REQ(6)
63 #define KVM_REQ_APF_HALT KVM_ARCH_REQ(7)
64 #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(8)
65 #define KVM_REQ_NMI KVM_ARCH_REQ(9)
66 #define KVM_REQ_PMU KVM_ARCH_REQ(10)
67 #define KVM_REQ_PMI KVM_ARCH_REQ(11)
68 #define KVM_REQ_SMI KVM_ARCH_REQ(12)
69 #define KVM_REQ_MASTERCLOCK_UPDATE KVM_ARCH_REQ(13)
70 #define KVM_REQ_MCLOCK_INPROGRESS \
71 KVM_ARCH_REQ_FLAGS(14, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
72 #define KVM_REQ_SCAN_IOAPIC \
73 KVM_ARCH_REQ_FLAGS(15, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
74 #define KVM_REQ_GLOBAL_CLOCK_UPDATE KVM_ARCH_REQ(16)
75 #define KVM_REQ_APIC_PAGE_RELOAD \
76 KVM_ARCH_REQ_FLAGS(17, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
77 #define KVM_REQ_HV_CRASH KVM_ARCH_REQ(18)
78 #define KVM_REQ_IOAPIC_EOI_EXIT KVM_ARCH_REQ(19)
79 #define KVM_REQ_HV_RESET KVM_ARCH_REQ(20)
80 #define KVM_REQ_HV_EXIT KVM_ARCH_REQ(21)
81 #define KVM_REQ_HV_STIMER KVM_ARCH_REQ(22)
82 #define KVM_REQ_LOAD_EOI_EXITMAP KVM_ARCH_REQ(23)
83 #define KVM_REQ_GET_NESTED_STATE_PAGES KVM_ARCH_REQ(24)
84 #define KVM_REQ_APICV_UPDATE \
85 KVM_ARCH_REQ_FLAGS(25, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
86 #define KVM_REQ_TLB_FLUSH_CURRENT KVM_ARCH_REQ(26)
87 #define KVM_REQ_TLB_FLUSH_GUEST \
88 KVM_ARCH_REQ_FLAGS(27, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
89 #define KVM_REQ_APF_READY KVM_ARCH_REQ(28)
90 #define KVM_REQ_MSR_FILTER_CHANGED KVM_ARCH_REQ(29)
91
92 #define CR0_RESERVED_BITS \
93 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
94 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
95 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
96
97 #define CR4_RESERVED_BITS \
98 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
99 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
100 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR | X86_CR4_PCIDE \
101 | X86_CR4_OSXSAVE | X86_CR4_SMEP | X86_CR4_FSGSBASE \
102 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_VMXE \
103 | X86_CR4_SMAP | X86_CR4_PKE | X86_CR4_UMIP))
104
105 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
106
107
108
109 #define INVALID_PAGE (~(hpa_t)0)
110 #define VALID_PAGE(x) ((x) != INVALID_PAGE)
111
112 #define UNMAPPED_GVA (~(gpa_t)0)
113
114 /* KVM Hugepage definitions for x86 */
115 #define KVM_MAX_HUGEPAGE_LEVEL PG_LEVEL_1G
116 #define KVM_NR_PAGE_SIZES (KVM_MAX_HUGEPAGE_LEVEL - PG_LEVEL_4K + 1)
117 #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
118 #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
119 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
120 #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
121 #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
122
gfn_to_index(gfn_t gfn,gfn_t base_gfn,int level)123 static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
124 {
125 /* KVM_HPAGE_GFN_SHIFT(PG_LEVEL_4K) must be 0. */
126 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
127 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
128 }
129
130 #define KVM_PERMILLE_MMU_PAGES 20
131 #define KVM_MIN_ALLOC_MMU_PAGES 64UL
132 #define KVM_MMU_HASH_SHIFT 12
133 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
134 #define KVM_MIN_FREE_MMU_PAGES 5
135 #define KVM_REFILL_PAGES 25
136 #define KVM_MAX_CPUID_ENTRIES 256
137 #define KVM_NR_FIXED_MTRR_REGION 88
138 #define KVM_NR_VAR_MTRR 8
139
140 #define ASYNC_PF_PER_VCPU 64
141
142 enum kvm_reg {
143 VCPU_REGS_RAX = __VCPU_REGS_RAX,
144 VCPU_REGS_RCX = __VCPU_REGS_RCX,
145 VCPU_REGS_RDX = __VCPU_REGS_RDX,
146 VCPU_REGS_RBX = __VCPU_REGS_RBX,
147 VCPU_REGS_RSP = __VCPU_REGS_RSP,
148 VCPU_REGS_RBP = __VCPU_REGS_RBP,
149 VCPU_REGS_RSI = __VCPU_REGS_RSI,
150 VCPU_REGS_RDI = __VCPU_REGS_RDI,
151 #ifdef CONFIG_X86_64
152 VCPU_REGS_R8 = __VCPU_REGS_R8,
153 VCPU_REGS_R9 = __VCPU_REGS_R9,
154 VCPU_REGS_R10 = __VCPU_REGS_R10,
155 VCPU_REGS_R11 = __VCPU_REGS_R11,
156 VCPU_REGS_R12 = __VCPU_REGS_R12,
157 VCPU_REGS_R13 = __VCPU_REGS_R13,
158 VCPU_REGS_R14 = __VCPU_REGS_R14,
159 VCPU_REGS_R15 = __VCPU_REGS_R15,
160 #endif
161 VCPU_REGS_RIP,
162 NR_VCPU_REGS,
163
164 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
165 VCPU_EXREG_CR0,
166 VCPU_EXREG_CR3,
167 VCPU_EXREG_CR4,
168 VCPU_EXREG_RFLAGS,
169 VCPU_EXREG_SEGMENTS,
170 VCPU_EXREG_EXIT_INFO_1,
171 VCPU_EXREG_EXIT_INFO_2,
172 };
173
174 enum {
175 VCPU_SREG_ES,
176 VCPU_SREG_CS,
177 VCPU_SREG_SS,
178 VCPU_SREG_DS,
179 VCPU_SREG_FS,
180 VCPU_SREG_GS,
181 VCPU_SREG_TR,
182 VCPU_SREG_LDTR,
183 };
184
185 enum exit_fastpath_completion {
186 EXIT_FASTPATH_NONE,
187 EXIT_FASTPATH_REENTER_GUEST,
188 EXIT_FASTPATH_EXIT_HANDLED,
189 };
190 typedef enum exit_fastpath_completion fastpath_t;
191
192 struct x86_emulate_ctxt;
193 struct x86_exception;
194 enum x86_intercept;
195 enum x86_intercept_stage;
196
197 #define KVM_NR_DB_REGS 4
198
199 #define DR6_BD (1 << 13)
200 #define DR6_BS (1 << 14)
201 #define DR6_BT (1 << 15)
202 #define DR6_RTM (1 << 16)
203 #define DR6_FIXED_1 0xfffe0ff0
204 #define DR6_INIT 0xffff0ff0
205 #define DR6_VOLATILE 0x0001e00f
206
207 #define DR7_BP_EN_MASK 0x000000ff
208 #define DR7_GE (1 << 9)
209 #define DR7_GD (1 << 13)
210 #define DR7_FIXED_1 0x00000400
211 #define DR7_VOLATILE 0xffff2bff
212
213 #define PFERR_PRESENT_BIT 0
214 #define PFERR_WRITE_BIT 1
215 #define PFERR_USER_BIT 2
216 #define PFERR_RSVD_BIT 3
217 #define PFERR_FETCH_BIT 4
218 #define PFERR_PK_BIT 5
219 #define PFERR_GUEST_FINAL_BIT 32
220 #define PFERR_GUEST_PAGE_BIT 33
221
222 #define PFERR_PRESENT_MASK (1U << PFERR_PRESENT_BIT)
223 #define PFERR_WRITE_MASK (1U << PFERR_WRITE_BIT)
224 #define PFERR_USER_MASK (1U << PFERR_USER_BIT)
225 #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT)
226 #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT)
227 #define PFERR_PK_MASK (1U << PFERR_PK_BIT)
228 #define PFERR_GUEST_FINAL_MASK (1ULL << PFERR_GUEST_FINAL_BIT)
229 #define PFERR_GUEST_PAGE_MASK (1ULL << PFERR_GUEST_PAGE_BIT)
230
231 #define PFERR_NESTED_GUEST_PAGE (PFERR_GUEST_PAGE_MASK | \
232 PFERR_WRITE_MASK | \
233 PFERR_PRESENT_MASK)
234
235 /* apic attention bits */
236 #define KVM_APIC_CHECK_VAPIC 0
237 /*
238 * The following bit is set with PV-EOI, unset on EOI.
239 * We detect PV-EOI changes by guest by comparing
240 * this bit with PV-EOI in guest memory.
241 * See the implementation in apic_update_pv_eoi.
242 */
243 #define KVM_APIC_PV_EOI_PENDING 1
244
245 struct kvm_kernel_irq_routing_entry;
246
247 /*
248 * the pages used as guest page table on soft mmu are tracked by
249 * kvm_memory_slot.arch.gfn_track which is 16 bits, so the role bits used
250 * by indirect shadow page can not be more than 15 bits.
251 *
252 * Currently, we used 14 bits that are @level, @gpte_is_8_bytes, @quadrant, @access,
253 * @nxe, @cr0_wp, @smep_andnot_wp and @smap_andnot_wp.
254 */
255 union kvm_mmu_page_role {
256 u32 word;
257 struct {
258 unsigned level:4;
259 unsigned gpte_is_8_bytes:1;
260 unsigned quadrant:2;
261 unsigned direct:1;
262 unsigned access:3;
263 unsigned invalid:1;
264 unsigned nxe:1;
265 unsigned cr0_wp:1;
266 unsigned smep_andnot_wp:1;
267 unsigned smap_andnot_wp:1;
268 unsigned ad_disabled:1;
269 unsigned guest_mode:1;
270 unsigned :6;
271
272 /*
273 * This is left at the top of the word so that
274 * kvm_memslots_for_spte_role can extract it with a
275 * simple shift. While there is room, give it a whole
276 * byte so it is also faster to load it from memory.
277 */
278 unsigned smm:8;
279 };
280 };
281
282 union kvm_mmu_extended_role {
283 /*
284 * This structure complements kvm_mmu_page_role caching everything needed for
285 * MMU configuration. If nothing in both these structures changed, MMU
286 * re-configuration can be skipped. @valid bit is set on first usage so we don't
287 * treat all-zero structure as valid data.
288 */
289 u32 word;
290 struct {
291 unsigned int valid:1;
292 unsigned int execonly:1;
293 unsigned int cr0_pg:1;
294 unsigned int cr4_pae:1;
295 unsigned int cr4_pse:1;
296 unsigned int cr4_pke:1;
297 unsigned int cr4_smap:1;
298 unsigned int cr4_smep:1;
299 unsigned int cr4_la57:1;
300 unsigned int maxphyaddr:6;
301 };
302 };
303
304 union kvm_mmu_role {
305 u64 as_u64;
306 struct {
307 union kvm_mmu_page_role base;
308 union kvm_mmu_extended_role ext;
309 };
310 };
311
312 struct kvm_rmap_head {
313 unsigned long val;
314 };
315
316 struct kvm_pio_request {
317 unsigned long linear_rip;
318 unsigned long count;
319 int in;
320 int port;
321 int size;
322 };
323
324 #define PT64_ROOT_MAX_LEVEL 5
325
326 struct rsvd_bits_validate {
327 u64 rsvd_bits_mask[2][PT64_ROOT_MAX_LEVEL];
328 u64 bad_mt_xwr;
329 };
330
331 struct kvm_mmu_root_info {
332 gpa_t pgd;
333 hpa_t hpa;
334 };
335
336 #define KVM_MMU_ROOT_INFO_INVALID \
337 ((struct kvm_mmu_root_info) { .pgd = INVALID_PAGE, .hpa = INVALID_PAGE })
338
339 #define KVM_MMU_NUM_PREV_ROOTS 3
340
341 struct kvm_mmu_page;
342
343 /*
344 * x86 supports 4 paging modes (5-level 64-bit, 4-level 64-bit, 3-level 32-bit,
345 * and 2-level 32-bit). The kvm_mmu structure abstracts the details of the
346 * current mmu mode.
347 */
348 struct kvm_mmu {
349 unsigned long (*get_guest_pgd)(struct kvm_vcpu *vcpu);
350 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
351 int (*page_fault)(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u32 err,
352 bool prefault);
353 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
354 struct x86_exception *fault);
355 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gpa_t gva_or_gpa,
356 u32 access, struct x86_exception *exception);
357 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
358 struct x86_exception *exception);
359 int (*sync_page)(struct kvm_vcpu *vcpu,
360 struct kvm_mmu_page *sp);
361 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa);
362 hpa_t root_hpa;
363 gpa_t root_pgd;
364 union kvm_mmu_role mmu_role;
365 u8 root_level;
366 u8 shadow_root_level;
367 u8 ept_ad;
368 bool direct_map;
369 struct kvm_mmu_root_info prev_roots[KVM_MMU_NUM_PREV_ROOTS];
370
371 /*
372 * Bitmap; bit set = permission fault
373 * Byte index: page fault error code [4:1]
374 * Bit index: pte permissions in ACC_* format
375 */
376 u8 permissions[16];
377
378 /*
379 * The pkru_mask indicates if protection key checks are needed. It
380 * consists of 16 domains indexed by page fault error code bits [4:1],
381 * with PFEC.RSVD replaced by ACC_USER_MASK from the page tables.
382 * Each domain has 2 bits which are ANDed with AD and WD from PKRU.
383 */
384 u32 pkru_mask;
385
386 u64 *pae_root;
387 u64 *lm_root;
388
389 /*
390 * check zero bits on shadow page table entries, these
391 * bits include not only hardware reserved bits but also
392 * the bits spte never used.
393 */
394 struct rsvd_bits_validate shadow_zero_check;
395
396 struct rsvd_bits_validate guest_rsvd_check;
397
398 /* Can have large pages at levels 2..last_nonleaf_level-1. */
399 u8 last_nonleaf_level;
400
401 bool nx;
402
403 u64 pdptrs[4]; /* pae */
404 };
405
406 struct kvm_tlb_range {
407 u64 start_gfn;
408 u64 pages;
409 };
410
411 enum pmc_type {
412 KVM_PMC_GP = 0,
413 KVM_PMC_FIXED,
414 };
415
416 struct kvm_pmc {
417 enum pmc_type type;
418 u8 idx;
419 u64 counter;
420 u64 eventsel;
421 struct perf_event *perf_event;
422 struct kvm_vcpu *vcpu;
423 /*
424 * eventsel value for general purpose counters,
425 * ctrl value for fixed counters.
426 */
427 u64 current_config;
428 };
429
430 struct kvm_pmu {
431 unsigned nr_arch_gp_counters;
432 unsigned nr_arch_fixed_counters;
433 unsigned available_event_types;
434 u64 fixed_ctr_ctrl;
435 u64 fixed_ctr_ctrl_mask;
436 u64 global_ctrl;
437 u64 global_status;
438 u64 global_ovf_ctrl;
439 u64 counter_bitmask[2];
440 u64 global_ctrl_mask;
441 u64 global_ovf_ctrl_mask;
442 u64 reserved_bits;
443 u64 raw_event_mask;
444 u8 version;
445 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
446 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
447 struct irq_work irq_work;
448 DECLARE_BITMAP(reprogram_pmi, X86_PMC_IDX_MAX);
449 DECLARE_BITMAP(all_valid_pmc_idx, X86_PMC_IDX_MAX);
450 DECLARE_BITMAP(pmc_in_use, X86_PMC_IDX_MAX);
451
452 /*
453 * The gate to release perf_events not marked in
454 * pmc_in_use only once in a vcpu time slice.
455 */
456 bool need_cleanup;
457
458 /*
459 * The total number of programmed perf_events and it helps to avoid
460 * redundant check before cleanup if guest don't use vPMU at all.
461 */
462 u8 event_count;
463 };
464
465 struct kvm_pmu_ops;
466
467 enum {
468 KVM_DEBUGREG_BP_ENABLED = 1,
469 KVM_DEBUGREG_WONT_EXIT = 2,
470 KVM_DEBUGREG_RELOAD = 4,
471 };
472
473 struct kvm_mtrr_range {
474 u64 base;
475 u64 mask;
476 struct list_head node;
477 };
478
479 struct kvm_mtrr {
480 struct kvm_mtrr_range var_ranges[KVM_NR_VAR_MTRR];
481 mtrr_type fixed_ranges[KVM_NR_FIXED_MTRR_REGION];
482 u64 deftype;
483
484 struct list_head head;
485 };
486
487 /* Hyper-V SynIC timer */
488 struct kvm_vcpu_hv_stimer {
489 struct hrtimer timer;
490 int index;
491 union hv_stimer_config config;
492 u64 count;
493 u64 exp_time;
494 struct hv_message msg;
495 bool msg_pending;
496 };
497
498 /* Hyper-V synthetic interrupt controller (SynIC)*/
499 struct kvm_vcpu_hv_synic {
500 u64 version;
501 u64 control;
502 u64 msg_page;
503 u64 evt_page;
504 atomic64_t sint[HV_SYNIC_SINT_COUNT];
505 atomic_t sint_to_gsi[HV_SYNIC_SINT_COUNT];
506 DECLARE_BITMAP(auto_eoi_bitmap, 256);
507 DECLARE_BITMAP(vec_bitmap, 256);
508 bool active;
509 bool dont_zero_synic_pages;
510 };
511
512 /* Hyper-V per vcpu emulation context */
513 struct kvm_vcpu_hv {
514 u32 vp_index;
515 u64 hv_vapic;
516 s64 runtime_offset;
517 struct kvm_vcpu_hv_synic synic;
518 struct kvm_hyperv_exit exit;
519 struct kvm_vcpu_hv_stimer stimer[HV_SYNIC_STIMER_COUNT];
520 DECLARE_BITMAP(stimer_pending_bitmap, HV_SYNIC_STIMER_COUNT);
521 cpumask_t tlb_flush;
522 };
523
524 struct kvm_vcpu_arch {
525 /*
526 * rip and regs accesses must go through
527 * kvm_{register,rip}_{read,write} functions.
528 */
529 unsigned long regs[NR_VCPU_REGS];
530 u32 regs_avail;
531 u32 regs_dirty;
532
533 unsigned long cr0;
534 unsigned long cr0_guest_owned_bits;
535 unsigned long cr2;
536 unsigned long cr3;
537 unsigned long cr4;
538 unsigned long cr4_guest_owned_bits;
539 unsigned long cr4_guest_rsvd_bits;
540 unsigned long cr8;
541 u32 host_pkru;
542 u32 pkru;
543 u32 hflags;
544 u64 efer;
545 u64 apic_base;
546 struct kvm_lapic *apic; /* kernel irqchip context */
547 bool apicv_active;
548 bool load_eoi_exitmap_pending;
549 DECLARE_BITMAP(ioapic_handled_vectors, 256);
550 unsigned long apic_attention;
551 int32_t apic_arb_prio;
552 int mp_state;
553 u64 ia32_misc_enable_msr;
554 u64 smbase;
555 u64 smi_count;
556 bool at_instruction_boundary;
557 bool tpr_access_reporting;
558 bool xsaves_enabled;
559 u64 ia32_xss;
560 u64 microcode_version;
561 u64 arch_capabilities;
562 u64 perf_capabilities;
563
564 /*
565 * Paging state of the vcpu
566 *
567 * If the vcpu runs in guest mode with two level paging this still saves
568 * the paging mode of the l1 guest. This context is always used to
569 * handle faults.
570 */
571 struct kvm_mmu *mmu;
572
573 /* Non-nested MMU for L1 */
574 struct kvm_mmu root_mmu;
575
576 /* L1 MMU when running nested */
577 struct kvm_mmu guest_mmu;
578
579 /*
580 * Paging state of an L2 guest (used for nested npt)
581 *
582 * This context will save all necessary information to walk page tables
583 * of an L2 guest. This context is only initialized for page table
584 * walking and not for faulting since we never handle l2 page faults on
585 * the host.
586 */
587 struct kvm_mmu nested_mmu;
588
589 /*
590 * Pointer to the mmu context currently used for
591 * gva_to_gpa translations.
592 */
593 struct kvm_mmu *walk_mmu;
594
595 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
596 struct kvm_mmu_memory_cache mmu_shadow_page_cache;
597 struct kvm_mmu_memory_cache mmu_gfn_array_cache;
598 struct kvm_mmu_memory_cache mmu_page_header_cache;
599
600 /*
601 * QEMU userspace and the guest each have their own FPU state.
602 * In vcpu_run, we switch between the user and guest FPU contexts.
603 * While running a VCPU, the VCPU thread will have the guest FPU
604 * context.
605 *
606 * Note that while the PKRU state lives inside the fpu registers,
607 * it is switched out separately at VMENTER and VMEXIT time. The
608 * "guest_fpu" state here contains the guest FPU context, with the
609 * host PRKU bits.
610 */
611 struct fpu *user_fpu;
612 struct fpu *guest_fpu;
613
614 u64 xcr0;
615 u64 guest_supported_xcr0;
616
617 struct kvm_pio_request pio;
618 void *pio_data;
619
620 u8 event_exit_inst_len;
621
622 struct kvm_queued_exception {
623 bool pending;
624 bool injected;
625 bool has_error_code;
626 u8 nr;
627 u32 error_code;
628 unsigned long payload;
629 bool has_payload;
630 u8 nested_apf;
631 } exception;
632
633 struct kvm_queued_interrupt {
634 bool injected;
635 bool soft;
636 u8 nr;
637 } interrupt;
638
639 int halt_request; /* real mode on Intel only */
640
641 int cpuid_nent;
642 struct kvm_cpuid_entry2 *cpuid_entries;
643
644 unsigned long cr3_lm_rsvd_bits;
645 int maxphyaddr;
646 int max_tdp_level;
647
648 /* emulate context */
649
650 struct x86_emulate_ctxt *emulate_ctxt;
651 bool emulate_regs_need_sync_to_vcpu;
652 bool emulate_regs_need_sync_from_vcpu;
653 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
654
655 gpa_t time;
656 struct pvclock_vcpu_time_info hv_clock;
657 unsigned int hw_tsc_khz;
658 struct gfn_to_hva_cache pv_time;
659 bool pv_time_enabled;
660 /* set guest stopped flag in pvclock flags field */
661 bool pvclock_set_guest_stopped_request;
662
663 struct {
664 u8 preempted;
665 u64 msr_val;
666 u64 last_steal;
667 struct gfn_to_pfn_cache cache;
668 } st;
669
670 u64 l1_tsc_offset;
671 u64 tsc_offset;
672 u64 last_guest_tsc;
673 u64 last_host_tsc;
674 u64 tsc_offset_adjustment;
675 u64 this_tsc_nsec;
676 u64 this_tsc_write;
677 u64 this_tsc_generation;
678 bool tsc_catchup;
679 bool tsc_always_catchup;
680 s8 virtual_tsc_shift;
681 u32 virtual_tsc_mult;
682 u32 virtual_tsc_khz;
683 s64 ia32_tsc_adjust_msr;
684 u64 msr_ia32_power_ctl;
685 u64 tsc_scaling_ratio;
686
687 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
688 unsigned nmi_pending; /* NMI queued after currently running handler */
689 bool nmi_injected; /* Trying to inject an NMI this entry */
690 bool smi_pending; /* SMI queued after currently running handler */
691
692 struct kvm_mtrr mtrr_state;
693 u64 pat;
694
695 unsigned switch_db_regs;
696 unsigned long db[KVM_NR_DB_REGS];
697 unsigned long dr6;
698 unsigned long dr7;
699 unsigned long eff_db[KVM_NR_DB_REGS];
700 unsigned long guest_debug_dr7;
701 u64 msr_platform_info;
702 u64 msr_misc_features_enables;
703
704 u64 mcg_cap;
705 u64 mcg_status;
706 u64 mcg_ctl;
707 u64 mcg_ext_ctl;
708 u64 *mce_banks;
709
710 /* Cache MMIO info */
711 u64 mmio_gva;
712 unsigned mmio_access;
713 gfn_t mmio_gfn;
714 u64 mmio_gen;
715
716 struct kvm_pmu pmu;
717
718 /* used for guest single stepping over the given code position */
719 unsigned long singlestep_rip;
720
721 struct kvm_vcpu_hv hyperv;
722
723 cpumask_var_t wbinvd_dirty_mask;
724
725 unsigned long last_retry_eip;
726 unsigned long last_retry_addr;
727
728 struct {
729 bool halted;
730 gfn_t gfns[ASYNC_PF_PER_VCPU];
731 struct gfn_to_hva_cache data;
732 u64 msr_en_val; /* MSR_KVM_ASYNC_PF_EN */
733 u64 msr_int_val; /* MSR_KVM_ASYNC_PF_INT */
734 u16 vec;
735 u32 id;
736 bool send_user_only;
737 u32 host_apf_flags;
738 unsigned long nested_apf_token;
739 bool delivery_as_pf_vmexit;
740 bool pageready_pending;
741 } apf;
742
743 /* OSVW MSRs (AMD only) */
744 struct {
745 u64 length;
746 u64 status;
747 } osvw;
748
749 struct {
750 u64 msr_val;
751 struct gfn_to_hva_cache data;
752 } pv_eoi;
753
754 u64 msr_kvm_poll_control;
755
756 /*
757 * Indicates the guest is trying to write a gfn that contains one or
758 * more of the PTEs used to translate the write itself, i.e. the access
759 * is changing its own translation in the guest page tables. KVM exits
760 * to userspace if emulation of the faulting instruction fails and this
761 * flag is set, as KVM cannot make forward progress.
762 *
763 * If emulation fails for a write to guest page tables, KVM unprotects
764 * (zaps) the shadow page for the target gfn and resumes the guest to
765 * retry the non-emulatable instruction (on hardware). Unprotecting the
766 * gfn doesn't allow forward progress for a self-changing access because
767 * doing so also zaps the translation for the gfn, i.e. retrying the
768 * instruction will hit a !PRESENT fault, which results in a new shadow
769 * page and sends KVM back to square one.
770 */
771 bool write_fault_to_shadow_pgtable;
772
773 /* set at EPT violation at this point */
774 unsigned long exit_qualification;
775
776 /* pv related host specific info */
777 struct {
778 bool pv_unhalted;
779 } pv;
780
781 int pending_ioapic_eoi;
782 int pending_external_vector;
783
784 /* be preempted when it's in kernel-mode(cpl=0) */
785 bool preempted_in_kernel;
786
787 /* Flush the L1 Data cache for L1TF mitigation on VMENTER */
788 bool l1tf_flush_l1d;
789
790 /* Host CPU on which VM-entry was most recently attempted */
791 unsigned int last_vmentry_cpu;
792
793 /* AMD MSRC001_0015 Hardware Configuration */
794 u64 msr_hwcr;
795
796 /* pv related cpuid info */
797 struct {
798 /*
799 * value of the eax register in the KVM_CPUID_FEATURES CPUID
800 * leaf.
801 */
802 u32 features;
803
804 /*
805 * indicates whether pv emulation should be disabled if features
806 * are not present in the guest's cpuid
807 */
808 bool enforce;
809 } pv_cpuid;
810 };
811
812 struct kvm_lpage_info {
813 int disallow_lpage;
814 };
815
816 struct kvm_arch_memory_slot {
817 struct kvm_rmap_head *rmap[KVM_NR_PAGE_SIZES];
818 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
819 unsigned short *gfn_track[KVM_PAGE_TRACK_MAX];
820 };
821
822 /*
823 * We use as the mode the number of bits allocated in the LDR for the
824 * logical processor ID. It happens that these are all powers of two.
825 * This makes it is very easy to detect cases where the APICs are
826 * configured for multiple modes; in that case, we cannot use the map and
827 * hence cannot use kvm_irq_delivery_to_apic_fast either.
828 */
829 #define KVM_APIC_MODE_XAPIC_CLUSTER 4
830 #define KVM_APIC_MODE_XAPIC_FLAT 8
831 #define KVM_APIC_MODE_X2APIC 16
832
833 struct kvm_apic_map {
834 struct rcu_head rcu;
835 u8 mode;
836 u32 max_apic_id;
837 union {
838 struct kvm_lapic *xapic_flat_map[8];
839 struct kvm_lapic *xapic_cluster_map[16][4];
840 };
841 struct kvm_lapic *phys_map[];
842 };
843
844 /* Hyper-V synthetic debugger (SynDbg)*/
845 struct kvm_hv_syndbg {
846 struct {
847 u64 control;
848 u64 status;
849 u64 send_page;
850 u64 recv_page;
851 u64 pending_page;
852 } control;
853 u64 options;
854 };
855
856 /* Hyper-V emulation context */
857 struct kvm_hv {
858 struct mutex hv_lock;
859 u64 hv_guest_os_id;
860 u64 hv_hypercall;
861 u64 hv_tsc_page;
862
863 /* Hyper-v based guest crash (NT kernel bugcheck) parameters */
864 u64 hv_crash_param[HV_X64_MSR_CRASH_PARAMS];
865 u64 hv_crash_ctl;
866
867 struct ms_hyperv_tsc_page tsc_ref;
868
869 struct idr conn_to_evt;
870
871 u64 hv_reenlightenment_control;
872 u64 hv_tsc_emulation_control;
873 u64 hv_tsc_emulation_status;
874
875 /* How many vCPUs have VP index != vCPU index */
876 atomic_t num_mismatched_vp_indexes;
877
878 struct hv_partition_assist_pg *hv_pa_pg;
879 struct kvm_hv_syndbg hv_syndbg;
880 };
881
882 struct msr_bitmap_range {
883 u32 flags;
884 u32 nmsrs;
885 u32 base;
886 unsigned long *bitmap;
887 };
888
889 enum kvm_irqchip_mode {
890 KVM_IRQCHIP_NONE,
891 KVM_IRQCHIP_KERNEL, /* created with KVM_CREATE_IRQCHIP */
892 KVM_IRQCHIP_SPLIT, /* created with KVM_CAP_SPLIT_IRQCHIP */
893 };
894
895 struct kvm_x86_msr_filter {
896 u8 count;
897 bool default_allow:1;
898 struct msr_bitmap_range ranges[16];
899 };
900
901 #define APICV_INHIBIT_REASON_DISABLE 0
902 #define APICV_INHIBIT_REASON_HYPERV 1
903 #define APICV_INHIBIT_REASON_NESTED 2
904 #define APICV_INHIBIT_REASON_IRQWIN 3
905 #define APICV_INHIBIT_REASON_PIT_REINJ 4
906 #define APICV_INHIBIT_REASON_X2APIC 5
907
908 struct kvm_arch {
909 unsigned long n_used_mmu_pages;
910 unsigned long n_requested_mmu_pages;
911 unsigned long n_max_mmu_pages;
912 unsigned int indirect_shadow_pages;
913 u8 mmu_valid_gen;
914 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
915 /*
916 * Hash table of struct kvm_mmu_page.
917 */
918 struct list_head active_mmu_pages;
919 struct list_head zapped_obsolete_pages;
920 struct list_head lpage_disallowed_mmu_pages;
921 struct kvm_page_track_notifier_node mmu_sp_tracker;
922 struct kvm_page_track_notifier_head track_notifier_head;
923
924 struct list_head assigned_dev_head;
925 struct iommu_domain *iommu_domain;
926 bool iommu_noncoherent;
927 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
928 atomic_t noncoherent_dma_count;
929 #define __KVM_HAVE_ARCH_ASSIGNED_DEVICE
930 atomic_t assigned_device_count;
931 struct kvm_pic *vpic;
932 struct kvm_ioapic *vioapic;
933 struct kvm_pit *vpit;
934 atomic_t vapics_in_nmi_mode;
935 struct mutex apic_map_lock;
936 struct kvm_apic_map *apic_map;
937 atomic_t apic_map_dirty;
938
939 bool apic_access_page_done;
940 unsigned long apicv_inhibit_reasons;
941
942 gpa_t wall_clock;
943
944 bool mwait_in_guest;
945 bool hlt_in_guest;
946 bool pause_in_guest;
947 bool cstate_in_guest;
948
949 unsigned long irq_sources_bitmap;
950 s64 kvmclock_offset;
951 raw_spinlock_t tsc_write_lock;
952 u64 last_tsc_nsec;
953 u64 last_tsc_write;
954 u32 last_tsc_khz;
955 u64 cur_tsc_nsec;
956 u64 cur_tsc_write;
957 u64 cur_tsc_offset;
958 u64 cur_tsc_generation;
959 int nr_vcpus_matched_tsc;
960
961 spinlock_t pvclock_gtod_sync_lock;
962 bool use_master_clock;
963 u64 master_kernel_ns;
964 u64 master_cycle_now;
965 struct delayed_work kvmclock_update_work;
966 struct delayed_work kvmclock_sync_work;
967
968 struct kvm_xen_hvm_config xen_hvm_config;
969
970 /* reads protected by irq_srcu, writes by irq_lock */
971 struct hlist_head mask_notifier_list;
972
973 struct kvm_hv hyperv;
974
975 #ifdef CONFIG_KVM_MMU_AUDIT
976 int audit_point;
977 #endif
978
979 bool backwards_tsc_observed;
980 bool boot_vcpu_runs_old_kvmclock;
981 u32 bsp_vcpu_id;
982
983 u64 disabled_quirks;
984
985 enum kvm_irqchip_mode irqchip_mode;
986 u8 nr_reserved_ioapic_pins;
987
988 bool disabled_lapic_found;
989
990 bool x2apic_format;
991 bool x2apic_broadcast_quirk_disabled;
992
993 bool guest_can_read_msr_platform_info;
994 bool exception_payload_enabled;
995
996 bool bus_lock_detection_enabled;
997
998 /* Deflect RDMSR and WRMSR to user space when they trigger a #GP */
999 u32 user_space_msr_mask;
1000
1001 struct kvm_x86_msr_filter __rcu *msr_filter;
1002
1003 struct kvm_pmu_event_filter *pmu_event_filter;
1004 struct task_struct *nx_lpage_recovery_thread;
1005
1006 /*
1007 * Whether the TDP MMU is enabled for this VM. This contains a
1008 * snapshot of the TDP MMU module parameter from when the VM was
1009 * created and remains unchanged for the life of the VM. If this is
1010 * true, TDP MMU handler functions will run for various MMU
1011 * operations.
1012 */
1013 bool tdp_mmu_enabled;
1014
1015 /* List of struct tdp_mmu_pages being used as roots */
1016 struct list_head tdp_mmu_roots;
1017 /* List of struct tdp_mmu_pages not being used as roots */
1018 struct list_head tdp_mmu_pages;
1019 };
1020
1021 struct kvm_vm_stat {
1022 ulong mmu_shadow_zapped;
1023 ulong mmu_pte_write;
1024 ulong mmu_pde_zapped;
1025 ulong mmu_flooded;
1026 ulong mmu_recycled;
1027 ulong mmu_cache_miss;
1028 ulong mmu_unsync;
1029 ulong remote_tlb_flush;
1030 ulong lpages;
1031 ulong nx_lpage_splits;
1032 ulong max_mmu_page_hash_collisions;
1033 };
1034
1035 struct kvm_vcpu_stat {
1036 u64 pf_fixed;
1037 u64 pf_guest;
1038 u64 tlb_flush;
1039 u64 invlpg;
1040
1041 u64 exits;
1042 u64 io_exits;
1043 u64 mmio_exits;
1044 u64 signal_exits;
1045 u64 irq_window_exits;
1046 u64 nmi_window_exits;
1047 u64 l1d_flush;
1048 u64 halt_exits;
1049 u64 halt_successful_poll;
1050 u64 halt_attempted_poll;
1051 u64 halt_poll_invalid;
1052 u64 halt_wakeup;
1053 u64 request_irq_exits;
1054 u64 irq_exits;
1055 u64 host_state_reload;
1056 u64 fpu_reload;
1057 u64 insn_emulation;
1058 u64 insn_emulation_fail;
1059 u64 hypercalls;
1060 u64 irq_injections;
1061 u64 nmi_injections;
1062 u64 req_event;
1063 u64 halt_poll_success_ns;
1064 u64 halt_poll_fail_ns;
1065 u64 preemption_reported;
1066 u64 preemption_other;
1067 };
1068
1069 struct x86_instruction_info;
1070
1071 struct msr_data {
1072 bool host_initiated;
1073 u32 index;
1074 u64 data;
1075 };
1076
1077 struct kvm_lapic_irq {
1078 u32 vector;
1079 u16 delivery_mode;
1080 u16 dest_mode;
1081 bool level;
1082 u16 trig_mode;
1083 u32 shorthand;
1084 u32 dest_id;
1085 bool msi_redir_hint;
1086 };
1087
kvm_lapic_irq_dest_mode(bool dest_mode_logical)1088 static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode_logical)
1089 {
1090 return dest_mode_logical ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
1091 }
1092
1093 struct kvm_x86_ops {
1094 int (*hardware_enable)(void);
1095 void (*hardware_disable)(void);
1096 void (*hardware_unsetup)(void);
1097 bool (*cpu_has_accelerated_tpr)(void);
1098 bool (*has_emulated_msr)(u32 index);
1099 void (*vcpu_after_set_cpuid)(struct kvm_vcpu *vcpu);
1100
1101 unsigned int vm_size;
1102 int (*vm_init)(struct kvm *kvm);
1103 void (*vm_destroy)(struct kvm *kvm);
1104
1105 /* Create, but do not attach this VCPU */
1106 int (*vcpu_create)(struct kvm_vcpu *vcpu);
1107 void (*vcpu_free)(struct kvm_vcpu *vcpu);
1108 void (*vcpu_reset)(struct kvm_vcpu *vcpu, bool init_event);
1109
1110 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
1111 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
1112 void (*vcpu_put)(struct kvm_vcpu *vcpu);
1113
1114 void (*update_exception_bitmap)(struct kvm_vcpu *vcpu);
1115 int (*get_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
1116 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
1117 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
1118 void (*get_segment)(struct kvm_vcpu *vcpu,
1119 struct kvm_segment *var, int seg);
1120 int (*get_cpl)(struct kvm_vcpu *vcpu);
1121 void (*set_segment)(struct kvm_vcpu *vcpu,
1122 struct kvm_segment *var, int seg);
1123 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
1124 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
1125 bool (*is_valid_cr4)(struct kvm_vcpu *vcpu, unsigned long cr0);
1126 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
1127 int (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
1128 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1129 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1130 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1131 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
1132 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu);
1133 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
1134 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
1135 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
1136 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
1137
1138 void (*tlb_flush_all)(struct kvm_vcpu *vcpu);
1139 void (*tlb_flush_current)(struct kvm_vcpu *vcpu);
1140 int (*tlb_remote_flush)(struct kvm *kvm);
1141 int (*tlb_remote_flush_with_range)(struct kvm *kvm,
1142 struct kvm_tlb_range *range);
1143
1144 /*
1145 * Flush any TLB entries associated with the given GVA.
1146 * Does not need to flush GPA->HPA mappings.
1147 * Can potentially get non-canonical addresses through INVLPGs, which
1148 * the implementation may choose to ignore if appropriate.
1149 */
1150 void (*tlb_flush_gva)(struct kvm_vcpu *vcpu, gva_t addr);
1151
1152 /*
1153 * Flush any TLB entries created by the guest. Like tlb_flush_gva(),
1154 * does not need to flush GPA->HPA mappings.
1155 */
1156 void (*tlb_flush_guest)(struct kvm_vcpu *vcpu);
1157
1158 enum exit_fastpath_completion (*run)(struct kvm_vcpu *vcpu);
1159 int (*handle_exit)(struct kvm_vcpu *vcpu,
1160 enum exit_fastpath_completion exit_fastpath);
1161 int (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
1162 void (*update_emulated_instruction)(struct kvm_vcpu *vcpu);
1163 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
1164 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu);
1165 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
1166 unsigned char *hypercall_addr);
1167 void (*set_irq)(struct kvm_vcpu *vcpu);
1168 void (*set_nmi)(struct kvm_vcpu *vcpu);
1169 void (*queue_exception)(struct kvm_vcpu *vcpu);
1170 void (*cancel_injection)(struct kvm_vcpu *vcpu);
1171 int (*interrupt_allowed)(struct kvm_vcpu *vcpu, bool for_injection);
1172 int (*nmi_allowed)(struct kvm_vcpu *vcpu, bool for_injection);
1173 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
1174 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
1175 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
1176 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
1177 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
1178 bool (*check_apicv_inhibit_reasons)(ulong bit);
1179 void (*pre_update_apicv_exec_ctrl)(struct kvm *kvm, bool activate);
1180 void (*refresh_apicv_exec_ctrl)(struct kvm_vcpu *vcpu);
1181 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
1182 void (*hwapic_isr_update)(struct kvm_vcpu *vcpu, int isr);
1183 bool (*guest_apic_has_interrupt)(struct kvm_vcpu *vcpu);
1184 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
1185 void (*set_virtual_apic_mode)(struct kvm_vcpu *vcpu);
1186 void (*set_apic_access_page_addr)(struct kvm_vcpu *vcpu);
1187 int (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
1188 int (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
1189 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
1190 int (*set_identity_map_addr)(struct kvm *kvm, u64 ident_addr);
1191 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
1192
1193 void (*load_mmu_pgd)(struct kvm_vcpu *vcpu, unsigned long pgd,
1194 int pgd_level);
1195
1196 bool (*has_wbinvd_exit)(void);
1197
1198 /* Returns actual tsc_offset set in active VMCS */
1199 u64 (*write_l1_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
1200
1201 /*
1202 * Retrieve somewhat arbitrary exit information. Intended to be used
1203 * only from within tracepoints to avoid VMREADs when tracing is off.
1204 */
1205 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2,
1206 u32 *exit_int_info, u32 *exit_int_info_err_code);
1207
1208 int (*check_intercept)(struct kvm_vcpu *vcpu,
1209 struct x86_instruction_info *info,
1210 enum x86_intercept_stage stage,
1211 struct x86_exception *exception);
1212 void (*handle_exit_irqoff)(struct kvm_vcpu *vcpu);
1213
1214 void (*request_immediate_exit)(struct kvm_vcpu *vcpu);
1215
1216 void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
1217
1218 /*
1219 * Arch-specific dirty logging hooks. These hooks are only supposed to
1220 * be valid if the specific arch has hardware-accelerated dirty logging
1221 * mechanism. Currently only for PML on VMX.
1222 *
1223 * - slot_enable_log_dirty:
1224 * called when enabling log dirty mode for the slot.
1225 * - slot_disable_log_dirty:
1226 * called when disabling log dirty mode for the slot.
1227 * also called when slot is created with log dirty disabled.
1228 * - flush_log_dirty:
1229 * called before reporting dirty_bitmap to userspace.
1230 * - enable_log_dirty_pt_masked:
1231 * called when reenabling log dirty for the GFNs in the mask after
1232 * corresponding bits are cleared in slot->dirty_bitmap.
1233 */
1234 void (*slot_enable_log_dirty)(struct kvm *kvm,
1235 struct kvm_memory_slot *slot);
1236 void (*slot_disable_log_dirty)(struct kvm *kvm,
1237 struct kvm_memory_slot *slot);
1238 void (*flush_log_dirty)(struct kvm *kvm);
1239 void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
1240 struct kvm_memory_slot *slot,
1241 gfn_t offset, unsigned long mask);
1242
1243 /* pmu operations of sub-arch */
1244 const struct kvm_pmu_ops *pmu_ops;
1245 const struct kvm_x86_nested_ops *nested_ops;
1246
1247 /*
1248 * Architecture specific hooks for vCPU blocking due to
1249 * HLT instruction.
1250 * Returns for .pre_block():
1251 * - 0 means continue to block the vCPU.
1252 * - 1 means we cannot block the vCPU since some event
1253 * happens during this period, such as, 'ON' bit in
1254 * posted-interrupts descriptor is set.
1255 */
1256 int (*pre_block)(struct kvm_vcpu *vcpu);
1257 void (*post_block)(struct kvm_vcpu *vcpu);
1258
1259 void (*vcpu_blocking)(struct kvm_vcpu *vcpu);
1260 void (*vcpu_unblocking)(struct kvm_vcpu *vcpu);
1261
1262 int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
1263 uint32_t guest_irq, bool set);
1264 void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu);
1265 bool (*dy_apicv_has_pending_interrupt)(struct kvm_vcpu *vcpu);
1266
1267 int (*set_hv_timer)(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc,
1268 bool *expired);
1269 void (*cancel_hv_timer)(struct kvm_vcpu *vcpu);
1270
1271 void (*setup_mce)(struct kvm_vcpu *vcpu);
1272
1273 int (*smi_allowed)(struct kvm_vcpu *vcpu, bool for_injection);
1274 int (*pre_enter_smm)(struct kvm_vcpu *vcpu, char *smstate);
1275 int (*pre_leave_smm)(struct kvm_vcpu *vcpu, const char *smstate);
1276 void (*enable_smi_window)(struct kvm_vcpu *vcpu);
1277
1278 int (*mem_enc_op)(struct kvm *kvm, void __user *argp);
1279 int (*mem_enc_reg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
1280 int (*mem_enc_unreg_region)(struct kvm *kvm, struct kvm_enc_region *argp);
1281 void (*guest_memory_reclaimed)(struct kvm *kvm);
1282
1283 int (*get_msr_feature)(struct kvm_msr_entry *entry);
1284
1285 bool (*can_emulate_instruction)(struct kvm_vcpu *vcpu, void *insn, int insn_len);
1286
1287 bool (*apic_init_signal_blocked)(struct kvm_vcpu *vcpu);
1288 int (*enable_direct_tlbflush)(struct kvm_vcpu *vcpu);
1289
1290 void (*migrate_timers)(struct kvm_vcpu *vcpu);
1291 void (*msr_filter_changed)(struct kvm_vcpu *vcpu);
1292 };
1293
1294 struct kvm_x86_nested_ops {
1295 void (*leave_nested)(struct kvm_vcpu *vcpu);
1296 int (*check_events)(struct kvm_vcpu *vcpu);
1297 bool (*hv_timer_pending)(struct kvm_vcpu *vcpu);
1298 int (*get_state)(struct kvm_vcpu *vcpu,
1299 struct kvm_nested_state __user *user_kvm_nested_state,
1300 unsigned user_data_size);
1301 int (*set_state)(struct kvm_vcpu *vcpu,
1302 struct kvm_nested_state __user *user_kvm_nested_state,
1303 struct kvm_nested_state *kvm_state);
1304 bool (*get_nested_state_pages)(struct kvm_vcpu *vcpu);
1305 int (*write_log_dirty)(struct kvm_vcpu *vcpu, gpa_t l2_gpa);
1306
1307 int (*enable_evmcs)(struct kvm_vcpu *vcpu,
1308 uint16_t *vmcs_version);
1309 uint16_t (*get_evmcs_version)(struct kvm_vcpu *vcpu);
1310 };
1311
1312 struct kvm_x86_init_ops {
1313 int (*cpu_has_kvm_support)(void);
1314 int (*disabled_by_bios)(void);
1315 int (*check_processor_compatibility)(void);
1316 int (*hardware_setup)(void);
1317 bool (*intel_pt_intr_in_guest)(void);
1318
1319 struct kvm_x86_ops *runtime_ops;
1320 };
1321
1322 struct kvm_arch_async_pf {
1323 u32 token;
1324 gfn_t gfn;
1325 unsigned long cr3;
1326 bool direct_map;
1327 };
1328
1329 extern u64 __read_mostly host_efer;
1330 extern bool __read_mostly allow_smaller_maxphyaddr;
1331 extern struct kvm_x86_ops kvm_x86_ops;
1332
1333 #define __KVM_HAVE_ARCH_VM_ALLOC
kvm_arch_alloc_vm(void)1334 static inline struct kvm *kvm_arch_alloc_vm(void)
1335 {
1336 return __vmalloc(kvm_x86_ops.vm_size, GFP_KERNEL_ACCOUNT | __GFP_ZERO);
1337 }
1338 void kvm_arch_free_vm(struct kvm *kvm);
1339
1340 #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
kvm_arch_flush_remote_tlb(struct kvm * kvm)1341 static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
1342 {
1343 if (kvm_x86_ops.tlb_remote_flush &&
1344 !kvm_x86_ops.tlb_remote_flush(kvm))
1345 return 0;
1346 else
1347 return -ENOTSUPP;
1348 }
1349
1350 void __init kvm_mmu_x86_module_init(void);
1351 int kvm_mmu_vendor_module_init(void);
1352 void kvm_mmu_vendor_module_exit(void);
1353
1354 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
1355 int kvm_mmu_create(struct kvm_vcpu *vcpu);
1356 void kvm_mmu_init_vm(struct kvm *kvm);
1357 void kvm_mmu_uninit_vm(struct kvm *kvm);
1358 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
1359 u64 dirty_mask, u64 nx_mask, u64 x_mask, u64 p_mask,
1360 u64 acc_track_mask, u64 me_mask);
1361
1362 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
1363 void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
1364 struct kvm_memory_slot *memslot,
1365 int start_level);
1366 void kvm_mmu_zap_collapsible_sptes(struct kvm *kvm,
1367 const struct kvm_memory_slot *memslot);
1368 void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
1369 struct kvm_memory_slot *memslot);
1370 void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
1371 struct kvm_memory_slot *memslot);
1372 void kvm_mmu_slot_set_dirty(struct kvm *kvm,
1373 struct kvm_memory_slot *memslot);
1374 void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm,
1375 struct kvm_memory_slot *slot,
1376 gfn_t gfn_offset, unsigned long mask);
1377 void kvm_mmu_zap_all(struct kvm *kvm);
1378 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen);
1379 unsigned long kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm);
1380 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long kvm_nr_mmu_pages);
1381
1382 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
1383 bool pdptrs_changed(struct kvm_vcpu *vcpu);
1384
1385 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
1386 const void *val, int bytes);
1387
1388 struct kvm_irq_mask_notifier {
1389 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
1390 int irq;
1391 struct hlist_node link;
1392 };
1393
1394 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
1395 struct kvm_irq_mask_notifier *kimn);
1396 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
1397 struct kvm_irq_mask_notifier *kimn);
1398 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
1399 bool mask);
1400
1401 extern bool tdp_enabled;
1402
1403 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
1404
1405 /* control of guest tsc rate supported? */
1406 extern bool kvm_has_tsc_control;
1407 /* maximum supported tsc_khz for guests */
1408 extern u32 kvm_max_guest_tsc_khz;
1409 /* number of bits of the fractional part of the TSC scaling ratio */
1410 extern u8 kvm_tsc_scaling_ratio_frac_bits;
1411 /* maximum allowed value of TSC scaling ratio */
1412 extern u64 kvm_max_tsc_scaling_ratio;
1413 /* 1ull << kvm_tsc_scaling_ratio_frac_bits */
1414 extern u64 kvm_default_tsc_scaling_ratio;
1415
1416 extern u64 kvm_mce_cap_supported;
1417
1418 /*
1419 * EMULTYPE_NO_DECODE - Set when re-emulating an instruction (after completing
1420 * userspace I/O) to indicate that the emulation context
1421 * should be resued as is, i.e. skip initialization of
1422 * emulation context, instruction fetch and decode.
1423 *
1424 * EMULTYPE_TRAP_UD - Set when emulating an intercepted #UD from hardware.
1425 * Indicates that only select instructions (tagged with
1426 * EmulateOnUD) should be emulated (to minimize the emulator
1427 * attack surface). See also EMULTYPE_TRAP_UD_FORCED.
1428 *
1429 * EMULTYPE_SKIP - Set when emulating solely to skip an instruction, i.e. to
1430 * decode the instruction length. For use *only* by
1431 * kvm_x86_ops.skip_emulated_instruction() implementations.
1432 *
1433 * EMULTYPE_ALLOW_RETRY_PF - Set when the emulator should resume the guest to
1434 * retry native execution under certain conditions,
1435 * Can only be set in conjunction with EMULTYPE_PF.
1436 *
1437 * EMULTYPE_TRAP_UD_FORCED - Set when emulating an intercepted #UD that was
1438 * triggered by KVM's magic "force emulation" prefix,
1439 * which is opt in via module param (off by default).
1440 * Bypasses EmulateOnUD restriction despite emulating
1441 * due to an intercepted #UD (see EMULTYPE_TRAP_UD).
1442 * Used to test the full emulator from userspace.
1443 *
1444 * EMULTYPE_VMWARE_GP - Set when emulating an intercepted #GP for VMware
1445 * backdoor emulation, which is opt in via module param.
1446 * VMware backoor emulation handles select instructions
1447 * and reinjects the #GP for all other cases.
1448 *
1449 * EMULTYPE_PF - Set when emulating MMIO by way of an intercepted #PF, in which
1450 * case the CR2/GPA value pass on the stack is valid.
1451 */
1452 #define EMULTYPE_NO_DECODE (1 << 0)
1453 #define EMULTYPE_TRAP_UD (1 << 1)
1454 #define EMULTYPE_SKIP (1 << 2)
1455 #define EMULTYPE_ALLOW_RETRY_PF (1 << 3)
1456 #define EMULTYPE_TRAP_UD_FORCED (1 << 4)
1457 #define EMULTYPE_VMWARE_GP (1 << 5)
1458 #define EMULTYPE_PF (1 << 6)
1459
1460 int kvm_emulate_instruction(struct kvm_vcpu *vcpu, int emulation_type);
1461 int kvm_emulate_instruction_from_buffer(struct kvm_vcpu *vcpu,
1462 void *insn, int insn_len);
1463
1464 void kvm_enable_efer_bits(u64);
1465 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
1466 int __kvm_get_msr(struct kvm_vcpu *vcpu, u32 index, u64 *data, bool host_initiated);
1467 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 index, u64 *data);
1468 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 index, u64 data);
1469 int kvm_emulate_rdmsr(struct kvm_vcpu *vcpu);
1470 int kvm_emulate_wrmsr(struct kvm_vcpu *vcpu);
1471
1472 int kvm_fast_pio(struct kvm_vcpu *vcpu, int size, unsigned short port, int in);
1473 int kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
1474 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
1475 int kvm_vcpu_halt(struct kvm_vcpu *vcpu);
1476 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
1477
1478 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
1479 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
1480 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
1481
1482 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
1483 int reason, bool has_error_code, u32 error_code);
1484
1485 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
1486 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
1487 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
1488 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
1489 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
1490 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
1491 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
1492 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
1493 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
1494 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
1495
1496 int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
1497 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
1498
1499 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
1500 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
1501 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
1502
1503 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
1504 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
1505 void kvm_queue_exception_p(struct kvm_vcpu *vcpu, unsigned nr, unsigned long payload);
1506 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
1507 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
1508 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
1509 bool kvm_inject_emulated_page_fault(struct kvm_vcpu *vcpu,
1510 struct x86_exception *fault);
1511 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
1512 gfn_t gfn, void *data, int offset, int len,
1513 u32 access);
1514 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
1515 bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr);
1516
__kvm_irq_line_state(unsigned long * irq_state,int irq_source_id,int level)1517 static inline int __kvm_irq_line_state(unsigned long *irq_state,
1518 int irq_source_id, int level)
1519 {
1520 /* Logical OR for level trig interrupt */
1521 if (level)
1522 __set_bit(irq_source_id, irq_state);
1523 else
1524 __clear_bit(irq_source_id, irq_state);
1525
1526 return !!(*irq_state);
1527 }
1528
1529 #define KVM_MMU_ROOT_CURRENT BIT(0)
1530 #define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i)
1531 #define KVM_MMU_ROOTS_ALL (~0UL)
1532
1533 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
1534 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
1535
1536 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
1537
1538 void kvm_update_dr7(struct kvm_vcpu *vcpu);
1539
1540 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
1541 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
1542 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
1543 int kvm_mmu_load(struct kvm_vcpu *vcpu);
1544 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
1545 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
1546 void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
1547 ulong roots_to_free);
1548 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
1549 struct x86_exception *exception);
1550 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
1551 struct x86_exception *exception);
1552 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
1553 struct x86_exception *exception);
1554 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
1555 struct x86_exception *exception);
1556 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
1557 struct x86_exception *exception);
1558
1559 bool kvm_apicv_activated(struct kvm *kvm);
1560 void kvm_apicv_init(struct kvm *kvm, bool enable);
1561 void kvm_vcpu_update_apicv(struct kvm_vcpu *vcpu);
1562 void kvm_request_apicv_update(struct kvm *kvm, bool activate,
1563 unsigned long bit);
1564
1565 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
1566
1567 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u64 error_code,
1568 void *insn, int insn_len);
1569 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
1570 void kvm_mmu_invalidate_gva(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
1571 gva_t gva, hpa_t root_hpa);
1572 void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid);
1573 void kvm_mmu_new_pgd(struct kvm_vcpu *vcpu, gpa_t new_pgd, bool skip_tlb_flush,
1574 bool skip_mmu_sync);
1575
1576 void kvm_configure_mmu(bool enable_tdp, int tdp_max_root_level,
1577 int tdp_huge_page_level);
1578
kvm_read_ldt(void)1579 static inline u16 kvm_read_ldt(void)
1580 {
1581 u16 ldt;
1582 asm("sldt %0" : "=g"(ldt));
1583 return ldt;
1584 }
1585
kvm_load_ldt(u16 sel)1586 static inline void kvm_load_ldt(u16 sel)
1587 {
1588 asm("lldt %0" : : "rm"(sel));
1589 }
1590
1591 #ifdef CONFIG_X86_64
read_msr(unsigned long msr)1592 static inline unsigned long read_msr(unsigned long msr)
1593 {
1594 u64 value;
1595
1596 rdmsrl(msr, value);
1597 return value;
1598 }
1599 #endif
1600
get_rdx_init_val(void)1601 static inline u32 get_rdx_init_val(void)
1602 {
1603 return 0x600; /* P6 family */
1604 }
1605
kvm_inject_gp(struct kvm_vcpu * vcpu,u32 error_code)1606 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
1607 {
1608 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
1609 }
1610
1611 #define TSS_IOPB_BASE_OFFSET 0x66
1612 #define TSS_BASE_SIZE 0x68
1613 #define TSS_IOPB_SIZE (65536 / 8)
1614 #define TSS_REDIRECTION_SIZE (256 / 8)
1615 #define RMODE_TSS_SIZE \
1616 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
1617
1618 enum {
1619 TASK_SWITCH_CALL = 0,
1620 TASK_SWITCH_IRET = 1,
1621 TASK_SWITCH_JMP = 2,
1622 TASK_SWITCH_GATE = 3,
1623 };
1624
1625 #define HF_GIF_MASK (1 << 0)
1626 #define HF_NMI_MASK (1 << 3)
1627 #define HF_IRET_MASK (1 << 4)
1628 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1629 #define HF_SMM_MASK (1 << 6)
1630 #define HF_SMM_INSIDE_NMI_MASK (1 << 7)
1631
1632 #define __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
1633 #define KVM_ADDRESS_SPACE_NUM 2
1634
1635 #define kvm_arch_vcpu_memslots_id(vcpu) ((vcpu)->arch.hflags & HF_SMM_MASK ? 1 : 0)
1636 #define kvm_memslots_for_spte_role(kvm, role) __kvm_memslots(kvm, (role).smm)
1637
1638 asmlinkage void kvm_spurious_fault(void);
1639
1640 /*
1641 * Hardware virtualization extension instructions may fault if a
1642 * reboot turns off virtualization while processes are running.
1643 * Usually after catching the fault we just panic; during reboot
1644 * instead the instruction is ignored.
1645 */
1646 #define __kvm_handle_fault_on_reboot(insn) \
1647 "666: \n\t" \
1648 insn "\n\t" \
1649 "jmp 668f \n\t" \
1650 "667: \n\t" \
1651 "1: \n\t" \
1652 ".pushsection .discard.instr_begin \n\t" \
1653 ".long 1b - . \n\t" \
1654 ".popsection \n\t" \
1655 "call kvm_spurious_fault \n\t" \
1656 "1: \n\t" \
1657 ".pushsection .discard.instr_end \n\t" \
1658 ".long 1b - . \n\t" \
1659 ".popsection \n\t" \
1660 "668: \n\t" \
1661 _ASM_EXTABLE(666b, 667b)
1662
1663 #define KVM_ARCH_WANT_MMU_NOTIFIER
1664 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end,
1665 unsigned flags);
1666 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
1667 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1668 int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1669 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1670 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1671 int kvm_cpu_has_extint(struct kvm_vcpu *v);
1672 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1673 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1674 void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event);
1675 void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu);
1676
1677 int kvm_pv_send_ipi(struct kvm *kvm, unsigned long ipi_bitmap_low,
1678 unsigned long ipi_bitmap_high, u32 min,
1679 unsigned long icr, int op_64_bit);
1680
1681 void kvm_define_user_return_msr(unsigned index, u32 msr);
1682 int kvm_probe_user_return_msr(u32 msr);
1683 int kvm_set_user_return_msr(unsigned index, u64 val, u64 mask);
1684
1685 u64 kvm_scale_tsc(struct kvm_vcpu *vcpu, u64 tsc);
1686 u64 kvm_read_l1_tsc(struct kvm_vcpu *vcpu, u64 host_tsc);
1687
1688 unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu);
1689 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1690
1691 void kvm_make_mclock_inprogress_request(struct kvm *kvm);
1692 void kvm_make_scan_ioapic_request(struct kvm *kvm);
1693 void kvm_make_scan_ioapic_request_mask(struct kvm *kvm,
1694 unsigned long *vcpu_bitmap);
1695
1696 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1697 struct kvm_async_pf *work);
1698 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1699 struct kvm_async_pf *work);
1700 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1701 struct kvm_async_pf *work);
1702 void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu);
1703 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1704 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1705
1706 int kvm_skip_emulated_instruction(struct kvm_vcpu *vcpu);
1707 int kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1708 void __kvm_request_immediate_exit(struct kvm_vcpu *vcpu);
1709
1710 int kvm_is_in_guest(void);
1711
1712 int __x86_set_memory_region(struct kvm *kvm, int id, gpa_t gpa, u32 size);
1713 bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu);
1714 bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu);
1715
1716 bool kvm_intr_is_single_vcpu(struct kvm *kvm, struct kvm_lapic_irq *irq,
1717 struct kvm_vcpu **dest_vcpu);
1718
1719 void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
1720 struct kvm_lapic_irq *irq);
1721
kvm_irq_is_postable(struct kvm_lapic_irq * irq)1722 static inline bool kvm_irq_is_postable(struct kvm_lapic_irq *irq)
1723 {
1724 /* We can only post Fixed and LowPrio IRQs */
1725 return (irq->delivery_mode == APIC_DM_FIXED ||
1726 irq->delivery_mode == APIC_DM_LOWEST);
1727 }
1728
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1729 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu)
1730 {
1731 if (kvm_x86_ops.vcpu_blocking)
1732 kvm_x86_ops.vcpu_blocking(vcpu);
1733 }
1734
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1735 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu)
1736 {
1737 if (kvm_x86_ops.vcpu_unblocking)
1738 kvm_x86_ops.vcpu_unblocking(vcpu);
1739 }
1740
kvm_arch_vcpu_block_finish(struct kvm_vcpu * vcpu)1741 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
1742
kvm_cpu_get_apicid(int mps_cpu)1743 static inline int kvm_cpu_get_apicid(int mps_cpu)
1744 {
1745 #ifdef CONFIG_X86_LOCAL_APIC
1746 return default_cpu_present_to_apicid(mps_cpu);
1747 #else
1748 WARN_ON_ONCE(1);
1749 return BAD_APICID;
1750 #endif
1751 }
1752
1753 #define put_smstate(type, buf, offset, val) \
1754 *(type *)((buf) + (offset) - 0x7e00) = val
1755
1756 #define GET_SMSTATE(type, buf, offset) \
1757 (*(type *)((buf) + (offset) - 0x7e00))
1758
1759 #endif /* _ASM_X86_KVM_HOST_H */
1760