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powerpc: use _GLOBAL_TOC for memmove
[deliverable/linux.git] / arch / x86 / include / asm / kvm_host.h
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 125
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_MMIO_SIZE 16
42
43 #define KVM_PIO_PAGE_OFFSET 1
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
45
46 #define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
47
48 #define CR0_RESERVED_BITS \
49 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
50 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
51 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
52
53 #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL
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 SELECTOR_TI_MASK (1 << 2)
86 #define SELECTOR_RPL_MASK 0x03
87
88 #define IOPL_SHIFT 12
89
90 #define KVM_PERMILLE_MMU_PAGES 20
91 #define KVM_MIN_ALLOC_MMU_PAGES 64
92 #define KVM_MMU_HASH_SHIFT 10
93 #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
94 #define KVM_MIN_FREE_MMU_PAGES 5
95 #define KVM_REFILL_PAGES 25
96 #define KVM_MAX_CPUID_ENTRIES 80
97 #define KVM_NR_FIXED_MTRR_REGION 88
98 #define KVM_NR_VAR_MTRR 8
99
100 #define ASYNC_PF_PER_VCPU 64
101
102 struct kvm_vcpu;
103 struct kvm;
104 struct kvm_async_pf;
105
106 enum kvm_reg {
107 VCPU_REGS_RAX = 0,
108 VCPU_REGS_RCX = 1,
109 VCPU_REGS_RDX = 2,
110 VCPU_REGS_RBX = 3,
111 VCPU_REGS_RSP = 4,
112 VCPU_REGS_RBP = 5,
113 VCPU_REGS_RSI = 6,
114 VCPU_REGS_RDI = 7,
115 #ifdef CONFIG_X86_64
116 VCPU_REGS_R8 = 8,
117 VCPU_REGS_R9 = 9,
118 VCPU_REGS_R10 = 10,
119 VCPU_REGS_R11 = 11,
120 VCPU_REGS_R12 = 12,
121 VCPU_REGS_R13 = 13,
122 VCPU_REGS_R14 = 14,
123 VCPU_REGS_R15 = 15,
124 #endif
125 VCPU_REGS_RIP,
126 NR_VCPU_REGS
127 };
128
129 enum kvm_reg_ex {
130 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
131 VCPU_EXREG_CR3,
132 VCPU_EXREG_RFLAGS,
133 VCPU_EXREG_SEGMENTS,
134 };
135
136 enum {
137 VCPU_SREG_ES,
138 VCPU_SREG_CS,
139 VCPU_SREG_SS,
140 VCPU_SREG_DS,
141 VCPU_SREG_FS,
142 VCPU_SREG_GS,
143 VCPU_SREG_TR,
144 VCPU_SREG_LDTR,
145 };
146
147 #include <asm/kvm_emulate.h>
148
149 #define KVM_NR_MEM_OBJS 40
150
151 #define KVM_NR_DB_REGS 4
152
153 #define DR6_BD (1 << 13)
154 #define DR6_BS (1 << 14)
155 #define DR6_FIXED_1 0xffff0ff0
156 #define DR6_VOLATILE 0x0000e00f
157
158 #define DR7_BP_EN_MASK 0x000000ff
159 #define DR7_GE (1 << 9)
160 #define DR7_GD (1 << 13)
161 #define DR7_FIXED_1 0x00000400
162 #define DR7_VOLATILE 0xffff23ff
163
164 /* apic attention bits */
165 #define KVM_APIC_CHECK_VAPIC 0
166 /*
167 * The following bit is set with PV-EOI, unset on EOI.
168 * We detect PV-EOI changes by guest by comparing
169 * this bit with PV-EOI in guest memory.
170 * See the implementation in apic_update_pv_eoi.
171 */
172 #define KVM_APIC_PV_EOI_PENDING 1
173
174 /*
175 * We don't want allocation failures within the mmu code, so we preallocate
176 * enough memory for a single page fault in a cache.
177 */
178 struct kvm_mmu_memory_cache {
179 int nobjs;
180 void *objects[KVM_NR_MEM_OBJS];
181 };
182
183 /*
184 * kvm_mmu_page_role, below, is defined as:
185 *
186 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
187 * bits 4:7 - page table level for this shadow (1-4)
188 * bits 8:9 - page table quadrant for 2-level guests
189 * bit 16 - direct mapping of virtual to physical mapping at gfn
190 * used for real mode and two-dimensional paging
191 * bits 17:19 - common access permissions for all ptes in this shadow page
192 */
193 union kvm_mmu_page_role {
194 unsigned word;
195 struct {
196 unsigned level:4;
197 unsigned cr4_pae:1;
198 unsigned quadrant:2;
199 unsigned pad_for_nice_hex_output:6;
200 unsigned direct:1;
201 unsigned access:3;
202 unsigned invalid:1;
203 unsigned nxe:1;
204 unsigned cr0_wp:1;
205 unsigned smep_andnot_wp:1;
206 };
207 };
208
209 struct kvm_mmu_page {
210 struct list_head link;
211 struct hlist_node hash_link;
212
213 /*
214 * The following two entries are used to key the shadow page in the
215 * hash table.
216 */
217 gfn_t gfn;
218 union kvm_mmu_page_role role;
219
220 u64 *spt;
221 /* hold the gfn of each spte inside spt */
222 gfn_t *gfns;
223 bool unsync;
224 int root_count; /* Currently serving as active root */
225 unsigned int unsync_children;
226 unsigned long parent_ptes; /* Reverse mapping for parent_pte */
227
228 /* The page is obsolete if mmu_valid_gen != kvm->arch.mmu_valid_gen. */
229 unsigned long mmu_valid_gen;
230
231 DECLARE_BITMAP(unsync_child_bitmap, 512);
232
233 #ifdef CONFIG_X86_32
234 /*
235 * Used out of the mmu-lock to avoid reading spte values while an
236 * update is in progress; see the comments in __get_spte_lockless().
237 */
238 int clear_spte_count;
239 #endif
240
241 /* Number of writes since the last time traversal visited this page. */
242 int write_flooding_count;
243 };
244
245 struct kvm_pio_request {
246 unsigned long count;
247 int in;
248 int port;
249 int size;
250 };
251
252 /*
253 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
254 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
255 * mode.
256 */
257 struct kvm_mmu {
258 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
259 unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
260 u64 (*get_pdptr)(struct kvm_vcpu *vcpu, int index);
261 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
262 bool prefault);
263 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
264 struct x86_exception *fault);
265 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
266 struct x86_exception *exception);
267 gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
268 int (*sync_page)(struct kvm_vcpu *vcpu,
269 struct kvm_mmu_page *sp);
270 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
271 void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
272 u64 *spte, const void *pte);
273 hpa_t root_hpa;
274 int root_level;
275 int shadow_root_level;
276 union kvm_mmu_page_role base_role;
277 bool direct_map;
278
279 /*
280 * Bitmap; bit set = permission fault
281 * Byte index: page fault error code [4:1]
282 * Bit index: pte permissions in ACC_* format
283 */
284 u8 permissions[16];
285
286 u64 *pae_root;
287 u64 *lm_root;
288 u64 rsvd_bits_mask[2][4];
289 u64 bad_mt_xwr;
290
291 /*
292 * Bitmap: bit set = last pte in walk
293 * index[0:1]: level (zero-based)
294 * index[2]: pte.ps
295 */
296 u8 last_pte_bitmap;
297
298 bool nx;
299
300 u64 pdptrs[4]; /* pae */
301 };
302
303 enum pmc_type {
304 KVM_PMC_GP = 0,
305 KVM_PMC_FIXED,
306 };
307
308 struct kvm_pmc {
309 enum pmc_type type;
310 u8 idx;
311 u64 counter;
312 u64 eventsel;
313 struct perf_event *perf_event;
314 struct kvm_vcpu *vcpu;
315 };
316
317 struct kvm_pmu {
318 unsigned nr_arch_gp_counters;
319 unsigned nr_arch_fixed_counters;
320 unsigned available_event_types;
321 u64 fixed_ctr_ctrl;
322 u64 global_ctrl;
323 u64 global_status;
324 u64 global_ovf_ctrl;
325 u64 counter_bitmask[2];
326 u64 global_ctrl_mask;
327 u64 reserved_bits;
328 u8 version;
329 struct kvm_pmc gp_counters[INTEL_PMC_MAX_GENERIC];
330 struct kvm_pmc fixed_counters[INTEL_PMC_MAX_FIXED];
331 struct irq_work irq_work;
332 u64 reprogram_pmi;
333 };
334
335 enum {
336 KVM_DEBUGREG_BP_ENABLED = 1,
337 KVM_DEBUGREG_WONT_EXIT = 2,
338 };
339
340 struct kvm_vcpu_arch {
341 /*
342 * rip and regs accesses must go through
343 * kvm_{register,rip}_{read,write} functions.
344 */
345 unsigned long regs[NR_VCPU_REGS];
346 u32 regs_avail;
347 u32 regs_dirty;
348
349 unsigned long cr0;
350 unsigned long cr0_guest_owned_bits;
351 unsigned long cr2;
352 unsigned long cr3;
353 unsigned long cr4;
354 unsigned long cr4_guest_owned_bits;
355 unsigned long cr8;
356 u32 hflags;
357 u64 efer;
358 u64 apic_base;
359 struct kvm_lapic *apic; /* kernel irqchip context */
360 unsigned long apic_attention;
361 int32_t apic_arb_prio;
362 int mp_state;
363 u64 ia32_misc_enable_msr;
364 bool tpr_access_reporting;
365
366 /*
367 * Paging state of the vcpu
368 *
369 * If the vcpu runs in guest mode with two level paging this still saves
370 * the paging mode of the l1 guest. This context is always used to
371 * handle faults.
372 */
373 struct kvm_mmu mmu;
374
375 /*
376 * Paging state of an L2 guest (used for nested npt)
377 *
378 * This context will save all necessary information to walk page tables
379 * of the an L2 guest. This context is only initialized for page table
380 * walking and not for faulting since we never handle l2 page faults on
381 * the host.
382 */
383 struct kvm_mmu nested_mmu;
384
385 /*
386 * Pointer to the mmu context currently used for
387 * gva_to_gpa translations.
388 */
389 struct kvm_mmu *walk_mmu;
390
391 struct kvm_mmu_memory_cache mmu_pte_list_desc_cache;
392 struct kvm_mmu_memory_cache mmu_page_cache;
393 struct kvm_mmu_memory_cache mmu_page_header_cache;
394
395 struct fpu guest_fpu;
396 u64 xcr0;
397 u64 guest_supported_xcr0;
398 u32 guest_xstate_size;
399
400 struct kvm_pio_request pio;
401 void *pio_data;
402
403 u8 event_exit_inst_len;
404
405 struct kvm_queued_exception {
406 bool pending;
407 bool has_error_code;
408 bool reinject;
409 u8 nr;
410 u32 error_code;
411 } exception;
412
413 struct kvm_queued_interrupt {
414 bool pending;
415 bool soft;
416 u8 nr;
417 } interrupt;
418
419 int halt_request; /* real mode on Intel only */
420
421 int cpuid_nent;
422 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
423 /* emulate context */
424
425 struct x86_emulate_ctxt emulate_ctxt;
426 bool emulate_regs_need_sync_to_vcpu;
427 bool emulate_regs_need_sync_from_vcpu;
428 int (*complete_userspace_io)(struct kvm_vcpu *vcpu);
429
430 gpa_t time;
431 struct pvclock_vcpu_time_info hv_clock;
432 unsigned int hw_tsc_khz;
433 struct gfn_to_hva_cache pv_time;
434 bool pv_time_enabled;
435 /* set guest stopped flag in pvclock flags field */
436 bool pvclock_set_guest_stopped_request;
437
438 struct {
439 u64 msr_val;
440 u64 last_steal;
441 u64 accum_steal;
442 struct gfn_to_hva_cache stime;
443 struct kvm_steal_time steal;
444 } st;
445
446 u64 last_guest_tsc;
447 u64 last_host_tsc;
448 u64 tsc_offset_adjustment;
449 u64 this_tsc_nsec;
450 u64 this_tsc_write;
451 u8 this_tsc_generation;
452 bool tsc_catchup;
453 bool tsc_always_catchup;
454 s8 virtual_tsc_shift;
455 u32 virtual_tsc_mult;
456 u32 virtual_tsc_khz;
457 s64 ia32_tsc_adjust_msr;
458
459 atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
460 unsigned nmi_pending; /* NMI queued after currently running handler */
461 bool nmi_injected; /* Trying to inject an NMI this entry */
462
463 struct mtrr_state_type mtrr_state;
464 u32 pat;
465
466 unsigned switch_db_regs;
467 unsigned long db[KVM_NR_DB_REGS];
468 unsigned long dr6;
469 unsigned long dr7;
470 unsigned long eff_db[KVM_NR_DB_REGS];
471 unsigned long guest_debug_dr7;
472
473 u64 mcg_cap;
474 u64 mcg_status;
475 u64 mcg_ctl;
476 u64 *mce_banks;
477
478 /* Cache MMIO info */
479 u64 mmio_gva;
480 unsigned access;
481 gfn_t mmio_gfn;
482
483 struct kvm_pmu pmu;
484
485 /* used for guest single stepping over the given code position */
486 unsigned long singlestep_rip;
487
488 /* fields used by HYPER-V emulation */
489 u64 hv_vapic;
490
491 cpumask_var_t wbinvd_dirty_mask;
492
493 unsigned long last_retry_eip;
494 unsigned long last_retry_addr;
495
496 struct {
497 bool halted;
498 gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
499 struct gfn_to_hva_cache data;
500 u64 msr_val;
501 u32 id;
502 bool send_user_only;
503 } apf;
504
505 /* OSVW MSRs (AMD only) */
506 struct {
507 u64 length;
508 u64 status;
509 } osvw;
510
511 struct {
512 u64 msr_val;
513 struct gfn_to_hva_cache data;
514 } pv_eoi;
515
516 /*
517 * Indicate whether the access faults on its page table in guest
518 * which is set when fix page fault and used to detect unhandeable
519 * instruction.
520 */
521 bool write_fault_to_shadow_pgtable;
522
523 /* set at EPT violation at this point */
524 unsigned long exit_qualification;
525
526 /* pv related host specific info */
527 struct {
528 bool pv_unhalted;
529 } pv;
530 };
531
532 struct kvm_lpage_info {
533 int write_count;
534 };
535
536 struct kvm_arch_memory_slot {
537 unsigned long *rmap[KVM_NR_PAGE_SIZES];
538 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
539 };
540
541 struct kvm_apic_map {
542 struct rcu_head rcu;
543 u8 ldr_bits;
544 /* fields bellow are used to decode ldr values in different modes */
545 u32 cid_shift, cid_mask, lid_mask;
546 struct kvm_lapic *phys_map[256];
547 /* first index is cluster id second is cpu id in a cluster */
548 struct kvm_lapic *logical_map[16][16];
549 };
550
551 struct kvm_arch {
552 unsigned int n_used_mmu_pages;
553 unsigned int n_requested_mmu_pages;
554 unsigned int n_max_mmu_pages;
555 unsigned int indirect_shadow_pages;
556 unsigned long mmu_valid_gen;
557 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
558 /*
559 * Hash table of struct kvm_mmu_page.
560 */
561 struct list_head active_mmu_pages;
562 struct list_head zapped_obsolete_pages;
563
564 struct list_head assigned_dev_head;
565 struct iommu_domain *iommu_domain;
566 bool iommu_noncoherent;
567 #define __KVM_HAVE_ARCH_NONCOHERENT_DMA
568 atomic_t noncoherent_dma_count;
569 struct kvm_pic *vpic;
570 struct kvm_ioapic *vioapic;
571 struct kvm_pit *vpit;
572 int vapics_in_nmi_mode;
573 struct mutex apic_map_lock;
574 struct kvm_apic_map *apic_map;
575
576 unsigned int tss_addr;
577 struct page *apic_access_page;
578
579 gpa_t wall_clock;
580
581 struct page *ept_identity_pagetable;
582 bool ept_identity_pagetable_done;
583 gpa_t ept_identity_map_addr;
584
585 unsigned long irq_sources_bitmap;
586 s64 kvmclock_offset;
587 raw_spinlock_t tsc_write_lock;
588 u64 last_tsc_nsec;
589 u64 last_tsc_write;
590 u32 last_tsc_khz;
591 u64 cur_tsc_nsec;
592 u64 cur_tsc_write;
593 u64 cur_tsc_offset;
594 u8 cur_tsc_generation;
595 int nr_vcpus_matched_tsc;
596
597 spinlock_t pvclock_gtod_sync_lock;
598 bool use_master_clock;
599 u64 master_kernel_ns;
600 cycle_t master_cycle_now;
601 struct delayed_work kvmclock_update_work;
602 struct delayed_work kvmclock_sync_work;
603
604 struct kvm_xen_hvm_config xen_hvm_config;
605
606 /* fields used by HYPER-V emulation */
607 u64 hv_guest_os_id;
608 u64 hv_hypercall;
609 u64 hv_tsc_page;
610
611 #ifdef CONFIG_KVM_MMU_AUDIT
612 int audit_point;
613 #endif
614 };
615
616 struct kvm_vm_stat {
617 u32 mmu_shadow_zapped;
618 u32 mmu_pte_write;
619 u32 mmu_pte_updated;
620 u32 mmu_pde_zapped;
621 u32 mmu_flooded;
622 u32 mmu_recycled;
623 u32 mmu_cache_miss;
624 u32 mmu_unsync;
625 u32 remote_tlb_flush;
626 u32 lpages;
627 };
628
629 struct kvm_vcpu_stat {
630 u32 pf_fixed;
631 u32 pf_guest;
632 u32 tlb_flush;
633 u32 invlpg;
634
635 u32 exits;
636 u32 io_exits;
637 u32 mmio_exits;
638 u32 signal_exits;
639 u32 irq_window_exits;
640 u32 nmi_window_exits;
641 u32 halt_exits;
642 u32 halt_wakeup;
643 u32 request_irq_exits;
644 u32 irq_exits;
645 u32 host_state_reload;
646 u32 efer_reload;
647 u32 fpu_reload;
648 u32 insn_emulation;
649 u32 insn_emulation_fail;
650 u32 hypercalls;
651 u32 irq_injections;
652 u32 nmi_injections;
653 };
654
655 struct x86_instruction_info;
656
657 struct msr_data {
658 bool host_initiated;
659 u32 index;
660 u64 data;
661 };
662
663 struct kvm_x86_ops {
664 int (*cpu_has_kvm_support)(void); /* __init */
665 int (*disabled_by_bios)(void); /* __init */
666 int (*hardware_enable)(void *dummy);
667 void (*hardware_disable)(void *dummy);
668 void (*check_processor_compatibility)(void *rtn);
669 int (*hardware_setup)(void); /* __init */
670 void (*hardware_unsetup)(void); /* __exit */
671 bool (*cpu_has_accelerated_tpr)(void);
672 void (*cpuid_update)(struct kvm_vcpu *vcpu);
673
674 /* Create, but do not attach this VCPU */
675 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
676 void (*vcpu_free)(struct kvm_vcpu *vcpu);
677 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
678
679 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
680 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
681 void (*vcpu_put)(struct kvm_vcpu *vcpu);
682
683 void (*update_db_bp_intercept)(struct kvm_vcpu *vcpu);
684 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
685 int (*set_msr)(struct kvm_vcpu *vcpu, struct msr_data *msr);
686 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
687 void (*get_segment)(struct kvm_vcpu *vcpu,
688 struct kvm_segment *var, int seg);
689 int (*get_cpl)(struct kvm_vcpu *vcpu);
690 void (*set_segment)(struct kvm_vcpu *vcpu,
691 struct kvm_segment *var, int seg);
692 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
693 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
694 void (*decache_cr3)(struct kvm_vcpu *vcpu);
695 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
696 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
697 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
698 int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
699 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
700 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
701 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
702 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
703 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
704 u64 (*get_dr6)(struct kvm_vcpu *vcpu);
705 void (*set_dr6)(struct kvm_vcpu *vcpu, unsigned long value);
706 void (*sync_dirty_debug_regs)(struct kvm_vcpu *vcpu);
707 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
708 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
709 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
710 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
711 void (*fpu_activate)(struct kvm_vcpu *vcpu);
712 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
713
714 void (*tlb_flush)(struct kvm_vcpu *vcpu);
715
716 void (*run)(struct kvm_vcpu *vcpu);
717 int (*handle_exit)(struct kvm_vcpu *vcpu);
718 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
719 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
720 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
721 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
722 unsigned char *hypercall_addr);
723 void (*set_irq)(struct kvm_vcpu *vcpu);
724 void (*set_nmi)(struct kvm_vcpu *vcpu);
725 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
726 bool has_error_code, u32 error_code,
727 bool reinject);
728 void (*cancel_injection)(struct kvm_vcpu *vcpu);
729 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
730 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
731 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
732 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
733 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
734 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
735 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
736 int (*vm_has_apicv)(struct kvm *kvm);
737 void (*hwapic_irr_update)(struct kvm_vcpu *vcpu, int max_irr);
738 void (*hwapic_isr_update)(struct kvm *kvm, int isr);
739 void (*load_eoi_exitmap)(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap);
740 void (*set_virtual_x2apic_mode)(struct kvm_vcpu *vcpu, bool set);
741 void (*deliver_posted_interrupt)(struct kvm_vcpu *vcpu, int vector);
742 void (*sync_pir_to_irr)(struct kvm_vcpu *vcpu);
743 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
744 int (*get_tdp_level)(void);
745 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
746 int (*get_lpage_level)(void);
747 bool (*rdtscp_supported)(void);
748 bool (*invpcid_supported)(void);
749 void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment, bool host);
750
751 void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
752
753 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
754
755 bool (*has_wbinvd_exit)(void);
756
757 void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz, bool scale);
758 u64 (*read_tsc_offset)(struct kvm_vcpu *vcpu);
759 void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
760
761 u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
762 u64 (*read_l1_tsc)(struct kvm_vcpu *vcpu, u64 host_tsc);
763
764 void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
765
766 int (*check_intercept)(struct kvm_vcpu *vcpu,
767 struct x86_instruction_info *info,
768 enum x86_intercept_stage stage);
769 void (*handle_external_intr)(struct kvm_vcpu *vcpu);
770 bool (*mpx_supported)(void);
771
772 int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
773 };
774
775 struct kvm_arch_async_pf {
776 u32 token;
777 gfn_t gfn;
778 unsigned long cr3;
779 bool direct_map;
780 };
781
782 extern struct kvm_x86_ops *kvm_x86_ops;
783
784 static inline void adjust_tsc_offset_guest(struct kvm_vcpu *vcpu,
785 s64 adjustment)
786 {
787 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, false);
788 }
789
790 static inline void adjust_tsc_offset_host(struct kvm_vcpu *vcpu, s64 adjustment)
791 {
792 kvm_x86_ops->adjust_tsc_offset(vcpu, adjustment, true);
793 }
794
795 int kvm_mmu_module_init(void);
796 void kvm_mmu_module_exit(void);
797
798 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
799 int kvm_mmu_create(struct kvm_vcpu *vcpu);
800 void kvm_mmu_setup(struct kvm_vcpu *vcpu);
801 void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
802 u64 dirty_mask, u64 nx_mask, u64 x_mask);
803
804 void kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
805 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
806 void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
807 struct kvm_memory_slot *slot,
808 gfn_t gfn_offset, unsigned long mask);
809 void kvm_mmu_zap_all(struct kvm *kvm);
810 void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm);
811 unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
812 void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
813
814 int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
815
816 int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
817 const void *val, int bytes);
818 u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
819
820 extern bool tdp_enabled;
821
822 u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
823
824 /* control of guest tsc rate supported? */
825 extern bool kvm_has_tsc_control;
826 /* minimum supported tsc_khz for guests */
827 extern u32 kvm_min_guest_tsc_khz;
828 /* maximum supported tsc_khz for guests */
829 extern u32 kvm_max_guest_tsc_khz;
830
831 enum emulation_result {
832 EMULATE_DONE, /* no further processing */
833 EMULATE_USER_EXIT, /* kvm_run ready for userspace exit */
834 EMULATE_FAIL, /* can't emulate this instruction */
835 };
836
837 #define EMULTYPE_NO_DECODE (1 << 0)
838 #define EMULTYPE_TRAP_UD (1 << 1)
839 #define EMULTYPE_SKIP (1 << 2)
840 #define EMULTYPE_RETRY (1 << 3)
841 #define EMULTYPE_NO_REEXECUTE (1 << 4)
842 int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
843 int emulation_type, void *insn, int insn_len);
844
845 static inline int emulate_instruction(struct kvm_vcpu *vcpu,
846 int emulation_type)
847 {
848 return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
849 }
850
851 void kvm_enable_efer_bits(u64);
852 bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
853 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
854 int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr);
855
856 struct x86_emulate_ctxt;
857
858 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
859 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
860 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
861 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
862
863 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
864 int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
865 void kvm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, unsigned int vector);
866
867 int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int idt_index,
868 int reason, bool has_error_code, u32 error_code);
869
870 int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
871 int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
872 int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
873 int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
874 int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
875 int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
876 unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
877 void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
878 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
879 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
880
881 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
882 int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr);
883
884 unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
885 void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
886 bool kvm_rdpmc(struct kvm_vcpu *vcpu);
887
888 void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
889 void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
890 void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
891 void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
892 void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
893 int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
894 gfn_t gfn, void *data, int offset, int len,
895 u32 access);
896 void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
897 bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
898
899 static inline int __kvm_irq_line_state(unsigned long *irq_state,
900 int irq_source_id, int level)
901 {
902 /* Logical OR for level trig interrupt */
903 if (level)
904 __set_bit(irq_source_id, irq_state);
905 else
906 __clear_bit(irq_source_id, irq_state);
907
908 return !!(*irq_state);
909 }
910
911 int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
912 void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
913
914 void kvm_inject_nmi(struct kvm_vcpu *vcpu);
915
916 int fx_init(struct kvm_vcpu *vcpu);
917
918 void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
919 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
920 const u8 *new, int bytes);
921 int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
922 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
923 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
924 int kvm_mmu_load(struct kvm_vcpu *vcpu);
925 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
926 void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
927 gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
928 gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
929 struct x86_exception *exception);
930 gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
931 struct x86_exception *exception);
932 gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
933 struct x86_exception *exception);
934 gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
935 struct x86_exception *exception);
936
937 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
938
939 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
940 void *insn, int insn_len);
941 void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
942 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu);
943
944 void kvm_enable_tdp(void);
945 void kvm_disable_tdp(void);
946
947 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
948 {
949 return gpa;
950 }
951
952 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
953 {
954 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
955
956 return (struct kvm_mmu_page *)page_private(page);
957 }
958
959 static inline u16 kvm_read_ldt(void)
960 {
961 u16 ldt;
962 asm("sldt %0" : "=g"(ldt));
963 return ldt;
964 }
965
966 static inline void kvm_load_ldt(u16 sel)
967 {
968 asm("lldt %0" : : "rm"(sel));
969 }
970
971 #ifdef CONFIG_X86_64
972 static inline unsigned long read_msr(unsigned long msr)
973 {
974 u64 value;
975
976 rdmsrl(msr, value);
977 return value;
978 }
979 #endif
980
981 static inline u32 get_rdx_init_val(void)
982 {
983 return 0x600; /* P6 family */
984 }
985
986 static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
987 {
988 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
989 }
990
991 #define TSS_IOPB_BASE_OFFSET 0x66
992 #define TSS_BASE_SIZE 0x68
993 #define TSS_IOPB_SIZE (65536 / 8)
994 #define TSS_REDIRECTION_SIZE (256 / 8)
995 #define RMODE_TSS_SIZE \
996 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
997
998 enum {
999 TASK_SWITCH_CALL = 0,
1000 TASK_SWITCH_IRET = 1,
1001 TASK_SWITCH_JMP = 2,
1002 TASK_SWITCH_GATE = 3,
1003 };
1004
1005 #define HF_GIF_MASK (1 << 0)
1006 #define HF_HIF_MASK (1 << 1)
1007 #define HF_VINTR_MASK (1 << 2)
1008 #define HF_NMI_MASK (1 << 3)
1009 #define HF_IRET_MASK (1 << 4)
1010 #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
1011
1012 /*
1013 * Hardware virtualization extension instructions may fault if a
1014 * reboot turns off virtualization while processes are running.
1015 * Trap the fault and ignore the instruction if that happens.
1016 */
1017 asmlinkage void kvm_spurious_fault(void);
1018
1019 #define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
1020 "666: " insn "\n\t" \
1021 "668: \n\t" \
1022 ".pushsection .fixup, \"ax\" \n" \
1023 "667: \n\t" \
1024 cleanup_insn "\n\t" \
1025 "cmpb $0, kvm_rebooting \n\t" \
1026 "jne 668b \n\t" \
1027 __ASM_SIZE(push) " $666b \n\t" \
1028 "call kvm_spurious_fault \n\t" \
1029 ".popsection \n\t" \
1030 _ASM_EXTABLE(666b, 667b)
1031
1032 #define __kvm_handle_fault_on_reboot(insn) \
1033 ____kvm_handle_fault_on_reboot(insn, "")
1034
1035 #define KVM_ARCH_WANT_MMU_NOTIFIER
1036 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
1037 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
1038 int kvm_age_hva(struct kvm *kvm, unsigned long hva);
1039 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
1040 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
1041 int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
1042 int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v);
1043 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
1044 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
1045 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
1046 void kvm_vcpu_reset(struct kvm_vcpu *vcpu);
1047
1048 void kvm_define_shared_msr(unsigned index, u32 msr);
1049 void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
1050
1051 bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
1052
1053 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1054 struct kvm_async_pf *work);
1055 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1056 struct kvm_async_pf *work);
1057 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1058 struct kvm_async_pf *work);
1059 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
1060 extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
1061
1062 void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
1063
1064 int kvm_is_in_guest(void);
1065
1066 void kvm_pmu_init(struct kvm_vcpu *vcpu);
1067 void kvm_pmu_destroy(struct kvm_vcpu *vcpu);
1068 void kvm_pmu_reset(struct kvm_vcpu *vcpu);
1069 void kvm_pmu_cpuid_update(struct kvm_vcpu *vcpu);
1070 bool kvm_pmu_msr(struct kvm_vcpu *vcpu, u32 msr);
1071 int kvm_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
1072 int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
1073 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data);
1074 void kvm_handle_pmu_event(struct kvm_vcpu *vcpu);
1075 void kvm_deliver_pmi(struct kvm_vcpu *vcpu);
1076
1077 #endif /* _ASM_X86_KVM_HOST_H */
Linux kernel - Deliverables
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