]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/blame_incremental - arch/x86/include/asm/kvm_host.h
projects / mirror_ubuntu-disco-kernel.git / blame_incremental
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (non-incremental) | history | HEAD
KVM: x86 emulator: during rep emulation decrement ECX only if emulation succeeded
[mirror_ubuntu-disco-kernel.git] / arch / x86 / include / asm / kvm_host.h
... / ...
CommitLineData
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
19#include <linux/kvm.h>
20#include <linux/kvm_para.h>
21#include <linux/kvm_types.h>
22
23#include <asm/pvclock-abi.h>
24#include <asm/desc.h>
25#include <asm/mtrr.h>
26#include <asm/msr-index.h>
27
28#define KVM_MAX_VCPUS 64
29#define KVM_MEMORY_SLOTS 32
30/* memory slots that does not exposed to userspace */
31#define KVM_PRIVATE_MEM_SLOTS 4
32
33#define KVM_PIO_PAGE_OFFSET 1
34#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
35
36#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
37#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
38#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
39 0xFFFFFF0000000000ULL)
40
41#define INVALID_PAGE (~(hpa_t)0)
42#define UNMAPPED_GVA (~(gpa_t)0)
43
44/* KVM Hugepage definitions for x86 */
45#define KVM_NR_PAGE_SIZES 3
46#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + (((x) - 1) * 9))
47#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
48#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
49#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
50
51#define DE_VECTOR 0
52#define DB_VECTOR 1
53#define BP_VECTOR 3
54#define OF_VECTOR 4
55#define BR_VECTOR 5
56#define UD_VECTOR 6
57#define NM_VECTOR 7
58#define DF_VECTOR 8
59#define TS_VECTOR 10
60#define NP_VECTOR 11
61#define SS_VECTOR 12
62#define GP_VECTOR 13
63#define PF_VECTOR 14
64#define MF_VECTOR 16
65#define MC_VECTOR 18
66
67#define SELECTOR_TI_MASK (1 << 2)
68#define SELECTOR_RPL_MASK 0x03
69
70#define IOPL_SHIFT 12
71
72#define KVM_ALIAS_SLOTS 4
73
74#define KVM_PERMILLE_MMU_PAGES 20
75#define KVM_MIN_ALLOC_MMU_PAGES 64
76#define KVM_MMU_HASH_SHIFT 10
77#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
78#define KVM_MIN_FREE_MMU_PAGES 5
79#define KVM_REFILL_PAGES 25
80#define KVM_MAX_CPUID_ENTRIES 40
81#define KVM_NR_FIXED_MTRR_REGION 88
82#define KVM_NR_VAR_MTRR 8
83
84extern spinlock_t kvm_lock;
85extern struct list_head vm_list;
86
87struct kvm_vcpu;
88struct kvm;
89
90enum kvm_reg {
91 VCPU_REGS_RAX = 0,
92 VCPU_REGS_RCX = 1,
93 VCPU_REGS_RDX = 2,
94 VCPU_REGS_RBX = 3,
95 VCPU_REGS_RSP = 4,
96 VCPU_REGS_RBP = 5,
97 VCPU_REGS_RSI = 6,
98 VCPU_REGS_RDI = 7,
99#ifdef CONFIG_X86_64
100 VCPU_REGS_R8 = 8,
101 VCPU_REGS_R9 = 9,
102 VCPU_REGS_R10 = 10,
103 VCPU_REGS_R11 = 11,
104 VCPU_REGS_R12 = 12,
105 VCPU_REGS_R13 = 13,
106 VCPU_REGS_R14 = 14,
107 VCPU_REGS_R15 = 15,
108#endif
109 VCPU_REGS_RIP,
110 NR_VCPU_REGS
111};
112
113enum kvm_reg_ex {
114 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
115};
116
117enum {
118 VCPU_SREG_ES,
119 VCPU_SREG_CS,
120 VCPU_SREG_SS,
121 VCPU_SREG_DS,
122 VCPU_SREG_FS,
123 VCPU_SREG_GS,
124 VCPU_SREG_TR,
125 VCPU_SREG_LDTR,
126};
127
128#include <asm/kvm_emulate.h>
129
130#define KVM_NR_MEM_OBJS 40
131
132#define KVM_NR_DB_REGS 4
133
134#define DR6_BD (1 << 13)
135#define DR6_BS (1 << 14)
136#define DR6_FIXED_1 0xffff0ff0
137#define DR6_VOLATILE 0x0000e00f
138
139#define DR7_BP_EN_MASK 0x000000ff
140#define DR7_GE (1 << 9)
141#define DR7_GD (1 << 13)
142#define DR7_FIXED_1 0x00000400
143#define DR7_VOLATILE 0xffff23ff
144
145/*
146 * We don't want allocation failures within the mmu code, so we preallocate
147 * enough memory for a single page fault in a cache.
148 */
149struct kvm_mmu_memory_cache {
150 int nobjs;
151 void *objects[KVM_NR_MEM_OBJS];
152};
153
154#define NR_PTE_CHAIN_ENTRIES 5
155
156struct kvm_pte_chain {
157 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
158 struct hlist_node link;
159};
160
161/*
162 * kvm_mmu_page_role, below, is defined as:
163 *
164 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
165 * bits 4:7 - page table level for this shadow (1-4)
166 * bits 8:9 - page table quadrant for 2-level guests
167 * bit 16 - direct mapping of virtual to physical mapping at gfn
168 * used for real mode and two-dimensional paging
169 * bits 17:19 - common access permissions for all ptes in this shadow page
170 */
171union kvm_mmu_page_role {
172 unsigned word;
173 struct {
174 unsigned glevels:4;
175 unsigned level:4;
176 unsigned quadrant:2;
177 unsigned pad_for_nice_hex_output:6;
178 unsigned direct:1;
179 unsigned access:3;
180 unsigned invalid:1;
181 unsigned cr4_pge:1;
182 unsigned nxe:1;
183 };
184};
185
186struct kvm_mmu_page {
187 struct list_head link;
188 struct hlist_node hash_link;
189
190 struct list_head oos_link;
191
192 /*
193 * The following two entries are used to key the shadow page in the
194 * hash table.
195 */
196 gfn_t gfn;
197 union kvm_mmu_page_role role;
198
199 u64 *spt;
200 /* hold the gfn of each spte inside spt */
201 gfn_t *gfns;
202 /*
203 * One bit set per slot which has memory
204 * in this shadow page.
205 */
206 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
207 int multimapped; /* More than one parent_pte? */
208 int root_count; /* Currently serving as active root */
209 bool unsync;
210 unsigned int unsync_children;
211 union {
212 u64 *parent_pte; /* !multimapped */
213 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
214 };
215 DECLARE_BITMAP(unsync_child_bitmap, 512);
216};
217
218struct kvm_pv_mmu_op_buffer {
219 void *ptr;
220 unsigned len;
221 unsigned processed;
222 char buf[512] __aligned(sizeof(long));
223};
224
225struct kvm_pio_request {
226 unsigned long count;
227 int cur_count;
228 gva_t guest_gva;
229 int in;
230 int port;
231 int size;
232 int string;
233 int down;
234 int rep;
235};
236
237/*
238 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
239 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
240 * mode.
241 */
242struct kvm_mmu {
243 void (*new_cr3)(struct kvm_vcpu *vcpu);
244 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
245 void (*free)(struct kvm_vcpu *vcpu);
246 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
247 u32 *error);
248 void (*prefetch_page)(struct kvm_vcpu *vcpu,
249 struct kvm_mmu_page *page);
250 int (*sync_page)(struct kvm_vcpu *vcpu,
251 struct kvm_mmu_page *sp);
252 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
253 hpa_t root_hpa;
254 int root_level;
255 int shadow_root_level;
256 union kvm_mmu_page_role base_role;
257
258 u64 *pae_root;
259 u64 rsvd_bits_mask[2][4];
260};
261
262struct kvm_vcpu_arch {
263 u64 host_tsc;
264 /*
265 * rip and regs accesses must go through
266 * kvm_{register,rip}_{read,write} functions.
267 */
268 unsigned long regs[NR_VCPU_REGS];
269 u32 regs_avail;
270 u32 regs_dirty;
271
272 unsigned long cr0;
273 unsigned long cr0_guest_owned_bits;
274 unsigned long cr2;
275 unsigned long cr3;
276 unsigned long cr4;
277 unsigned long cr4_guest_owned_bits;
278 unsigned long cr8;
279 u32 hflags;
280 u64 pdptrs[4]; /* pae */
281 u64 efer;
282 u64 apic_base;
283 struct kvm_lapic *apic; /* kernel irqchip context */
284 int32_t apic_arb_prio;
285 int mp_state;
286 int sipi_vector;
287 u64 ia32_misc_enable_msr;
288 bool tpr_access_reporting;
289
290 struct kvm_mmu mmu;
291 /* only needed in kvm_pv_mmu_op() path, but it's hot so
292 * put it here to avoid allocation */
293 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
294
295 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
296 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
297 struct kvm_mmu_memory_cache mmu_page_cache;
298 struct kvm_mmu_memory_cache mmu_page_header_cache;
299
300 gfn_t last_pt_write_gfn;
301 int last_pt_write_count;
302 u64 *last_pte_updated;
303 gfn_t last_pte_gfn;
304
305 struct {
306 gfn_t gfn; /* presumed gfn during guest pte update */
307 pfn_t pfn; /* pfn corresponding to that gfn */
308 unsigned long mmu_seq;
309 } update_pte;
310
311 struct i387_fxsave_struct host_fx_image;
312 struct i387_fxsave_struct guest_fx_image;
313
314 gva_t mmio_fault_cr2;
315 struct kvm_pio_request pio;
316 void *pio_data;
317
318 u8 event_exit_inst_len;
319
320 struct kvm_queued_exception {
321 bool pending;
322 bool has_error_code;
323 u8 nr;
324 u32 error_code;
325 } exception;
326
327 struct kvm_queued_interrupt {
328 bool pending;
329 bool soft;
330 u8 nr;
331 } interrupt;
332
333 int halt_request; /* real mode on Intel only */
334
335 int cpuid_nent;
336 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
337 /* emulate context */
338
339 struct x86_emulate_ctxt emulate_ctxt;
340
341 gpa_t time;
342 struct pvclock_vcpu_time_info hv_clock;
343 unsigned int hv_clock_tsc_khz;
344 unsigned int time_offset;
345 struct page *time_page;
346
347 bool nmi_pending;
348 bool nmi_injected;
349
350 struct mtrr_state_type mtrr_state;
351 u32 pat;
352
353 int switch_db_regs;
354 unsigned long db[KVM_NR_DB_REGS];
355 unsigned long dr6;
356 unsigned long dr7;
357 unsigned long eff_db[KVM_NR_DB_REGS];
358
359 u64 mcg_cap;
360 u64 mcg_status;
361 u64 mcg_ctl;
362 u64 *mce_banks;
363
364 /* used for guest single stepping over the given code position */
365 unsigned long singlestep_rip;
366
367 /* fields used by HYPER-V emulation */
368 u64 hv_vapic;
369};
370
371struct kvm_mem_alias {
372 gfn_t base_gfn;
373 unsigned long npages;
374 gfn_t target_gfn;
375#define KVM_ALIAS_INVALID 1UL
376 unsigned long flags;
377};
378
379#define KVM_ARCH_HAS_UNALIAS_INSTANTIATION
380
381struct kvm_mem_aliases {
382 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
383 int naliases;
384};
385
386struct kvm_arch {
387 struct kvm_mem_aliases *aliases;
388
389 unsigned int n_free_mmu_pages;
390 unsigned int n_requested_mmu_pages;
391 unsigned int n_alloc_mmu_pages;
392 atomic_t invlpg_counter;
393 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
394 /*
395 * Hash table of struct kvm_mmu_page.
396 */
397 struct list_head active_mmu_pages;
398 struct list_head assigned_dev_head;
399 struct iommu_domain *iommu_domain;
400 int iommu_flags;
401 struct kvm_pic *vpic;
402 struct kvm_ioapic *vioapic;
403 struct kvm_pit *vpit;
404 int vapics_in_nmi_mode;
405
406 unsigned int tss_addr;
407 struct page *apic_access_page;
408
409 gpa_t wall_clock;
410
411 struct page *ept_identity_pagetable;
412 bool ept_identity_pagetable_done;
413 gpa_t ept_identity_map_addr;
414
415 unsigned long irq_sources_bitmap;
416 u64 vm_init_tsc;
417 s64 kvmclock_offset;
418
419 struct kvm_xen_hvm_config xen_hvm_config;
420
421 /* fields used by HYPER-V emulation */
422 u64 hv_guest_os_id;
423 u64 hv_hypercall;
424};
425
426struct kvm_vm_stat {
427 u32 mmu_shadow_zapped;
428 u32 mmu_pte_write;
429 u32 mmu_pte_updated;
430 u32 mmu_pde_zapped;
431 u32 mmu_flooded;
432 u32 mmu_recycled;
433 u32 mmu_cache_miss;
434 u32 mmu_unsync;
435 u32 remote_tlb_flush;
436 u32 lpages;
437};
438
439struct kvm_vcpu_stat {
440 u32 pf_fixed;
441 u32 pf_guest;
442 u32 tlb_flush;
443 u32 invlpg;
444
445 u32 exits;
446 u32 io_exits;
447 u32 mmio_exits;
448 u32 signal_exits;
449 u32 irq_window_exits;
450 u32 nmi_window_exits;
451 u32 halt_exits;
452 u32 halt_wakeup;
453 u32 request_irq_exits;
454 u32 irq_exits;
455 u32 host_state_reload;
456 u32 efer_reload;
457 u32 fpu_reload;
458 u32 insn_emulation;
459 u32 insn_emulation_fail;
460 u32 hypercalls;
461 u32 irq_injections;
462 u32 nmi_injections;
463};
464
465struct kvm_x86_ops {
466 int (*cpu_has_kvm_support)(void); /* __init */
467 int (*disabled_by_bios)(void); /* __init */
468 int (*hardware_enable)(void *dummy);
469 void (*hardware_disable)(void *dummy);
470 void (*check_processor_compatibility)(void *rtn);
471 int (*hardware_setup)(void); /* __init */
472 void (*hardware_unsetup)(void); /* __exit */
473 bool (*cpu_has_accelerated_tpr)(void);
474 void (*cpuid_update)(struct kvm_vcpu *vcpu);
475
476 /* Create, but do not attach this VCPU */
477 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
478 void (*vcpu_free)(struct kvm_vcpu *vcpu);
479 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
480
481 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
482 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
483 void (*vcpu_put)(struct kvm_vcpu *vcpu);
484
485 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
486 struct kvm_guest_debug *dbg);
487 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
488 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
489 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
490 void (*get_segment)(struct kvm_vcpu *vcpu,
491 struct kvm_segment *var, int seg);
492 int (*get_cpl)(struct kvm_vcpu *vcpu);
493 void (*set_segment)(struct kvm_vcpu *vcpu,
494 struct kvm_segment *var, int seg);
495 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
496 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
497 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
498 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
499 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
500 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
501 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
502 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
503 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
504 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
505 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
506 int (*get_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long *dest);
507 int (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value);
508 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
509 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
510 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
511 void (*fpu_activate)(struct kvm_vcpu *vcpu);
512 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
513
514 void (*tlb_flush)(struct kvm_vcpu *vcpu);
515
516 void (*run)(struct kvm_vcpu *vcpu);
517 int (*handle_exit)(struct kvm_vcpu *vcpu);
518 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
519 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
520 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
521 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
522 unsigned char *hypercall_addr);
523 void (*set_irq)(struct kvm_vcpu *vcpu);
524 void (*set_nmi)(struct kvm_vcpu *vcpu);
525 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
526 bool has_error_code, u32 error_code);
527 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
528 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
529 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
530 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
531 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
532 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
533 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
534 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
535 int (*get_tdp_level)(void);
536 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
537 int (*get_lpage_level)(void);
538 bool (*rdtscp_supported)(void);
539
540 const struct trace_print_flags *exit_reasons_str;
541};
542
543extern struct kvm_x86_ops *kvm_x86_ops;
544
545int kvm_mmu_module_init(void);
546void kvm_mmu_module_exit(void);
547
548void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
549int kvm_mmu_create(struct kvm_vcpu *vcpu);
550int kvm_mmu_setup(struct kvm_vcpu *vcpu);
551void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
552void kvm_mmu_set_base_ptes(u64 base_pte);
553void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
554 u64 dirty_mask, u64 nx_mask, u64 x_mask);
555
556int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
557void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
558void kvm_mmu_zap_all(struct kvm *kvm);
559unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
560void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
561
562int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
563
564int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
565 const void *val, int bytes);
566int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
567 gpa_t addr, unsigned long *ret);
568u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
569
570extern bool tdp_enabled;
571
572enum emulation_result {
573 EMULATE_DONE, /* no further processing */
574 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
575 EMULATE_FAIL, /* can't emulate this instruction */
576};
577
578#define EMULTYPE_NO_DECODE (1 << 0)
579#define EMULTYPE_TRAP_UD (1 << 1)
580#define EMULTYPE_SKIP (1 << 2)
581int emulate_instruction(struct kvm_vcpu *vcpu,
582 unsigned long cr2, u16 error_code, int emulation_type);
583void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
584void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
585void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
586
587void kvm_enable_efer_bits(u64);
588int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
589int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
590
591struct x86_emulate_ctxt;
592
593int kvm_emulate_pio(struct kvm_vcpu *vcpu, int in,
594 int size, unsigned port);
595int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, int in,
596 int size, unsigned long count, int down,
597 gva_t address, int rep, unsigned port);
598void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
599int kvm_emulate_halt(struct kvm_vcpu *vcpu);
600int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
601int emulate_clts(struct kvm_vcpu *vcpu);
602int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
603 unsigned long *dest);
604int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
605 unsigned long value);
606
607void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
608int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
609
610int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason);
611
612void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
613void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
614void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
615void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
616unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
617void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
618void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
619
620int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
621int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
622
623unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
624void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
625
626void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
627void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
628void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
629 u32 error_code);
630bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
631
632int kvm_pic_set_irq(void *opaque, int irq, int level);
633
634void kvm_inject_nmi(struct kvm_vcpu *vcpu);
635
636void fx_init(struct kvm_vcpu *vcpu);
637
638int emulator_write_emulated(unsigned long addr,
639 const void *val,
640 unsigned int bytes,
641 struct kvm_vcpu *vcpu);
642
643void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
644void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
645 const u8 *new, int bytes,
646 bool guest_initiated);
647int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
648void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
649int kvm_mmu_load(struct kvm_vcpu *vcpu);
650void kvm_mmu_unload(struct kvm_vcpu *vcpu);
651void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
652gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
653gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
654gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
655gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
656
657int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
658
659int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
660
661int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
662void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
663
664void kvm_enable_tdp(void);
665void kvm_disable_tdp(void);
666
667int complete_pio(struct kvm_vcpu *vcpu);
668bool kvm_check_iopl(struct kvm_vcpu *vcpu);
669
670struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
671
672static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
673{
674 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
675
676 return (struct kvm_mmu_page *)page_private(page);
677}
678
679static inline u16 kvm_read_fs(void)
680{
681 u16 seg;
682 asm("mov %%fs, %0" : "=g"(seg));
683 return seg;
684}
685
686static inline u16 kvm_read_gs(void)
687{
688 u16 seg;
689 asm("mov %%gs, %0" : "=g"(seg));
690 return seg;
691}
692
693static inline u16 kvm_read_ldt(void)
694{
695 u16 ldt;
696 asm("sldt %0" : "=g"(ldt));
697 return ldt;
698}
699
700static inline void kvm_load_fs(u16 sel)
701{
702 asm("mov %0, %%fs" : : "rm"(sel));
703}
704
705static inline void kvm_load_gs(u16 sel)
706{
707 asm("mov %0, %%gs" : : "rm"(sel));
708}
709
710static inline void kvm_load_ldt(u16 sel)
711{
712 asm("lldt %0" : : "rm"(sel));
713}
714
715#ifdef CONFIG_X86_64
716static inline unsigned long read_msr(unsigned long msr)
717{
718 u64 value;
719
720 rdmsrl(msr, value);
721 return value;
722}
723#endif
724
725static inline void kvm_fx_save(struct i387_fxsave_struct *image)
726{
727 asm("fxsave (%0)":: "r" (image));
728}
729
730static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
731{
732 asm("fxrstor (%0)":: "r" (image));
733}
734
735static inline void kvm_fx_finit(void)
736{
737 asm("finit");
738}
739
740static inline u32 get_rdx_init_val(void)
741{
742 return 0x600; /* P6 family */
743}
744
745static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
746{
747 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
748}
749
750#define TSS_IOPB_BASE_OFFSET 0x66
751#define TSS_BASE_SIZE 0x68
752#define TSS_IOPB_SIZE (65536 / 8)
753#define TSS_REDIRECTION_SIZE (256 / 8)
754#define RMODE_TSS_SIZE \
755 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
756
757enum {
758 TASK_SWITCH_CALL = 0,
759 TASK_SWITCH_IRET = 1,
760 TASK_SWITCH_JMP = 2,
761 TASK_SWITCH_GATE = 3,
762};
763
764#define HF_GIF_MASK (1 << 0)
765#define HF_HIF_MASK (1 << 1)
766#define HF_VINTR_MASK (1 << 2)
767#define HF_NMI_MASK (1 << 3)
768#define HF_IRET_MASK (1 << 4)
769
770/*
771 * Hardware virtualization extension instructions may fault if a
772 * reboot turns off virtualization while processes are running.
773 * Trap the fault and ignore the instruction if that happens.
774 */
775asmlinkage void kvm_handle_fault_on_reboot(void);
776
777#define __kvm_handle_fault_on_reboot(insn) \
778 "666: " insn "\n\t" \
779 ".pushsection .fixup, \"ax\" \n" \
780 "667: \n\t" \
781 __ASM_SIZE(push) " $666b \n\t" \
782 "jmp kvm_handle_fault_on_reboot \n\t" \
783 ".popsection \n\t" \
784 ".pushsection __ex_table, \"a\" \n\t" \
785 _ASM_PTR " 666b, 667b \n\t" \
786 ".popsection"
787
788#define KVM_ARCH_WANT_MMU_NOTIFIER
789int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
790int kvm_age_hva(struct kvm *kvm, unsigned long hva);
791void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
792int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
793int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
794int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
795int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
796
797void kvm_define_shared_msr(unsigned index, u32 msr);
798void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
799
800bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
801
802#endif /* _ASM_X86_KVM_HOST_H */
Ubuntu Disco kernel mirror for Proxmox VE and PMG