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sched: guest CPU accounting: maintain stats in account_system_time()
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / kvm / kvm.h
CommitLineData
6aa8b732
AK		 1#ifndef __KVM_H
2#define __KVM_H
3
4/*
5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
7 */
8
9#include <linux/types.h>
10#include <linux/list.h>
11#include <linux/mutex.h>
12#include <linux/spinlock.h>
06ff0d37
MR		 13#include <linux/signal.h>
14#include <linux/sched.h>
6aa8b732 15#include <linux/mm.h>
15ad7146 16#include <linux/preempt.h>
e8edc6e0 17#include <asm/signal.h>
6aa8b732 18
6aa8b732 19#include <linux/kvm.h>
102d8325 20#include <linux/kvm_para.h>
6aa8b732 21
f802a307
RR		 22#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
23#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
24#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
6aa8b732 25
6aa8b732 26#define KVM_GUEST_CR0_MASK \
707d92fa
RR		 27 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
28 | X86_CR0_NW | X86_CR0_CD)
6aa8b732 29#define KVM_VM_CR0_ALWAYS_ON \
707d92fa
RR		 30 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
31 | X86_CR0_MP)
6aa8b732 32#define KVM_GUEST_CR4_MASK \
66aee91a
RR		 33 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
34#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
35#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
6aa8b732
AK		 36
37#define INVALID_PAGE (~(hpa_t)0)
38#define UNMAPPED_GVA (~(gpa_t)0)
39
ef9254df 40#define KVM_MAX_VCPUS 4
e8207547 41#define KVM_ALIAS_SLOTS 4
2e2c618d 42#define KVM_MEMORY_SLOTS 8
7494c0cc 43#define KVM_NUM_MMU_PAGES 1024
ebeace86
AK		 44#define KVM_MIN_FREE_MMU_PAGES 5
45#define KVM_REFILL_PAGES 25
06465c5a 46#define KVM_MAX_CPUID_ENTRIES 40
6aa8b732 47
6aa8b732 48#define DE_VECTOR 0
7807fa6c 49#define NM_VECTOR 7
6aa8b732
AK		 50#define DF_VECTOR 8
51#define TS_VECTOR 10
52#define NP_VECTOR 11
53#define SS_VECTOR 12
54#define GP_VECTOR 13
55#define PF_VECTOR 14
56
57#define SELECTOR_TI_MASK (1 << 2)
58#define SELECTOR_RPL_MASK 0x03
59
60#define IOPL_SHIFT 12
61
039576c0
AK		 62#define KVM_PIO_PAGE_OFFSET 1
63
d9e368d6
AK		 64/*
65 * vcpu->requests bit members
66 */
67#define KVM_TLB_FLUSH 0
68
6aa8b732
AK		 69/*
70 * Address types:
71 *
72 * gva - guest virtual address
73 * gpa - guest physical address
74 * gfn - guest frame number
75 * hva - host virtual address
76 * hpa - host physical address
77 * hfn - host frame number
78 */
79
80typedef unsigned long gva_t;
81typedef u64 gpa_t;
82typedef unsigned long gfn_t;
83
84typedef unsigned long hva_t;
85typedef u64 hpa_t;
86typedef unsigned long hfn_t;
87
cea0f0e7
AK		 88#define NR_PTE_CHAIN_ENTRIES 5
89
90struct kvm_pte_chain {
91 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
92 struct hlist_node link;
93};
94
95/*
96 * kvm_mmu_page_role, below, is defined as:
97 *
98 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
99 * bits 4:7 - page table level for this shadow (1-4)
100 * bits 8:9 - page table quadrant for 2-level guests
101 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
d55e2cb2 102 * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
cea0f0e7
AK		 103 */
104union kvm_mmu_page_role {
105 unsigned word;
106 struct {
107 unsigned glevels : 4;
108 unsigned level : 4;
109 unsigned quadrant : 2;
110 unsigned pad_for_nice_hex_output : 6;
111 unsigned metaphysical : 1;
d55e2cb2 112 unsigned hugepage_access : 3;
cea0f0e7
AK		 113 };
114};
115
6aa8b732
AK		 116struct kvm_mmu_page {
117 struct list_head link;
cea0f0e7
AK		 118 struct hlist_node hash_link;
119
120 /*
121 * The following two entries are used to key the shadow page in the
122 * hash table.
123 */
124 gfn_t gfn;
125 union kvm_mmu_page_role role;
126
47ad8e68 127 u64 *spt;
6aa8b732
AK		 128 unsigned long slot_bitmap; /* One bit set per slot which has memory
129 * in this shadow page.
130 */
cea0f0e7 131 int multimapped; /* More than one parent_pte? */
3bb65a22 132 int root_count; /* Currently serving as active root */
cea0f0e7
AK		 133 union {
134 u64 *parent_pte; /* !multimapped */
135 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
136 };
6aa8b732
AK		 137};
138
6aa8b732 139struct kvm_vcpu;
c16f862d 140extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732
AK		 141
142/*
143 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
144 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
145 * mode.
146 */
147struct kvm_mmu {
148 void (*new_cr3)(struct kvm_vcpu *vcpu);
149 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
6aa8b732
AK		 150 void (*free)(struct kvm_vcpu *vcpu);
151 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
152 hpa_t root_hpa;
153 int root_level;
154 int shadow_root_level;
17ac10ad
AK		 155
156 u64 *pae_root;
6aa8b732
AK		 157};
158
714b93da
AK		 159#define KVM_NR_MEM_OBJS 20
160
161struct kvm_mmu_memory_cache {
162 int nobjs;
163 void *objects[KVM_NR_MEM_OBJS];
164};
165
166/*
167 * We don't want allocation failures within the mmu code, so we preallocate
168 * enough memory for a single page fault in a cache.
169 */
6aa8b732
AK		 170struct kvm_guest_debug {
171 int enabled;
172 unsigned long bp[4];
173 int singlestep;
174};
175
176enum {
177 VCPU_REGS_RAX = 0,
178 VCPU_REGS_RCX = 1,
179 VCPU_REGS_RDX = 2,
180 VCPU_REGS_RBX = 3,
181 VCPU_REGS_RSP = 4,
182 VCPU_REGS_RBP = 5,
183 VCPU_REGS_RSI = 6,
184 VCPU_REGS_RDI = 7,
05b3e0c2 185#ifdef CONFIG_X86_64
6aa8b732
AK		 186 VCPU_REGS_R8 = 8,
187 VCPU_REGS_R9 = 9,
188 VCPU_REGS_R10 = 10,
189 VCPU_REGS_R11 = 11,
190 VCPU_REGS_R12 = 12,
191 VCPU_REGS_R13 = 13,
192 VCPU_REGS_R14 = 14,
193 VCPU_REGS_R15 = 15,
194#endif
195 NR_VCPU_REGS
196};
197
198enum {
199 VCPU_SREG_CS,
200 VCPU_SREG_DS,
201 VCPU_SREG_ES,
202 VCPU_SREG_FS,
203 VCPU_SREG_GS,
204 VCPU_SREG_SS,
205 VCPU_SREG_TR,
206 VCPU_SREG_LDTR,
207};
208
039576c0
AK		 209struct kvm_pio_request {
210 unsigned long count;
211 int cur_count;
212 struct page *guest_pages[2];
213 unsigned guest_page_offset;
214 int in;
74906345 215 int port;
039576c0
AK		 216 int size;
217 int string;
218 int down;
219 int rep;
220};
221
1165f5fe
AK		 222struct kvm_stat {
223 u32 pf_fixed;
224 u32 pf_guest;
225 u32 tlb_flush;
226 u32 invlpg;
227
228 u32 exits;
229 u32 io_exits;
230 u32 mmio_exits;
231 u32 signal_exits;
232 u32 irq_window_exits;
233 u32 halt_exits;
b6958ce4 234 u32 halt_wakeup;
1165f5fe
AK		 235 u32 request_irq_exits;
236 u32 irq_exits;
e6adf283 237 u32 light_exits;
2cc51560 238 u32 efer_reload;
1165f5fe
AK		 239};
240
2eeb2e94
GH		 241struct kvm_io_device {
242 void (*read)(struct kvm_io_device *this,
243 gpa_t addr,
244 int len,
245 void *val);
246 void (*write)(struct kvm_io_device *this,
247 gpa_t addr,
248 int len,
249 const void *val);
250 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
251 void (*destructor)(struct kvm_io_device *this);
252
253 void *private;
254};
255
256static inline void kvm_iodevice_read(struct kvm_io_device *dev,
257 gpa_t addr,
258 int len,
259 void *val)
260{
261 dev->read(dev, addr, len, val);
262}
263
264static inline void kvm_iodevice_write(struct kvm_io_device *dev,
265 gpa_t addr,
266 int len,
267 const void *val)
268{
269 dev->write(dev, addr, len, val);
270}
271
272static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
273{
274 return dev->in_range(dev, addr);
275}
276
277static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
278{
74906345
ED		 279 if (dev->destructor)
280 dev->destructor(dev);
2eeb2e94
GH		 281}
282
283/*
284 * It would be nice to use something smarter than a linear search, TBD...
285 * Thankfully we dont expect many devices to register (famous last words :),
286 * so until then it will suffice. At least its abstracted so we can change
287 * in one place.
288 */
289struct kvm_io_bus {
290 int dev_count;
291#define NR_IOBUS_DEVS 6
292 struct kvm_io_device *devs[NR_IOBUS_DEVS];
293};
294
295void kvm_io_bus_init(struct kvm_io_bus *bus);
296void kvm_io_bus_destroy(struct kvm_io_bus *bus);
297struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
298void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
299 struct kvm_io_device *dev);
300
6aa8b732
AK		 301struct kvm_vcpu {
302 struct kvm *kvm;
15ad7146 303 struct preempt_notifier preempt_notifier;
dad3795d 304 int vcpu_id;
6aa8b732
AK		 305 struct mutex mutex;
306 int cpu;
0cc5064d 307 u64 host_tsc;
9a2bb7f4 308 struct kvm_run *run;
c1150d8c 309 int interrupt_window_open;
d9e368d6
AK		 310 int guest_mode;
311 unsigned long requests;
6aa8b732 312 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
9eb829ce 313 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
6aa8b732
AK		 314 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
315 unsigned long rip; /* needs vcpu_load_rsp_rip() */
316
317 unsigned long cr0;
318 unsigned long cr2;
319 unsigned long cr3;
102d8325
IM		 320 gpa_t para_state_gpa;
321 struct page *para_state_page;
322 gpa_t hypercall_gpa;
6aa8b732
AK		 323 unsigned long cr4;
324 unsigned long cr8;
1342d353 325 u64 pdptrs[4]; /* pae */
6aa8b732
AK		 326 u64 shadow_efer;
327 u64 apic_base;
97222cc8 328 struct kvm_lapic *apic; /* kernel irqchip context */
c5ec1534
HQ		 329#define VCPU_MP_STATE_RUNNABLE 0
330#define VCPU_MP_STATE_UNINITIALIZED 1
331#define VCPU_MP_STATE_INIT_RECEIVED 2
332#define VCPU_MP_STATE_SIPI_RECEIVED 3
333#define VCPU_MP_STATE_HALTED 4
334 int mp_state;
335 int sipi_vector;
6f00e68f 336 u64 ia32_misc_enable_msr;
6aa8b732 337
6aa8b732
AK		 338 struct kvm_mmu mmu;
339
714b93da
AK		 340 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
341 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
d3d25b04
AK		 342 struct kvm_mmu_memory_cache mmu_page_cache;
343 struct kvm_mmu_memory_cache mmu_page_header_cache;
714b93da 344
86a5ba02
AK		 345 gfn_t last_pt_write_gfn;
346 int last_pt_write_count;
347
6aa8b732
AK		 348 struct kvm_guest_debug guest_debug;
349
b114b080
RR		 350 struct i387_fxsave_struct host_fx_image;
351 struct i387_fxsave_struct guest_fx_image;
7807fa6c 352 int fpu_active;
7702fd1f 353 int guest_fpu_loaded;
6aa8b732
AK		 354
355 int mmio_needed;
356 int mmio_read_completed;
357 int mmio_is_write;
358 int mmio_size;
359 unsigned char mmio_data[8];
360 gpa_t mmio_phys_addr;
e7df56e4 361 gva_t mmio_fault_cr2;
039576c0
AK		 362 struct kvm_pio_request pio;
363 void *pio_data;
b6958ce4 364 wait_queue_head_t wq;
6aa8b732 365
1961d276
AK		 366 int sigset_active;
367 sigset_t sigset;
368
1165f5fe
AK		 369 struct kvm_stat stat;
370
6aa8b732
AK		 371 struct {
372 int active;
373 u8 save_iopl;
374 struct kvm_save_segment {
375 u16 selector;
376 unsigned long base;
377 u32 limit;
378 u32 ar;
379 } tr, es, ds, fs, gs;
380 } rmode;
72d6e5a0 381 int halt_request; /* real mode on Intel only */
06465c5a
AK		 382
383 int cpuid_nent;
384 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
6aa8b732
AK		 385};
386
e8207547
AK		 387struct kvm_mem_alias {
388 gfn_t base_gfn;
389 unsigned long npages;
390 gfn_t target_gfn;
391};
392
6aa8b732
AK		 393struct kvm_memory_slot {
394 gfn_t base_gfn;
395 unsigned long npages;
396 unsigned long flags;
397 struct page **phys_mem;
398 unsigned long *dirty_bitmap;
399};
400
401struct kvm {
11ec2804 402 struct mutex lock; /* protects everything except vcpus */
e8207547
AK		 403 int naliases;
404 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
6aa8b732
AK		 405 int nmemslots;
406 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
cea0f0e7
AK		 407 /*
408 * Hash table of struct kvm_mmu_page.
409 */
6aa8b732 410 struct list_head active_mmu_pages;
ebeace86 411 int n_free_mmu_pages;
cea0f0e7 412 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
fb3f0f51 413 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
cd4a4e53 414 unsigned long rmap_overflow;
133de902 415 struct list_head vm_list;
bccf2150 416 struct file *filp;
2eeb2e94 417 struct kvm_io_bus mmio_bus;
74906345 418 struct kvm_io_bus pio_bus;
85f455f7 419 struct kvm_pic *vpic;
1fd4f2a5 420 struct kvm_ioapic *vioapic;
932f72ad 421 int round_robin_prev_vcpu;
6aa8b732
AK		 422};
423
85f455f7
ED		 424static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
425{
426 return kvm->vpic;
427}
428
1fd4f2a5
ED		 429static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
430{
431 return kvm->vioapic;
432}
433
85f455f7
ED		 434static inline int irqchip_in_kernel(struct kvm *kvm)
435{
436 return pic_irqchip(kvm) != 0;
437}
438
6aa8b732
AK		 439struct descriptor_table {
440 u16 limit;
441 unsigned long base;
442} __attribute__((packed));
443
cbdd1bea 444struct kvm_x86_ops {
6aa8b732
AK		 445 int (*cpu_has_kvm_support)(void); /* __init */
446 int (*disabled_by_bios)(void); /* __init */
447 void (*hardware_enable)(void *dummy); /* __init */
448 void (*hardware_disable)(void *dummy);
002c7f7c 449 void (*check_processor_compatibility)(void *rtn);
6aa8b732
AK		 450 int (*hardware_setup)(void); /* __init */
451 void (*hardware_unsetup)(void); /* __exit */
452
fb3f0f51
RR		 453 /* Create, but do not attach this VCPU */
454 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
6aa8b732 455 void (*vcpu_free)(struct kvm_vcpu *vcpu);
04d2cc77 456 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
6aa8b732 457
04d2cc77 458 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
15ad7146 459 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
6aa8b732 460 void (*vcpu_put)(struct kvm_vcpu *vcpu);
774c47f1 461 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
6aa8b732
AK		 462
463 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
464 struct kvm_debug_guest *dbg);
04d2cc77 465 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
6aa8b732
AK		 466 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
467 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
468 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
469 void (*get_segment)(struct kvm_vcpu *vcpu,
470 struct kvm_segment *var, int seg);
471 void (*set_segment)(struct kvm_vcpu *vcpu,
472 struct kvm_segment *var, int seg);
6aa8b732 473 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
25c4c276 474 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
6aa8b732 475 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
6aa8b732
AK		 476 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
477 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
478 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
479 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
480 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
481 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
482 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
483 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
484 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
485 int *exception);
486 void (*cache_regs)(struct kvm_vcpu *vcpu);
487 void (*decache_regs)(struct kvm_vcpu *vcpu);
488 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
489 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
490
6aa8b732
AK		 491 void (*tlb_flush)(struct kvm_vcpu *vcpu);
492 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
493 unsigned long addr, u32 err_code);
494
495 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
496
04d2cc77
AK		 497 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
498 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
6aa8b732 499 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
102d8325
IM		 500 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
501 unsigned char *hypercall_addr);
2a8067f1
ED		 502 int (*get_irq)(struct kvm_vcpu *vcpu);
503 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
04d2cc77
AK		 504 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
505 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
506 struct kvm_run *run);
6aa8b732
AK		 507};
508
cbdd1bea 509extern struct kvm_x86_ops *kvm_x86_ops;
6aa8b732 510
f0242478
RR		 511/* The guest did something we don't support. */
512#define pr_unimpl(vcpu, fmt, ...) \
513 do { \
514 if (printk_ratelimit()) \
515 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
516 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
517 } while(0)
518
6aa8b732
AK		 519#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
520#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
521
fb3f0f51
RR		 522int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
523void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
524
cbdd1bea 525int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
c16f862d 526 struct module *module);
cbdd1bea 527void kvm_exit_x86(void);
6aa8b732 528
b5a33a75
AK		 529int kvm_mmu_module_init(void);
530void kvm_mmu_module_exit(void);
531
6aa8b732 532void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
8018c27b
IM		 533int kvm_mmu_create(struct kvm_vcpu *vcpu);
534int kvm_mmu_setup(struct kvm_vcpu *vcpu);
6aa8b732
AK		 535
536int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
90cb0529
AK		 537void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
538void kvm_mmu_zap_all(struct kvm *kvm);
6aa8b732
AK		 539
540hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
541#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
542#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
543static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
544hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
039576c0 545struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732 546
6aa8b732
AK		 547extern hpa_t bad_page_address;
548
954bbbc2 549struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
6aa8b732
AK		 550struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
551void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
552
553enum emulation_result {
554 EMULATE_DONE, /* no further processing */
555 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
556 EMULATE_FAIL, /* can't emulate this instruction */
557};
558
559int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
560 unsigned long cr2, u16 error_code);
054b1369 561void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
6aa8b732
AK		 562void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
563void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
564void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
565 unsigned long *rflags);
566
567unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
568void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
569 unsigned long *rflags);
35f3f286
AK		 570int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
571int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
6aa8b732
AK		 572
573struct x86_emulate_ctxt;
574
3090dd73
LV		 575int kvm_emulate_pio (struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
576 int size, unsigned port);
577int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
578 int size, unsigned long count, int down,
579 gva_t address, int rep, unsigned port);
06465c5a 580void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
d3bef15f 581int kvm_emulate_halt(struct kvm_vcpu *vcpu);
6aa8b732
AK		 582int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
583int emulate_clts(struct kvm_vcpu *vcpu);
584int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
585 unsigned long *dest);
586int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
587 unsigned long value);
588
589void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
590void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
591void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
592void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
7017fc3d 593unsigned long get_cr8(struct kvm_vcpu *vcpu);
6aa8b732 594void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
1747fb71 595void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
6aa8b732 596
3bab1f5d
AK		 597int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
598int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
6aa8b732
AK		 599
600void fx_init(struct kvm_vcpu *vcpu);
601
6aa8b732 602void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f
AK		 603void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
604void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 605void kvm_flush_remote_tlbs(struct kvm *kvm);
6aa8b732 606
e7d5d76c
LV		 607int emulator_read_std(unsigned long addr,
608 void *val,
609 unsigned int bytes,
610 struct kvm_vcpu *vcpu);
611int emulator_write_emulated(unsigned long addr,
612 const void *val,
613 unsigned int bytes,
614 struct kvm_vcpu *vcpu);
6aa8b732
AK		 615
616unsigned long segment_base(u16 selector);
617
09072daf 618void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
fe551881 619 const u8 *new, int bytes);
a436036b 620int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
22d95b12 621void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
17c3ba9d
AK		 622int kvm_mmu_load(struct kvm_vcpu *vcpu);
623void kvm_mmu_unload(struct kvm_vcpu *vcpu);
ebeace86 624
270fd9b9
AK		 625int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
626
ebeace86
AK		 627static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
628 u32 error_code)
629{
ebeace86
AK		 630 return vcpu->mmu.page_fault(vcpu, gva, error_code);
631}
da4a00f0 632
22d95b12
AK		 633static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
634{
635 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
636 __kvm_mmu_free_some_pages(vcpu);
637}
638
17c3ba9d
AK		 639static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
640{
641 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
642 return 0;
643
644 return kvm_mmu_load(vcpu);
645}
646
a9058ecd
AK		 647static inline int is_long_mode(struct kvm_vcpu *vcpu)
648{
649#ifdef CONFIG_X86_64
650 return vcpu->shadow_efer & EFER_LME;
651#else
652 return 0;
653#endif
654}
655
6aa8b732
AK		 656static inline int is_pae(struct kvm_vcpu *vcpu)
657{
66aee91a 658 return vcpu->cr4 & X86_CR4_PAE;
6aa8b732
AK		 659}
660
661static inline int is_pse(struct kvm_vcpu *vcpu)
662{
66aee91a 663 return vcpu->cr4 & X86_CR4_PSE;
6aa8b732
AK		 664}
665
666static inline int is_paging(struct kvm_vcpu *vcpu)
667{
707d92fa 668 return vcpu->cr0 & X86_CR0_PG;
6aa8b732
AK		 669}
670
671static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
672{
673 return slot - kvm->memslots;
674}
675
676static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
677{
678 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
679
5972e953 680 return (struct kvm_mmu_page *)page_private(page);
6aa8b732
AK		 681}
682
683static inline u16 read_fs(void)
684{
685 u16 seg;
686 asm ("mov %%fs, %0" : "=g"(seg));
687 return seg;
688}
689
690static inline u16 read_gs(void)
691{
692 u16 seg;
693 asm ("mov %%gs, %0" : "=g"(seg));
694 return seg;
695}
696
697static inline u16 read_ldt(void)
698{
699 u16 ldt;
700 asm ("sldt %0" : "=g"(ldt));
701 return ldt;
702}
703
704static inline void load_fs(u16 sel)
705{
706 asm ("mov %0, %%fs" : : "rm"(sel));
707}
708
709static inline void load_gs(u16 sel)
710{
711 asm ("mov %0, %%gs" : : "rm"(sel));
712}
713
714#ifndef load_ldt
715static inline void load_ldt(u16 sel)
716{
a0610ddf 717 asm ("lldt %0" : : "rm"(sel));
6aa8b732
AK		 718}
719#endif
720
721static inline void get_idt(struct descriptor_table *table)
722{
723 asm ("sidt %0" : "=m"(*table));
724}
725
726static inline void get_gdt(struct descriptor_table *table)
727{
728 asm ("sgdt %0" : "=m"(*table));
729}
730
731static inline unsigned long read_tr_base(void)
732{
733 u16 tr;
734 asm ("str %0" : "=g"(tr));
735 return segment_base(tr);
736}
737
05b3e0c2 738#ifdef CONFIG_X86_64
6aa8b732
AK		 739static inline unsigned long read_msr(unsigned long msr)
740{
741 u64 value;
742
743 rdmsrl(msr, value);
744 return value;
745}
746#endif
747
b114b080 748static inline void fx_save(struct i387_fxsave_struct *image)
6aa8b732
AK		 749{
750 asm ("fxsave (%0)":: "r" (image));
751}
752
b114b080 753static inline void fx_restore(struct i387_fxsave_struct *image)
6aa8b732
AK		 754{
755 asm ("fxrstor (%0)":: "r" (image));
756}
757
758static inline void fpu_init(void)
759{
760 asm ("finit");
761}
762
763static inline u32 get_rdx_init_val(void)
764{
765 return 0x600; /* P6 family */
766}
767
768#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
769#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
770#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
771#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
772#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
773#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
774#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
775#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
776#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
777
778#define MSR_IA32_TIME_STAMP_COUNTER 0x010
779
780#define TSS_IOPB_BASE_OFFSET 0x66
781#define TSS_BASE_SIZE 0x68
782#define TSS_IOPB_SIZE (65536 / 8)
783#define TSS_REDIRECTION_SIZE (256 / 8)
784#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
785
6aa8b732 786#endif