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KVM: Use kmem cache for allocating vcpus
[deliverable/linux.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
6aa8b732 42#define KVM_MEMORY_SLOTS 4
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
AK		 47
48#define FX_IMAGE_SIZE 512
49#define FX_IMAGE_ALIGN 16
50#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
51
52#define DE_VECTOR 0
7807fa6c 53#define NM_VECTOR 7
6aa8b732
AK		 54#define DF_VECTOR 8
55#define TS_VECTOR 10
56#define NP_VECTOR 11
57#define SS_VECTOR 12
58#define GP_VECTOR 13
59#define PF_VECTOR 14
60
61#define SELECTOR_TI_MASK (1 << 2)
62#define SELECTOR_RPL_MASK 0x03
63
64#define IOPL_SHIFT 12
65
039576c0
AK		 66#define KVM_PIO_PAGE_OFFSET 1
67
d9e368d6
AK		 68/*
69 * vcpu->requests bit members
70 */
71#define KVM_TLB_FLUSH 0
72
6aa8b732
AK		 73/*
74 * Address types:
75 *
76 * gva - guest virtual address
77 * gpa - guest physical address
78 * gfn - guest frame number
79 * hva - host virtual address
80 * hpa - host physical address
81 * hfn - host frame number
82 */
83
84typedef unsigned long gva_t;
85typedef u64 gpa_t;
86typedef unsigned long gfn_t;
87
88typedef unsigned long hva_t;
89typedef u64 hpa_t;
90typedef unsigned long hfn_t;
91
cea0f0e7
AK		 92#define NR_PTE_CHAIN_ENTRIES 5
93
94struct kvm_pte_chain {
95 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
96 struct hlist_node link;
97};
98
99/*
100 * kvm_mmu_page_role, below, is defined as:
101 *
102 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
103 * bits 4:7 - page table level for this shadow (1-4)
104 * bits 8:9 - page table quadrant for 2-level guests
105 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
d55e2cb2 106 * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
cea0f0e7
AK		 107 */
108union kvm_mmu_page_role {
109 unsigned word;
110 struct {
111 unsigned glevels : 4;
112 unsigned level : 4;
113 unsigned quadrant : 2;
114 unsigned pad_for_nice_hex_output : 6;
115 unsigned metaphysical : 1;
d55e2cb2 116 unsigned hugepage_access : 3;
cea0f0e7
AK		 117 };
118};
119
6aa8b732
AK		 120struct kvm_mmu_page {
121 struct list_head link;
cea0f0e7
AK		 122 struct hlist_node hash_link;
123
124 /*
125 * The following two entries are used to key the shadow page in the
126 * hash table.
127 */
128 gfn_t gfn;
129 union kvm_mmu_page_role role;
130
47ad8e68 131 u64 *spt;
6aa8b732
AK		 132 unsigned long slot_bitmap; /* One bit set per slot which has memory
133 * in this shadow page.
134 */
cea0f0e7 135 int multimapped; /* More than one parent_pte? */
3bb65a22 136 int root_count; /* Currently serving as active root */
cea0f0e7
AK		 137 union {
138 u64 *parent_pte; /* !multimapped */
139 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
140 };
6aa8b732
AK		 141};
142
6aa8b732 143struct kvm_vcpu;
c16f862d 144extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732
AK		 145
146/*
147 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
148 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
149 * mode.
150 */
151struct kvm_mmu {
152 void (*new_cr3)(struct kvm_vcpu *vcpu);
153 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
6aa8b732
AK		 154 void (*free)(struct kvm_vcpu *vcpu);
155 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
156 hpa_t root_hpa;
157 int root_level;
158 int shadow_root_level;
17ac10ad
AK		 159
160 u64 *pae_root;
6aa8b732
AK		 161};
162
714b93da
AK		 163#define KVM_NR_MEM_OBJS 20
164
165struct kvm_mmu_memory_cache {
166 int nobjs;
167 void *objects[KVM_NR_MEM_OBJS];
168};
169
170/*
171 * We don't want allocation failures within the mmu code, so we preallocate
172 * enough memory for a single page fault in a cache.
173 */
6aa8b732
AK		 174struct kvm_guest_debug {
175 int enabled;
176 unsigned long bp[4];
177 int singlestep;
178};
179
180enum {
181 VCPU_REGS_RAX = 0,
182 VCPU_REGS_RCX = 1,
183 VCPU_REGS_RDX = 2,
184 VCPU_REGS_RBX = 3,
185 VCPU_REGS_RSP = 4,
186 VCPU_REGS_RBP = 5,
187 VCPU_REGS_RSI = 6,
188 VCPU_REGS_RDI = 7,
05b3e0c2 189#ifdef CONFIG_X86_64
6aa8b732
AK		 190 VCPU_REGS_R8 = 8,
191 VCPU_REGS_R9 = 9,
192 VCPU_REGS_R10 = 10,
193 VCPU_REGS_R11 = 11,
194 VCPU_REGS_R12 = 12,
195 VCPU_REGS_R13 = 13,
196 VCPU_REGS_R14 = 14,
197 VCPU_REGS_R15 = 15,
198#endif
199 NR_VCPU_REGS
200};
201
202enum {
203 VCPU_SREG_CS,
204 VCPU_SREG_DS,
205 VCPU_SREG_ES,
206 VCPU_SREG_FS,
207 VCPU_SREG_GS,
208 VCPU_SREG_SS,
209 VCPU_SREG_TR,
210 VCPU_SREG_LDTR,
211};
212
039576c0
AK		 213struct kvm_pio_request {
214 unsigned long count;
215 int cur_count;
216 struct page *guest_pages[2];
217 unsigned guest_page_offset;
218 int in;
74906345 219 int port;
039576c0
AK		 220 int size;
221 int string;
222 int down;
223 int rep;
224};
225
1165f5fe
AK		 226struct kvm_stat {
227 u32 pf_fixed;
228 u32 pf_guest;
229 u32 tlb_flush;
230 u32 invlpg;
231
232 u32 exits;
233 u32 io_exits;
234 u32 mmio_exits;
235 u32 signal_exits;
236 u32 irq_window_exits;
237 u32 halt_exits;
238 u32 request_irq_exits;
239 u32 irq_exits;
e6adf283 240 u32 light_exits;
2cc51560 241 u32 efer_reload;
1165f5fe
AK		 242};
243
2eeb2e94
GH		 244struct kvm_io_device {
245 void (*read)(struct kvm_io_device *this,
246 gpa_t addr,
247 int len,
248 void *val);
249 void (*write)(struct kvm_io_device *this,
250 gpa_t addr,
251 int len,
252 const void *val);
253 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
254 void (*destructor)(struct kvm_io_device *this);
255
256 void *private;
257};
258
259static inline void kvm_iodevice_read(struct kvm_io_device *dev,
260 gpa_t addr,
261 int len,
262 void *val)
263{
264 dev->read(dev, addr, len, val);
265}
266
267static inline void kvm_iodevice_write(struct kvm_io_device *dev,
268 gpa_t addr,
269 int len,
270 const void *val)
271{
272 dev->write(dev, addr, len, val);
273}
274
275static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
276{
277 return dev->in_range(dev, addr);
278}
279
280static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
281{
74906345
ED		 282 if (dev->destructor)
283 dev->destructor(dev);
2eeb2e94
GH		 284}
285
286/*
287 * It would be nice to use something smarter than a linear search, TBD...
288 * Thankfully we dont expect many devices to register (famous last words :),
289 * so until then it will suffice. At least its abstracted so we can change
290 * in one place.
291 */
292struct kvm_io_bus {
293 int dev_count;
294#define NR_IOBUS_DEVS 6
295 struct kvm_io_device *devs[NR_IOBUS_DEVS];
296};
297
298void kvm_io_bus_init(struct kvm_io_bus *bus);
299void kvm_io_bus_destroy(struct kvm_io_bus *bus);
300struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
301void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
302 struct kvm_io_device *dev);
303
6aa8b732
AK		 304struct kvm_vcpu {
305 struct kvm *kvm;
15ad7146 306 struct preempt_notifier preempt_notifier;
dad3795d 307 int vcpu_id;
6aa8b732
AK		 308 struct mutex mutex;
309 int cpu;
0cc5064d 310 u64 host_tsc;
9a2bb7f4 311 struct kvm_run *run;
c1150d8c 312 int interrupt_window_open;
d9e368d6
AK		 313 int guest_mode;
314 unsigned long requests;
6aa8b732 315 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
9eb829ce 316 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
6aa8b732
AK		 317 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
318 unsigned long rip; /* needs vcpu_load_rsp_rip() */
319
320 unsigned long cr0;
321 unsigned long cr2;
322 unsigned long cr3;
102d8325
IM		 323 gpa_t para_state_gpa;
324 struct page *para_state_page;
325 gpa_t hypercall_gpa;
6aa8b732
AK		 326 unsigned long cr4;
327 unsigned long cr8;
1342d353 328 u64 pdptrs[4]; /* pae */
6aa8b732
AK		 329 u64 shadow_efer;
330 u64 apic_base;
6f00e68f 331 u64 ia32_misc_enable_msr;
6aa8b732 332
6aa8b732
AK		 333 struct kvm_mmu mmu;
334
714b93da
AK		 335 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
336 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
d3d25b04
AK		 337 struct kvm_mmu_memory_cache mmu_page_cache;
338 struct kvm_mmu_memory_cache mmu_page_header_cache;
714b93da 339
86a5ba02
AK		 340 gfn_t last_pt_write_gfn;
341 int last_pt_write_count;
342
6aa8b732
AK		 343 struct kvm_guest_debug guest_debug;
344
345 char fx_buf[FX_BUF_SIZE];
346 char *host_fx_image;
347 char *guest_fx_image;
7807fa6c 348 int fpu_active;
7702fd1f 349 int guest_fpu_loaded;
6aa8b732
AK		 350
351 int mmio_needed;
352 int mmio_read_completed;
353 int mmio_is_write;
354 int mmio_size;
355 unsigned char mmio_data[8];
356 gpa_t mmio_phys_addr;
e7df56e4 357 gva_t mmio_fault_cr2;
039576c0
AK		 358 struct kvm_pio_request pio;
359 void *pio_data;
6aa8b732 360
1961d276
AK		 361 int sigset_active;
362 sigset_t sigset;
363
1165f5fe
AK		 364 struct kvm_stat stat;
365
6aa8b732
AK		 366 struct {
367 int active;
368 u8 save_iopl;
369 struct kvm_save_segment {
370 u16 selector;
371 unsigned long base;
372 u32 limit;
373 u32 ar;
374 } tr, es, ds, fs, gs;
375 } rmode;
72d6e5a0 376 int halt_request; /* real mode on Intel only */
06465c5a
AK		 377
378 int cpuid_nent;
379 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
6aa8b732
AK		 380};
381
e8207547
AK		 382struct kvm_mem_alias {
383 gfn_t base_gfn;
384 unsigned long npages;
385 gfn_t target_gfn;
386};
387
6aa8b732
AK		 388struct kvm_memory_slot {
389 gfn_t base_gfn;
390 unsigned long npages;
391 unsigned long flags;
392 struct page **phys_mem;
393 unsigned long *dirty_bitmap;
394};
395
396struct kvm {
11ec2804 397 struct mutex lock; /* protects everything except vcpus */
e8207547
AK		 398 int naliases;
399 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
6aa8b732
AK		 400 int nmemslots;
401 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
cea0f0e7
AK		 402 /*
403 * Hash table of struct kvm_mmu_page.
404 */
6aa8b732 405 struct list_head active_mmu_pages;
ebeace86 406 int n_free_mmu_pages;
cea0f0e7 407 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
fb3f0f51 408 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
6aa8b732
AK		 409 int memory_config_version;
410 int busy;
cd4a4e53 411 unsigned long rmap_overflow;
133de902 412 struct list_head vm_list;
bccf2150 413 struct file *filp;
2eeb2e94 414 struct kvm_io_bus mmio_bus;
74906345 415 struct kvm_io_bus pio_bus;
6aa8b732
AK		 416};
417
6aa8b732
AK		 418struct descriptor_table {
419 u16 limit;
420 unsigned long base;
421} __attribute__((packed));
422
423struct kvm_arch_ops {
424 int (*cpu_has_kvm_support)(void); /* __init */
425 int (*disabled_by_bios)(void); /* __init */
426 void (*hardware_enable)(void *dummy); /* __init */
427 void (*hardware_disable)(void *dummy);
428 int (*hardware_setup)(void); /* __init */
429 void (*hardware_unsetup)(void); /* __exit */
430
fb3f0f51
RR		 431 /* Create, but do not attach this VCPU */
432 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
6aa8b732
AK		 433 void (*vcpu_free)(struct kvm_vcpu *vcpu);
434
15ad7146 435 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
6aa8b732 436 void (*vcpu_put)(struct kvm_vcpu *vcpu);
774c47f1 437 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
6aa8b732
AK		 438
439 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
440 struct kvm_debug_guest *dbg);
441 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
442 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
443 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
444 void (*get_segment)(struct kvm_vcpu *vcpu,
445 struct kvm_segment *var, int seg);
446 void (*set_segment)(struct kvm_vcpu *vcpu,
447 struct kvm_segment *var, int seg);
6aa8b732 448 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
25c4c276 449 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
6aa8b732 450 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
6aa8b732
AK		 451 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
452 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
453 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
454 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
455 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
456 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
457 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
458 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
459 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
460 int *exception);
461 void (*cache_regs)(struct kvm_vcpu *vcpu);
462 void (*decache_regs)(struct kvm_vcpu *vcpu);
463 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
464 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
465
466 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
467 void (*tlb_flush)(struct kvm_vcpu *vcpu);
468 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
469 unsigned long addr, u32 err_code);
470
471 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
472
473 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
6aa8b732 474 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
102d8325
IM		 475 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
476 unsigned char *hypercall_addr);
6aa8b732
AK		 477};
478
6aa8b732
AK		 479extern struct kvm_arch_ops *kvm_arch_ops;
480
481#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
482#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
483
fb3f0f51
RR		 484int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
485void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
486
c16f862d
RR		 487int kvm_init_arch(struct kvm_arch_ops *ops, unsigned int vcpu_size,
488 struct module *module);
6aa8b732
AK		 489void kvm_exit_arch(void);
490
b5a33a75
AK		 491int kvm_mmu_module_init(void);
492void kvm_mmu_module_exit(void);
493
6aa8b732 494void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
8018c27b
IM		 495int kvm_mmu_create(struct kvm_vcpu *vcpu);
496int kvm_mmu_setup(struct kvm_vcpu *vcpu);
6aa8b732
AK		 497
498int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
90cb0529
AK		 499void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
500void kvm_mmu_zap_all(struct kvm *kvm);
6aa8b732
AK		 501
502hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
503#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
504#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
505static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
506hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
039576c0 507struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732
AK		 508
509void kvm_emulator_want_group7_invlpg(void);
510
511extern hpa_t bad_page_address;
512
954bbbc2 513struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
6aa8b732
AK		 514struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
515void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
516
517enum emulation_result {
518 EMULATE_DONE, /* no further processing */
519 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
520 EMULATE_FAIL, /* can't emulate this instruction */
521};
522
523int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
524 unsigned long cr2, u16 error_code);
525void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
526void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
527void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
528 unsigned long *rflags);
529
530unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
531void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
532 unsigned long *rflags);
35f3f286
AK		 533int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
534int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
6aa8b732
AK		 535
536struct x86_emulate_ctxt;
537
039576c0
AK		 538int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
539 int size, unsigned long count, int string, int down,
540 gva_t address, int rep, unsigned port);
06465c5a 541void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
d3bef15f 542int kvm_emulate_halt(struct kvm_vcpu *vcpu);
6aa8b732
AK		 543int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
544int emulate_clts(struct kvm_vcpu *vcpu);
545int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
546 unsigned long *dest);
547int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
548 unsigned long value);
549
550void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
551void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
552void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
553void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
554void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
555
3bab1f5d
AK		 556int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
557int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
6aa8b732
AK		 558
559void fx_init(struct kvm_vcpu *vcpu);
560
6aa8b732 561void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f
AK		 562void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
563void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 564void kvm_flush_remote_tlbs(struct kvm *kvm);
6aa8b732 565
e7d5d76c
LV		 566int emulator_read_std(unsigned long addr,
567 void *val,
568 unsigned int bytes,
569 struct kvm_vcpu *vcpu);
570int emulator_write_emulated(unsigned long addr,
571 const void *val,
572 unsigned int bytes,
573 struct kvm_vcpu *vcpu);
6aa8b732
AK		 574
575unsigned long segment_base(u16 selector);
576
09072daf 577void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
fe551881 578 const u8 *new, int bytes);
a436036b 579int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
22d95b12 580void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
17c3ba9d
AK		 581int kvm_mmu_load(struct kvm_vcpu *vcpu);
582void kvm_mmu_unload(struct kvm_vcpu *vcpu);
ebeace86 583
270fd9b9
AK		 584int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
585
ebeace86
AK		 586static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
587 u32 error_code)
588{
ebeace86
AK		 589 return vcpu->mmu.page_fault(vcpu, gva, error_code);
590}
da4a00f0 591
22d95b12
AK		 592static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
593{
594 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
595 __kvm_mmu_free_some_pages(vcpu);
596}
597
17c3ba9d
AK		 598static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
599{
600 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
601 return 0;
602
603 return kvm_mmu_load(vcpu);
604}
605
a9058ecd
AK		 606static inline int is_long_mode(struct kvm_vcpu *vcpu)
607{
608#ifdef CONFIG_X86_64
609 return vcpu->shadow_efer & EFER_LME;
610#else
611 return 0;
612#endif
613}
614
6aa8b732
AK		 615static inline int is_pae(struct kvm_vcpu *vcpu)
616{
66aee91a 617 return vcpu->cr4 & X86_CR4_PAE;
6aa8b732
AK		 618}
619
620static inline int is_pse(struct kvm_vcpu *vcpu)
621{
66aee91a 622 return vcpu->cr4 & X86_CR4_PSE;
6aa8b732
AK		 623}
624
625static inline int is_paging(struct kvm_vcpu *vcpu)
626{
707d92fa 627 return vcpu->cr0 & X86_CR0_PG;
6aa8b732
AK		 628}
629
630static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
631{
632 return slot - kvm->memslots;
633}
634
635static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
636{
637 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
638
5972e953 639 return (struct kvm_mmu_page *)page_private(page);
6aa8b732
AK		 640}
641
642static inline u16 read_fs(void)
643{
644 u16 seg;
645 asm ("mov %%fs, %0" : "=g"(seg));
646 return seg;
647}
648
649static inline u16 read_gs(void)
650{
651 u16 seg;
652 asm ("mov %%gs, %0" : "=g"(seg));
653 return seg;
654}
655
656static inline u16 read_ldt(void)
657{
658 u16 ldt;
659 asm ("sldt %0" : "=g"(ldt));
660 return ldt;
661}
662
663static inline void load_fs(u16 sel)
664{
665 asm ("mov %0, %%fs" : : "rm"(sel));
666}
667
668static inline void load_gs(u16 sel)
669{
670 asm ("mov %0, %%gs" : : "rm"(sel));
671}
672
673#ifndef load_ldt
674static inline void load_ldt(u16 sel)
675{
a0610ddf 676 asm ("lldt %0" : : "rm"(sel));
6aa8b732
AK		 677}
678#endif
679
680static inline void get_idt(struct descriptor_table *table)
681{
682 asm ("sidt %0" : "=m"(*table));
683}
684
685static inline void get_gdt(struct descriptor_table *table)
686{
687 asm ("sgdt %0" : "=m"(*table));
688}
689
690static inline unsigned long read_tr_base(void)
691{
692 u16 tr;
693 asm ("str %0" : "=g"(tr));
694 return segment_base(tr);
695}
696
05b3e0c2 697#ifdef CONFIG_X86_64
6aa8b732
AK		 698static inline unsigned long read_msr(unsigned long msr)
699{
700 u64 value;
701
702 rdmsrl(msr, value);
703 return value;
704}
705#endif
706
707static inline void fx_save(void *image)
708{
709 asm ("fxsave (%0)":: "r" (image));
710}
711
712static inline void fx_restore(void *image)
713{
714 asm ("fxrstor (%0)":: "r" (image));
715}
716
717static inline void fpu_init(void)
718{
719 asm ("finit");
720}
721
722static inline u32 get_rdx_init_val(void)
723{
724 return 0x600; /* P6 family */
725}
726
727#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
728#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
729#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
730#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
731#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
732#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
733#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
734#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
735#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
736
737#define MSR_IA32_TIME_STAMP_COUNTER 0x010
738
739#define TSS_IOPB_BASE_OFFSET 0x66
740#define TSS_BASE_SIZE 0x68
741#define TSS_IOPB_SIZE (65536 / 8)
742#define TSS_REDIRECTION_SIZE (256 / 8)
743#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
744
6aa8b732 745#endif
Linux kernel - Deliverables
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