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KVM: Hoist kvm_mmu_reload() out of the critical section
[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>
e8edc6e0 16#include <asm/signal.h>
6aa8b732
AK		 17
18#include "vmx.h"
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
143struct vmcs {
144 u32 revision_id;
145 u32 abort;
146 char data[0];
147};
148
149#define vmx_msr_entry kvm_msr_entry
150
151struct kvm_vcpu;
152
153/*
154 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
155 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
156 * mode.
157 */
158struct kvm_mmu {
159 void (*new_cr3)(struct kvm_vcpu *vcpu);
160 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
6aa8b732
AK		 161 void (*free)(struct kvm_vcpu *vcpu);
162 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
163 hpa_t root_hpa;
164 int root_level;
165 int shadow_root_level;
17ac10ad
AK		 166
167 u64 *pae_root;
6aa8b732
AK		 168};
169
714b93da
AK		 170#define KVM_NR_MEM_OBJS 20
171
172struct kvm_mmu_memory_cache {
173 int nobjs;
174 void *objects[KVM_NR_MEM_OBJS];
175};
176
177/*
178 * We don't want allocation failures within the mmu code, so we preallocate
179 * enough memory for a single page fault in a cache.
180 */
6aa8b732
AK		 181struct kvm_guest_debug {
182 int enabled;
183 unsigned long bp[4];
184 int singlestep;
185};
186
187enum {
188 VCPU_REGS_RAX = 0,
189 VCPU_REGS_RCX = 1,
190 VCPU_REGS_RDX = 2,
191 VCPU_REGS_RBX = 3,
192 VCPU_REGS_RSP = 4,
193 VCPU_REGS_RBP = 5,
194 VCPU_REGS_RSI = 6,
195 VCPU_REGS_RDI = 7,
05b3e0c2 196#ifdef CONFIG_X86_64
6aa8b732
AK		 197 VCPU_REGS_R8 = 8,
198 VCPU_REGS_R9 = 9,
199 VCPU_REGS_R10 = 10,
200 VCPU_REGS_R11 = 11,
201 VCPU_REGS_R12 = 12,
202 VCPU_REGS_R13 = 13,
203 VCPU_REGS_R14 = 14,
204 VCPU_REGS_R15 = 15,
205#endif
206 NR_VCPU_REGS
207};
208
209enum {
210 VCPU_SREG_CS,
211 VCPU_SREG_DS,
212 VCPU_SREG_ES,
213 VCPU_SREG_FS,
214 VCPU_SREG_GS,
215 VCPU_SREG_SS,
216 VCPU_SREG_TR,
217 VCPU_SREG_LDTR,
218};
219
039576c0
AK		 220struct kvm_pio_request {
221 unsigned long count;
222 int cur_count;
223 struct page *guest_pages[2];
224 unsigned guest_page_offset;
225 int in;
74906345 226 int port;
039576c0
AK		 227 int size;
228 int string;
229 int down;
230 int rep;
231};
232
1165f5fe
AK		 233struct kvm_stat {
234 u32 pf_fixed;
235 u32 pf_guest;
236 u32 tlb_flush;
237 u32 invlpg;
238
239 u32 exits;
240 u32 io_exits;
241 u32 mmio_exits;
242 u32 signal_exits;
243 u32 irq_window_exits;
244 u32 halt_exits;
245 u32 request_irq_exits;
246 u32 irq_exits;
e6adf283 247 u32 light_exits;
2cc51560 248 u32 efer_reload;
1165f5fe
AK		 249};
250
2eeb2e94
GH		 251struct kvm_io_device {
252 void (*read)(struct kvm_io_device *this,
253 gpa_t addr,
254 int len,
255 void *val);
256 void (*write)(struct kvm_io_device *this,
257 gpa_t addr,
258 int len,
259 const void *val);
260 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
261 void (*destructor)(struct kvm_io_device *this);
262
263 void *private;
264};
265
266static inline void kvm_iodevice_read(struct kvm_io_device *dev,
267 gpa_t addr,
268 int len,
269 void *val)
270{
271 dev->read(dev, addr, len, val);
272}
273
274static inline void kvm_iodevice_write(struct kvm_io_device *dev,
275 gpa_t addr,
276 int len,
277 const void *val)
278{
279 dev->write(dev, addr, len, val);
280}
281
282static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
283{
284 return dev->in_range(dev, addr);
285}
286
287static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
288{
74906345
ED		 289 if (dev->destructor)
290 dev->destructor(dev);
2eeb2e94
GH		 291}
292
293/*
294 * It would be nice to use something smarter than a linear search, TBD...
295 * Thankfully we dont expect many devices to register (famous last words :),
296 * so until then it will suffice. At least its abstracted so we can change
297 * in one place.
298 */
299struct kvm_io_bus {
300 int dev_count;
301#define NR_IOBUS_DEVS 6
302 struct kvm_io_device *devs[NR_IOBUS_DEVS];
303};
304
305void kvm_io_bus_init(struct kvm_io_bus *bus);
306void kvm_io_bus_destroy(struct kvm_io_bus *bus);
307struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
308void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
309 struct kvm_io_device *dev);
310
6aa8b732
AK		 311struct kvm_vcpu {
312 struct kvm *kvm;
dad3795d 313 int vcpu_id;
6aa8b732
AK		 314 union {
315 struct vmcs *vmcs;
316 struct vcpu_svm *svm;
317 };
318 struct mutex mutex;
319 int cpu;
320 int launched;
0cc5064d 321 u64 host_tsc;
9a2bb7f4 322 struct kvm_run *run;
c1150d8c 323 int interrupt_window_open;
d9e368d6
AK		 324 int guest_mode;
325 unsigned long requests;
6aa8b732 326 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
9eb829ce 327 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
6aa8b732
AK		 328 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
329 unsigned long rip; /* needs vcpu_load_rsp_rip() */
330
331 unsigned long cr0;
332 unsigned long cr2;
333 unsigned long cr3;
102d8325
IM		 334 gpa_t para_state_gpa;
335 struct page *para_state_page;
336 gpa_t hypercall_gpa;
6aa8b732
AK		 337 unsigned long cr4;
338 unsigned long cr8;
1342d353 339 u64 pdptrs[4]; /* pae */
6aa8b732
AK		 340 u64 shadow_efer;
341 u64 apic_base;
6f00e68f 342 u64 ia32_misc_enable_msr;
6aa8b732 343 int nmsrs;
a75beee6 344 int save_nmsrs;
2cc51560 345 int msr_offset_efer;
a75beee6
ED		 346#ifdef CONFIG_X86_64
347 int msr_offset_kernel_gs_base;
348#endif
6aa8b732
AK		 349 struct vmx_msr_entry *guest_msrs;
350 struct vmx_msr_entry *host_msrs;
351
6aa8b732
AK		 352 struct kvm_mmu mmu;
353
714b93da
AK		 354 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
355 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
d3d25b04
AK		 356 struct kvm_mmu_memory_cache mmu_page_cache;
357 struct kvm_mmu_memory_cache mmu_page_header_cache;
714b93da 358
86a5ba02
AK		 359 gfn_t last_pt_write_gfn;
360 int last_pt_write_count;
361
6aa8b732
AK		 362 struct kvm_guest_debug guest_debug;
363
364 char fx_buf[FX_BUF_SIZE];
365 char *host_fx_image;
366 char *guest_fx_image;
7807fa6c 367 int fpu_active;
7702fd1f 368 int guest_fpu_loaded;
33ed6329
AK		 369 struct vmx_host_state {
370 int loaded;
371 u16 fs_sel, gs_sel, ldt_sel;
372 int fs_gs_ldt_reload_needed;
373 } vmx_host_state;
6aa8b732
AK		 374
375 int mmio_needed;
376 int mmio_read_completed;
377 int mmio_is_write;
378 int mmio_size;
379 unsigned char mmio_data[8];
380 gpa_t mmio_phys_addr;
e7df56e4 381 gva_t mmio_fault_cr2;
039576c0
AK		 382 struct kvm_pio_request pio;
383 void *pio_data;
6aa8b732 384
1961d276
AK		 385 int sigset_active;
386 sigset_t sigset;
387
1165f5fe
AK		 388 struct kvm_stat stat;
389
6aa8b732
AK		 390 struct {
391 int active;
392 u8 save_iopl;
393 struct kvm_save_segment {
394 u16 selector;
395 unsigned long base;
396 u32 limit;
397 u32 ar;
398 } tr, es, ds, fs, gs;
399 } rmode;
72d6e5a0 400 int halt_request; /* real mode on Intel only */
06465c5a
AK		 401
402 int cpuid_nent;
403 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
6aa8b732
AK		 404};
405
e8207547
AK		 406struct kvm_mem_alias {
407 gfn_t base_gfn;
408 unsigned long npages;
409 gfn_t target_gfn;
410};
411
6aa8b732
AK		 412struct kvm_memory_slot {
413 gfn_t base_gfn;
414 unsigned long npages;
415 unsigned long flags;
416 struct page **phys_mem;
417 unsigned long *dirty_bitmap;
418};
419
420struct kvm {
421 spinlock_t lock; /* protects everything except vcpus */
e8207547
AK		 422 int naliases;
423 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
6aa8b732
AK		 424 int nmemslots;
425 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
cea0f0e7
AK		 426 /*
427 * Hash table of struct kvm_mmu_page.
428 */
6aa8b732 429 struct list_head active_mmu_pages;
ebeace86 430 int n_free_mmu_pages;
cea0f0e7 431 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
39c3b86e 432 int nvcpus;
6aa8b732
AK		 433 struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
434 int memory_config_version;
435 int busy;
cd4a4e53 436 unsigned long rmap_overflow;
133de902 437 struct list_head vm_list;
bccf2150 438 struct file *filp;
2eeb2e94 439 struct kvm_io_bus mmio_bus;
74906345 440 struct kvm_io_bus pio_bus;
6aa8b732
AK		 441};
442
6aa8b732
AK		 443struct descriptor_table {
444 u16 limit;
445 unsigned long base;
446} __attribute__((packed));
447
448struct kvm_arch_ops {
449 int (*cpu_has_kvm_support)(void); /* __init */
450 int (*disabled_by_bios)(void); /* __init */
451 void (*hardware_enable)(void *dummy); /* __init */
452 void (*hardware_disable)(void *dummy);
453 int (*hardware_setup)(void); /* __init */
454 void (*hardware_unsetup)(void); /* __exit */
455
456 int (*vcpu_create)(struct kvm_vcpu *vcpu);
457 void (*vcpu_free)(struct kvm_vcpu *vcpu);
458
bccf2150 459 void (*vcpu_load)(struct kvm_vcpu *vcpu);
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);
465 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
466 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
467 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
468 void (*get_segment)(struct kvm_vcpu *vcpu,
469 struct kvm_segment *var, int seg);
470 void (*set_segment)(struct kvm_vcpu *vcpu,
471 struct kvm_segment *var, int seg);
6aa8b732 472 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
25c4c276 473 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
6aa8b732 474 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
6aa8b732
AK		 475 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
476 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
477 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
478 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
479 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
480 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
481 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
482 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
483 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
484 int *exception);
485 void (*cache_regs)(struct kvm_vcpu *vcpu);
486 void (*decache_regs)(struct kvm_vcpu *vcpu);
487 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
488 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
489
490 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
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
497 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
498 int (*vcpu_setup)(struct kvm_vcpu *vcpu);
499 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
102d8325
IM		 500 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
501 unsigned char *hypercall_addr);
6aa8b732
AK		 502};
503
6aa8b732
AK		 504extern struct kvm_arch_ops *kvm_arch_ops;
505
506#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
507#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
508
509int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
510void kvm_exit_arch(void);
511
b5a33a75
AK		 512int kvm_mmu_module_init(void);
513void kvm_mmu_module_exit(void);
514
6aa8b732 515void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
8018c27b
IM		 516int kvm_mmu_create(struct kvm_vcpu *vcpu);
517int kvm_mmu_setup(struct kvm_vcpu *vcpu);
6aa8b732
AK		 518
519int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
90cb0529
AK		 520void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
521void kvm_mmu_zap_all(struct kvm *kvm);
6aa8b732
AK		 522
523hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
524#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
525#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
526static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
527hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
039576c0 528struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732
AK		 529
530void kvm_emulator_want_group7_invlpg(void);
531
532extern hpa_t bad_page_address;
533
954bbbc2 534struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
6aa8b732
AK		 535struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
536void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
537
538enum emulation_result {
539 EMULATE_DONE, /* no further processing */
540 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
541 EMULATE_FAIL, /* can't emulate this instruction */
542};
543
544int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
545 unsigned long cr2, u16 error_code);
546void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
547void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
548void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
549 unsigned long *rflags);
550
551unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
552void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
553 unsigned long *rflags);
35f3f286
AK		 554int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
555int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
6aa8b732
AK		 556
557struct x86_emulate_ctxt;
558
039576c0
AK		 559int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
560 int size, unsigned long count, int string, int down,
561 gva_t address, int rep, unsigned port);
06465c5a 562void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
d3bef15f 563int kvm_emulate_halt(struct kvm_vcpu *vcpu);
6aa8b732
AK		 564int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
565int emulate_clts(struct kvm_vcpu *vcpu);
566int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
567 unsigned long *dest);
568int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
569 unsigned long value);
570
571void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
572void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
573void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
574void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
575void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
576
3bab1f5d
AK		 577int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
578int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
6aa8b732
AK		 579
580void fx_init(struct kvm_vcpu *vcpu);
581
582void load_msrs(struct vmx_msr_entry *e, int n);
583void save_msrs(struct vmx_msr_entry *e, int n);
584void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f
AK		 585void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
586void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 587void kvm_flush_remote_tlbs(struct kvm *kvm);
6aa8b732
AK		 588
589int kvm_read_guest(struct kvm_vcpu *vcpu,
590 gva_t addr,
591 unsigned long size,
592 void *dest);
593
594int kvm_write_guest(struct kvm_vcpu *vcpu,
595 gva_t addr,
596 unsigned long size,
597 void *data);
598
599unsigned long segment_base(u16 selector);
600
09072daf
AK		 601void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
602 const u8 *old, const u8 *new, int bytes);
a436036b 603int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
22d95b12 604void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
17c3ba9d
AK		 605int kvm_mmu_load(struct kvm_vcpu *vcpu);
606void kvm_mmu_unload(struct kvm_vcpu *vcpu);
ebeace86 607
270fd9b9
AK		 608int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
609
ebeace86
AK		 610static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
611 u32 error_code)
612{
ebeace86
AK		 613 return vcpu->mmu.page_fault(vcpu, gva, error_code);
614}
da4a00f0 615
22d95b12
AK		 616static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
617{
618 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
619 __kvm_mmu_free_some_pages(vcpu);
620}
621
17c3ba9d
AK		 622static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
623{
624 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
625 return 0;
626
627 return kvm_mmu_load(vcpu);
628}
629
a9058ecd
AK		 630static inline int is_long_mode(struct kvm_vcpu *vcpu)
631{
632#ifdef CONFIG_X86_64
633 return vcpu->shadow_efer & EFER_LME;
634#else
635 return 0;
636#endif
637}
638
6aa8b732
AK		 639static inline int is_pae(struct kvm_vcpu *vcpu)
640{
66aee91a 641 return vcpu->cr4 & X86_CR4_PAE;
6aa8b732
AK		 642}
643
644static inline int is_pse(struct kvm_vcpu *vcpu)
645{
66aee91a 646 return vcpu->cr4 & X86_CR4_PSE;
6aa8b732
AK		 647}
648
649static inline int is_paging(struct kvm_vcpu *vcpu)
650{
707d92fa 651 return vcpu->cr0 & X86_CR0_PG;
6aa8b732
AK		 652}
653
654static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
655{
656 return slot - kvm->memslots;
657}
658
659static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
660{
661 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
662
5972e953 663 return (struct kvm_mmu_page *)page_private(page);
6aa8b732
AK		 664}
665
666static inline u16 read_fs(void)
667{
668 u16 seg;
669 asm ("mov %%fs, %0" : "=g"(seg));
670 return seg;
671}
672
673static inline u16 read_gs(void)
674{
675 u16 seg;
676 asm ("mov %%gs, %0" : "=g"(seg));
677 return seg;
678}
679
680static inline u16 read_ldt(void)
681{
682 u16 ldt;
683 asm ("sldt %0" : "=g"(ldt));
684 return ldt;
685}
686
687static inline void load_fs(u16 sel)
688{
689 asm ("mov %0, %%fs" : : "rm"(sel));
690}
691
692static inline void load_gs(u16 sel)
693{
694 asm ("mov %0, %%gs" : : "rm"(sel));
695}
696
697#ifndef load_ldt
698static inline void load_ldt(u16 sel)
699{
a0610ddf 700 asm ("lldt %0" : : "rm"(sel));
6aa8b732
AK		 701}
702#endif
703
704static inline void get_idt(struct descriptor_table *table)
705{
706 asm ("sidt %0" : "=m"(*table));
707}
708
709static inline void get_gdt(struct descriptor_table *table)
710{
711 asm ("sgdt %0" : "=m"(*table));
712}
713
714static inline unsigned long read_tr_base(void)
715{
716 u16 tr;
717 asm ("str %0" : "=g"(tr));
718 return segment_base(tr);
719}
720
05b3e0c2 721#ifdef CONFIG_X86_64
6aa8b732
AK		 722static inline unsigned long read_msr(unsigned long msr)
723{
724 u64 value;
725
726 rdmsrl(msr, value);
727 return value;
728}
729#endif
730
731static inline void fx_save(void *image)
732{
733 asm ("fxsave (%0)":: "r" (image));
734}
735
736static inline void fx_restore(void *image)
737{
738 asm ("fxrstor (%0)":: "r" (image));
739}
740
741static inline void fpu_init(void)
742{
743 asm ("finit");
744}
745
746static inline u32 get_rdx_init_val(void)
747{
748 return 0x600; /* P6 family */
749}
750
751#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
752#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
753#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
754#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
755#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
756#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
757#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
758#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
759#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
760
761#define MSR_IA32_TIME_STAMP_COUNTER 0x010
762
763#define TSS_IOPB_BASE_OFFSET 0x66
764#define TSS_BASE_SIZE 0x68
765#define TSS_IOPB_SIZE (65536 / 8)
766#define TSS_REDIRECTION_SIZE (256 / 8)
767#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
768
6aa8b732 769#endif
Linux kernel - Deliverables
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