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KVM: Cleanup string I/O instruction emulation
[GitHub/mt8127/android_kernel_alcatel_ttab.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 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;
234 u32 request_irq_exits;
235 u32 irq_exits;
e6adf283 236 u32 light_exits;
2cc51560 237 u32 efer_reload;
1165f5fe
AK		 238};
239
2eeb2e94
GH		 240struct kvm_io_device {
241 void (*read)(struct kvm_io_device *this,
242 gpa_t addr,
243 int len,
244 void *val);
245 void (*write)(struct kvm_io_device *this,
246 gpa_t addr,
247 int len,
248 const void *val);
249 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
250 void (*destructor)(struct kvm_io_device *this);
251
252 void *private;
253};
254
255static inline void kvm_iodevice_read(struct kvm_io_device *dev,
256 gpa_t addr,
257 int len,
258 void *val)
259{
260 dev->read(dev, addr, len, val);
261}
262
263static inline void kvm_iodevice_write(struct kvm_io_device *dev,
264 gpa_t addr,
265 int len,
266 const void *val)
267{
268 dev->write(dev, addr, len, val);
269}
270
271static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
272{
273 return dev->in_range(dev, addr);
274}
275
276static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
277{
74906345
ED		 278 if (dev->destructor)
279 dev->destructor(dev);
2eeb2e94
GH		 280}
281
282/*
283 * It would be nice to use something smarter than a linear search, TBD...
284 * Thankfully we dont expect many devices to register (famous last words :),
285 * so until then it will suffice. At least its abstracted so we can change
286 * in one place.
287 */
288struct kvm_io_bus {
289 int dev_count;
290#define NR_IOBUS_DEVS 6
291 struct kvm_io_device *devs[NR_IOBUS_DEVS];
292};
293
294void kvm_io_bus_init(struct kvm_io_bus *bus);
295void kvm_io_bus_destroy(struct kvm_io_bus *bus);
296struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
297void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
298 struct kvm_io_device *dev);
299
6aa8b732
AK		 300struct kvm_vcpu {
301 struct kvm *kvm;
15ad7146 302 struct preempt_notifier preempt_notifier;
dad3795d 303 int vcpu_id;
6aa8b732
AK		 304 struct mutex mutex;
305 int cpu;
0cc5064d 306 u64 host_tsc;
9a2bb7f4 307 struct kvm_run *run;
c1150d8c 308 int interrupt_window_open;
d9e368d6
AK		 309 int guest_mode;
310 unsigned long requests;
6aa8b732 311 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
9eb829ce 312 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
6aa8b732
AK		 313 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
314 unsigned long rip; /* needs vcpu_load_rsp_rip() */
315
316 unsigned long cr0;
317 unsigned long cr2;
318 unsigned long cr3;
102d8325
IM		 319 gpa_t para_state_gpa;
320 struct page *para_state_page;
321 gpa_t hypercall_gpa;
6aa8b732
AK		 322 unsigned long cr4;
323 unsigned long cr8;
1342d353 324 u64 pdptrs[4]; /* pae */
6aa8b732
AK		 325 u64 shadow_efer;
326 u64 apic_base;
6f00e68f 327 u64 ia32_misc_enable_msr;
6aa8b732 328
6aa8b732
AK		 329 struct kvm_mmu mmu;
330
714b93da
AK		 331 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
332 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
d3d25b04
AK		 333 struct kvm_mmu_memory_cache mmu_page_cache;
334 struct kvm_mmu_memory_cache mmu_page_header_cache;
714b93da 335
86a5ba02
AK		 336 gfn_t last_pt_write_gfn;
337 int last_pt_write_count;
338
6aa8b732
AK		 339 struct kvm_guest_debug guest_debug;
340
b114b080
RR		 341 struct i387_fxsave_struct host_fx_image;
342 struct i387_fxsave_struct guest_fx_image;
7807fa6c 343 int fpu_active;
7702fd1f 344 int guest_fpu_loaded;
6aa8b732
AK		 345
346 int mmio_needed;
347 int mmio_read_completed;
348 int mmio_is_write;
349 int mmio_size;
350 unsigned char mmio_data[8];
351 gpa_t mmio_phys_addr;
e7df56e4 352 gva_t mmio_fault_cr2;
039576c0
AK		 353 struct kvm_pio_request pio;
354 void *pio_data;
6aa8b732 355
1961d276
AK		 356 int sigset_active;
357 sigset_t sigset;
358
1165f5fe
AK		 359 struct kvm_stat stat;
360
6aa8b732
AK		 361 struct {
362 int active;
363 u8 save_iopl;
364 struct kvm_save_segment {
365 u16 selector;
366 unsigned long base;
367 u32 limit;
368 u32 ar;
369 } tr, es, ds, fs, gs;
370 } rmode;
72d6e5a0 371 int halt_request; /* real mode on Intel only */
06465c5a
AK		 372
373 int cpuid_nent;
374 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
6aa8b732
AK		 375};
376
e8207547
AK		 377struct kvm_mem_alias {
378 gfn_t base_gfn;
379 unsigned long npages;
380 gfn_t target_gfn;
381};
382
6aa8b732
AK		 383struct kvm_memory_slot {
384 gfn_t base_gfn;
385 unsigned long npages;
386 unsigned long flags;
387 struct page **phys_mem;
388 unsigned long *dirty_bitmap;
389};
390
391struct kvm {
11ec2804 392 struct mutex lock; /* protects everything except vcpus */
e8207547
AK		 393 int naliases;
394 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
6aa8b732
AK		 395 int nmemslots;
396 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
cea0f0e7
AK		 397 /*
398 * Hash table of struct kvm_mmu_page.
399 */
6aa8b732 400 struct list_head active_mmu_pages;
ebeace86 401 int n_free_mmu_pages;
cea0f0e7 402 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
fb3f0f51 403 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
6aa8b732
AK		 404 int memory_config_version;
405 int busy;
cd4a4e53 406 unsigned long rmap_overflow;
133de902 407 struct list_head vm_list;
bccf2150 408 struct file *filp;
2eeb2e94 409 struct kvm_io_bus mmio_bus;
74906345 410 struct kvm_io_bus pio_bus;
6aa8b732
AK		 411};
412
6aa8b732
AK		 413struct descriptor_table {
414 u16 limit;
415 unsigned long base;
416} __attribute__((packed));
417
418struct kvm_arch_ops {
419 int (*cpu_has_kvm_support)(void); /* __init */
420 int (*disabled_by_bios)(void); /* __init */
421 void (*hardware_enable)(void *dummy); /* __init */
422 void (*hardware_disable)(void *dummy);
002c7f7c 423 void (*check_processor_compatibility)(void *rtn);
6aa8b732
AK		 424 int (*hardware_setup)(void); /* __init */
425 void (*hardware_unsetup)(void); /* __exit */
426
fb3f0f51
RR		 427 /* Create, but do not attach this VCPU */
428 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
6aa8b732
AK		 429 void (*vcpu_free)(struct kvm_vcpu *vcpu);
430
15ad7146 431 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
6aa8b732 432 void (*vcpu_put)(struct kvm_vcpu *vcpu);
774c47f1 433 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
6aa8b732
AK		 434
435 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
436 struct kvm_debug_guest *dbg);
437 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
438 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
439 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
440 void (*get_segment)(struct kvm_vcpu *vcpu,
441 struct kvm_segment *var, int seg);
442 void (*set_segment)(struct kvm_vcpu *vcpu,
443 struct kvm_segment *var, int seg);
6aa8b732 444 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
25c4c276 445 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
6aa8b732 446 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
6aa8b732
AK		 447 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
448 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
449 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
450 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
451 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
452 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
453 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
454 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
455 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
456 int *exception);
457 void (*cache_regs)(struct kvm_vcpu *vcpu);
458 void (*decache_regs)(struct kvm_vcpu *vcpu);
459 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
460 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
461
462 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
463 void (*tlb_flush)(struct kvm_vcpu *vcpu);
464 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
465 unsigned long addr, u32 err_code);
466
467 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
468
469 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
6aa8b732 470 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
102d8325
IM		 471 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
472 unsigned char *hypercall_addr);
6aa8b732
AK		 473};
474
6aa8b732
AK		 475extern struct kvm_arch_ops *kvm_arch_ops;
476
f0242478
RR		 477/* The guest did something we don't support. */
478#define pr_unimpl(vcpu, fmt, ...) \
479 do { \
480 if (printk_ratelimit()) \
481 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
482 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
483 } while(0)
484
6aa8b732
AK		 485#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
486#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
487
fb3f0f51
RR		 488int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
489void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
490
c16f862d
RR		 491int kvm_init_arch(struct kvm_arch_ops *ops, unsigned int vcpu_size,
492 struct module *module);
6aa8b732
AK		 493void kvm_exit_arch(void);
494
b5a33a75
AK		 495int kvm_mmu_module_init(void);
496void kvm_mmu_module_exit(void);
497
6aa8b732 498void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
8018c27b
IM		 499int kvm_mmu_create(struct kvm_vcpu *vcpu);
500int kvm_mmu_setup(struct kvm_vcpu *vcpu);
6aa8b732
AK		 501
502int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
90cb0529
AK		 503void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
504void kvm_mmu_zap_all(struct kvm *kvm);
6aa8b732
AK		 505
506hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
507#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
508#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
509static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
510hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
039576c0 511struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732
AK		 512
513void kvm_emulator_want_group7_invlpg(void);
514
515extern hpa_t bad_page_address;
516
954bbbc2 517struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
6aa8b732
AK		 518struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
519void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
520
521enum emulation_result {
522 EMULATE_DONE, /* no further processing */
523 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
524 EMULATE_FAIL, /* can't emulate this instruction */
525};
526
527int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
528 unsigned long cr2, u16 error_code);
529void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
530void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
531void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
532 unsigned long *rflags);
533
534unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
535void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
536 unsigned long *rflags);
35f3f286
AK		 537int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
538int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
6aa8b732
AK		 539
540struct x86_emulate_ctxt;
541
039576c0
AK		 542int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
543 int size, unsigned long count, int string, int down,
544 gva_t address, int rep, unsigned port);
06465c5a 545void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
d3bef15f 546int kvm_emulate_halt(struct kvm_vcpu *vcpu);
6aa8b732
AK		 547int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
548int emulate_clts(struct kvm_vcpu *vcpu);
549int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
550 unsigned long *dest);
551int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
552 unsigned long value);
553
554void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
555void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
556void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
557void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
558void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
559
3bab1f5d
AK		 560int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
561int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
6aa8b732
AK		 562
563void fx_init(struct kvm_vcpu *vcpu);
564
6aa8b732 565void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f
AK		 566void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
567void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 568void kvm_flush_remote_tlbs(struct kvm *kvm);
6aa8b732 569
e7d5d76c
LV		 570int emulator_read_std(unsigned long addr,
571 void *val,
572 unsigned int bytes,
573 struct kvm_vcpu *vcpu);
574int emulator_write_emulated(unsigned long addr,
575 const void *val,
576 unsigned int bytes,
577 struct kvm_vcpu *vcpu);
6aa8b732
AK		 578
579unsigned long segment_base(u16 selector);
580
09072daf 581void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
fe551881 582 const u8 *new, int bytes);
a436036b 583int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
22d95b12 584void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
17c3ba9d
AK		 585int kvm_mmu_load(struct kvm_vcpu *vcpu);
586void kvm_mmu_unload(struct kvm_vcpu *vcpu);
ebeace86 587
270fd9b9
AK		 588int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
589
ebeace86
AK		 590static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
591 u32 error_code)
592{
ebeace86
AK		 593 return vcpu->mmu.page_fault(vcpu, gva, error_code);
594}
da4a00f0 595
22d95b12
AK		 596static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
597{
598 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
599 __kvm_mmu_free_some_pages(vcpu);
600}
601
17c3ba9d
AK		 602static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
603{
604 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
605 return 0;
606
607 return kvm_mmu_load(vcpu);
608}
609
a9058ecd
AK		 610static inline int is_long_mode(struct kvm_vcpu *vcpu)
611{
612#ifdef CONFIG_X86_64
613 return vcpu->shadow_efer & EFER_LME;
614#else
615 return 0;
616#endif
617}
618
6aa8b732
AK		 619static inline int is_pae(struct kvm_vcpu *vcpu)
620{
66aee91a 621 return vcpu->cr4 & X86_CR4_PAE;
6aa8b732
AK		 622}
623
624static inline int is_pse(struct kvm_vcpu *vcpu)
625{
66aee91a 626 return vcpu->cr4 & X86_CR4_PSE;
6aa8b732
AK		 627}
628
629static inline int is_paging(struct kvm_vcpu *vcpu)
630{
707d92fa 631 return vcpu->cr0 & X86_CR0_PG;
6aa8b732
AK		 632}
633
634static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
635{
636 return slot - kvm->memslots;
637}
638
639static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
640{
641 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
642
5972e953 643 return (struct kvm_mmu_page *)page_private(page);
6aa8b732
AK		 644}
645
646static inline u16 read_fs(void)
647{
648 u16 seg;
649 asm ("mov %%fs, %0" : "=g"(seg));
650 return seg;
651}
652
653static inline u16 read_gs(void)
654{
655 u16 seg;
656 asm ("mov %%gs, %0" : "=g"(seg));
657 return seg;
658}
659
660static inline u16 read_ldt(void)
661{
662 u16 ldt;
663 asm ("sldt %0" : "=g"(ldt));
664 return ldt;
665}
666
667static inline void load_fs(u16 sel)
668{
669 asm ("mov %0, %%fs" : : "rm"(sel));
670}
671
672static inline void load_gs(u16 sel)
673{
674 asm ("mov %0, %%gs" : : "rm"(sel));
675}
676
677#ifndef load_ldt
678static inline void load_ldt(u16 sel)
679{
a0610ddf 680 asm ("lldt %0" : : "rm"(sel));
6aa8b732
AK		 681}
682#endif
683
684static inline void get_idt(struct descriptor_table *table)
685{
686 asm ("sidt %0" : "=m"(*table));
687}
688
689static inline void get_gdt(struct descriptor_table *table)
690{
691 asm ("sgdt %0" : "=m"(*table));
692}
693
694static inline unsigned long read_tr_base(void)
695{
696 u16 tr;
697 asm ("str %0" : "=g"(tr));
698 return segment_base(tr);
699}
700
05b3e0c2 701#ifdef CONFIG_X86_64
6aa8b732
AK		 702static inline unsigned long read_msr(unsigned long msr)
703{
704 u64 value;
705
706 rdmsrl(msr, value);
707 return value;
708}
709#endif
710
b114b080 711static inline void fx_save(struct i387_fxsave_struct *image)
6aa8b732
AK		 712{
713 asm ("fxsave (%0)":: "r" (image));
714}
715
b114b080 716static inline void fx_restore(struct i387_fxsave_struct *image)
6aa8b732
AK		 717{
718 asm ("fxrstor (%0)":: "r" (image));
719}
720
721static inline void fpu_init(void)
722{
723 asm ("finit");
724}
725
726static inline u32 get_rdx_init_val(void)
727{
728 return 0x600; /* P6 family */
729}
730
731#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
732#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
733#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
734#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
735#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
736#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
737#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
738#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
739#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
740
741#define MSR_IA32_TIME_STAMP_COUNTER 0x010
742
743#define TSS_IOPB_BASE_OFFSET 0x66
744#define TSS_BASE_SIZE 0x68
745#define TSS_IOPB_SIZE (65536 / 8)
746#define TSS_REDIRECTION_SIZE (256 / 8)
747#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
748
6aa8b732 749#endif
kernel source for telekom puls (alcatel/mediatek)