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KVM: Trivial: Use standard CR0 flags macros from asm/cpu-features.h
[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
6aa8b732
AK		 22#define CR3_WPT_MASK (1ULL << 3)
23#define CR3_PCD_MASK (1ULL << 4)
24
25#define CR3_RESEVED_BITS 0x07ULL
26#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL)
27#define CR3_FLAGS_MASK ((1ULL << 5) - 1)
28
29#define CR4_VME_MASK (1ULL << 0)
30#define CR4_PSE_MASK (1ULL << 4)
31#define CR4_PAE_MASK (1ULL << 5)
32#define CR4_PGE_MASK (1ULL << 7)
33#define CR4_VMXE_MASK (1ULL << 13)
34
35#define KVM_GUEST_CR0_MASK \
707d92fa
RR		 36 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
37 | X86_CR0_NW | X86_CR0_CD)
6aa8b732 38#define KVM_VM_CR0_ALWAYS_ON \
707d92fa
RR		 39 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
40 | X86_CR0_MP)
6aa8b732
AK		 41#define KVM_GUEST_CR4_MASK \
42 (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
43#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
44#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK)
45
46#define INVALID_PAGE (~(hpa_t)0)
47#define UNMAPPED_GVA (~(gpa_t)0)
48
ef9254df 49#define KVM_MAX_VCPUS 4
e8207547 50#define KVM_ALIAS_SLOTS 4
6aa8b732 51#define KVM_MEMORY_SLOTS 4
7494c0cc 52#define KVM_NUM_MMU_PAGES 1024
ebeace86
AK		 53#define KVM_MIN_FREE_MMU_PAGES 5
54#define KVM_REFILL_PAGES 25
06465c5a 55#define KVM_MAX_CPUID_ENTRIES 40
6aa8b732
AK		 56
57#define FX_IMAGE_SIZE 512
58#define FX_IMAGE_ALIGN 16
59#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
60
61#define DE_VECTOR 0
7807fa6c 62#define NM_VECTOR 7
6aa8b732
AK		 63#define DF_VECTOR 8
64#define TS_VECTOR 10
65#define NP_VECTOR 11
66#define SS_VECTOR 12
67#define GP_VECTOR 13
68#define PF_VECTOR 14
69
70#define SELECTOR_TI_MASK (1 << 2)
71#define SELECTOR_RPL_MASK 0x03
72
73#define IOPL_SHIFT 12
74
039576c0
AK		 75#define KVM_PIO_PAGE_OFFSET 1
76
d9e368d6
AK		 77/*
78 * vcpu->requests bit members
79 */
80#define KVM_TLB_FLUSH 0
81
6aa8b732
AK		 82/*
83 * Address types:
84 *
85 * gva - guest virtual address
86 * gpa - guest physical address
87 * gfn - guest frame number
88 * hva - host virtual address
89 * hpa - host physical address
90 * hfn - host frame number
91 */
92
93typedef unsigned long gva_t;
94typedef u64 gpa_t;
95typedef unsigned long gfn_t;
96
97typedef unsigned long hva_t;
98typedef u64 hpa_t;
99typedef unsigned long hfn_t;
100
cea0f0e7
AK		 101#define NR_PTE_CHAIN_ENTRIES 5
102
103struct kvm_pte_chain {
104 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
105 struct hlist_node link;
106};
107
108/*
109 * kvm_mmu_page_role, below, is defined as:
110 *
111 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
112 * bits 4:7 - page table level for this shadow (1-4)
113 * bits 8:9 - page table quadrant for 2-level guests
114 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
d55e2cb2 115 * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
cea0f0e7
AK		 116 */
117union kvm_mmu_page_role {
118 unsigned word;
119 struct {
120 unsigned glevels : 4;
121 unsigned level : 4;
122 unsigned quadrant : 2;
123 unsigned pad_for_nice_hex_output : 6;
124 unsigned metaphysical : 1;
d55e2cb2 125 unsigned hugepage_access : 3;
cea0f0e7
AK		 126 };
127};
128
6aa8b732
AK		 129struct kvm_mmu_page {
130 struct list_head link;
cea0f0e7
AK		 131 struct hlist_node hash_link;
132
133 /*
134 * The following two entries are used to key the shadow page in the
135 * hash table.
136 */
137 gfn_t gfn;
138 union kvm_mmu_page_role role;
139
47ad8e68 140 u64 *spt;
6aa8b732
AK		 141 unsigned long slot_bitmap; /* One bit set per slot which has memory
142 * in this shadow page.
143 */
cea0f0e7 144 int multimapped; /* More than one parent_pte? */
3bb65a22 145 int root_count; /* Currently serving as active root */
cea0f0e7
AK		 146 union {
147 u64 *parent_pte; /* !multimapped */
148 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
149 };
6aa8b732
AK		 150};
151
152struct vmcs {
153 u32 revision_id;
154 u32 abort;
155 char data[0];
156};
157
158#define vmx_msr_entry kvm_msr_entry
159
160struct kvm_vcpu;
161
162/*
163 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
164 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
165 * mode.
166 */
167struct kvm_mmu {
168 void (*new_cr3)(struct kvm_vcpu *vcpu);
169 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
6aa8b732
AK		 170 void (*free)(struct kvm_vcpu *vcpu);
171 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
172 hpa_t root_hpa;
173 int root_level;
174 int shadow_root_level;
17ac10ad
AK		 175
176 u64 *pae_root;
6aa8b732
AK		 177};
178
714b93da
AK		 179#define KVM_NR_MEM_OBJS 20
180
181struct kvm_mmu_memory_cache {
182 int nobjs;
183 void *objects[KVM_NR_MEM_OBJS];
184};
185
186/*
187 * We don't want allocation failures within the mmu code, so we preallocate
188 * enough memory for a single page fault in a cache.
189 */
6aa8b732
AK		 190struct kvm_guest_debug {
191 int enabled;
192 unsigned long bp[4];
193 int singlestep;
194};
195
196enum {
197 VCPU_REGS_RAX = 0,
198 VCPU_REGS_RCX = 1,
199 VCPU_REGS_RDX = 2,
200 VCPU_REGS_RBX = 3,
201 VCPU_REGS_RSP = 4,
202 VCPU_REGS_RBP = 5,
203 VCPU_REGS_RSI = 6,
204 VCPU_REGS_RDI = 7,
05b3e0c2 205#ifdef CONFIG_X86_64
6aa8b732
AK		 206 VCPU_REGS_R8 = 8,
207 VCPU_REGS_R9 = 9,
208 VCPU_REGS_R10 = 10,
209 VCPU_REGS_R11 = 11,
210 VCPU_REGS_R12 = 12,
211 VCPU_REGS_R13 = 13,
212 VCPU_REGS_R14 = 14,
213 VCPU_REGS_R15 = 15,
214#endif
215 NR_VCPU_REGS
216};
217
218enum {
219 VCPU_SREG_CS,
220 VCPU_SREG_DS,
221 VCPU_SREG_ES,
222 VCPU_SREG_FS,
223 VCPU_SREG_GS,
224 VCPU_SREG_SS,
225 VCPU_SREG_TR,
226 VCPU_SREG_LDTR,
227};
228
039576c0
AK		 229struct kvm_pio_request {
230 unsigned long count;
231 int cur_count;
232 struct page *guest_pages[2];
233 unsigned guest_page_offset;
234 int in;
74906345 235 int port;
039576c0
AK		 236 int size;
237 int string;
238 int down;
239 int rep;
240};
241
1165f5fe
AK		 242struct kvm_stat {
243 u32 pf_fixed;
244 u32 pf_guest;
245 u32 tlb_flush;
246 u32 invlpg;
247
248 u32 exits;
249 u32 io_exits;
250 u32 mmio_exits;
251 u32 signal_exits;
252 u32 irq_window_exits;
253 u32 halt_exits;
254 u32 request_irq_exits;
255 u32 irq_exits;
e6adf283 256 u32 light_exits;
2cc51560 257 u32 efer_reload;
1165f5fe
AK		 258};
259
2eeb2e94
GH		 260struct kvm_io_device {
261 void (*read)(struct kvm_io_device *this,
262 gpa_t addr,
263 int len,
264 void *val);
265 void (*write)(struct kvm_io_device *this,
266 gpa_t addr,
267 int len,
268 const void *val);
269 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
270 void (*destructor)(struct kvm_io_device *this);
271
272 void *private;
273};
274
275static inline void kvm_iodevice_read(struct kvm_io_device *dev,
276 gpa_t addr,
277 int len,
278 void *val)
279{
280 dev->read(dev, addr, len, val);
281}
282
283static inline void kvm_iodevice_write(struct kvm_io_device *dev,
284 gpa_t addr,
285 int len,
286 const void *val)
287{
288 dev->write(dev, addr, len, val);
289}
290
291static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
292{
293 return dev->in_range(dev, addr);
294}
295
296static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
297{
74906345
ED		 298 if (dev->destructor)
299 dev->destructor(dev);
2eeb2e94
GH		 300}
301
302/*
303 * It would be nice to use something smarter than a linear search, TBD...
304 * Thankfully we dont expect many devices to register (famous last words :),
305 * so until then it will suffice. At least its abstracted so we can change
306 * in one place.
307 */
308struct kvm_io_bus {
309 int dev_count;
310#define NR_IOBUS_DEVS 6
311 struct kvm_io_device *devs[NR_IOBUS_DEVS];
312};
313
314void kvm_io_bus_init(struct kvm_io_bus *bus);
315void kvm_io_bus_destroy(struct kvm_io_bus *bus);
316struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
317void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
318 struct kvm_io_device *dev);
319
6aa8b732
AK		 320struct kvm_vcpu {
321 struct kvm *kvm;
dad3795d 322 int vcpu_id;
6aa8b732
AK		 323 union {
324 struct vmcs *vmcs;
325 struct vcpu_svm *svm;
326 };
327 struct mutex mutex;
328 int cpu;
329 int launched;
0cc5064d 330 u64 host_tsc;
9a2bb7f4 331 struct kvm_run *run;
c1150d8c 332 int interrupt_window_open;
d9e368d6
AK		 333 int guest_mode;
334 unsigned long requests;
6aa8b732
AK		 335 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
336#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
337 unsigned long irq_pending[NR_IRQ_WORDS];
338 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
339 unsigned long rip; /* needs vcpu_load_rsp_rip() */
340
341 unsigned long cr0;
342 unsigned long cr2;
343 unsigned long cr3;
102d8325
IM		 344 gpa_t para_state_gpa;
345 struct page *para_state_page;
346 gpa_t hypercall_gpa;
6aa8b732
AK		 347 unsigned long cr4;
348 unsigned long cr8;
1342d353 349 u64 pdptrs[4]; /* pae */
6aa8b732
AK		 350 u64 shadow_efer;
351 u64 apic_base;
6f00e68f 352 u64 ia32_misc_enable_msr;
6aa8b732 353 int nmsrs;
a75beee6 354 int save_nmsrs;
2cc51560 355 int msr_offset_efer;
a75beee6
ED		 356#ifdef CONFIG_X86_64
357 int msr_offset_kernel_gs_base;
358#endif
6aa8b732
AK		 359 struct vmx_msr_entry *guest_msrs;
360 struct vmx_msr_entry *host_msrs;
361
6aa8b732
AK		 362 struct kvm_mmu mmu;
363
714b93da
AK		 364 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
365 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
d3d25b04
AK		 366 struct kvm_mmu_memory_cache mmu_page_cache;
367 struct kvm_mmu_memory_cache mmu_page_header_cache;
714b93da 368
86a5ba02
AK		 369 gfn_t last_pt_write_gfn;
370 int last_pt_write_count;
371
6aa8b732
AK		 372 struct kvm_guest_debug guest_debug;
373
374 char fx_buf[FX_BUF_SIZE];
375 char *host_fx_image;
376 char *guest_fx_image;
7807fa6c 377 int fpu_active;
7702fd1f 378 int guest_fpu_loaded;
33ed6329
AK		 379 struct vmx_host_state {
380 int loaded;
381 u16 fs_sel, gs_sel, ldt_sel;
382 int fs_gs_ldt_reload_needed;
383 } vmx_host_state;
6aa8b732
AK		 384
385 int mmio_needed;
386 int mmio_read_completed;
387 int mmio_is_write;
388 int mmio_size;
389 unsigned char mmio_data[8];
390 gpa_t mmio_phys_addr;
e7df56e4 391 gva_t mmio_fault_cr2;
039576c0
AK		 392 struct kvm_pio_request pio;
393 void *pio_data;
6aa8b732 394
1961d276
AK		 395 int sigset_active;
396 sigset_t sigset;
397
1165f5fe
AK		 398 struct kvm_stat stat;
399
6aa8b732
AK		 400 struct {
401 int active;
402 u8 save_iopl;
403 struct kvm_save_segment {
404 u16 selector;
405 unsigned long base;
406 u32 limit;
407 u32 ar;
408 } tr, es, ds, fs, gs;
409 } rmode;
72d6e5a0 410 int halt_request; /* real mode on Intel only */
06465c5a
AK		 411
412 int cpuid_nent;
413 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
6aa8b732
AK		 414};
415
e8207547
AK		 416struct kvm_mem_alias {
417 gfn_t base_gfn;
418 unsigned long npages;
419 gfn_t target_gfn;
420};
421
6aa8b732
AK		 422struct kvm_memory_slot {
423 gfn_t base_gfn;
424 unsigned long npages;
425 unsigned long flags;
426 struct page **phys_mem;
427 unsigned long *dirty_bitmap;
428};
429
430struct kvm {
431 spinlock_t lock; /* protects everything except vcpus */
e8207547
AK		 432 int naliases;
433 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
6aa8b732
AK		 434 int nmemslots;
435 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
cea0f0e7
AK		 436 /*
437 * Hash table of struct kvm_mmu_page.
438 */
6aa8b732 439 struct list_head active_mmu_pages;
ebeace86 440 int n_free_mmu_pages;
cea0f0e7 441 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
39c3b86e 442 int nvcpus;
6aa8b732
AK		 443 struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
444 int memory_config_version;
445 int busy;
cd4a4e53 446 unsigned long rmap_overflow;
133de902 447 struct list_head vm_list;
bccf2150 448 struct file *filp;
2eeb2e94 449 struct kvm_io_bus mmio_bus;
74906345 450 struct kvm_io_bus pio_bus;
6aa8b732
AK		 451};
452
6aa8b732
AK		 453struct descriptor_table {
454 u16 limit;
455 unsigned long base;
456} __attribute__((packed));
457
458struct kvm_arch_ops {
459 int (*cpu_has_kvm_support)(void); /* __init */
460 int (*disabled_by_bios)(void); /* __init */
461 void (*hardware_enable)(void *dummy); /* __init */
462 void (*hardware_disable)(void *dummy);
463 int (*hardware_setup)(void); /* __init */
464 void (*hardware_unsetup)(void); /* __exit */
465
466 int (*vcpu_create)(struct kvm_vcpu *vcpu);
467 void (*vcpu_free)(struct kvm_vcpu *vcpu);
468
bccf2150 469 void (*vcpu_load)(struct kvm_vcpu *vcpu);
6aa8b732 470 void (*vcpu_put)(struct kvm_vcpu *vcpu);
774c47f1 471 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
6aa8b732
AK		 472
473 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
474 struct kvm_debug_guest *dbg);
475 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
476 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
477 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
478 void (*get_segment)(struct kvm_vcpu *vcpu,
479 struct kvm_segment *var, int seg);
480 void (*set_segment)(struct kvm_vcpu *vcpu,
481 struct kvm_segment *var, int seg);
6aa8b732 482 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
25c4c276 483 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
6aa8b732 484 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
6aa8b732
AK		 485 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
486 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
487 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
488 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
489 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
490 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
491 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
492 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
493 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
494 int *exception);
495 void (*cache_regs)(struct kvm_vcpu *vcpu);
496 void (*decache_regs)(struct kvm_vcpu *vcpu);
497 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
498 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
499
500 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
501 void (*tlb_flush)(struct kvm_vcpu *vcpu);
502 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
503 unsigned long addr, u32 err_code);
504
505 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
506
507 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
508 int (*vcpu_setup)(struct kvm_vcpu *vcpu);
509 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
102d8325
IM		 510 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
511 unsigned char *hypercall_addr);
6aa8b732
AK		 512};
513
6aa8b732
AK		 514extern struct kvm_arch_ops *kvm_arch_ops;
515
516#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
517#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
518
519int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
520void kvm_exit_arch(void);
521
b5a33a75
AK		 522int kvm_mmu_module_init(void);
523void kvm_mmu_module_exit(void);
524
6aa8b732 525void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
8018c27b
IM		 526int kvm_mmu_create(struct kvm_vcpu *vcpu);
527int kvm_mmu_setup(struct kvm_vcpu *vcpu);
6aa8b732
AK		 528
529int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
90cb0529
AK		 530void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
531void kvm_mmu_zap_all(struct kvm *kvm);
6aa8b732
AK		 532
533hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
534#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
535#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
536static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
537hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
039576c0 538struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732
AK		 539
540void kvm_emulator_want_group7_invlpg(void);
541
542extern hpa_t bad_page_address;
543
954bbbc2 544struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
6aa8b732
AK		 545struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
546void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
547
548enum emulation_result {
549 EMULATE_DONE, /* no further processing */
550 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
551 EMULATE_FAIL, /* can't emulate this instruction */
552};
553
554int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
555 unsigned long cr2, u16 error_code);
556void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
557void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
558void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
559 unsigned long *rflags);
560
561unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
562void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
563 unsigned long *rflags);
35f3f286
AK		 564int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
565int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
6aa8b732
AK		 566
567struct x86_emulate_ctxt;
568
039576c0
AK		 569int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
570 int size, unsigned long count, int string, int down,
571 gva_t address, int rep, unsigned port);
06465c5a 572void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
d3bef15f 573int kvm_emulate_halt(struct kvm_vcpu *vcpu);
6aa8b732
AK		 574int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
575int emulate_clts(struct kvm_vcpu *vcpu);
576int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
577 unsigned long *dest);
578int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
579 unsigned long value);
580
581void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
582void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
583void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
584void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
585void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
586
3bab1f5d
AK		 587int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
588int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
6aa8b732
AK		 589
590void fx_init(struct kvm_vcpu *vcpu);
591
592void load_msrs(struct vmx_msr_entry *e, int n);
593void save_msrs(struct vmx_msr_entry *e, int n);
594void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f
AK		 595void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
596void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 597void kvm_flush_remote_tlbs(struct kvm *kvm);
6aa8b732
AK		 598
599int kvm_read_guest(struct kvm_vcpu *vcpu,
600 gva_t addr,
601 unsigned long size,
602 void *dest);
603
604int kvm_write_guest(struct kvm_vcpu *vcpu,
605 gva_t addr,
606 unsigned long size,
607 void *data);
608
609unsigned long segment_base(u16 selector);
610
09072daf
AK		 611void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
612 const u8 *old, const u8 *new, int bytes);
a436036b 613int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
22d95b12 614void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
17c3ba9d
AK		 615int kvm_mmu_load(struct kvm_vcpu *vcpu);
616void kvm_mmu_unload(struct kvm_vcpu *vcpu);
ebeace86 617
270fd9b9
AK		 618int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
619
ebeace86
AK		 620static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
621 u32 error_code)
622{
ebeace86
AK		 623 return vcpu->mmu.page_fault(vcpu, gva, error_code);
624}
da4a00f0 625
22d95b12
AK		 626static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
627{
628 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
629 __kvm_mmu_free_some_pages(vcpu);
630}
631
17c3ba9d
AK		 632static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
633{
634 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
635 return 0;
636
637 return kvm_mmu_load(vcpu);
638}
639
a9058ecd
AK		 640static inline int is_long_mode(struct kvm_vcpu *vcpu)
641{
642#ifdef CONFIG_X86_64
643 return vcpu->shadow_efer & EFER_LME;
644#else
645 return 0;
646#endif
647}
648
6aa8b732
AK		 649static inline int is_pae(struct kvm_vcpu *vcpu)
650{
651 return vcpu->cr4 & CR4_PAE_MASK;
652}
653
654static inline int is_pse(struct kvm_vcpu *vcpu)
655{
656 return vcpu->cr4 & CR4_PSE_MASK;
657}
658
659static inline int is_paging(struct kvm_vcpu *vcpu)
660{
707d92fa 661 return vcpu->cr0 & X86_CR0_PG;
6aa8b732
AK		 662}
663
664static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
665{
666 return slot - kvm->memslots;
667}
668
669static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
670{
671 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
672
5972e953 673 return (struct kvm_mmu_page *)page_private(page);
6aa8b732
AK		 674}
675
676static inline u16 read_fs(void)
677{
678 u16 seg;
679 asm ("mov %%fs, %0" : "=g"(seg));
680 return seg;
681}
682
683static inline u16 read_gs(void)
684{
685 u16 seg;
686 asm ("mov %%gs, %0" : "=g"(seg));
687 return seg;
688}
689
690static inline u16 read_ldt(void)
691{
692 u16 ldt;
693 asm ("sldt %0" : "=g"(ldt));
694 return ldt;
695}
696
697static inline void load_fs(u16 sel)
698{
699 asm ("mov %0, %%fs" : : "rm"(sel));
700}
701
702static inline void load_gs(u16 sel)
703{
704 asm ("mov %0, %%gs" : : "rm"(sel));
705}
706
707#ifndef load_ldt
708static inline void load_ldt(u16 sel)
709{
a0610ddf 710 asm ("lldt %0" : : "rm"(sel));
6aa8b732
AK		 711}
712#endif
713
714static inline void get_idt(struct descriptor_table *table)
715{
716 asm ("sidt %0" : "=m"(*table));
717}
718
719static inline void get_gdt(struct descriptor_table *table)
720{
721 asm ("sgdt %0" : "=m"(*table));
722}
723
724static inline unsigned long read_tr_base(void)
725{
726 u16 tr;
727 asm ("str %0" : "=g"(tr));
728 return segment_base(tr);
729}
730
05b3e0c2 731#ifdef CONFIG_X86_64
6aa8b732
AK		 732static inline unsigned long read_msr(unsigned long msr)
733{
734 u64 value;
735
736 rdmsrl(msr, value);
737 return value;
738}
739#endif
740
741static inline void fx_save(void *image)
742{
743 asm ("fxsave (%0)":: "r" (image));
744}
745
746static inline void fx_restore(void *image)
747{
748 asm ("fxrstor (%0)":: "r" (image));
749}
750
751static inline void fpu_init(void)
752{
753 asm ("finit");
754}
755
756static inline u32 get_rdx_init_val(void)
757{
758 return 0x600; /* P6 family */
759}
760
761#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
762#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
763#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
764#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
765#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
766#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
767#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
768#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
769#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
770
771#define MSR_IA32_TIME_STAMP_COUNTER 0x010
772
773#define TSS_IOPB_BASE_OFFSET 0x66
774#define TSS_BASE_SIZE 0x68
775#define TSS_IOPB_SIZE (65536 / 8)
776#define TSS_REDIRECTION_SIZE (256 / 8)
777#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
778
6aa8b732 779#endif
Linux kernel - Deliverables
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