blob: 6d0bd7aab92e815390c2b009fd669c7bc287d2e6 [file] [log] [blame]
Avi Kivity6aa8b732006-12-10 02:21:36 -08001#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>
13#include <linux/mm.h>
14
15#include "vmx.h"
16#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020017#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080018
19#define CR0_PE_MASK (1ULL << 0)
20#define CR0_TS_MASK (1ULL << 3)
21#define CR0_NE_MASK (1ULL << 5)
22#define CR0_WP_MASK (1ULL << 16)
23#define CR0_NW_MASK (1ULL << 29)
24#define CR0_CD_MASK (1ULL << 30)
25#define CR0_PG_MASK (1ULL << 31)
26
27#define CR3_WPT_MASK (1ULL << 3)
28#define CR3_PCD_MASK (1ULL << 4)
29
30#define CR3_RESEVED_BITS 0x07ULL
31#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL)
32#define CR3_FLAGS_MASK ((1ULL << 5) - 1)
33
34#define CR4_VME_MASK (1ULL << 0)
35#define CR4_PSE_MASK (1ULL << 4)
36#define CR4_PAE_MASK (1ULL << 5)
37#define CR4_PGE_MASK (1ULL << 7)
38#define CR4_VMXE_MASK (1ULL << 13)
39
40#define KVM_GUEST_CR0_MASK \
41 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \
42 | CR0_NW_MASK | CR0_CD_MASK)
43#define KVM_VM_CR0_ALWAYS_ON \
44 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK)
45#define KVM_GUEST_CR4_MASK \
46 (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
47#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
48#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK)
49
50#define INVALID_PAGE (~(hpa_t)0)
51#define UNMAPPED_GVA (~(gpa_t)0)
52
53#define KVM_MAX_VCPUS 1
54#define KVM_MEMORY_SLOTS 4
55#define KVM_NUM_MMU_PAGES 256
Avi Kivityebeace82007-01-05 16:36:47 -080056#define KVM_MIN_FREE_MMU_PAGES 5
57#define KVM_REFILL_PAGES 25
Avi Kivity06465c52007-02-28 20:46:53 +020058#define KVM_MAX_CPUID_ENTRIES 40
Avi Kivity6aa8b732006-12-10 02:21:36 -080059
60#define FX_IMAGE_SIZE 512
61#define FX_IMAGE_ALIGN 16
62#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
63
64#define DE_VECTOR 0
65#define DF_VECTOR 8
66#define TS_VECTOR 10
67#define NP_VECTOR 11
68#define SS_VECTOR 12
69#define GP_VECTOR 13
70#define PF_VECTOR 14
71
72#define SELECTOR_TI_MASK (1 << 2)
73#define SELECTOR_RPL_MASK 0x03
74
75#define IOPL_SHIFT 12
76
Avi Kivity039576c2007-03-20 12:46:50 +020077#define KVM_PIO_PAGE_OFFSET 1
78
Avi Kivity6aa8b732006-12-10 02:21:36 -080079/*
80 * Address types:
81 *
82 * gva - guest virtual address
83 * gpa - guest physical address
84 * gfn - guest frame number
85 * hva - host virtual address
86 * hpa - host physical address
87 * hfn - host frame number
88 */
89
90typedef unsigned long gva_t;
91typedef u64 gpa_t;
92typedef unsigned long gfn_t;
93
94typedef unsigned long hva_t;
95typedef u64 hpa_t;
96typedef unsigned long hfn_t;
97
Avi Kivitycea0f0e2007-01-05 16:36:43 -080098#define NR_PTE_CHAIN_ENTRIES 5
99
100struct kvm_pte_chain {
101 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
102 struct hlist_node link;
103};
104
105/*
106 * kvm_mmu_page_role, below, is defined as:
107 *
108 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
109 * bits 4:7 - page table level for this shadow (1-4)
110 * bits 8:9 - page table quadrant for 2-level guests
111 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
Avi Kivityd28c6cfb2007-03-23 09:55:25 +0200112 * bits 17:18 - "access" - the user and writable bits of a huge page pde
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800113 */
114union kvm_mmu_page_role {
115 unsigned word;
116 struct {
117 unsigned glevels : 4;
118 unsigned level : 4;
119 unsigned quadrant : 2;
120 unsigned pad_for_nice_hex_output : 6;
121 unsigned metaphysical : 1;
Avi Kivityd28c6cfb2007-03-23 09:55:25 +0200122 unsigned hugepage_access : 2;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800123 };
124};
125
Avi Kivity6aa8b732006-12-10 02:21:36 -0800126struct kvm_mmu_page {
127 struct list_head link;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800128 struct hlist_node hash_link;
129
130 /*
131 * The following two entries are used to key the shadow page in the
132 * hash table.
133 */
134 gfn_t gfn;
135 union kvm_mmu_page_role role;
136
Avi Kivity6aa8b732006-12-10 02:21:36 -0800137 hpa_t page_hpa;
138 unsigned long slot_bitmap; /* One bit set per slot which has memory
139 * in this shadow page.
140 */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800141 int multimapped; /* More than one parent_pte? */
Avi Kivity3bb65a22007-01-05 16:36:51 -0800142 int root_count; /* Currently serving as active root */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800143 union {
144 u64 *parent_pte; /* !multimapped */
145 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
146 };
Avi Kivity6aa8b732006-12-10 02:21:36 -0800147};
148
149struct vmcs {
150 u32 revision_id;
151 u32 abort;
152 char data[0];
153};
154
155#define vmx_msr_entry kvm_msr_entry
156
157struct kvm_vcpu;
158
159/*
160 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
161 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
162 * mode.
163 */
164struct kvm_mmu {
165 void (*new_cr3)(struct kvm_vcpu *vcpu);
166 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800167 void (*free)(struct kvm_vcpu *vcpu);
168 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
169 hpa_t root_hpa;
170 int root_level;
171 int shadow_root_level;
Avi Kivity17ac10a2007-01-05 16:36:40 -0800172
173 u64 *pae_root;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800174};
175
Avi Kivity714b93d2007-01-05 16:36:53 -0800176#define KVM_NR_MEM_OBJS 20
177
178struct kvm_mmu_memory_cache {
179 int nobjs;
180 void *objects[KVM_NR_MEM_OBJS];
181};
182
183/*
184 * We don't want allocation failures within the mmu code, so we preallocate
185 * enough memory for a single page fault in a cache.
186 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800187struct kvm_guest_debug {
188 int enabled;
189 unsigned long bp[4];
190 int singlestep;
191};
192
193enum {
194 VCPU_REGS_RAX = 0,
195 VCPU_REGS_RCX = 1,
196 VCPU_REGS_RDX = 2,
197 VCPU_REGS_RBX = 3,
198 VCPU_REGS_RSP = 4,
199 VCPU_REGS_RBP = 5,
200 VCPU_REGS_RSI = 6,
201 VCPU_REGS_RDI = 7,
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800202#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800203 VCPU_REGS_R8 = 8,
204 VCPU_REGS_R9 = 9,
205 VCPU_REGS_R10 = 10,
206 VCPU_REGS_R11 = 11,
207 VCPU_REGS_R12 = 12,
208 VCPU_REGS_R13 = 13,
209 VCPU_REGS_R14 = 14,
210 VCPU_REGS_R15 = 15,
211#endif
212 NR_VCPU_REGS
213};
214
215enum {
216 VCPU_SREG_CS,
217 VCPU_SREG_DS,
218 VCPU_SREG_ES,
219 VCPU_SREG_FS,
220 VCPU_SREG_GS,
221 VCPU_SREG_SS,
222 VCPU_SREG_TR,
223 VCPU_SREG_LDTR,
224};
225
Avi Kivity039576c2007-03-20 12:46:50 +0200226struct kvm_pio_request {
227 unsigned long count;
228 int cur_count;
229 struct page *guest_pages[2];
230 unsigned guest_page_offset;
231 int in;
232 int size;
233 int string;
234 int down;
235 int rep;
236};
237
Avi Kivity6aa8b732006-12-10 02:21:36 -0800238struct kvm_vcpu {
239 struct kvm *kvm;
240 union {
241 struct vmcs *vmcs;
242 struct vcpu_svm *svm;
243 };
244 struct mutex mutex;
245 int cpu;
246 int launched;
Avi Kivity0cc50642007-03-25 12:07:27 +0200247 u64 host_tsc;
Avi Kivity9a2bb7f2007-02-22 12:58:31 +0200248 struct kvm_run *run;
Dor Laorc1150d82007-01-05 16:36:24 -0800249 int interrupt_window_open;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800250 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
251#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
252 unsigned long irq_pending[NR_IRQ_WORDS];
253 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
254 unsigned long rip; /* needs vcpu_load_rsp_rip() */
255
256 unsigned long cr0;
257 unsigned long cr2;
258 unsigned long cr3;
Ingo Molnar102d8322007-02-19 14:37:47 +0200259 gpa_t para_state_gpa;
260 struct page *para_state_page;
261 gpa_t hypercall_gpa;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800262 unsigned long cr4;
263 unsigned long cr8;
Avi Kivity1342d352007-01-05 16:36:39 -0800264 u64 pdptrs[4]; /* pae */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800265 u64 shadow_efer;
266 u64 apic_base;
Avi Kivity6f00e682007-01-26 00:56:40 -0800267 u64 ia32_misc_enable_msr;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800268 int nmsrs;
269 struct vmx_msr_entry *guest_msrs;
270 struct vmx_msr_entry *host_msrs;
271
272 struct list_head free_pages;
273 struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES];
274 struct kvm_mmu mmu;
275
Avi Kivity714b93d2007-01-05 16:36:53 -0800276 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
277 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
278
Avi Kivity86a5ba02007-01-05 16:36:50 -0800279 gfn_t last_pt_write_gfn;
280 int last_pt_write_count;
281
Avi Kivity6aa8b732006-12-10 02:21:36 -0800282 struct kvm_guest_debug guest_debug;
283
284 char fx_buf[FX_BUF_SIZE];
285 char *host_fx_image;
286 char *guest_fx_image;
287
288 int mmio_needed;
289 int mmio_read_completed;
290 int mmio_is_write;
291 int mmio_size;
292 unsigned char mmio_data[8];
293 gpa_t mmio_phys_addr;
Avi Kivity039576c2007-03-20 12:46:50 +0200294 struct kvm_pio_request pio;
295 void *pio_data;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800296
Avi Kivity1961d272007-03-05 19:46:05 +0200297 int sigset_active;
298 sigset_t sigset;
299
Avi Kivity6aa8b732006-12-10 02:21:36 -0800300 struct {
301 int active;
302 u8 save_iopl;
303 struct kvm_save_segment {
304 u16 selector;
305 unsigned long base;
306 u32 limit;
307 u32 ar;
308 } tr, es, ds, fs, gs;
309 } rmode;
Avi Kivity06465c52007-02-28 20:46:53 +0200310
311 int cpuid_nent;
312 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800313};
314
315struct kvm_memory_slot {
316 gfn_t base_gfn;
317 unsigned long npages;
318 unsigned long flags;
319 struct page **phys_mem;
320 unsigned long *dirty_bitmap;
321};
322
323struct kvm {
324 spinlock_t lock; /* protects everything except vcpus */
325 int nmemslots;
326 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800327 /*
328 * Hash table of struct kvm_mmu_page.
329 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800330 struct list_head active_mmu_pages;
Avi Kivityebeace82007-01-05 16:36:47 -0800331 int n_free_mmu_pages;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800332 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800333 struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
334 int memory_config_version;
335 int busy;
Avi Kivitycd4a4e52007-01-05 16:36:38 -0800336 unsigned long rmap_overflow;
Avi Kivity133de902007-02-12 00:54:44 -0800337 struct list_head vm_list;
Avi Kivitybccf2152007-02-21 18:04:26 +0200338 struct file *filp;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800339};
340
341struct kvm_stat {
342 u32 pf_fixed;
343 u32 pf_guest;
344 u32 tlb_flush;
345 u32 invlpg;
346
347 u32 exits;
348 u32 io_exits;
349 u32 mmio_exits;
350 u32 signal_exits;
Dor Laorc1150d82007-01-05 16:36:24 -0800351 u32 irq_window_exits;
352 u32 halt_exits;
353 u32 request_irq_exits;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800354 u32 irq_exits;
355};
356
357struct descriptor_table {
358 u16 limit;
359 unsigned long base;
360} __attribute__((packed));
361
362struct kvm_arch_ops {
363 int (*cpu_has_kvm_support)(void); /* __init */
364 int (*disabled_by_bios)(void); /* __init */
365 void (*hardware_enable)(void *dummy); /* __init */
366 void (*hardware_disable)(void *dummy);
367 int (*hardware_setup)(void); /* __init */
368 void (*hardware_unsetup)(void); /* __exit */
369
370 int (*vcpu_create)(struct kvm_vcpu *vcpu);
371 void (*vcpu_free)(struct kvm_vcpu *vcpu);
372
Avi Kivitybccf2152007-02-21 18:04:26 +0200373 void (*vcpu_load)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800374 void (*vcpu_put)(struct kvm_vcpu *vcpu);
Avi Kivity774c47f2007-02-12 00:54:47 -0800375 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800376
377 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
378 struct kvm_debug_guest *dbg);
379 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
380 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
381 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
382 void (*get_segment)(struct kvm_vcpu *vcpu,
383 struct kvm_segment *var, int seg);
384 void (*set_segment)(struct kvm_vcpu *vcpu,
385 struct kvm_segment *var, int seg);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800386 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
Avi Kivity399badf2007-01-05 16:36:38 -0800387 void (*decache_cr0_cr4_guest_bits)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800388 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800389 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
390 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
391 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
392 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
393 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
394 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
395 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
396 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
397 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
398 int *exception);
399 void (*cache_regs)(struct kvm_vcpu *vcpu);
400 void (*decache_regs)(struct kvm_vcpu *vcpu);
401 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
402 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
403
404 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
405 void (*tlb_flush)(struct kvm_vcpu *vcpu);
406 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
407 unsigned long addr, u32 err_code);
408
409 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
410
411 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
412 int (*vcpu_setup)(struct kvm_vcpu *vcpu);
413 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
Ingo Molnar102d8322007-02-19 14:37:47 +0200414 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
415 unsigned char *hypercall_addr);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800416};
417
418extern struct kvm_stat kvm_stat;
419extern struct kvm_arch_ops *kvm_arch_ops;
420
421#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
422#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
423
424int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
425void kvm_exit_arch(void);
426
427void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
Ingo Molnar8018c272006-12-29 16:50:01 -0800428int kvm_mmu_create(struct kvm_vcpu *vcpu);
429int kvm_mmu_setup(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800430
431int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
Avi Kivity714b93d2007-01-05 16:36:53 -0800432void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800433
434hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
435#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
436#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
437static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
438hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity039576c2007-03-20 12:46:50 +0200439struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800440
441void kvm_emulator_want_group7_invlpg(void);
442
443extern hpa_t bad_page_address;
444
445static inline struct page *gfn_to_page(struct kvm_memory_slot *slot, gfn_t gfn)
446{
447 return slot->phys_mem[gfn - slot->base_gfn];
448}
449
450struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
451void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
452
453enum emulation_result {
454 EMULATE_DONE, /* no further processing */
455 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
456 EMULATE_FAIL, /* can't emulate this instruction */
457};
458
459int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
460 unsigned long cr2, u16 error_code);
461void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
462void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
463void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
464 unsigned long *rflags);
465
466unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
467void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
468 unsigned long *rflags);
469
470struct x86_emulate_ctxt;
471
Avi Kivity039576c2007-03-20 12:46:50 +0200472int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
473 int size, unsigned long count, int string, int down,
474 gva_t address, int rep, unsigned port);
Avi Kivity06465c52007-02-28 20:46:53 +0200475void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800476int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
477int emulate_clts(struct kvm_vcpu *vcpu);
478int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
479 unsigned long *dest);
480int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
481 unsigned long value);
482
483void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
484void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
485void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
486void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
487void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
488
Avi Kivity3bab1f52006-12-29 16:49:48 -0800489int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
490int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800491
492void fx_init(struct kvm_vcpu *vcpu);
493
494void load_msrs(struct vmx_msr_entry *e, int n);
495void save_msrs(struct vmx_msr_entry *e, int n);
496void kvm_resched(struct kvm_vcpu *vcpu);
497
498int kvm_read_guest(struct kvm_vcpu *vcpu,
499 gva_t addr,
500 unsigned long size,
501 void *dest);
502
503int kvm_write_guest(struct kvm_vcpu *vcpu,
504 gva_t addr,
505 unsigned long size,
506 void *data);
507
508unsigned long segment_base(u16 selector);
509
Avi Kivityda4a00f2007-01-05 16:36:44 -0800510void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
511void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
Avi Kivitya4360362007-01-05 16:36:45 -0800512int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivityebeace82007-01-05 16:36:47 -0800513void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
514
Avi Kivity270fd9b2007-02-19 14:37:47 +0200515int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
516
Avi Kivityebeace82007-01-05 16:36:47 -0800517static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
518 u32 error_code)
519{
520 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
521 kvm_mmu_free_some_pages(vcpu);
522 return vcpu->mmu.page_fault(vcpu, gva, error_code);
523}
Avi Kivityda4a00f2007-01-05 16:36:44 -0800524
Avi Kivity6aa8b732006-12-10 02:21:36 -0800525static inline struct page *_gfn_to_page(struct kvm *kvm, gfn_t gfn)
526{
527 struct kvm_memory_slot *slot = gfn_to_memslot(kvm, gfn);
528 return (slot) ? slot->phys_mem[gfn - slot->base_gfn] : NULL;
529}
530
Avi Kivitya9058ec2006-12-29 16:49:37 -0800531static inline int is_long_mode(struct kvm_vcpu *vcpu)
532{
533#ifdef CONFIG_X86_64
534 return vcpu->shadow_efer & EFER_LME;
535#else
536 return 0;
537#endif
538}
539
Avi Kivity6aa8b732006-12-10 02:21:36 -0800540static inline int is_pae(struct kvm_vcpu *vcpu)
541{
542 return vcpu->cr4 & CR4_PAE_MASK;
543}
544
545static inline int is_pse(struct kvm_vcpu *vcpu)
546{
547 return vcpu->cr4 & CR4_PSE_MASK;
548}
549
550static inline int is_paging(struct kvm_vcpu *vcpu)
551{
552 return vcpu->cr0 & CR0_PG_MASK;
553}
554
555static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
556{
557 return slot - kvm->memslots;
558}
559
560static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
561{
562 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
563
Markus Rechberger5972e952007-02-19 14:37:47 +0200564 return (struct kvm_mmu_page *)page_private(page);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800565}
566
567static inline u16 read_fs(void)
568{
569 u16 seg;
570 asm ("mov %%fs, %0" : "=g"(seg));
571 return seg;
572}
573
574static inline u16 read_gs(void)
575{
576 u16 seg;
577 asm ("mov %%gs, %0" : "=g"(seg));
578 return seg;
579}
580
581static inline u16 read_ldt(void)
582{
583 u16 ldt;
584 asm ("sldt %0" : "=g"(ldt));
585 return ldt;
586}
587
588static inline void load_fs(u16 sel)
589{
590 asm ("mov %0, %%fs" : : "rm"(sel));
591}
592
593static inline void load_gs(u16 sel)
594{
595 asm ("mov %0, %%gs" : : "rm"(sel));
596}
597
598#ifndef load_ldt
599static inline void load_ldt(u16 sel)
600{
S.Caglar Onura0610dd2007-02-12 00:54:34 -0800601 asm ("lldt %0" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800602}
603#endif
604
605static inline void get_idt(struct descriptor_table *table)
606{
607 asm ("sidt %0" : "=m"(*table));
608}
609
610static inline void get_gdt(struct descriptor_table *table)
611{
612 asm ("sgdt %0" : "=m"(*table));
613}
614
615static inline unsigned long read_tr_base(void)
616{
617 u16 tr;
618 asm ("str %0" : "=g"(tr));
619 return segment_base(tr);
620}
621
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800622#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800623static inline unsigned long read_msr(unsigned long msr)
624{
625 u64 value;
626
627 rdmsrl(msr, value);
628 return value;
629}
630#endif
631
632static inline void fx_save(void *image)
633{
634 asm ("fxsave (%0)":: "r" (image));
635}
636
637static inline void fx_restore(void *image)
638{
639 asm ("fxrstor (%0)":: "r" (image));
640}
641
642static inline void fpu_init(void)
643{
644 asm ("finit");
645}
646
647static inline u32 get_rdx_init_val(void)
648{
649 return 0x600; /* P6 family */
650}
651
652#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
653#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
654#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
655#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
656#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
657#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
658#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
659#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
660#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
661
662#define MSR_IA32_TIME_STAMP_COUNTER 0x010
663
664#define TSS_IOPB_BASE_OFFSET 0x66
665#define TSS_BASE_SIZE 0x68
666#define TSS_IOPB_SIZE (65536 / 8)
667#define TSS_REDIRECTION_SIZE (256 / 8)
668#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
669
Avi Kivity6aa8b732006-12-10 02:21:36 -0800670#endif