blob: 199e1e9bae25e554cc4ad6a65e885b9fc2a9382f [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>
Markus Rechberger06ff0d32007-05-27 10:46:52 +030013#include <linux/signal.h>
14#include <linux/sched.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080015#include <linux/mm.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040016#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080017
18#include "vmx.h"
19#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020020#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080021
22#define CR0_PE_MASK (1ULL << 0)
Avi Kivitya3a06362007-05-02 23:06:22 +030023#define CR0_MP_MASK (1ULL << 1)
Avi Kivity6aa8b732006-12-10 02:21:36 -080024#define CR0_TS_MASK (1ULL << 3)
25#define CR0_NE_MASK (1ULL << 5)
26#define CR0_WP_MASK (1ULL << 16)
27#define CR0_NW_MASK (1ULL << 29)
28#define CR0_CD_MASK (1ULL << 30)
29#define CR0_PG_MASK (1ULL << 31)
30
31#define CR3_WPT_MASK (1ULL << 3)
32#define CR3_PCD_MASK (1ULL << 4)
33
34#define CR3_RESEVED_BITS 0x07ULL
35#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL)
36#define CR3_FLAGS_MASK ((1ULL << 5) - 1)
37
38#define CR4_VME_MASK (1ULL << 0)
39#define CR4_PSE_MASK (1ULL << 4)
40#define CR4_PAE_MASK (1ULL << 5)
41#define CR4_PGE_MASK (1ULL << 7)
42#define CR4_VMXE_MASK (1ULL << 13)
43
44#define KVM_GUEST_CR0_MASK \
45 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \
46 | CR0_NW_MASK | CR0_CD_MASK)
47#define KVM_VM_CR0_ALWAYS_ON \
Avi Kivitya3a06362007-05-02 23:06:22 +030048 (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK | CR0_TS_MASK \
49 | CR0_MP_MASK)
Avi Kivity6aa8b732006-12-10 02:21:36 -080050#define KVM_GUEST_CR4_MASK \
51 (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
52#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
53#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK)
54
55#define INVALID_PAGE (~(hpa_t)0)
56#define UNMAPPED_GVA (~(gpa_t)0)
57
58#define KVM_MAX_VCPUS 1
Avi Kivitye8207542007-03-30 16:54:30 +030059#define KVM_ALIAS_SLOTS 4
Avi Kivity6aa8b732006-12-10 02:21:36 -080060#define KVM_MEMORY_SLOTS 4
Avi Kivity7494c0c2007-05-01 18:24:38 +030061#define KVM_NUM_MMU_PAGES 1024
Avi Kivityebeace82007-01-05 16:36:47 -080062#define KVM_MIN_FREE_MMU_PAGES 5
63#define KVM_REFILL_PAGES 25
Avi Kivity06465c52007-02-28 20:46:53 +020064#define KVM_MAX_CPUID_ENTRIES 40
Avi Kivity6aa8b732006-12-10 02:21:36 -080065
66#define FX_IMAGE_SIZE 512
67#define FX_IMAGE_ALIGN 16
68#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
69
70#define DE_VECTOR 0
Anthony Liguori7807fa62007-04-23 09:17:21 -050071#define NM_VECTOR 7
Avi Kivity6aa8b732006-12-10 02:21:36 -080072#define DF_VECTOR 8
73#define TS_VECTOR 10
74#define NP_VECTOR 11
75#define SS_VECTOR 12
76#define GP_VECTOR 13
77#define PF_VECTOR 14
78
79#define SELECTOR_TI_MASK (1 << 2)
80#define SELECTOR_RPL_MASK 0x03
81
82#define IOPL_SHIFT 12
83
Avi Kivity039576c2007-03-20 12:46:50 +020084#define KVM_PIO_PAGE_OFFSET 1
85
Avi Kivity6aa8b732006-12-10 02:21:36 -080086/*
87 * Address types:
88 *
89 * gva - guest virtual address
90 * gpa - guest physical address
91 * gfn - guest frame number
92 * hva - host virtual address
93 * hpa - host physical address
94 * hfn - host frame number
95 */
96
97typedef unsigned long gva_t;
98typedef u64 gpa_t;
99typedef unsigned long gfn_t;
100
101typedef unsigned long hva_t;
102typedef u64 hpa_t;
103typedef unsigned long hfn_t;
104
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800105#define NR_PTE_CHAIN_ENTRIES 5
106
107struct kvm_pte_chain {
108 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
109 struct hlist_node link;
110};
111
112/*
113 * kvm_mmu_page_role, below, is defined as:
114 *
115 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
116 * bits 4:7 - page table level for this shadow (1-4)
117 * bits 8:9 - page table quadrant for 2-level guests
118 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
Avi Kivityd28c6cf2007-03-23 09:55:25 +0200119 * bits 17:18 - "access" - the user and writable bits of a huge page pde
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800120 */
121union kvm_mmu_page_role {
122 unsigned word;
123 struct {
124 unsigned glevels : 4;
125 unsigned level : 4;
126 unsigned quadrant : 2;
127 unsigned pad_for_nice_hex_output : 6;
128 unsigned metaphysical : 1;
Avi Kivityd28c6cf2007-03-23 09:55:25 +0200129 unsigned hugepage_access : 2;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800130 };
131};
132
Avi Kivity6aa8b732006-12-10 02:21:36 -0800133struct kvm_mmu_page {
134 struct list_head link;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800135 struct hlist_node hash_link;
136
137 /*
138 * The following two entries are used to key the shadow page in the
139 * hash table.
140 */
141 gfn_t gfn;
142 union kvm_mmu_page_role role;
143
Avi Kivity47ad8e62007-05-06 15:50:58 +0300144 u64 *spt;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800145 unsigned long slot_bitmap; /* One bit set per slot which has memory
146 * in this shadow page.
147 */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800148 int multimapped; /* More than one parent_pte? */
Avi Kivity3bb65a22007-01-05 16:36:51 -0800149 int root_count; /* Currently serving as active root */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800150 union {
151 u64 *parent_pte; /* !multimapped */
152 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
153 };
Avi Kivity6aa8b732006-12-10 02:21:36 -0800154};
155
156struct vmcs {
157 u32 revision_id;
158 u32 abort;
159 char data[0];
160};
161
162#define vmx_msr_entry kvm_msr_entry
163
164struct kvm_vcpu;
165
166/*
167 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
168 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
169 * mode.
170 */
171struct kvm_mmu {
172 void (*new_cr3)(struct kvm_vcpu *vcpu);
173 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800174 void (*free)(struct kvm_vcpu *vcpu);
175 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
176 hpa_t root_hpa;
177 int root_level;
178 int shadow_root_level;
Avi Kivity17ac10a2007-01-05 16:36:40 -0800179
180 u64 *pae_root;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800181};
182
Avi Kivity714b93d2007-01-05 16:36:53 -0800183#define KVM_NR_MEM_OBJS 20
184
185struct kvm_mmu_memory_cache {
186 int nobjs;
187 void *objects[KVM_NR_MEM_OBJS];
188};
189
190/*
191 * We don't want allocation failures within the mmu code, so we preallocate
192 * enough memory for a single page fault in a cache.
193 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800194struct kvm_guest_debug {
195 int enabled;
196 unsigned long bp[4];
197 int singlestep;
198};
199
200enum {
201 VCPU_REGS_RAX = 0,
202 VCPU_REGS_RCX = 1,
203 VCPU_REGS_RDX = 2,
204 VCPU_REGS_RBX = 3,
205 VCPU_REGS_RSP = 4,
206 VCPU_REGS_RBP = 5,
207 VCPU_REGS_RSI = 6,
208 VCPU_REGS_RDI = 7,
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800209#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800210 VCPU_REGS_R8 = 8,
211 VCPU_REGS_R9 = 9,
212 VCPU_REGS_R10 = 10,
213 VCPU_REGS_R11 = 11,
214 VCPU_REGS_R12 = 12,
215 VCPU_REGS_R13 = 13,
216 VCPU_REGS_R14 = 14,
217 VCPU_REGS_R15 = 15,
218#endif
219 NR_VCPU_REGS
220};
221
222enum {
223 VCPU_SREG_CS,
224 VCPU_SREG_DS,
225 VCPU_SREG_ES,
226 VCPU_SREG_FS,
227 VCPU_SREG_GS,
228 VCPU_SREG_SS,
229 VCPU_SREG_TR,
230 VCPU_SREG_LDTR,
231};
232
Avi Kivity039576c2007-03-20 12:46:50 +0200233struct kvm_pio_request {
234 unsigned long count;
235 int cur_count;
236 struct page *guest_pages[2];
237 unsigned guest_page_offset;
238 int in;
239 int size;
240 int string;
241 int down;
242 int rep;
243};
244
Avi Kivity1165f5f2007-04-19 17:27:43 +0300245struct kvm_stat {
246 u32 pf_fixed;
247 u32 pf_guest;
248 u32 tlb_flush;
249 u32 invlpg;
250
251 u32 exits;
252 u32 io_exits;
253 u32 mmio_exits;
254 u32 signal_exits;
255 u32 irq_window_exits;
256 u32 halt_exits;
257 u32 request_irq_exits;
258 u32 irq_exits;
Avi Kivitye6adf282007-04-30 16:07:54 +0300259 u32 light_exits;
Eddie Dong2cc51562007-05-21 07:28:09 +0300260 u32 efer_reload;
Avi Kivity1165f5f2007-04-19 17:27:43 +0300261};
262
Avi Kivity6aa8b732006-12-10 02:21:36 -0800263struct kvm_vcpu {
264 struct kvm *kvm;
265 union {
266 struct vmcs *vmcs;
267 struct vcpu_svm *svm;
268 };
269 struct mutex mutex;
270 int cpu;
271 int launched;
Avi Kivity0cc50642007-03-25 12:07:27 +0200272 u64 host_tsc;
Avi Kivity9a2bb7f2007-02-22 12:58:31 +0200273 struct kvm_run *run;
Dor Laorc1150d82007-01-05 16:36:24 -0800274 int interrupt_window_open;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800275 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
276#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
277 unsigned long irq_pending[NR_IRQ_WORDS];
278 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
279 unsigned long rip; /* needs vcpu_load_rsp_rip() */
280
281 unsigned long cr0;
282 unsigned long cr2;
283 unsigned long cr3;
Ingo Molnar102d8322007-02-19 14:37:47 +0200284 gpa_t para_state_gpa;
285 struct page *para_state_page;
286 gpa_t hypercall_gpa;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800287 unsigned long cr4;
288 unsigned long cr8;
Avi Kivity1342d352007-01-05 16:36:39 -0800289 u64 pdptrs[4]; /* pae */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800290 u64 shadow_efer;
291 u64 apic_base;
Avi Kivity6f00e682007-01-26 00:56:40 -0800292 u64 ia32_misc_enable_msr;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800293 int nmsrs;
Eddie Donga75beee2007-05-17 18:55:15 +0300294 int save_nmsrs;
Eddie Dong2cc51562007-05-21 07:28:09 +0300295 int msr_offset_efer;
Eddie Donga75beee2007-05-17 18:55:15 +0300296#ifdef CONFIG_X86_64
297 int msr_offset_kernel_gs_base;
298#endif
Avi Kivity6aa8b732006-12-10 02:21:36 -0800299 struct vmx_msr_entry *guest_msrs;
300 struct vmx_msr_entry *host_msrs;
301
Avi Kivity6aa8b732006-12-10 02:21:36 -0800302 struct kvm_mmu mmu;
303
Avi Kivity714b93d2007-01-05 16:36:53 -0800304 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
305 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
Avi Kivityd3d25b02007-05-30 12:34:53 +0300306 struct kvm_mmu_memory_cache mmu_page_cache;
307 struct kvm_mmu_memory_cache mmu_page_header_cache;
Avi Kivity714b93d2007-01-05 16:36:53 -0800308
Avi Kivity86a5ba02007-01-05 16:36:50 -0800309 gfn_t last_pt_write_gfn;
310 int last_pt_write_count;
311
Avi Kivity6aa8b732006-12-10 02:21:36 -0800312 struct kvm_guest_debug guest_debug;
313
314 char fx_buf[FX_BUF_SIZE];
315 char *host_fx_image;
316 char *guest_fx_image;
Anthony Liguori7807fa62007-04-23 09:17:21 -0500317 int fpu_active;
Avi Kivity7702fd12007-06-14 16:27:40 +0300318 int guest_fpu_loaded;
Avi Kivity33ed6322007-05-02 16:54:03 +0300319 struct vmx_host_state {
320 int loaded;
321 u16 fs_sel, gs_sel, ldt_sel;
322 int fs_gs_ldt_reload_needed;
323 } vmx_host_state;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800324
325 int mmio_needed;
326 int mmio_read_completed;
327 int mmio_is_write;
328 int mmio_size;
329 unsigned char mmio_data[8];
330 gpa_t mmio_phys_addr;
Avi Kivitye7df56e2007-03-14 15:54:54 +0200331 gva_t mmio_fault_cr2;
Avi Kivity039576c2007-03-20 12:46:50 +0200332 struct kvm_pio_request pio;
333 void *pio_data;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800334
Avi Kivity1961d272007-03-05 19:46:05 +0200335 int sigset_active;
336 sigset_t sigset;
337
Avi Kivity1165f5f2007-04-19 17:27:43 +0300338 struct kvm_stat stat;
339
Avi Kivity6aa8b732006-12-10 02:21:36 -0800340 struct {
341 int active;
342 u8 save_iopl;
343 struct kvm_save_segment {
344 u16 selector;
345 unsigned long base;
346 u32 limit;
347 u32 ar;
348 } tr, es, ds, fs, gs;
349 } rmode;
Avi Kivity06465c52007-02-28 20:46:53 +0200350
351 int cpuid_nent;
352 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800353};
354
Avi Kivitye8207542007-03-30 16:54:30 +0300355struct kvm_mem_alias {
356 gfn_t base_gfn;
357 unsigned long npages;
358 gfn_t target_gfn;
359};
360
Avi Kivity6aa8b732006-12-10 02:21:36 -0800361struct kvm_memory_slot {
362 gfn_t base_gfn;
363 unsigned long npages;
364 unsigned long flags;
365 struct page **phys_mem;
366 unsigned long *dirty_bitmap;
367};
368
369struct kvm {
370 spinlock_t lock; /* protects everything except vcpus */
Avi Kivitye8207542007-03-30 16:54:30 +0300371 int naliases;
372 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800373 int nmemslots;
374 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800375 /*
376 * Hash table of struct kvm_mmu_page.
377 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800378 struct list_head active_mmu_pages;
Avi Kivityebeace82007-01-05 16:36:47 -0800379 int n_free_mmu_pages;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800380 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800381 struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
382 int memory_config_version;
383 int busy;
Avi Kivitycd4a4e52007-01-05 16:36:38 -0800384 unsigned long rmap_overflow;
Avi Kivity133de902007-02-12 00:54:44 -0800385 struct list_head vm_list;
Avi Kivitybccf2152007-02-21 18:04:26 +0200386 struct file *filp;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800387};
388
Avi Kivity6aa8b732006-12-10 02:21:36 -0800389struct descriptor_table {
390 u16 limit;
391 unsigned long base;
392} __attribute__((packed));
393
394struct kvm_arch_ops {
395 int (*cpu_has_kvm_support)(void); /* __init */
396 int (*disabled_by_bios)(void); /* __init */
397 void (*hardware_enable)(void *dummy); /* __init */
398 void (*hardware_disable)(void *dummy);
399 int (*hardware_setup)(void); /* __init */
400 void (*hardware_unsetup)(void); /* __exit */
401
402 int (*vcpu_create)(struct kvm_vcpu *vcpu);
403 void (*vcpu_free)(struct kvm_vcpu *vcpu);
404
Avi Kivitybccf2152007-02-21 18:04:26 +0200405 void (*vcpu_load)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800406 void (*vcpu_put)(struct kvm_vcpu *vcpu);
Avi Kivity774c47f2007-02-12 00:54:47 -0800407 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800408
409 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
410 struct kvm_debug_guest *dbg);
411 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
412 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
413 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
414 void (*get_segment)(struct kvm_vcpu *vcpu,
415 struct kvm_segment *var, int seg);
416 void (*set_segment)(struct kvm_vcpu *vcpu,
417 struct kvm_segment *var, int seg);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800418 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
Anthony Liguori25c4c272007-04-27 09:29:21 +0300419 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800420 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800421 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
422 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
423 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
424 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
425 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
426 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
427 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
428 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
429 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
430 int *exception);
431 void (*cache_regs)(struct kvm_vcpu *vcpu);
432 void (*decache_regs)(struct kvm_vcpu *vcpu);
433 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
434 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
435
436 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
437 void (*tlb_flush)(struct kvm_vcpu *vcpu);
438 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
439 unsigned long addr, u32 err_code);
440
441 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
442
443 int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
444 int (*vcpu_setup)(struct kvm_vcpu *vcpu);
445 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
Ingo Molnar102d8322007-02-19 14:37:47 +0200446 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
447 unsigned char *hypercall_addr);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800448};
449
Avi Kivity6aa8b732006-12-10 02:21:36 -0800450extern struct kvm_arch_ops *kvm_arch_ops;
451
452#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
453#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
454
455int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
456void kvm_exit_arch(void);
457
Avi Kivityb5a33a72007-04-15 16:31:09 +0300458int kvm_mmu_module_init(void);
459void kvm_mmu_module_exit(void);
460
Avi Kivity6aa8b732006-12-10 02:21:36 -0800461void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
Ingo Molnar8018c272006-12-29 16:50:01 -0800462int kvm_mmu_create(struct kvm_vcpu *vcpu);
463int kvm_mmu_setup(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800464
465int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
Avi Kivity714b93d2007-01-05 16:36:53 -0800466void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot);
Dor Laore0fa8262007-03-30 13:06:33 +0300467void kvm_mmu_zap_all(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800468
469hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
470#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
471#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
472static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
473hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity039576c2007-03-20 12:46:50 +0200474struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800475
476void kvm_emulator_want_group7_invlpg(void);
477
478extern hpa_t bad_page_address;
479
Avi Kivity954bbbc22007-03-30 14:02:32 +0300480struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800481struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
482void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
483
484enum emulation_result {
485 EMULATE_DONE, /* no further processing */
486 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
487 EMULATE_FAIL, /* can't emulate this instruction */
488};
489
490int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
491 unsigned long cr2, u16 error_code);
492void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
493void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
494void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
495 unsigned long *rflags);
496
497unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
498void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
499 unsigned long *rflags);
500
501struct x86_emulate_ctxt;
502
Avi Kivity039576c2007-03-20 12:46:50 +0200503int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
504 int size, unsigned long count, int string, int down,
505 gva_t address, int rep, unsigned port);
Avi Kivity06465c52007-02-28 20:46:53 +0200506void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800507int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
508int emulate_clts(struct kvm_vcpu *vcpu);
509int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
510 unsigned long *dest);
511int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
512 unsigned long value);
513
514void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
515void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
516void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
517void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
518void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
519
Avi Kivity3bab1f52006-12-29 16:49:48 -0800520int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
521int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800522
523void fx_init(struct kvm_vcpu *vcpu);
524
525void load_msrs(struct vmx_msr_entry *e, int n);
526void save_msrs(struct vmx_msr_entry *e, int n);
527void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300528void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
529void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800530
531int kvm_read_guest(struct kvm_vcpu *vcpu,
532 gva_t addr,
533 unsigned long size,
534 void *dest);
535
536int kvm_write_guest(struct kvm_vcpu *vcpu,
537 gva_t addr,
538 unsigned long size,
539 void *data);
540
541unsigned long segment_base(u16 selector);
542
Avi Kivity09072da2007-05-01 14:16:52 +0300543void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
544 const u8 *old, const u8 *new, int bytes);
Avi Kivitya4360362007-01-05 16:36:45 -0800545int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivityebeace82007-01-05 16:36:47 -0800546void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
547
Avi Kivity270fd9b2007-02-19 14:37:47 +0200548int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
549
Avi Kivityebeace82007-01-05 16:36:47 -0800550static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
551 u32 error_code)
552{
553 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
554 kvm_mmu_free_some_pages(vcpu);
555 return vcpu->mmu.page_fault(vcpu, gva, error_code);
556}
Avi Kivityda4a00f2007-01-05 16:36:44 -0800557
Avi Kivitya9058ec2006-12-29 16:49:37 -0800558static inline int is_long_mode(struct kvm_vcpu *vcpu)
559{
560#ifdef CONFIG_X86_64
561 return vcpu->shadow_efer & EFER_LME;
562#else
563 return 0;
564#endif
565}
566
Avi Kivity6aa8b732006-12-10 02:21:36 -0800567static inline int is_pae(struct kvm_vcpu *vcpu)
568{
569 return vcpu->cr4 & CR4_PAE_MASK;
570}
571
572static inline int is_pse(struct kvm_vcpu *vcpu)
573{
574 return vcpu->cr4 & CR4_PSE_MASK;
575}
576
577static inline int is_paging(struct kvm_vcpu *vcpu)
578{
579 return vcpu->cr0 & CR0_PG_MASK;
580}
581
582static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
583{
584 return slot - kvm->memslots;
585}
586
587static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
588{
589 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
590
Markus Rechberger5972e952007-02-19 14:37:47 +0200591 return (struct kvm_mmu_page *)page_private(page);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800592}
593
594static inline u16 read_fs(void)
595{
596 u16 seg;
597 asm ("mov %%fs, %0" : "=g"(seg));
598 return seg;
599}
600
601static inline u16 read_gs(void)
602{
603 u16 seg;
604 asm ("mov %%gs, %0" : "=g"(seg));
605 return seg;
606}
607
608static inline u16 read_ldt(void)
609{
610 u16 ldt;
611 asm ("sldt %0" : "=g"(ldt));
612 return ldt;
613}
614
615static inline void load_fs(u16 sel)
616{
617 asm ("mov %0, %%fs" : : "rm"(sel));
618}
619
620static inline void load_gs(u16 sel)
621{
622 asm ("mov %0, %%gs" : : "rm"(sel));
623}
624
625#ifndef load_ldt
626static inline void load_ldt(u16 sel)
627{
S.Caglar Onura0610dd2007-02-12 00:54:34 -0800628 asm ("lldt %0" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800629}
630#endif
631
632static inline void get_idt(struct descriptor_table *table)
633{
634 asm ("sidt %0" : "=m"(*table));
635}
636
637static inline void get_gdt(struct descriptor_table *table)
638{
639 asm ("sgdt %0" : "=m"(*table));
640}
641
642static inline unsigned long read_tr_base(void)
643{
644 u16 tr;
645 asm ("str %0" : "=g"(tr));
646 return segment_base(tr);
647}
648
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800649#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800650static inline unsigned long read_msr(unsigned long msr)
651{
652 u64 value;
653
654 rdmsrl(msr, value);
655 return value;
656}
657#endif
658
659static inline void fx_save(void *image)
660{
661 asm ("fxsave (%0)":: "r" (image));
662}
663
664static inline void fx_restore(void *image)
665{
666 asm ("fxrstor (%0)":: "r" (image));
667}
668
669static inline void fpu_init(void)
670{
671 asm ("finit");
672}
673
674static inline u32 get_rdx_init_val(void)
675{
676 return 0x600; /* P6 family */
677}
678
679#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
680#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
681#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
682#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
683#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
684#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
685#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
686#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
687#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
688
689#define MSR_IA32_TIME_STAMP_COUNTER 0x010
690
691#define TSS_IOPB_BASE_OFFSET 0x66
692#define TSS_BASE_SIZE 0x68
693#define TSS_IOPB_SIZE (65536 / 8)
694#define TSS_REDIRECTION_SIZE (256 / 8)
695#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
696
Avi Kivity6aa8b732006-12-10 02:21:36 -0800697#endif