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Carsten Otte043405e2007-10-10 17:16:19 +02001#/*
2 * Kernel-based Virtual Machine driver for Linux
3 *
4 * This header defines architecture specific interfaces, x86 version
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
8 *
9 */
10
Avi Kivityedf88412007-12-16 11:02:48 +020011#ifndef ASM_KVM_HOST_H
12#define ASM_KVM_HOST_H
Carsten Otte043405e2007-10-10 17:16:19 +020013
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080014#include <linux/types.h>
15#include <linux/mm.h>
16
17#include <linux/kvm.h>
18#include <linux/kvm_para.h>
Avi Kivityedf88412007-12-16 11:02:48 +020019#include <linux/kvm_types.h>
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080020
Hollis Blancharde01a1b52007-12-03 15:30:25 -060021#include <asm/desc.h>
22
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080023#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
24#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
25#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
26
27#define KVM_GUEST_CR0_MASK \
28 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
29 | X86_CR0_NW | X86_CR0_CD)
30#define KVM_VM_CR0_ALWAYS_ON \
31 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
32 | X86_CR0_MP)
33#define KVM_GUEST_CR4_MASK \
34 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
35#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
36#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
37
38#define INVALID_PAGE (~(hpa_t)0)
39#define UNMAPPED_GVA (~(gpa_t)0)
40
41#define DE_VECTOR 0
42#define UD_VECTOR 6
43#define NM_VECTOR 7
44#define DF_VECTOR 8
45#define TS_VECTOR 10
46#define NP_VECTOR 11
47#define SS_VECTOR 12
48#define GP_VECTOR 13
49#define PF_VECTOR 14
50
51#define SELECTOR_TI_MASK (1 << 2)
52#define SELECTOR_RPL_MASK 0x03
53
54#define IOPL_SHIFT 12
55
Zhang Xiantaod69fb812007-12-14 09:54:20 +080056#define KVM_ALIAS_SLOTS 4
57
Zhang Xiantaod657a982007-12-14 09:41:22 +080058#define KVM_PERMILLE_MMU_PAGES 20
59#define KVM_MIN_ALLOC_MMU_PAGES 64
60#define KVM_NUM_MMU_PAGES 1024
61#define KVM_MIN_FREE_MMU_PAGES 5
62#define KVM_REFILL_PAGES 25
63#define KVM_MAX_CPUID_ENTRIES 40
64
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +080065extern spinlock_t kvm_lock;
66extern struct list_head vm_list;
67
Zhang Xiantaod657a982007-12-14 09:41:22 +080068struct kvm_vcpu;
69struct kvm;
70
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +080071enum {
72 VCPU_REGS_RAX = 0,
73 VCPU_REGS_RCX = 1,
74 VCPU_REGS_RDX = 2,
75 VCPU_REGS_RBX = 3,
76 VCPU_REGS_RSP = 4,
77 VCPU_REGS_RBP = 5,
78 VCPU_REGS_RSI = 6,
79 VCPU_REGS_RDI = 7,
80#ifdef CONFIG_X86_64
81 VCPU_REGS_R8 = 8,
82 VCPU_REGS_R9 = 9,
83 VCPU_REGS_R10 = 10,
84 VCPU_REGS_R11 = 11,
85 VCPU_REGS_R12 = 12,
86 VCPU_REGS_R13 = 13,
87 VCPU_REGS_R14 = 14,
88 VCPU_REGS_R15 = 15,
89#endif
90 NR_VCPU_REGS
91};
92
93enum {
94 VCPU_SREG_CS,
95 VCPU_SREG_DS,
96 VCPU_SREG_ES,
97 VCPU_SREG_FS,
98 VCPU_SREG_GS,
99 VCPU_SREG_SS,
100 VCPU_SREG_TR,
101 VCPU_SREG_LDTR,
102};
103
Avi Kivityedf88412007-12-16 11:02:48 +0200104#include <asm/kvm_x86_emulate.h>
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800105
Zhang Xiantaod657a982007-12-14 09:41:22 +0800106#define KVM_NR_MEM_OBJS 40
107
108/*
109 * We don't want allocation failures within the mmu code, so we preallocate
110 * enough memory for a single page fault in a cache.
111 */
112struct kvm_mmu_memory_cache {
113 int nobjs;
114 void *objects[KVM_NR_MEM_OBJS];
115};
116
117#define NR_PTE_CHAIN_ENTRIES 5
118
119struct kvm_pte_chain {
120 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
121 struct hlist_node link;
122};
123
124/*
125 * kvm_mmu_page_role, below, is defined as:
126 *
127 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
128 * bits 4:7 - page table level for this shadow (1-4)
129 * bits 8:9 - page table quadrant for 2-level guests
130 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
131 * bits 17:19 - common access permissions for all ptes in this shadow page
132 */
133union kvm_mmu_page_role {
134 unsigned word;
135 struct {
136 unsigned glevels : 4;
137 unsigned level : 4;
138 unsigned quadrant : 2;
139 unsigned pad_for_nice_hex_output : 6;
140 unsigned metaphysical : 1;
141 unsigned access : 3;
142 };
143};
144
145struct kvm_mmu_page {
146 struct list_head link;
147 struct hlist_node hash_link;
148
149 /*
150 * The following two entries are used to key the shadow page in the
151 * hash table.
152 */
153 gfn_t gfn;
154 union kvm_mmu_page_role role;
155
156 u64 *spt;
157 /* hold the gfn of each spte inside spt */
158 gfn_t *gfns;
159 unsigned long slot_bitmap; /* One bit set per slot which has memory
160 * in this shadow page.
161 */
162 int multimapped; /* More than one parent_pte? */
163 int root_count; /* Currently serving as active root */
164 union {
165 u64 *parent_pte; /* !multimapped */
166 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
167 };
168};
169
170/*
171 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
172 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
173 * mode.
174 */
175struct kvm_mmu {
176 void (*new_cr3)(struct kvm_vcpu *vcpu);
177 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
178 void (*free)(struct kvm_vcpu *vcpu);
179 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
180 void (*prefetch_page)(struct kvm_vcpu *vcpu,
181 struct kvm_mmu_page *page);
182 hpa_t root_hpa;
183 int root_level;
184 int shadow_root_level;
185
186 u64 *pae_root;
187};
188
Zhang Xiantaoad312c72007-12-13 23:50:52 +0800189struct kvm_vcpu_arch {
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800190 u64 host_tsc;
191 int interrupt_window_open;
192 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
193 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
194 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
195 unsigned long rip; /* needs vcpu_load_rsp_rip() */
196
197 unsigned long cr0;
198 unsigned long cr2;
199 unsigned long cr3;
200 unsigned long cr4;
201 unsigned long cr8;
202 u64 pdptrs[4]; /* pae */
203 u64 shadow_efer;
204 u64 apic_base;
205 struct kvm_lapic *apic; /* kernel irqchip context */
206#define VCPU_MP_STATE_RUNNABLE 0
207#define VCPU_MP_STATE_UNINITIALIZED 1
208#define VCPU_MP_STATE_INIT_RECEIVED 2
209#define VCPU_MP_STATE_SIPI_RECEIVED 3
210#define VCPU_MP_STATE_HALTED 4
211 int mp_state;
212 int sipi_vector;
213 u64 ia32_misc_enable_msr;
Avi Kivityb209749f2007-10-22 16:50:39 +0200214 bool tpr_access_reporting;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800215
216 struct kvm_mmu mmu;
217
218 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
219 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
220 struct kvm_mmu_memory_cache mmu_page_cache;
221 struct kvm_mmu_memory_cache mmu_page_header_cache;
222
223 gfn_t last_pt_write_gfn;
224 int last_pt_write_count;
225 u64 *last_pte_updated;
226
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800227 struct i387_fxsave_struct host_fx_image;
228 struct i387_fxsave_struct guest_fx_image;
229
230 gva_t mmio_fault_cr2;
231 struct kvm_pio_request pio;
232 void *pio_data;
233
Avi Kivity298101d2007-11-25 13:41:11 +0200234 struct kvm_queued_exception {
235 bool pending;
236 bool has_error_code;
237 u8 nr;
238 u32 error_code;
239 } exception;
240
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800241 struct {
242 int active;
243 u8 save_iopl;
244 struct kvm_save_segment {
245 u16 selector;
246 unsigned long base;
247 u32 limit;
248 u32 ar;
249 } tr, es, ds, fs, gs;
250 } rmode;
251 int halt_request; /* real mode on Intel only */
252
253 int cpuid_nent;
Dan Kenigsberg07716712007-11-21 17:10:04 +0200254 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800255 /* emulate context */
256
257 struct x86_emulate_ctxt emulate_ctxt;
258};
259
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800260struct kvm_mem_alias {
261 gfn_t base_gfn;
262 unsigned long npages;
263 gfn_t target_gfn;
264};
265
266struct kvm_arch{
267 int naliases;
268 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
Zhang Xiantaof05e70a2007-12-14 10:01:48 +0800269
270 unsigned int n_free_mmu_pages;
271 unsigned int n_requested_mmu_pages;
272 unsigned int n_alloc_mmu_pages;
273 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
274 /*
275 * Hash table of struct kvm_mmu_page.
276 */
277 struct list_head active_mmu_pages;
Zhang Xiantaod7deeeb02007-12-14 10:17:34 +0800278 struct kvm_pic *vpic;
279 struct kvm_ioapic *vioapic;
Zhang Xiantaobfc6d222007-12-14 10:20:16 +0800280
281 int round_robin_prev_vcpu;
282 unsigned int tss_addr;
283 struct page *apic_access_page;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800284};
285
Zhang Xiantao07114562007-12-14 10:23:23 +0800286struct kvm_vm_stat {
287 u32 mmu_shadow_zapped;
288 u32 mmu_pte_write;
289 u32 mmu_pte_updated;
290 u32 mmu_pde_zapped;
291 u32 mmu_flooded;
292 u32 mmu_recycled;
Avi Kivitydfc5aa02007-12-18 19:47:18 +0200293 u32 mmu_cache_miss;
Zhang Xiantao07114562007-12-14 10:23:23 +0800294 u32 remote_tlb_flush;
295};
296
Zhang Xiantao77b4c252007-12-14 09:49:26 +0800297struct kvm_vcpu_stat {
298 u32 pf_fixed;
299 u32 pf_guest;
300 u32 tlb_flush;
301 u32 invlpg;
302
303 u32 exits;
304 u32 io_exits;
305 u32 mmio_exits;
306 u32 signal_exits;
307 u32 irq_window_exits;
308 u32 halt_exits;
309 u32 halt_wakeup;
310 u32 request_irq_exits;
311 u32 irq_exits;
312 u32 host_state_reload;
313 u32 efer_reload;
314 u32 fpu_reload;
315 u32 insn_emulation;
316 u32 insn_emulation_fail;
317};
Zhang Xiantaoad312c72007-12-13 23:50:52 +0800318
Hollis Blancharde01a1b52007-12-03 15:30:25 -0600319struct descriptor_table {
320 u16 limit;
321 unsigned long base;
322} __attribute__((packed));
323
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800324struct kvm_x86_ops {
325 int (*cpu_has_kvm_support)(void); /* __init */
326 int (*disabled_by_bios)(void); /* __init */
327 void (*hardware_enable)(void *dummy); /* __init */
328 void (*hardware_disable)(void *dummy);
329 void (*check_processor_compatibility)(void *rtn);
330 int (*hardware_setup)(void); /* __init */
331 void (*hardware_unsetup)(void); /* __exit */
Avi Kivity774ead32007-12-26 13:57:04 +0200332 bool (*cpu_has_accelerated_tpr)(void);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800333
334 /* Create, but do not attach this VCPU */
335 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
336 void (*vcpu_free)(struct kvm_vcpu *vcpu);
337 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
338
339 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
340 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
341 void (*vcpu_put)(struct kvm_vcpu *vcpu);
342 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
343
344 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
345 struct kvm_debug_guest *dbg);
346 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
347 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
348 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
349 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
350 void (*get_segment)(struct kvm_vcpu *vcpu,
351 struct kvm_segment *var, int seg);
352 void (*set_segment)(struct kvm_vcpu *vcpu,
353 struct kvm_segment *var, int seg);
354 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
355 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
356 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
357 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
358 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
359 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
360 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
361 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
362 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
363 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
364 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
365 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
366 int *exception);
367 void (*cache_regs)(struct kvm_vcpu *vcpu);
368 void (*decache_regs)(struct kvm_vcpu *vcpu);
369 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
370 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
371
372 void (*tlb_flush)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800373
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800374 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
375 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
376 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
377 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
378 unsigned char *hypercall_addr);
379 int (*get_irq)(struct kvm_vcpu *vcpu);
380 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
Avi Kivity298101d2007-11-25 13:41:11 +0200381 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
382 bool has_error_code, u32 error_code);
383 bool (*exception_injected)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800384 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
385 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
386 struct kvm_run *run);
387
388 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
389};
390
Zhang Xiantao97896d02007-11-14 20:09:30 +0800391extern struct kvm_x86_ops *kvm_x86_ops;
392
Zhang Xiantao54f15852007-11-19 15:24:28 +0800393int kvm_mmu_module_init(void);
394void kvm_mmu_module_exit(void);
395
396void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
397int kvm_mmu_create(struct kvm_vcpu *vcpu);
398int kvm_mmu_setup(struct kvm_vcpu *vcpu);
399void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
400
401int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
402void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
403void kvm_mmu_zap_all(struct kvm *kvm);
Zhang Xiantao3ad82a72007-11-20 13:11:38 +0800404unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800405void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
406
407enum emulation_result {
408 EMULATE_DONE, /* no further processing */
409 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
410 EMULATE_FAIL, /* can't emulate this instruction */
411};
412
413int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
414 unsigned long cr2, u16 error_code, int no_decode);
415void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
416void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
417void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
418void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
419 unsigned long *rflags);
420
421unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
422void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
423 unsigned long *rflags);
424int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
425int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
426
427struct x86_emulate_ctxt;
428
429int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
430 int size, unsigned port);
431int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
432 int size, unsigned long count, int down,
433 gva_t address, int rep, unsigned port);
434void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
435int kvm_emulate_halt(struct kvm_vcpu *vcpu);
436int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
437int emulate_clts(struct kvm_vcpu *vcpu);
438int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
439 unsigned long *dest);
440int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
441 unsigned long value);
442
443void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
444void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
445void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
446void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
447unsigned long get_cr8(struct kvm_vcpu *vcpu);
448void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
449void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
450
451int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
452int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
453
Avi Kivity298101d2007-11-25 13:41:11 +0200454void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
455void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
Avi Kivityc3c91fe2007-11-25 14:04:58 +0200456void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
457 u32 error_code);
Avi Kivity298101d2007-11-25 13:41:11 +0200458
Zhang Xiantao54f15852007-11-19 15:24:28 +0800459void fx_init(struct kvm_vcpu *vcpu);
460
461int emulator_read_std(unsigned long addr,
462 void *val,
463 unsigned int bytes,
464 struct kvm_vcpu *vcpu);
465int emulator_write_emulated(unsigned long addr,
466 const void *val,
467 unsigned int bytes,
468 struct kvm_vcpu *vcpu);
469
470unsigned long segment_base(u16 selector);
471
Avi Kivityd835dfe2007-11-21 02:57:59 +0200472void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800473void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
474 const u8 *new, int bytes);
475int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
476void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
477int kvm_mmu_load(struct kvm_vcpu *vcpu);
478void kvm_mmu_unload(struct kvm_vcpu *vcpu);
479
480int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
481
482int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
483
Avi Kivity30677142007-10-28 18:48:59 +0200484int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800485
Carsten Ottea03490e2007-10-29 16:09:35 +0100486int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
Carsten Ottede7d7892007-10-30 18:44:25 +0100487int complete_pio(struct kvm_vcpu *vcpu);
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800488
489static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
490{
491 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
492
493 return (struct kvm_mmu_page *)page_private(page);
494}
495
496static inline u16 read_fs(void)
497{
498 u16 seg;
499 asm("mov %%fs, %0" : "=g"(seg));
500 return seg;
501}
502
503static inline u16 read_gs(void)
504{
505 u16 seg;
506 asm("mov %%gs, %0" : "=g"(seg));
507 return seg;
508}
509
510static inline u16 read_ldt(void)
511{
512 u16 ldt;
513 asm("sldt %0" : "=g"(ldt));
514 return ldt;
515}
516
517static inline void load_fs(u16 sel)
518{
519 asm("mov %0, %%fs" : : "rm"(sel));
520}
521
522static inline void load_gs(u16 sel)
523{
524 asm("mov %0, %%gs" : : "rm"(sel));
525}
526
527#ifndef load_ldt
528static inline void load_ldt(u16 sel)
529{
530 asm("lldt %0" : : "rm"(sel));
531}
532#endif
533
534static inline void get_idt(struct descriptor_table *table)
535{
536 asm("sidt %0" : "=m"(*table));
537}
538
539static inline void get_gdt(struct descriptor_table *table)
540{
541 asm("sgdt %0" : "=m"(*table));
542}
543
544static inline unsigned long read_tr_base(void)
545{
546 u16 tr;
547 asm("str %0" : "=g"(tr));
548 return segment_base(tr);
549}
550
551#ifdef CONFIG_X86_64
552static inline unsigned long read_msr(unsigned long msr)
553{
554 u64 value;
555
556 rdmsrl(msr, value);
557 return value;
558}
559#endif
560
561static inline void fx_save(struct i387_fxsave_struct *image)
562{
563 asm("fxsave (%0)":: "r" (image));
564}
565
566static inline void fx_restore(struct i387_fxsave_struct *image)
567{
568 asm("fxrstor (%0)":: "r" (image));
569}
570
571static inline void fpu_init(void)
572{
573 asm("finit");
574}
575
576static inline u32 get_rdx_init_val(void)
577{
578 return 0x600; /* P6 family */
579}
580
Avi Kivityc1a5d4f2007-11-25 14:12:03 +0200581static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
582{
583 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
584}
585
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800586#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
587#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
588#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
589#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
590#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
591#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
592#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
593#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
594#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
595
596#define MSR_IA32_TIME_STAMP_COUNTER 0x010
597
598#define TSS_IOPB_BASE_OFFSET 0x66
599#define TSS_BASE_SIZE 0x68
600#define TSS_IOPB_SIZE (65536 / 8)
601#define TSS_REDIRECTION_SIZE (256 / 8)
602#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
Hollis Blanchard53e0aa72007-12-03 16:15:26 -0600603
Carsten Otte043405e2007-10-10 17:16:19 +0200604#endif