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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>
Avi Kivity15ad7142007-07-11 18:17:21 +030016#include <linux/preempt.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040017#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080018
Avi Kivity6aa8b732006-12-10 02:21:36 -080019#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
Rusty Russellf802a302007-07-17 23:32:55 +100022#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
23#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
24#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
Avi Kivity6aa8b732006-12-10 02:21:36 -080025
Avi Kivity6aa8b732006-12-10 02:21:36 -080026#define KVM_GUEST_CR0_MASK \
Rusty Russell707d92fa2007-07-17 23:19:08 +100027 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
28 | X86_CR0_NW | X86_CR0_CD)
Avi Kivity6aa8b732006-12-10 02:21:36 -080029#define KVM_VM_CR0_ALWAYS_ON \
Rusty Russell707d92fa2007-07-17 23:19:08 +100030 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
31 | X86_CR0_MP)
Avi Kivity6aa8b732006-12-10 02:21:36 -080032#define KVM_GUEST_CR4_MASK \
Rusty Russell66aee912007-07-17 23:34:16 +100033 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
34#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
35#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
Avi Kivity6aa8b732006-12-10 02:21:36 -080036
37#define INVALID_PAGE (~(hpa_t)0)
38#define UNMAPPED_GVA (~(gpa_t)0)
39
Avi Kivityef9254d2007-06-05 14:37:09 +030040#define KVM_MAX_VCPUS 4
Avi Kivitye8207542007-03-30 16:54:30 +030041#define KVM_ALIAS_SLOTS 4
Izik Eidus2e2c6182007-08-20 18:11:00 +030042#define KVM_MEMORY_SLOTS 8
Izik Eidus82ce2c92007-10-02 18:52:55 +020043#define KVM_PERMILLE_MMU_PAGES 20
44#define KVM_MIN_ALLOC_MMU_PAGES 64
Avi Kivity7494c0c2007-05-01 18:24:38 +030045#define KVM_NUM_MMU_PAGES 1024
Avi Kivityebeace82007-01-05 16:36:47 -080046#define KVM_MIN_FREE_MMU_PAGES 5
47#define KVM_REFILL_PAGES 25
Avi Kivity06465c52007-02-28 20:46:53 +020048#define KVM_MAX_CPUID_ENTRIES 40
Avi Kivity6aa8b732006-12-10 02:21:36 -080049
Avi Kivity6aa8b732006-12-10 02:21:36 -080050#define DE_VECTOR 0
Anthony Liguori7aa81cc2007-09-17 14:57:50 -050051#define UD_VECTOR 6
Anthony Liguori7807fa62007-04-23 09:17:21 -050052#define NM_VECTOR 7
Avi Kivity6aa8b732006-12-10 02:21:36 -080053#define DF_VECTOR 8
54#define TS_VECTOR 10
55#define NP_VECTOR 11
56#define SS_VECTOR 12
57#define GP_VECTOR 13
58#define PF_VECTOR 14
59
60#define SELECTOR_TI_MASK (1 << 2)
61#define SELECTOR_RPL_MASK 0x03
62
63#define IOPL_SHIFT 12
64
Avi Kivity039576c2007-03-20 12:46:50 +020065#define KVM_PIO_PAGE_OFFSET 1
66
Avi Kivity6aa8b732006-12-10 02:21:36 -080067/*
Avi Kivityd9e368d2007-06-07 19:18:30 +030068 * vcpu->requests bit members
69 */
Avi Kivity3176bc32007-10-16 17:22:08 +020070#define KVM_REQ_TLB_FLUSH 0
Avi Kivityd9e368d2007-06-07 19:18:30 +030071
72/*
Avi Kivity6aa8b732006-12-10 02:21:36 -080073 * Address types:
74 *
75 * gva - guest virtual address
76 * gpa - guest physical address
77 * gfn - guest frame number
78 * hva - host virtual address
79 * hpa - host physical address
80 * hfn - host frame number
81 */
82
83typedef unsigned long gva_t;
84typedef u64 gpa_t;
85typedef unsigned long gfn_t;
86
87typedef unsigned long hva_t;
88typedef u64 hpa_t;
89typedef unsigned long hfn_t;
90
Avi Kivitycea0f0e2007-01-05 16:36:43 -080091#define NR_PTE_CHAIN_ENTRIES 5
92
93struct kvm_pte_chain {
94 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
95 struct hlist_node link;
96};
97
98/*
99 * kvm_mmu_page_role, below, is defined as:
100 *
101 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
102 * bits 4:7 - page table level for this shadow (1-4)
103 * bits 8:9 - page table quadrant for 2-level guests
104 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
Avi Kivityd55e2cb2007-07-10 17:50:55 +0300105 * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800106 */
107union kvm_mmu_page_role {
108 unsigned word;
109 struct {
110 unsigned glevels : 4;
111 unsigned level : 4;
112 unsigned quadrant : 2;
113 unsigned pad_for_nice_hex_output : 6;
114 unsigned metaphysical : 1;
Avi Kivityd55e2cb2007-07-10 17:50:55 +0300115 unsigned hugepage_access : 3;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800116 };
117};
118
Avi Kivity6aa8b732006-12-10 02:21:36 -0800119struct kvm_mmu_page {
120 struct list_head link;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800121 struct hlist_node hash_link;
122
123 /*
124 * The following two entries are used to key the shadow page in the
125 * hash table.
126 */
127 gfn_t gfn;
128 union kvm_mmu_page_role role;
129
Avi Kivity47ad8e62007-05-06 15:50:58 +0300130 u64 *spt;
Izik Eidus290fc382007-09-27 14:11:22 +0200131 /* hold the gfn of each spte inside spt */
132 gfn_t *gfns;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800133 unsigned long slot_bitmap; /* One bit set per slot which has memory
134 * in this shadow page.
135 */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800136 int multimapped; /* More than one parent_pte? */
Avi Kivity3bb65a22007-01-05 16:36:51 -0800137 int root_count; /* Currently serving as active root */
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800138 union {
139 u64 *parent_pte; /* !multimapped */
140 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
141 };
Avi Kivity6aa8b732006-12-10 02:21:36 -0800142};
143
Avi Kivity6aa8b732006-12-10 02:21:36 -0800144struct kvm_vcpu;
Rusty Russellc16f8622007-07-30 21:12:19 +1000145extern struct kmem_cache *kvm_vcpu_cache;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800146
147/*
148 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
149 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
150 * mode.
151 */
152struct kvm_mmu {
153 void (*new_cr3)(struct kvm_vcpu *vcpu);
154 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800155 void (*free)(struct kvm_vcpu *vcpu);
156 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivityc7addb92007-09-16 18:58:32 +0200157 void (*prefetch_page)(struct kvm_vcpu *vcpu,
158 struct kvm_mmu_page *page);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800159 hpa_t root_hpa;
160 int root_level;
161 int shadow_root_level;
Avi Kivity17ac10a2007-01-05 16:36:40 -0800162
163 u64 *pae_root;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800164};
165
Izik Eidus290fc382007-09-27 14:11:22 +0200166#define KVM_NR_MEM_OBJS 40
Avi Kivity714b93d2007-01-05 16:36:53 -0800167
168struct kvm_mmu_memory_cache {
169 int nobjs;
170 void *objects[KVM_NR_MEM_OBJS];
171};
172
173/*
174 * We don't want allocation failures within the mmu code, so we preallocate
175 * enough memory for a single page fault in a cache.
176 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800177struct kvm_guest_debug {
178 int enabled;
179 unsigned long bp[4];
180 int singlestep;
181};
182
183enum {
184 VCPU_REGS_RAX = 0,
185 VCPU_REGS_RCX = 1,
186 VCPU_REGS_RDX = 2,
187 VCPU_REGS_RBX = 3,
188 VCPU_REGS_RSP = 4,
189 VCPU_REGS_RBP = 5,
190 VCPU_REGS_RSI = 6,
191 VCPU_REGS_RDI = 7,
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800192#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800193 VCPU_REGS_R8 = 8,
194 VCPU_REGS_R9 = 9,
195 VCPU_REGS_R10 = 10,
196 VCPU_REGS_R11 = 11,
197 VCPU_REGS_R12 = 12,
198 VCPU_REGS_R13 = 13,
199 VCPU_REGS_R14 = 14,
200 VCPU_REGS_R15 = 15,
201#endif
202 NR_VCPU_REGS
203};
204
205enum {
206 VCPU_SREG_CS,
207 VCPU_SREG_DS,
208 VCPU_SREG_ES,
209 VCPU_SREG_FS,
210 VCPU_SREG_GS,
211 VCPU_SREG_SS,
212 VCPU_SREG_TR,
213 VCPU_SREG_LDTR,
214};
215
Laurent Vivier34273182007-09-18 11:27:37 +0200216#include "x86_emulate.h"
217
Avi Kivity039576c2007-03-20 12:46:50 +0200218struct kvm_pio_request {
219 unsigned long count;
220 int cur_count;
221 struct page *guest_pages[2];
222 unsigned guest_page_offset;
223 int in;
Eddie Dong74906342007-06-19 18:05:03 +0300224 int port;
Avi Kivity039576c2007-03-20 12:46:50 +0200225 int size;
226 int string;
227 int down;
228 int rep;
229};
230
Avi Kivity1165f5f2007-04-19 17:27:43 +0300231struct kvm_stat {
232 u32 pf_fixed;
233 u32 pf_guest;
234 u32 tlb_flush;
235 u32 invlpg;
236
237 u32 exits;
238 u32 io_exits;
239 u32 mmio_exits;
240 u32 signal_exits;
241 u32 irq_window_exits;
242 u32 halt_exits;
Eddie Dongb6958ce2007-07-18 12:15:21 +0300243 u32 halt_wakeup;
Avi Kivity1165f5f2007-04-19 17:27:43 +0300244 u32 request_irq_exits;
245 u32 irq_exits;
Avi Kivitye6adf282007-04-30 16:07:54 +0300246 u32 light_exits;
Eddie Dong2cc51562007-05-21 07:28:09 +0300247 u32 efer_reload;
Avi Kivity1165f5f2007-04-19 17:27:43 +0300248};
249
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400250struct kvm_io_device {
251 void (*read)(struct kvm_io_device *this,
252 gpa_t addr,
253 int len,
254 void *val);
255 void (*write)(struct kvm_io_device *this,
256 gpa_t addr,
257 int len,
258 const void *val);
259 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
260 void (*destructor)(struct kvm_io_device *this);
261
262 void *private;
263};
264
265static inline void kvm_iodevice_read(struct kvm_io_device *dev,
266 gpa_t addr,
267 int len,
268 void *val)
269{
270 dev->read(dev, addr, len, val);
271}
272
273static inline void kvm_iodevice_write(struct kvm_io_device *dev,
274 gpa_t addr,
275 int len,
276 const void *val)
277{
278 dev->write(dev, addr, len, val);
279}
280
281static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
282{
283 return dev->in_range(dev, addr);
284}
285
286static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
287{
Eddie Dong74906342007-06-19 18:05:03 +0300288 if (dev->destructor)
289 dev->destructor(dev);
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400290}
291
292/*
293 * It would be nice to use something smarter than a linear search, TBD...
294 * Thankfully we dont expect many devices to register (famous last words :),
295 * so until then it will suffice. At least its abstracted so we can change
296 * in one place.
297 */
298struct kvm_io_bus {
299 int dev_count;
300#define NR_IOBUS_DEVS 6
301 struct kvm_io_device *devs[NR_IOBUS_DEVS];
302};
303
304void kvm_io_bus_init(struct kvm_io_bus *bus);
305void kvm_io_bus_destroy(struct kvm_io_bus *bus);
306struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
307void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
308 struct kvm_io_device *dev);
309
Avi Kivity6aa8b732006-12-10 02:21:36 -0800310struct kvm_vcpu {
311 struct kvm *kvm;
Avi Kivity15ad7142007-07-11 18:17:21 +0300312 struct preempt_notifier preempt_notifier;
Qing Hedad37952007-07-12 12:33:56 +0300313 int vcpu_id;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800314 struct mutex mutex;
315 int cpu;
Avi Kivity0cc50642007-03-25 12:07:27 +0200316 u64 host_tsc;
Avi Kivity9a2bb7f2007-02-22 12:58:31 +0200317 struct kvm_run *run;
Dor Laorc1150d82007-01-05 16:36:24 -0800318 int interrupt_window_open;
Avi Kivityd9e368d2007-06-07 19:18:30 +0300319 int guest_mode;
320 unsigned long requests;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800321 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
Rusty Russell9eb829c2007-07-18 13:05:58 +1000322 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800323 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
324 unsigned long rip; /* needs vcpu_load_rsp_rip() */
325
326 unsigned long cr0;
327 unsigned long cr2;
328 unsigned long cr3;
329 unsigned long cr4;
330 unsigned long cr8;
Avi Kivity1342d352007-01-05 16:36:39 -0800331 u64 pdptrs[4]; /* pae */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800332 u64 shadow_efer;
333 u64 apic_base;
Eddie Dong97222cc2007-09-12 10:58:04 +0300334 struct kvm_lapic *apic; /* kernel irqchip context */
He, Qingc5ec1532007-09-03 17:07:41 +0300335#define VCPU_MP_STATE_RUNNABLE 0
336#define VCPU_MP_STATE_UNINITIALIZED 1
337#define VCPU_MP_STATE_INIT_RECEIVED 2
338#define VCPU_MP_STATE_SIPI_RECEIVED 3
339#define VCPU_MP_STATE_HALTED 4
340 int mp_state;
341 int sipi_vector;
Avi Kivity6f00e682007-01-26 00:56:40 -0800342 u64 ia32_misc_enable_msr;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800343
Avi Kivity6aa8b732006-12-10 02:21:36 -0800344 struct kvm_mmu mmu;
345
Avi Kivity714b93d2007-01-05 16:36:53 -0800346 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
347 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
Avi Kivityd3d25b02007-05-30 12:34:53 +0300348 struct kvm_mmu_memory_cache mmu_page_cache;
349 struct kvm_mmu_memory_cache mmu_page_header_cache;
Avi Kivity714b93d2007-01-05 16:36:53 -0800350
Avi Kivity86a5ba02007-01-05 16:36:50 -0800351 gfn_t last_pt_write_gfn;
352 int last_pt_write_count;
Avi Kivity12b7d282007-09-23 14:10:49 +0200353 u64 *last_pte_updated;
Avi Kivity86a5ba02007-01-05 16:36:50 -0800354
Avi Kivity6aa8b732006-12-10 02:21:36 -0800355 struct kvm_guest_debug guest_debug;
356
Rusty Russellb114b082007-07-30 21:13:43 +1000357 struct i387_fxsave_struct host_fx_image;
358 struct i387_fxsave_struct guest_fx_image;
Anthony Liguori7807fa62007-04-23 09:17:21 -0500359 int fpu_active;
Avi Kivity7702fd12007-06-14 16:27:40 +0300360 int guest_fpu_loaded;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800361
362 int mmio_needed;
363 int mmio_read_completed;
364 int mmio_is_write;
365 int mmio_size;
366 unsigned char mmio_data[8];
367 gpa_t mmio_phys_addr;
Avi Kivitye7df56e2007-03-14 15:54:54 +0200368 gva_t mmio_fault_cr2;
Avi Kivity039576c2007-03-20 12:46:50 +0200369 struct kvm_pio_request pio;
370 void *pio_data;
Eddie Dongb6958ce2007-07-18 12:15:21 +0300371 wait_queue_head_t wq;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800372
Avi Kivity1961d272007-03-05 19:46:05 +0200373 int sigset_active;
374 sigset_t sigset;
375
Avi Kivity1165f5f2007-04-19 17:27:43 +0300376 struct kvm_stat stat;
377
Avi Kivity6aa8b732006-12-10 02:21:36 -0800378 struct {
379 int active;
380 u8 save_iopl;
381 struct kvm_save_segment {
382 u16 selector;
383 unsigned long base;
384 u32 limit;
385 u32 ar;
386 } tr, es, ds, fs, gs;
387 } rmode;
Avi Kivity72d6e5a2007-06-05 16:15:51 +0300388 int halt_request; /* real mode on Intel only */
Avi Kivity06465c52007-02-28 20:46:53 +0200389
390 int cpuid_nent;
391 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Laurent Vivier34273182007-09-18 11:27:37 +0200392
393 /* emulate context */
394
395 struct x86_emulate_ctxt emulate_ctxt;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800396};
397
Avi Kivitye8207542007-03-30 16:54:30 +0300398struct kvm_mem_alias {
399 gfn_t base_gfn;
400 unsigned long npages;
401 gfn_t target_gfn;
402};
403
Avi Kivity6aa8b732006-12-10 02:21:36 -0800404struct kvm_memory_slot {
405 gfn_t base_gfn;
406 unsigned long npages;
407 unsigned long flags;
408 struct page **phys_mem;
Izik Eidus290fc382007-09-27 14:11:22 +0200409 unsigned long *rmap;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800410 unsigned long *dirty_bitmap;
Izik Eidus6fc138d2007-10-09 19:20:39 +0200411 int user_alloc; /* user allocated memory */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800412};
413
414struct kvm {
Shaohua Li11ec2802007-07-23 14:51:37 +0800415 struct mutex lock; /* protects everything except vcpus */
Avi Kivitye8207542007-03-30 16:54:30 +0300416 int naliases;
417 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
Avi Kivity6aa8b732006-12-10 02:21:36 -0800418 int nmemslots;
419 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800420 /*
421 * Hash table of struct kvm_mmu_page.
422 */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800423 struct list_head active_mmu_pages;
Izik Eidus82ce2c92007-10-02 18:52:55 +0200424 unsigned int n_free_mmu_pages;
425 unsigned int n_requested_mmu_pages;
426 unsigned int n_alloc_mmu_pages;
Avi Kivitycea0f0e2007-01-05 16:36:43 -0800427 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000428 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Avi Kivitycd4a4e52007-01-05 16:36:38 -0800429 unsigned long rmap_overflow;
Avi Kivity133de902007-02-12 00:54:44 -0800430 struct list_head vm_list;
Avi Kivitybccf2152007-02-21 18:04:26 +0200431 struct file *filp;
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400432 struct kvm_io_bus mmio_bus;
Eddie Dong74906342007-06-19 18:05:03 +0300433 struct kvm_io_bus pio_bus;
Eddie Dong85f455f2007-07-06 12:20:49 +0300434 struct kvm_pic *vpic;
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300435 struct kvm_ioapic *vioapic;
He, Qing932f72a2007-09-03 17:01:36 +0300436 int round_robin_prev_vcpu;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800437};
438
Eddie Dong85f455f2007-07-06 12:20:49 +0300439static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
440{
441 return kvm->vpic;
442}
443
Eddie Dong1fd4f2a2007-07-18 12:03:39 +0300444static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
445{
446 return kvm->vioapic;
447}
448
Eddie Dong85f455f2007-07-06 12:20:49 +0300449static inline int irqchip_in_kernel(struct kvm *kvm)
450{
451 return pic_irqchip(kvm) != 0;
452}
453
Avi Kivity6aa8b732006-12-10 02:21:36 -0800454struct descriptor_table {
455 u16 limit;
456 unsigned long base;
457} __attribute__((packed));
458
Christian Ehrhardtcbdd1be2007-09-09 15:41:59 +0300459struct kvm_x86_ops {
Avi Kivity6aa8b732006-12-10 02:21:36 -0800460 int (*cpu_has_kvm_support)(void); /* __init */
461 int (*disabled_by_bios)(void); /* __init */
462 void (*hardware_enable)(void *dummy); /* __init */
463 void (*hardware_disable)(void *dummy);
Yang, Sheng002c7f72007-07-31 14:23:01 +0300464 void (*check_processor_compatibility)(void *rtn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800465 int (*hardware_setup)(void); /* __init */
466 void (*hardware_unsetup)(void); /* __exit */
467
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000468 /* Create, but do not attach this VCPU */
469 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800470 void (*vcpu_free)(struct kvm_vcpu *vcpu);
Avi Kivity04d2cc72007-09-10 18:10:54 +0300471 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800472
Avi Kivity04d2cc72007-09-10 18:10:54 +0300473 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
Avi Kivity15ad7142007-07-11 18:17:21 +0300474 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800475 void (*vcpu_put)(struct kvm_vcpu *vcpu);
Avi Kivity774c47f2007-02-12 00:54:47 -0800476 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800477
478 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
479 struct kvm_debug_guest *dbg);
Avi Kivity04d2cc72007-09-10 18:10:54 +0300480 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800481 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
482 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
483 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
484 void (*get_segment)(struct kvm_vcpu *vcpu,
485 struct kvm_segment *var, int seg);
486 void (*set_segment)(struct kvm_vcpu *vcpu,
487 struct kvm_segment *var, int seg);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800488 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
Anthony Liguori25c4c272007-04-27 09:29:21 +0300489 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800490 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800491 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
492 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
493 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
494 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
495 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
496 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
497 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
498 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
499 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
500 int *exception);
501 void (*cache_regs)(struct kvm_vcpu *vcpu);
502 void (*decache_regs)(struct kvm_vcpu *vcpu);
503 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
504 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
505
Avi Kivity6aa8b732006-12-10 02:21:36 -0800506 void (*tlb_flush)(struct kvm_vcpu *vcpu);
507 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
508 unsigned long addr, u32 err_code);
509
510 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
511
Avi Kivity04d2cc72007-09-10 18:10:54 +0300512 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
513 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800514 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
Ingo Molnar102d8322007-02-19 14:37:47 +0200515 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
516 unsigned char *hypercall_addr);
Eddie Dong2a8067f2007-08-06 16:29:07 +0300517 int (*get_irq)(struct kvm_vcpu *vcpu);
518 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
Avi Kivity04d2cc72007-09-10 18:10:54 +0300519 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
520 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
521 struct kvm_run *run);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800522};
523
Christian Ehrhardtcbdd1be2007-09-09 15:41:59 +0300524extern struct kvm_x86_ops *kvm_x86_ops;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800525
Rusty Russellf0242472007-08-01 10:48:02 +1000526/* The guest did something we don't support. */
527#define pr_unimpl(vcpu, fmt, ...) \
528 do { \
529 if (printk_ratelimit()) \
530 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
531 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
Mike Dayd77c26f2007-10-08 09:02:08 -0400532 } while (0)
Rusty Russellf0242472007-08-01 10:48:02 +1000533
Avi Kivity6aa8b732006-12-10 02:21:36 -0800534#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
535#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
536
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000537int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
538void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
539
Carsten Otte313a3dc2007-10-11 19:16:52 +0200540void vcpu_load(struct kvm_vcpu *vcpu);
541void vcpu_put(struct kvm_vcpu *vcpu);
542
543
Christian Ehrhardtcbdd1be2007-09-09 15:41:59 +0300544int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
Rusty Russellc16f8622007-07-30 21:12:19 +1000545 struct module *module);
Christian Ehrhardtcbdd1be2007-09-09 15:41:59 +0300546void kvm_exit_x86(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800547
Avi Kivityb5a33a72007-04-15 16:31:09 +0300548int kvm_mmu_module_init(void);
549void kvm_mmu_module_exit(void);
550
Avi Kivity6aa8b732006-12-10 02:21:36 -0800551void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
Ingo Molnar8018c272006-12-29 16:50:01 -0800552int kvm_mmu_create(struct kvm_vcpu *vcpu);
553int kvm_mmu_setup(struct kvm_vcpu *vcpu);
Avi Kivityc7addb92007-09-16 18:58:32 +0200554void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800555
556int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
Avi Kivity90cb0522007-07-17 13:04:56 +0300557void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
558void kvm_mmu_zap_all(struct kvm *kvm);
Izik Eidus82ce2c92007-10-02 18:52:55 +0200559void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800560
Anthony Liguori4a4c9922007-10-10 20:08:41 -0500561hpa_t gpa_to_hpa(struct kvm *kvm, gpa_t gpa);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800562#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
563#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
564static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
565hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity039576c2007-03-20 12:46:50 +0200566struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800567
Izik Eiduscea7bb22007-10-17 19:17:48 +0200568extern struct page *bad_page;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800569
Izik Eiduscea7bb22007-10-17 19:17:48 +0200570int is_error_page(struct page *page);
Izik Eidus290fc382007-09-27 14:11:22 +0200571gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
Avi Kivity954bbbc2007-03-30 14:02:32 +0300572struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Izik Eidus195aefd2007-10-01 22:14:18 +0200573int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
574 int len);
575int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
576int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
577 int offset, int len);
578int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
579 unsigned long len);
580int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
581int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800582struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
583void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
584
585enum emulation_result {
586 EMULATE_DONE, /* no further processing */
587 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
588 EMULATE_FAIL, /* can't emulate this instruction */
589};
590
591int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
Laurent Vivier34273182007-09-18 11:27:37 +0200592 unsigned long cr2, u16 error_code, int no_decode);
Avi Kivity054b1362007-09-12 13:21:09 +0300593void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800594void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
595void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
596void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
597 unsigned long *rflags);
598
599unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
600void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
601 unsigned long *rflags);
Avi Kivity35f3f282007-07-17 14:20:30 +0300602int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
603int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800604
605struct x86_emulate_ctxt;
606
Mike Dayd77c26f2007-10-08 09:02:08 -0400607int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
Laurent Vivier3090dd72007-08-05 10:43:32 +0300608 int size, unsigned port);
609int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
610 int size, unsigned long count, int down,
611 gva_t address, int rep, unsigned port);
Avi Kivity06465c52007-02-28 20:46:53 +0200612void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
Avi Kivityd3bef152007-06-05 15:53:05 +0300613int kvm_emulate_halt(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800614int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
615int emulate_clts(struct kvm_vcpu *vcpu);
Mike Dayd77c26f2007-10-08 09:02:08 -0400616int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
Avi Kivity6aa8b732006-12-10 02:21:36 -0800617 unsigned long *dest);
618int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
619 unsigned long value);
620
621void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
622void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
623void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
624void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
Eddie Dong7017fc32007-07-18 11:34:57 +0300625unsigned long get_cr8(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800626void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
Rusty Russell1747fb72007-09-06 01:21:32 +1000627void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800628
Avi Kivity3bab1f52006-12-29 16:49:48 -0800629int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
630int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800631
632void fx_init(struct kvm_vcpu *vcpu);
633
Avi Kivity6aa8b732006-12-10 02:21:36 -0800634void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300635void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
636void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivityd9e368d2007-06-07 19:18:30 +0300637void kvm_flush_remote_tlbs(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800638
Laurent Viviere7d5d762007-07-30 13:41:19 +0300639int emulator_read_std(unsigned long addr,
Mike Dayd77c26f2007-10-08 09:02:08 -0400640 void *val,
Laurent Viviere7d5d762007-07-30 13:41:19 +0300641 unsigned int bytes,
642 struct kvm_vcpu *vcpu);
643int emulator_write_emulated(unsigned long addr,
644 const void *val,
645 unsigned int bytes,
646 struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800647
648unsigned long segment_base(u16 selector);
649
Avi Kivity09072da2007-05-01 14:16:52 +0300650void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
Shaohua Life551882007-07-23 14:51:39 +0800651 const u8 *new, int bytes);
Avi Kivitya4360362007-01-05 16:36:45 -0800652int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity22d95b12007-09-14 20:26:06 +0300653void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
Avi Kivity17c3ba92007-06-04 15:58:30 +0300654int kvm_mmu_load(struct kvm_vcpu *vcpu);
655void kvm_mmu_unload(struct kvm_vcpu *vcpu);
Avi Kivityebeace82007-01-05 16:36:47 -0800656
Anthony Liguori7aa81cc2007-09-17 14:57:50 -0500657int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
658
659int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
Avi Kivity270fd9b2007-02-19 14:37:47 +0200660
Carsten Otte043405e2007-10-10 17:16:19 +0200661long kvm_arch_dev_ioctl(struct file *filp,
662 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200663long kvm_arch_vcpu_ioctl(struct file *filp,
664 unsigned int ioctl, unsigned long arg);
665void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
666void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
667
Carsten Otte043405e2007-10-10 17:16:19 +0200668__init void kvm_arch_init(void);
669
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200670static inline void kvm_guest_enter(void)
671{
672 current->flags |= PF_VCPU;
673}
674
675static inline void kvm_guest_exit(void)
676{
677 current->flags &= ~PF_VCPU;
678}
679
Avi Kivityebeace82007-01-05 16:36:47 -0800680static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
681 u32 error_code)
682{
Avi Kivityebeace82007-01-05 16:36:47 -0800683 return vcpu->mmu.page_fault(vcpu, gva, error_code);
684}
Avi Kivityda4a00f2007-01-05 16:36:44 -0800685
Avi Kivity22d95b12007-09-14 20:26:06 +0300686static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
687{
688 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
689 __kvm_mmu_free_some_pages(vcpu);
690}
691
Avi Kivity17c3ba92007-06-04 15:58:30 +0300692static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
693{
694 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
695 return 0;
696
697 return kvm_mmu_load(vcpu);
698}
699
Avi Kivitya9058ec2006-12-29 16:49:37 -0800700static inline int is_long_mode(struct kvm_vcpu *vcpu)
701{
702#ifdef CONFIG_X86_64
703 return vcpu->shadow_efer & EFER_LME;
704#else
705 return 0;
706#endif
707}
708
Avi Kivity6aa8b732006-12-10 02:21:36 -0800709static inline int is_pae(struct kvm_vcpu *vcpu)
710{
Rusty Russell66aee912007-07-17 23:34:16 +1000711 return vcpu->cr4 & X86_CR4_PAE;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800712}
713
714static inline int is_pse(struct kvm_vcpu *vcpu)
715{
Rusty Russell66aee912007-07-17 23:34:16 +1000716 return vcpu->cr4 & X86_CR4_PSE;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800717}
718
719static inline int is_paging(struct kvm_vcpu *vcpu)
720{
Rusty Russell707d92fa2007-07-17 23:19:08 +1000721 return vcpu->cr0 & X86_CR0_PG;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800722}
723
724static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
725{
726 return slot - kvm->memslots;
727}
728
729static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
730{
731 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
732
Markus Rechberger5972e952007-02-19 14:37:47 +0200733 return (struct kvm_mmu_page *)page_private(page);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800734}
735
736static inline u16 read_fs(void)
737{
738 u16 seg;
Mike Dayd77c26f2007-10-08 09:02:08 -0400739 asm("mov %%fs, %0" : "=g"(seg));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800740 return seg;
741}
742
743static inline u16 read_gs(void)
744{
745 u16 seg;
Mike Dayd77c26f2007-10-08 09:02:08 -0400746 asm("mov %%gs, %0" : "=g"(seg));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800747 return seg;
748}
749
750static inline u16 read_ldt(void)
751{
752 u16 ldt;
Mike Dayd77c26f2007-10-08 09:02:08 -0400753 asm("sldt %0" : "=g"(ldt));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800754 return ldt;
755}
756
757static inline void load_fs(u16 sel)
758{
Mike Dayd77c26f2007-10-08 09:02:08 -0400759 asm("mov %0, %%fs" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800760}
761
762static inline void load_gs(u16 sel)
763{
Mike Dayd77c26f2007-10-08 09:02:08 -0400764 asm("mov %0, %%gs" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800765}
766
767#ifndef load_ldt
768static inline void load_ldt(u16 sel)
769{
Mike Dayd77c26f2007-10-08 09:02:08 -0400770 asm("lldt %0" : : "rm"(sel));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800771}
772#endif
773
774static inline void get_idt(struct descriptor_table *table)
775{
Mike Dayd77c26f2007-10-08 09:02:08 -0400776 asm("sidt %0" : "=m"(*table));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800777}
778
779static inline void get_gdt(struct descriptor_table *table)
780{
Mike Dayd77c26f2007-10-08 09:02:08 -0400781 asm("sgdt %0" : "=m"(*table));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800782}
783
784static inline unsigned long read_tr_base(void)
785{
786 u16 tr;
Mike Dayd77c26f2007-10-08 09:02:08 -0400787 asm("str %0" : "=g"(tr));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800788 return segment_base(tr);
789}
790
Avi Kivity05b3e0c2006-12-13 00:33:45 -0800791#ifdef CONFIG_X86_64
Avi Kivity6aa8b732006-12-10 02:21:36 -0800792static inline unsigned long read_msr(unsigned long msr)
793{
794 u64 value;
795
796 rdmsrl(msr, value);
797 return value;
798}
799#endif
800
Rusty Russellb114b082007-07-30 21:13:43 +1000801static inline void fx_save(struct i387_fxsave_struct *image)
Avi Kivity6aa8b732006-12-10 02:21:36 -0800802{
Mike Dayd77c26f2007-10-08 09:02:08 -0400803 asm("fxsave (%0)":: "r" (image));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800804}
805
Rusty Russellb114b082007-07-30 21:13:43 +1000806static inline void fx_restore(struct i387_fxsave_struct *image)
Avi Kivity6aa8b732006-12-10 02:21:36 -0800807{
Mike Dayd77c26f2007-10-08 09:02:08 -0400808 asm("fxrstor (%0)":: "r" (image));
Avi Kivity6aa8b732006-12-10 02:21:36 -0800809}
810
811static inline void fpu_init(void)
812{
Mike Dayd77c26f2007-10-08 09:02:08 -0400813 asm("finit");
Avi Kivity6aa8b732006-12-10 02:21:36 -0800814}
815
816static inline u32 get_rdx_init_val(void)
817{
818 return 0x600; /* P6 family */
819}
820
821#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
822#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
823#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
824#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
825#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
826#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
827#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
828#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
829#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
830
831#define MSR_IA32_TIME_STAMP_COUNTER 0x010
832
833#define TSS_IOPB_BASE_OFFSET 0x66
834#define TSS_BASE_SIZE 0x68
835#define TSS_IOPB_SIZE (65536 / 8)
836#define TSS_REDIRECTION_SIZE (256 / 8)
837#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
838
Avi Kivity6aa8b732006-12-10 02:21:36 -0800839#endif