1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 /* 31 * This file and its contents are supplied under the terms of the 32 * Common Development and Distribution License ("CDDL"), version 1.0. 33 * You may only use this file in accordance with the terms of version 34 * 1.0 of the CDDL. 35 * 36 * A full copy of the text of the CDDL should have accompanied this 37 * source. A copy of the CDDL is also available via the Internet at 38 * http://www.illumos.org/license/CDDL. 39 * 40 * Copyright 2015 Pluribus Networks Inc. 41 * Copyright 2019 Joyent, Inc. 42 * Copyright 2023 Oxide Computer Company 43 * Copyright 2021 OmniOS Community Edition (OmniOSce) Association. 44 */ 45 46 #ifndef _VMM_KERNEL_H_ 47 #define _VMM_KERNEL_H_ 48 49 #include <sys/sdt.h> 50 #include <x86/segments.h> 51 #include <sys/vmm.h> 52 #include <sys/vmm_data.h> 53 #include <sys/linker_set.h> 54 55 SDT_PROVIDER_DECLARE(vmm); 56 57 struct vm; 58 struct vm_exception; 59 struct seg_desc; 60 struct vm_exit; 61 struct vie; 62 struct vm_run; 63 struct vhpet; 64 struct vioapic; 65 struct vlapic; 66 struct vmspace; 67 struct vm_client; 68 struct vm_object; 69 struct vm_guest_paging; 70 struct vmm_data_req; 71 72 typedef int (*vmm_init_func_t)(void); 73 typedef int (*vmm_cleanup_func_t)(void); 74 typedef void (*vmm_resume_func_t)(void); 75 typedef void * (*vmi_init_func_t)(struct vm *vm); 76 typedef int (*vmi_run_func_t)(void *vmi, int vcpu, uint64_t rip); 77 typedef void (*vmi_cleanup_func_t)(void *vmi); 78 typedef int (*vmi_get_register_t)(void *vmi, int vcpu, int num, 79 uint64_t *retval); 80 typedef int (*vmi_set_register_t)(void *vmi, int vcpu, int num, 81 uint64_t val); 82 typedef int (*vmi_get_desc_t)(void *vmi, int vcpu, int num, 83 struct seg_desc *desc); 84 typedef int (*vmi_set_desc_t)(void *vmi, int vcpu, int num, 85 const struct seg_desc *desc); 86 typedef int (*vmi_get_cap_t)(void *vmi, int vcpu, int num, int *retval); 87 typedef int (*vmi_set_cap_t)(void *vmi, int vcpu, int num, int val); 88 typedef struct vlapic *(*vmi_vlapic_init)(void *vmi, int vcpu); 89 typedef void (*vmi_vlapic_cleanup)(void *vmi, struct vlapic *vlapic); 90 typedef void (*vmi_savectx)(void *vmi, int vcpu); 91 typedef void (*vmi_restorectx)(void *vmi, int vcpu); 92 typedef void (*vmi_pause_t)(void *vmi, int vcpu); 93 94 typedef int (*vmi_get_msr_t)(void *vmi, int vcpu, uint32_t msr, 95 uint64_t *valp); 96 typedef int (*vmi_set_msr_t)(void *vmi, int vcpu, uint32_t msr, 97 uint64_t val); 98 99 struct vmm_ops { 100 vmm_init_func_t init; /* module wide initialization */ 101 vmm_cleanup_func_t cleanup; 102 vmm_resume_func_t resume; 103 104 vmi_init_func_t vminit; /* vm-specific initialization */ 105 vmi_run_func_t vmrun; 106 vmi_cleanup_func_t vmcleanup; 107 vmi_get_register_t vmgetreg; 108 vmi_set_register_t vmsetreg; 109 vmi_get_desc_t vmgetdesc; 110 vmi_set_desc_t vmsetdesc; 111 vmi_get_cap_t vmgetcap; 112 vmi_set_cap_t vmsetcap; 113 vmi_vlapic_init vlapic_init; 114 vmi_vlapic_cleanup vlapic_cleanup; 115 vmi_pause_t vmpause; 116 117 vmi_savectx vmsavectx; 118 vmi_restorectx vmrestorectx; 119 120 vmi_get_msr_t vmgetmsr; 121 vmi_set_msr_t vmsetmsr; 122 }; 123 124 extern struct vmm_ops vmm_ops_intel; 125 extern struct vmm_ops vmm_ops_amd; 126 127 int vm_create(uint64_t flags, struct vm **retvm); 128 void vm_destroy(struct vm *vm); 129 int vm_reinit(struct vm *vm, uint64_t); 130 uint16_t vm_get_maxcpus(struct vm *vm); 131 void vm_get_topology(struct vm *vm, uint16_t *sockets, uint16_t *cores, 132 uint16_t *threads, uint16_t *maxcpus); 133 int vm_set_topology(struct vm *vm, uint16_t sockets, uint16_t cores, 134 uint16_t threads, uint16_t maxcpus); 135 136 int vm_pause_instance(struct vm *); 137 int vm_resume_instance(struct vm *); 138 bool vm_is_paused(struct vm *); 139 140 /* 141 * APIs that race against hardware. 142 */ 143 int vm_track_dirty_pages(struct vm *, uint64_t, size_t, uint8_t *); 144 145 /* 146 * APIs that modify the guest memory map require all vcpus to be frozen. 147 */ 148 int vm_mmap_memseg(struct vm *vm, vm_paddr_t gpa, int segid, vm_ooffset_t off, 149 size_t len, int prot, int flags); 150 int vm_munmap_memseg(struct vm *vm, vm_paddr_t gpa, size_t len); 151 int vm_alloc_memseg(struct vm *vm, int ident, size_t len, bool sysmem); 152 void vm_free_memseg(struct vm *vm, int ident); 153 int vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa); 154 int vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len); 155 int vm_assign_pptdev(struct vm *vm, int pptfd); 156 int vm_unassign_pptdev(struct vm *vm, int pptfd); 157 158 /* 159 * APIs that inspect the guest memory map require only a *single* vcpu to 160 * be frozen. This acts like a read lock on the guest memory map since any 161 * modification requires *all* vcpus to be frozen. 162 */ 163 int vm_mmap_getnext(struct vm *vm, vm_paddr_t *gpa, int *segid, 164 vm_ooffset_t *segoff, size_t *len, int *prot, int *flags); 165 int vm_get_memseg(struct vm *vm, int ident, size_t *len, bool *sysmem, 166 struct vm_object **objptr); 167 vm_paddr_t vmm_sysmem_maxaddr(struct vm *vm); 168 bool vm_mem_allocated(struct vm *vm, int vcpuid, vm_paddr_t gpa); 169 170 int vm_get_register(struct vm *vm, int vcpu, int reg, uint64_t *retval); 171 int vm_set_register(struct vm *vm, int vcpu, int reg, uint64_t val); 172 int vm_get_seg_desc(struct vm *vm, int vcpu, int reg, 173 struct seg_desc *ret_desc); 174 int vm_set_seg_desc(struct vm *vm, int vcpu, int reg, 175 const struct seg_desc *desc); 176 int vm_get_run_state(struct vm *vm, int vcpuid, uint32_t *state, 177 uint8_t *sipi_vec); 178 int vm_set_run_state(struct vm *vm, int vcpuid, uint32_t state, 179 uint8_t sipi_vec); 180 int vm_get_fpu(struct vm *vm, int vcpuid, void *buf, size_t len); 181 int vm_set_fpu(struct vm *vm, int vcpuid, void *buf, size_t len); 182 int vm_run(struct vm *vm, int vcpuid, const struct vm_entry *); 183 int vm_suspend(struct vm *vm, enum vm_suspend_how how); 184 int vm_inject_nmi(struct vm *vm, int vcpu); 185 bool vm_nmi_pending(struct vm *vm, int vcpuid); 186 void vm_nmi_clear(struct vm *vm, int vcpuid); 187 int vm_inject_extint(struct vm *vm, int vcpu); 188 bool vm_extint_pending(struct vm *vm, int vcpuid); 189 void vm_extint_clear(struct vm *vm, int vcpuid); 190 int vm_inject_init(struct vm *vm, int vcpuid); 191 int vm_inject_sipi(struct vm *vm, int vcpuid, uint8_t vec); 192 struct vlapic *vm_lapic(struct vm *vm, int cpu); 193 struct vioapic *vm_ioapic(struct vm *vm); 194 struct vhpet *vm_hpet(struct vm *vm); 195 int vm_get_capability(struct vm *vm, int vcpu, int type, int *val); 196 int vm_set_capability(struct vm *vm, int vcpu, int type, int val); 197 int vm_get_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state *state); 198 int vm_set_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state state); 199 int vm_apicid2vcpuid(struct vm *vm, int apicid); 200 int vm_activate_cpu(struct vm *vm, int vcpu); 201 int vm_suspend_cpu(struct vm *vm, int vcpu); 202 int vm_resume_cpu(struct vm *vm, int vcpu); 203 struct vm_exit *vm_exitinfo(struct vm *vm, int vcpuid); 204 struct vie *vm_vie_ctx(struct vm *vm, int vcpuid); 205 void vm_exit_suspended(struct vm *vm, int vcpuid, uint64_t rip); 206 void vm_exit_debug(struct vm *vm, int vcpuid, uint64_t rip); 207 void vm_exit_astpending(struct vm *vm, int vcpuid, uint64_t rip); 208 void vm_exit_reqidle(struct vm *vm, int vcpuid, uint64_t rip); 209 void vm_exit_run_state(struct vm *vm, int vcpuid, uint64_t rip); 210 int vm_service_mmio_read(struct vm *vm, int cpuid, uint64_t gpa, uint64_t *rval, 211 int rsize); 212 int vm_service_mmio_write(struct vm *vm, int cpuid, uint64_t gpa, uint64_t wval, 213 int wsize); 214 215 #ifdef _SYS__CPUSET_H_ 216 cpuset_t vm_active_cpus(struct vm *vm); 217 cpuset_t vm_debug_cpus(struct vm *vm); 218 cpuset_t vm_suspended_cpus(struct vm *vm); 219 #endif /* _SYS__CPUSET_H_ */ 220 221 bool vcpu_entry_bailout_checks(struct vm *vm, int vcpuid, uint64_t rip); 222 bool vcpu_run_state_pending(struct vm *vm, int vcpuid); 223 int vcpu_arch_reset(struct vm *vm, int vcpuid, bool init_only); 224 225 /* 226 * Return true if device indicated by bus/slot/func is supposed to be a 227 * pci passthrough device. 228 * 229 * Return false otherwise. 230 */ 231 bool vmm_is_pptdev(int bus, int slot, int func); 232 233 void *vm_iommu_domain(struct vm *vm); 234 235 enum vcpu_state { 236 VCPU_IDLE, 237 VCPU_FROZEN, 238 VCPU_RUNNING, 239 VCPU_SLEEPING, 240 }; 241 242 int vcpu_set_state(struct vm *vm, int vcpu, enum vcpu_state state, 243 bool from_idle); 244 enum vcpu_state vcpu_get_state(struct vm *vm, int vcpu, int *hostcpu); 245 void vcpu_block_run(struct vm *, int); 246 void vcpu_unblock_run(struct vm *, int); 247 248 uint64_t vcpu_tsc_offset(struct vm *vm, int vcpuid, bool phys_adj); 249 hrtime_t vm_normalize_hrtime(struct vm *, hrtime_t); 250 hrtime_t vm_denormalize_hrtime(struct vm *, hrtime_t); 251 252 static __inline bool 253 vcpu_is_running(struct vm *vm, int vcpu, int *hostcpu) 254 { 255 return (vcpu_get_state(vm, vcpu, hostcpu) == VCPU_RUNNING); 256 } 257 258 #ifdef _SYS_THREAD_H 259 static __inline int 260 vcpu_should_yield(struct vm *vm, int vcpu) 261 { 262 263 if (curthread->t_astflag) 264 return (1); 265 else if (CPU->cpu_runrun) 266 return (1); 267 else 268 return (0); 269 } 270 #endif /* _SYS_THREAD_H */ 271 272 typedef enum vcpu_notify { 273 VCPU_NOTIFY_NONE, 274 VCPU_NOTIFY_APIC, /* Posted intr notification (if possible) */ 275 VCPU_NOTIFY_EXIT, /* IPI to cause VM exit */ 276 } vcpu_notify_t; 277 278 void *vcpu_stats(struct vm *vm, int vcpu); 279 void vcpu_notify_event(struct vm *vm, int vcpuid); 280 void vcpu_notify_event_type(struct vm *vm, int vcpuid, vcpu_notify_t); 281 struct vmspace *vm_get_vmspace(struct vm *vm); 282 struct vm_client *vm_get_vmclient(struct vm *vm, int vcpuid); 283 struct vatpic *vm_atpic(struct vm *vm); 284 struct vatpit *vm_atpit(struct vm *vm); 285 struct vpmtmr *vm_pmtmr(struct vm *vm); 286 struct vrtc *vm_rtc(struct vm *vm); 287 288 /* 289 * Inject exception 'vector' into the guest vcpu. This function returns 0 on 290 * success and non-zero on failure. 291 * 292 * Wrapper functions like 'vm_inject_gp()' should be preferred to calling 293 * this function directly because they enforce the trap-like or fault-like 294 * behavior of an exception. 295 * 296 * This function should only be called in the context of the thread that is 297 * executing this vcpu. 298 */ 299 int vm_inject_exception(struct vm *vm, int vcpuid, uint8_t vector, 300 bool err_valid, uint32_t errcode, bool restart_instruction); 301 302 /* 303 * This function is called after a VM-exit that occurred during exception or 304 * interrupt delivery through the IDT. The format of 'intinfo' is described 305 * in Figure 15-1, "EXITINTINFO for All Intercepts", APM, Vol 2. 306 * 307 * If a VM-exit handler completes the event delivery successfully then it 308 * should call vm_exit_intinfo() to extinguish the pending event. For e.g., 309 * if the task switch emulation is triggered via a task gate then it should 310 * call this function with 'intinfo=0' to indicate that the external event 311 * is not pending anymore. 312 * 313 * Return value is 0 on success and non-zero on failure. 314 */ 315 int vm_exit_intinfo(struct vm *vm, int vcpuid, uint64_t intinfo); 316 317 /* 318 * This function is called before every VM-entry to retrieve a pending 319 * event that should be injected into the guest. This function combines 320 * nested events into a double or triple fault. 321 * 322 * Returns false if there are no events that need to be injected into the guest. 323 */ 324 bool vm_entry_intinfo(struct vm *vm, int vcpuid, uint64_t *info); 325 326 int vm_get_intinfo(struct vm *vm, int vcpuid, uint64_t *info1, uint64_t *info2); 327 328 enum vm_reg_name vm_segment_name(int seg_encoding); 329 330 struct vm_copyinfo { 331 uint64_t gpa; 332 size_t len; 333 int prot; 334 void *hva; 335 void *cookie; 336 }; 337 338 /* 339 * Set up 'copyinfo[]' to copy to/from guest linear address space starting 340 * at 'gla' and 'len' bytes long. The 'prot' should be set to PROT_READ for 341 * a copyin or PROT_WRITE for a copyout. 342 * 343 * retval is_fault Interpretation 344 * 0 0 Success 345 * 0 1 An exception was injected into the guest 346 * EFAULT N/A Unrecoverable error 347 * 348 * The 'copyinfo[]' can be passed to 'vm_copyin()' or 'vm_copyout()' only if 349 * the return value is 0. The 'copyinfo[]' resources should be freed by calling 350 * 'vm_copy_teardown()' after the copy is done. 351 */ 352 int vm_copy_setup(struct vm *vm, int vcpuid, struct vm_guest_paging *paging, 353 uint64_t gla, size_t len, int prot, struct vm_copyinfo *copyinfo, 354 uint_t num_copyinfo, int *is_fault); 355 void vm_copy_teardown(struct vm *vm, int vcpuid, struct vm_copyinfo *copyinfo, 356 uint_t num_copyinfo); 357 void vm_copyin(struct vm *vm, int vcpuid, struct vm_copyinfo *copyinfo, 358 void *kaddr, size_t len); 359 void vm_copyout(struct vm *vm, int vcpuid, const void *kaddr, 360 struct vm_copyinfo *copyinfo, size_t len); 361 362 int vcpu_trace_exceptions(struct vm *vm, int vcpuid); 363 int vcpu_trap_wbinvd(struct vm *vm, int vcpuid); 364 365 void vm_inject_ud(struct vm *vm, int vcpuid); 366 void vm_inject_gp(struct vm *vm, int vcpuid); 367 void vm_inject_ac(struct vm *vm, int vcpuid, uint32_t errcode); 368 void vm_inject_ss(struct vm *vm, int vcpuid, uint32_t errcode); 369 void vm_inject_pf(struct vm *vm, int vcpuid, uint32_t errcode, uint64_t cr2); 370 371 /* 372 * Both SVM and VMX have complex logic for injecting events such as exceptions 373 * or interrupts into the guest. Within those two backends, the progress of 374 * event injection is tracked by event_inject_state, hopefully making it easier 375 * to reason about. 376 */ 377 enum event_inject_state { 378 EIS_CAN_INJECT = 0, /* exception/interrupt can be injected */ 379 EIS_EV_EXISTING = 1, /* blocked by existing event */ 380 EIS_EV_INJECTED = 2, /* blocked by injected event */ 381 EIS_GI_BLOCK = 3, /* blocked by guest interruptability */ 382 383 /* 384 * Flag to request an immediate exit from VM context after event 385 * injection in order to perform more processing 386 */ 387 EIS_REQ_EXIT = (1 << 15), 388 }; 389 390 /* Possible result codes for MSR access emulation */ 391 typedef enum vm_msr_result { 392 VMR_OK = 0, /* succesfully emulated */ 393 VMR_GP = 1, /* #GP should be injected */ 394 VMR_UNHANLDED = 2, /* handle in userspace, kernel cannot emulate */ 395 } vm_msr_result_t; 396 397 enum vm_cpuid_capability { 398 VCC_NONE, 399 VCC_NO_EXECUTE, 400 VCC_FFXSR, 401 VCC_TCE, 402 VCC_LAST 403 }; 404 405 /* Possible flags and entry count limit definited in sys/vmm.h */ 406 typedef struct vcpu_cpuid_config { 407 uint32_t vcc_flags; 408 uint32_t vcc_nent; 409 struct vcpu_cpuid_entry *vcc_entries; 410 } vcpu_cpuid_config_t; 411 412 vcpu_cpuid_config_t *vm_cpuid_config(struct vm *, int); 413 int vm_get_cpuid(struct vm *, int, vcpu_cpuid_config_t *); 414 int vm_set_cpuid(struct vm *, int, const vcpu_cpuid_config_t *); 415 void vcpu_emulate_cpuid(struct vm *, int, uint64_t *, uint64_t *, uint64_t *, 416 uint64_t *); 417 void legacy_emulate_cpuid(struct vm *, int, uint32_t *, uint32_t *, uint32_t *, 418 uint32_t *); 419 void vcpu_cpuid_init(vcpu_cpuid_config_t *); 420 void vcpu_cpuid_cleanup(vcpu_cpuid_config_t *); 421 422 bool vm_cpuid_capability(struct vm *, int, enum vm_cpuid_capability); 423 bool validate_guest_xcr0(uint64_t, uint64_t); 424 425 void vmm_sol_glue_init(void); 426 void vmm_sol_glue_cleanup(void); 427 428 void *vmm_contig_alloc(size_t); 429 void vmm_contig_free(void *, size_t); 430 431 int vmm_mod_load(void); 432 int vmm_mod_unload(void); 433 434 bool vmm_check_iommu(void); 435 436 void vmm_call_trap(uint64_t); 437 438 /* 439 * Because of tangled headers, this is not exposed directly via the vmm_drv 440 * interface, but rather mirrored as vmm_drv_iop_cb_t in vmm_drv.h. 441 */ 442 typedef int (*ioport_handler_t)(void *, bool, uint16_t, uint8_t, uint32_t *); 443 444 int vm_ioport_access(struct vm *vm, int vcpuid, bool in, uint16_t port, 445 uint8_t bytes, uint32_t *val); 446 447 int vm_ioport_attach(struct vm *vm, uint16_t port, ioport_handler_t func, 448 void *arg, void **cookie); 449 int vm_ioport_detach(struct vm *vm, void **cookie, ioport_handler_t *old_func, 450 void **old_arg); 451 452 int vm_ioport_hook(struct vm *, uint16_t, ioport_handler_t, void *, void **); 453 void vm_ioport_unhook(struct vm *, void **); 454 455 enum vcpu_ustate { 456 VU_INIT = 0, /* initialized but has not yet attempted to run */ 457 VU_RUN, /* running in guest context */ 458 VU_IDLE, /* idle (HLTed, wait-for-SIPI, etc) */ 459 VU_EMU_KERN, /* emulation performed in-kernel */ 460 VU_EMU_USER, /* emulation performed in userspace */ 461 VU_SCHED, /* off-cpu for interrupt, preempt, lock contention */ 462 VU_MAX 463 }; 464 465 void vcpu_ustate_change(struct vm *, int, enum vcpu_ustate); 466 467 typedef struct vmm_kstats { 468 kstat_named_t vk_name; 469 } vmm_kstats_t; 470 471 typedef struct vmm_vcpu_kstats { 472 kstat_named_t vvk_vcpu; 473 kstat_named_t vvk_time_init; 474 kstat_named_t vvk_time_run; 475 kstat_named_t vvk_time_idle; 476 kstat_named_t vvk_time_emu_kern; 477 kstat_named_t vvk_time_emu_user; 478 kstat_named_t vvk_time_sched; 479 } vmm_vcpu_kstats_t; 480 481 #define VMM_KSTAT_CLASS "misc" 482 483 int vmm_kstat_update_vcpu(struct kstat *, int); 484 485 typedef struct vmm_data_req { 486 uint16_t vdr_class; 487 uint16_t vdr_version; 488 uint32_t vdr_flags; 489 uint32_t vdr_len; 490 void *vdr_data; 491 uint32_t *vdr_result_len; 492 } vmm_data_req_t; 493 494 typedef int (*vmm_data_writef_t)(void *, const vmm_data_req_t *); 495 typedef int (*vmm_data_readf_t)(void *, const vmm_data_req_t *); 496 typedef int (*vmm_data_vcpu_writef_t)(struct vm *, int, const vmm_data_req_t *); 497 typedef int (*vmm_data_vcpu_readf_t)(struct vm *, int, const vmm_data_req_t *); 498 499 typedef struct vmm_data_version_entry { 500 uint16_t vdve_class; 501 uint16_t vdve_version; 502 uint16_t vdve_len_expect; 503 uint16_t vdve_len_per_item; 504 vmm_data_readf_t vdve_readf; 505 vmm_data_writef_t vdve_writef; 506 vmm_data_vcpu_readf_t vdve_vcpu_readf; 507 vmm_data_vcpu_writef_t vdve_vcpu_writef; 508 } vmm_data_version_entry_t; 509 510 #define VMM_DATA_VERSION(sym) SET_ENTRY(vmm_data_version_entries, sym) 511 512 int vmm_data_read(struct vm *, int, const vmm_data_req_t *); 513 int vmm_data_write(struct vm *, int, const vmm_data_req_t *); 514 515 #endif /* _VMM_KERNEL_H_ */ 516