1 /****************************************************************************** 2 * memory.h 3 * 4 * Memory reservation and information. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Copyright (c) 2005, Keir Fraser <keir@xensource.com> 25 */ 26 27 #ifndef __XEN_PUBLIC_MEMORY_H__ 28 #define __XEN_PUBLIC_MEMORY_H__ 29 30 #include "xen.h" 31 #include "physdev.h" 32 33 /* 34 * Increase or decrease the specified domain's memory reservation. Returns the 35 * number of extents successfully allocated or freed. 36 * arg == addr of struct xen_memory_reservation. 37 */ 38 #define XENMEM_increase_reservation 0 39 #define XENMEM_decrease_reservation 1 40 #define XENMEM_populate_physmap 6 41 42 #if __XEN_INTERFACE_VERSION__ >= 0x00030209 43 /* 44 * Maximum # bits addressable by the user of the allocated region (e.g., I/O 45 * devices often have a 32-bit limitation even in 64-bit systems). If zero 46 * then the user has no addressing restriction. This field is not used by 47 * XENMEM_decrease_reservation. 48 */ 49 #define XENMEMF_address_bits(x) (x) 50 #define XENMEMF_get_address_bits(x) ((x) & 0xffu) 51 /* NUMA node to allocate from. */ 52 #define XENMEMF_node(x) (((x) + 1) << 8) 53 #define XENMEMF_get_node(x) ((((x) >> 8) - 1) & 0xffu) 54 /* Flag to populate physmap with populate-on-demand entries */ 55 #define XENMEMF_populate_on_demand (1<<16) 56 /* Flag to request allocation only from the node specified */ 57 #define XENMEMF_exact_node_request (1<<17) 58 #define XENMEMF_exact_node(n) (XENMEMF_node(n) | XENMEMF_exact_node_request) 59 /* Flag to indicate the node specified is virtual node */ 60 #define XENMEMF_vnode (1<<18) 61 #endif 62 63 struct xen_memory_reservation { 64 65 /* 66 * XENMEM_increase_reservation: 67 * OUT: MFN (*not* GMFN) bases of extents that were allocated 68 * XENMEM_decrease_reservation: 69 * IN: GMFN bases of extents to free 70 * XENMEM_populate_physmap: 71 * IN: GPFN bases of extents to populate with memory 72 * OUT: GMFN bases of extents that were allocated 73 * (NB. This command also updates the mach_to_phys translation table) 74 * XENMEM_claim_pages: 75 * IN: must be zero 76 */ 77 XEN_GUEST_HANDLE(xen_pfn_t) extent_start; 78 79 /* Number of extents, and size/alignment of each (2^extent_order pages). */ 80 xen_ulong_t nr_extents; 81 unsigned int extent_order; 82 83 #if __XEN_INTERFACE_VERSION__ >= 0x00030209 84 /* XENMEMF flags. */ 85 unsigned int mem_flags; 86 #else 87 unsigned int address_bits; 88 #endif 89 90 /* 91 * Domain whose reservation is being changed. 92 * Unprivileged domains can specify only DOMID_SELF. 93 */ 94 domid_t domid; 95 }; 96 typedef struct xen_memory_reservation xen_memory_reservation_t; 97 DEFINE_XEN_GUEST_HANDLE(xen_memory_reservation_t); 98 99 /* 100 * An atomic exchange of memory pages. If return code is zero then 101 * @out.extent_list provides GMFNs of the newly-allocated memory. 102 * Returns zero on complete success, otherwise a negative error code. 103 * On complete success then always @nr_exchanged == @in.nr_extents. 104 * On partial success @nr_exchanged indicates how much work was done. 105 * 106 * Note that only PV guests can use this operation. 107 */ 108 #define XENMEM_exchange 11 109 struct xen_memory_exchange { 110 /* 111 * [IN] Details of memory extents to be exchanged (GMFN bases). 112 * Note that @in.address_bits is ignored and unused. 113 */ 114 struct xen_memory_reservation in; 115 116 /* 117 * [IN/OUT] Details of new memory extents. 118 * We require that: 119 * 1. @in.domid == @out.domid 120 * 2. @in.nr_extents << @in.extent_order == 121 * @out.nr_extents << @out.extent_order 122 * 3. @in.extent_start and @out.extent_start lists must not overlap 123 * 4. @out.extent_start lists GPFN bases to be populated 124 * 5. @out.extent_start is overwritten with allocated GMFN bases 125 */ 126 struct xen_memory_reservation out; 127 128 /* 129 * [OUT] Number of input extents that were successfully exchanged: 130 * 1. The first @nr_exchanged input extents were successfully 131 * deallocated. 132 * 2. The corresponding first entries in the output extent list correctly 133 * indicate the GMFNs that were successfully exchanged. 134 * 3. All other input and output extents are untouched. 135 * 4. If not all input exents are exchanged then the return code of this 136 * command will be non-zero. 137 * 5. THIS FIELD MUST BE INITIALISED TO ZERO BY THE CALLER! 138 */ 139 xen_ulong_t nr_exchanged; 140 }; 141 typedef struct xen_memory_exchange xen_memory_exchange_t; 142 DEFINE_XEN_GUEST_HANDLE(xen_memory_exchange_t); 143 144 /* 145 * Returns the maximum machine frame number of mapped RAM in this system. 146 * This command always succeeds (it never returns an error code). 147 * arg == NULL. 148 */ 149 #define XENMEM_maximum_ram_page 2 150 151 /* 152 * Returns the current or maximum memory reservation, in pages, of the 153 * specified domain (may be DOMID_SELF). Returns -ve errcode on failure. 154 * arg == addr of domid_t. 155 */ 156 #define XENMEM_current_reservation 3 157 #define XENMEM_maximum_reservation 4 158 159 /* 160 * Returns the maximum GPFN in use by the guest, or -ve errcode on failure. 161 */ 162 #define XENMEM_maximum_gpfn 14 163 164 /* 165 * Returns a list of MFN bases of 2MB extents comprising the machine_to_phys 166 * mapping table. Architectures which do not have a m2p table do not implement 167 * this command. 168 * arg == addr of xen_machphys_mfn_list_t. 169 */ 170 #define XENMEM_machphys_mfn_list 5 171 struct xen_machphys_mfn_list { 172 /* 173 * Size of the 'extent_start' array. Fewer entries will be filled if the 174 * machphys table is smaller than max_extents * 2MB. 175 */ 176 unsigned int max_extents; 177 178 /* 179 * Pointer to buffer to fill with list of extent starts. If there are 180 * any large discontiguities in the machine address space, 2MB gaps in 181 * the machphys table will be represented by an MFN base of zero. 182 */ 183 XEN_GUEST_HANDLE(xen_pfn_t) extent_start; 184 185 /* 186 * Number of extents written to the above array. This will be smaller 187 * than 'max_extents' if the machphys table is smaller than max_e * 2MB. 188 */ 189 unsigned int nr_extents; 190 }; 191 typedef struct xen_machphys_mfn_list xen_machphys_mfn_list_t; 192 DEFINE_XEN_GUEST_HANDLE(xen_machphys_mfn_list_t); 193 194 /* 195 * For a compat caller, this is identical to XENMEM_machphys_mfn_list. 196 * 197 * For a non compat caller, this functions similarly to 198 * XENMEM_machphys_mfn_list, but returns the mfns making up the compatibility 199 * m2p table. 200 */ 201 #define XENMEM_machphys_compat_mfn_list 25 202 203 /* 204 * Returns the location in virtual address space of the machine_to_phys 205 * mapping table. Architectures which do not have a m2p table, or which do not 206 * map it by default into guest address space, do not implement this command. 207 * arg == addr of xen_machphys_mapping_t. 208 */ 209 #define XENMEM_machphys_mapping 12 210 struct xen_machphys_mapping { 211 xen_ulong_t v_start, v_end; /* Start and end virtual addresses. */ 212 xen_ulong_t max_mfn; /* Maximum MFN that can be looked up. */ 213 }; 214 typedef struct xen_machphys_mapping xen_machphys_mapping_t; 215 DEFINE_XEN_GUEST_HANDLE(xen_machphys_mapping_t); 216 217 /* Source mapping space. */ 218 /* ` enum phys_map_space { */ 219 #define XENMAPSPACE_shared_info 0 /* shared info page */ 220 #define XENMAPSPACE_grant_table 1 /* grant table page */ 221 #define XENMAPSPACE_gmfn 2 /* GMFN */ 222 #define XENMAPSPACE_gmfn_range 3 /* GMFN range, XENMEM_add_to_physmap only. */ 223 #define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom, 224 * XENMEM_add_to_physmap_batch only. */ 225 #define XENMAPSPACE_dev_mmio 5 /* device mmio region 226 ARM only; the region is mapped in 227 Stage-2 using the Normal Memory 228 Inner/Outer Write-Back Cacheable 229 memory attribute. */ 230 /* ` } */ 231 232 /* 233 * Sets the GPFN at which a particular page appears in the specified guest's 234 * pseudophysical address space. 235 * arg == addr of xen_add_to_physmap_t. 236 */ 237 #define XENMEM_add_to_physmap 7 238 struct xen_add_to_physmap { 239 /* Which domain to change the mapping for. */ 240 domid_t domid; 241 242 /* Number of pages to go through for gmfn_range */ 243 uint16_t size; 244 245 unsigned int space; /* => enum phys_map_space */ 246 247 #define XENMAPIDX_grant_table_status 0x80000000 248 249 /* Index into space being mapped. */ 250 xen_ulong_t idx; 251 252 /* GPFN in domid where the source mapping page should appear. */ 253 xen_pfn_t gpfn; 254 }; 255 typedef struct xen_add_to_physmap xen_add_to_physmap_t; 256 DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_t); 257 258 /* A batched version of add_to_physmap. */ 259 #define XENMEM_add_to_physmap_batch 23 260 struct xen_add_to_physmap_batch { 261 /* IN */ 262 /* Which domain to change the mapping for. */ 263 domid_t domid; 264 uint16_t space; /* => enum phys_map_space */ 265 266 /* Number of pages to go through */ 267 uint16_t size; 268 269 #if __XEN_INTERFACE_VERSION__ < 0x00040700 270 domid_t foreign_domid; /* IFF gmfn_foreign. Should be 0 for other spaces. */ 271 #else 272 union xen_add_to_physmap_batch_extra { 273 domid_t foreign_domid; /* gmfn_foreign */ 274 uint16_t res0; /* All the other spaces. Should be 0 */ 275 } u; 276 #endif 277 278 /* Indexes into space being mapped. */ 279 XEN_GUEST_HANDLE(xen_ulong_t) idxs; 280 281 /* GPFN in domid where the source mapping page should appear. */ 282 XEN_GUEST_HANDLE(xen_pfn_t) gpfns; 283 284 /* OUT */ 285 286 /* Per index error code. */ 287 XEN_GUEST_HANDLE(int) errs; 288 }; 289 typedef struct xen_add_to_physmap_batch xen_add_to_physmap_batch_t; 290 DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_batch_t); 291 292 #if __XEN_INTERFACE_VERSION__ < 0x00040400 293 #define XENMEM_add_to_physmap_range XENMEM_add_to_physmap_batch 294 #define xen_add_to_physmap_range xen_add_to_physmap_batch 295 typedef struct xen_add_to_physmap_batch xen_add_to_physmap_range_t; 296 DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_range_t); 297 #endif 298 299 /* 300 * Unmaps the page appearing at a particular GPFN from the specified guest's 301 * pseudophysical address space. 302 * arg == addr of xen_remove_from_physmap_t. 303 */ 304 #define XENMEM_remove_from_physmap 15 305 struct xen_remove_from_physmap { 306 /* Which domain to change the mapping for. */ 307 domid_t domid; 308 309 /* GPFN of the current mapping of the page. */ 310 xen_pfn_t gpfn; 311 }; 312 typedef struct xen_remove_from_physmap xen_remove_from_physmap_t; 313 DEFINE_XEN_GUEST_HANDLE(xen_remove_from_physmap_t); 314 315 /*** REMOVED ***/ 316 /*#define XENMEM_translate_gpfn_list 8*/ 317 318 /* 319 * Returns the pseudo-physical memory map as it was when the domain 320 * was started (specified by XENMEM_set_memory_map). 321 * arg == addr of xen_memory_map_t. 322 */ 323 #define XENMEM_memory_map 9 324 struct xen_memory_map { 325 /* 326 * On call the number of entries which can be stored in buffer. On 327 * return the number of entries which have been stored in 328 * buffer. 329 */ 330 unsigned int nr_entries; 331 332 /* 333 * Entries in the buffer are in the same format as returned by the 334 * BIOS INT 0x15 EAX=0xE820 call. 335 */ 336 XEN_GUEST_HANDLE(void) buffer; 337 }; 338 typedef struct xen_memory_map xen_memory_map_t; 339 DEFINE_XEN_GUEST_HANDLE(xen_memory_map_t); 340 341 /* 342 * Returns the real physical memory map. Passes the same structure as 343 * XENMEM_memory_map. 344 * Specifying buffer as NULL will return the number of entries required 345 * to store the complete memory map. 346 * arg == addr of xen_memory_map_t. 347 */ 348 #define XENMEM_machine_memory_map 10 349 350 /* 351 * Set the pseudo-physical memory map of a domain, as returned by 352 * XENMEM_memory_map. 353 * arg == addr of xen_foreign_memory_map_t. 354 */ 355 #define XENMEM_set_memory_map 13 356 struct xen_foreign_memory_map { 357 domid_t domid; 358 struct xen_memory_map map; 359 }; 360 typedef struct xen_foreign_memory_map xen_foreign_memory_map_t; 361 DEFINE_XEN_GUEST_HANDLE(xen_foreign_memory_map_t); 362 363 #define XENMEM_set_pod_target 16 364 #define XENMEM_get_pod_target 17 365 struct xen_pod_target { 366 /* IN */ 367 uint64_t target_pages; 368 /* OUT */ 369 uint64_t tot_pages; 370 uint64_t pod_cache_pages; 371 uint64_t pod_entries; 372 /* IN */ 373 domid_t domid; 374 }; 375 typedef struct xen_pod_target xen_pod_target_t; 376 377 #if defined(__XEN__) || defined(__XEN_TOOLS__) 378 379 #ifndef uint64_aligned_t 380 #define uint64_aligned_t uint64_t 381 #endif 382 383 /* 384 * Get the number of MFNs saved through memory sharing. 385 * The call never fails. 386 */ 387 #define XENMEM_get_sharing_freed_pages 18 388 #define XENMEM_get_sharing_shared_pages 19 389 390 #define XENMEM_paging_op 20 391 #define XENMEM_paging_op_nominate 0 392 #define XENMEM_paging_op_evict 1 393 #define XENMEM_paging_op_prep 2 394 395 struct xen_mem_paging_op { 396 uint8_t op; /* XENMEM_paging_op_* */ 397 domid_t domain; 398 399 /* PAGING_PREP IN: buffer to immediately fill page in */ 400 uint64_aligned_t buffer; 401 /* Other OPs */ 402 uint64_aligned_t gfn; /* IN: gfn of page being operated on */ 403 }; 404 typedef struct xen_mem_paging_op xen_mem_paging_op_t; 405 DEFINE_XEN_GUEST_HANDLE(xen_mem_paging_op_t); 406 407 #define XENMEM_access_op 21 408 #define XENMEM_access_op_set_access 0 409 #define XENMEM_access_op_get_access 1 410 /* 411 * XENMEM_access_op_enable_emulate and XENMEM_access_op_disable_emulate are 412 * currently unused, but since they have been in use please do not reuse them. 413 * 414 * #define XENMEM_access_op_enable_emulate 2 415 * #define XENMEM_access_op_disable_emulate 3 416 */ 417 #define XENMEM_access_op_set_access_multi 4 418 419 typedef enum { 420 XENMEM_access_n, 421 XENMEM_access_r, 422 XENMEM_access_w, 423 XENMEM_access_rw, 424 XENMEM_access_x, 425 XENMEM_access_rx, 426 XENMEM_access_wx, 427 XENMEM_access_rwx, 428 /* 429 * Page starts off as r-x, but automatically 430 * change to r-w on a write 431 */ 432 XENMEM_access_rx2rw, 433 /* 434 * Log access: starts off as n, automatically 435 * goes to rwx, generating an event without 436 * pausing the vcpu 437 */ 438 XENMEM_access_n2rwx, 439 /* Take the domain default */ 440 XENMEM_access_default 441 } xenmem_access_t; 442 443 struct xen_mem_access_op { 444 /* XENMEM_access_op_* */ 445 uint8_t op; 446 /* xenmem_access_t */ 447 uint8_t access; 448 domid_t domid; 449 /* 450 * Number of pages for set op (or size of pfn_list for 451 * XENMEM_access_op_set_access_multi) 452 * Ignored on setting default access and other ops 453 */ 454 uint32_t nr; 455 /* 456 * First pfn for set op 457 * pfn for get op 458 * ~0ull is used to set and get the default access for pages 459 */ 460 uint64_aligned_t pfn; 461 /* 462 * List of pfns to set access for 463 * Used only with XENMEM_access_op_set_access_multi 464 */ 465 XEN_GUEST_HANDLE(const_uint64) pfn_list; 466 /* 467 * Corresponding list of access settings for pfn_list 468 * Used only with XENMEM_access_op_set_access_multi 469 */ 470 XEN_GUEST_HANDLE(const_uint8) access_list; 471 }; 472 typedef struct xen_mem_access_op xen_mem_access_op_t; 473 DEFINE_XEN_GUEST_HANDLE(xen_mem_access_op_t); 474 475 #define XENMEM_sharing_op 22 476 #define XENMEM_sharing_op_nominate_gfn 0 477 #define XENMEM_sharing_op_nominate_gref 1 478 #define XENMEM_sharing_op_share 2 479 #define XENMEM_sharing_op_debug_gfn 3 480 #define XENMEM_sharing_op_debug_mfn 4 481 #define XENMEM_sharing_op_debug_gref 5 482 #define XENMEM_sharing_op_add_physmap 6 483 #define XENMEM_sharing_op_audit 7 484 #define XENMEM_sharing_op_range_share 8 485 486 #define XENMEM_SHARING_OP_S_HANDLE_INVALID (-10) 487 #define XENMEM_SHARING_OP_C_HANDLE_INVALID (-9) 488 489 /* The following allows sharing of grant refs. This is useful 490 * for sharing utilities sitting as "filters" in IO backends 491 * (e.g. memshr + blktap(2)). The IO backend is only exposed 492 * to grant references, and this allows sharing of the grefs */ 493 #define XENMEM_SHARING_OP_FIELD_IS_GREF_FLAG (xen_mk_ullong(1) << 62) 494 495 #define XENMEM_SHARING_OP_FIELD_MAKE_GREF(field, val) \ 496 (field) = (XENMEM_SHARING_OP_FIELD_IS_GREF_FLAG | val) 497 #define XENMEM_SHARING_OP_FIELD_IS_GREF(field) \ 498 ((field) & XENMEM_SHARING_OP_FIELD_IS_GREF_FLAG) 499 #define XENMEM_SHARING_OP_FIELD_GET_GREF(field) \ 500 ((field) & (~XENMEM_SHARING_OP_FIELD_IS_GREF_FLAG)) 501 502 struct xen_mem_sharing_op { 503 uint8_t op; /* XENMEM_sharing_op_* */ 504 domid_t domain; 505 506 union { 507 struct mem_sharing_op_nominate { /* OP_NOMINATE_xxx */ 508 union { 509 uint64_aligned_t gfn; /* IN: gfn to nominate */ 510 uint32_t grant_ref; /* IN: grant ref to nominate */ 511 } u; 512 uint64_aligned_t handle; /* OUT: the handle */ 513 } nominate; 514 struct mem_sharing_op_share { /* OP_SHARE/ADD_PHYSMAP */ 515 uint64_aligned_t source_gfn; /* IN: the gfn of the source page */ 516 uint64_aligned_t source_handle; /* IN: handle to the source page */ 517 uint64_aligned_t client_gfn; /* IN: the client gfn */ 518 uint64_aligned_t client_handle; /* IN: handle to the client page */ 519 domid_t client_domain; /* IN: the client domain id */ 520 } share; 521 struct mem_sharing_op_range { /* OP_RANGE_SHARE */ 522 uint64_aligned_t first_gfn; /* IN: the first gfn */ 523 uint64_aligned_t last_gfn; /* IN: the last gfn */ 524 uint64_aligned_t opaque; /* Must be set to 0 */ 525 domid_t client_domain; /* IN: the client domain id */ 526 uint16_t _pad[3]; /* Must be set to 0 */ 527 } range; 528 struct mem_sharing_op_debug { /* OP_DEBUG_xxx */ 529 union { 530 uint64_aligned_t gfn; /* IN: gfn to debug */ 531 uint64_aligned_t mfn; /* IN: mfn to debug */ 532 uint32_t gref; /* IN: gref to debug */ 533 } u; 534 } debug; 535 } u; 536 }; 537 typedef struct xen_mem_sharing_op xen_mem_sharing_op_t; 538 DEFINE_XEN_GUEST_HANDLE(xen_mem_sharing_op_t); 539 540 /* 541 * Attempt to stake a claim for a domain on a quantity of pages 542 * of system RAM, but _not_ assign specific pageframes. Only 543 * arithmetic is performed so the hypercall is very fast and need 544 * not be preemptible, thus sidestepping time-of-check-time-of-use 545 * races for memory allocation. Returns 0 if the hypervisor page 546 * allocator has atomically and successfully claimed the requested 547 * number of pages, else non-zero. 548 * 549 * Any domain may have only one active claim. When sufficient memory 550 * has been allocated to resolve the claim, the claim silently expires. 551 * Claiming zero pages effectively resets any outstanding claim and 552 * is always successful. 553 * 554 * Note that a valid claim may be staked even after memory has been 555 * allocated for a domain. In this case, the claim is not incremental, 556 * i.e. if the domain's tot_pages is 3, and a claim is staked for 10, 557 * only 7 additional pages are claimed. 558 * 559 * Caller must be privileged or the hypercall fails. 560 */ 561 #define XENMEM_claim_pages 24 562 563 /* 564 * XENMEM_claim_pages flags - the are no flags at this time. 565 * The zero value is appropriate. 566 */ 567 568 /* 569 * With some legacy devices, certain guest-physical addresses cannot safely 570 * be used for other purposes, e.g. to map guest RAM. This hypercall 571 * enumerates those regions so the toolstack can avoid using them. 572 */ 573 #define XENMEM_reserved_device_memory_map 27 574 struct xen_reserved_device_memory { 575 xen_pfn_t start_pfn; 576 xen_ulong_t nr_pages; 577 }; 578 typedef struct xen_reserved_device_memory xen_reserved_device_memory_t; 579 DEFINE_XEN_GUEST_HANDLE(xen_reserved_device_memory_t); 580 581 struct xen_reserved_device_memory_map { 582 #define XENMEM_RDM_ALL 1 /* Request all regions (ignore dev union). */ 583 /* IN */ 584 uint32_t flags; 585 /* 586 * IN/OUT 587 * 588 * Gets set to the required number of entries when too low, 589 * signaled by error code -ERANGE. 590 */ 591 unsigned int nr_entries; 592 /* OUT */ 593 XEN_GUEST_HANDLE(xen_reserved_device_memory_t) buffer; 594 /* IN */ 595 union { 596 struct physdev_pci_device pci; 597 } dev; 598 }; 599 typedef struct xen_reserved_device_memory_map xen_reserved_device_memory_map_t; 600 DEFINE_XEN_GUEST_HANDLE(xen_reserved_device_memory_map_t); 601 602 #endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */ 603 604 /* 605 * XENMEM_get_vnumainfo used by guest to get 606 * vNUMA topology from hypervisor. 607 */ 608 #define XENMEM_get_vnumainfo 26 609 610 /* vNUMA node memory ranges */ 611 struct xen_vmemrange { 612 uint64_t start, end; 613 unsigned int flags; 614 unsigned int nid; 615 }; 616 typedef struct xen_vmemrange xen_vmemrange_t; 617 DEFINE_XEN_GUEST_HANDLE(xen_vmemrange_t); 618 619 /* 620 * vNUMA topology specifies vNUMA node number, distance table, 621 * memory ranges and vcpu mapping provided for guests. 622 * XENMEM_get_vnumainfo hypercall expects to see from guest 623 * nr_vnodes, nr_vmemranges and nr_vcpus to indicate available memory. 624 * After filling guests structures, nr_vnodes, nr_vmemranges and nr_vcpus 625 * copied back to guest. Domain returns expected values of nr_vnodes, 626 * nr_vmemranges and nr_vcpus to guest if the values where incorrect. 627 */ 628 struct xen_vnuma_topology_info { 629 /* IN */ 630 domid_t domid; 631 uint16_t pad; 632 /* IN/OUT */ 633 unsigned int nr_vnodes; 634 unsigned int nr_vcpus; 635 unsigned int nr_vmemranges; 636 /* OUT */ 637 union { 638 XEN_GUEST_HANDLE(uint) h; 639 uint64_t pad; 640 } vdistance; 641 union { 642 XEN_GUEST_HANDLE(uint) h; 643 uint64_t pad; 644 } vcpu_to_vnode; 645 union { 646 XEN_GUEST_HANDLE(xen_vmemrange_t) h; 647 uint64_t pad; 648 } vmemrange; 649 }; 650 typedef struct xen_vnuma_topology_info xen_vnuma_topology_info_t; 651 DEFINE_XEN_GUEST_HANDLE(xen_vnuma_topology_info_t); 652 653 /* Next available subop number is 28 */ 654 655 #endif /* __XEN_PUBLIC_MEMORY_H__ */ 656 657 /* 658 * Local variables: 659 * mode: C 660 * c-file-style: "BSD" 661 * c-basic-offset: 4 662 * tab-width: 4 663 * indent-tabs-mode: nil 664 * End: 665 */ 666