1 /* 2 * Copyright (C) 2010 Citrix Ltd. 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2. See 5 * the COPYING file in the top-level directory. 6 * 7 * Contributions after 2012-01-13 are licensed under the terms of the 8 * GNU GPL, version 2 or (at your option) any later version. 9 */ 10 11 #include "qemu/osdep.h" 12 #include "qemu/units.h" 13 #include "qapi/error.h" 14 #include "qapi/qapi-commands-migration.h" 15 #include "trace.h" 16 17 #include "hw/i386/pc.h" 18 #include "hw/irq.h" 19 #include "hw/i386/apic-msidef.h" 20 #include "hw/xen/xen-x86.h" 21 #include "qemu/range.h" 22 23 #include "hw/xen/xen-hvm-common.h" 24 #include "hw/xen/arch_hvm.h" 25 #include <xen/hvm/e820.h> 26 #include "exec/target_page.h" 27 28 static MemoryRegion ram_640k, ram_lo, ram_hi; 29 static MemoryRegion *framebuffer; 30 static bool xen_in_migration; 31 32 /* Compatibility with older version */ 33 34 /* 35 * This allows QEMU to build on a system that has Xen 4.5 or earlier installed. 36 * This is here (not in hw/xen/xen_native.h) because xen/hvm/ioreq.h needs to 37 * be included before this block and hw/xen/xen_native.h needs to be included 38 * before xen/hvm/ioreq.h 39 */ 40 #ifndef IOREQ_TYPE_VMWARE_PORT 41 #define IOREQ_TYPE_VMWARE_PORT 3 42 struct vmware_regs { 43 uint32_t esi; 44 uint32_t edi; 45 uint32_t ebx; 46 uint32_t ecx; 47 uint32_t edx; 48 }; 49 typedef struct vmware_regs vmware_regs_t; 50 51 struct shared_vmport_iopage { 52 struct vmware_regs vcpu_vmport_regs[1]; 53 }; 54 typedef struct shared_vmport_iopage shared_vmport_iopage_t; 55 #endif 56 57 static shared_vmport_iopage_t *shared_vmport_page; 58 59 static QLIST_HEAD(, XenPhysmap) xen_physmap; 60 static const XenPhysmap *log_for_dirtybit; 61 /* Buffer used by xen_sync_dirty_bitmap */ 62 static unsigned long *dirty_bitmap; 63 static Notifier suspend; 64 static Notifier wakeup; 65 66 /* Xen specific function for piix pci */ 67 68 int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) 69 { 70 return irq_num + (PCI_SLOT(pci_dev->devfn) << 2); 71 } 72 73 void xen_intx_set_irq(void *opaque, int irq_num, int level) 74 { 75 xen_set_pci_intx_level(xen_domid, 0, 0, irq_num >> 2, 76 irq_num & 3, level); 77 } 78 79 int xen_set_pci_link_route(uint8_t link, uint8_t irq) 80 { 81 return xendevicemodel_set_pci_link_route(xen_dmod, xen_domid, link, irq); 82 } 83 84 int xen_is_pirq_msi(uint32_t msi_data) 85 { 86 /* If vector is 0, the msi is remapped into a pirq, passed as 87 * dest_id. 88 */ 89 return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0; 90 } 91 92 void xen_hvm_inject_msi(uint64_t addr, uint32_t data) 93 { 94 xen_inject_msi(xen_domid, addr, data); 95 } 96 97 static void xen_suspend_notifier(Notifier *notifier, void *data) 98 { 99 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); 100 } 101 102 /* Xen Interrupt Controller */ 103 104 static void xen_set_irq(void *opaque, int irq, int level) 105 { 106 xen_set_isa_irq_level(xen_domid, irq, level); 107 } 108 109 qemu_irq *xen_interrupt_controller_init(void) 110 { 111 return qemu_allocate_irqs(xen_set_irq, NULL, 16); 112 } 113 114 /* Memory Ops */ 115 116 static void xen_ram_init(PCMachineState *pcms, 117 ram_addr_t ram_size, MemoryRegion **ram_memory_p) 118 { 119 X86MachineState *x86ms = X86_MACHINE(pcms); 120 MemoryRegion *sysmem = get_system_memory(); 121 ram_addr_t block_len; 122 uint64_t user_lowmem = 123 object_property_get_uint(qdev_get_machine(), 124 PC_MACHINE_MAX_RAM_BELOW_4G, 125 &error_abort); 126 127 /* Handle the machine opt max-ram-below-4g. It is basically doing 128 * min(xen limit, user limit). 129 */ 130 if (!user_lowmem) { 131 user_lowmem = HVM_BELOW_4G_RAM_END; /* default */ 132 } 133 if (HVM_BELOW_4G_RAM_END <= user_lowmem) { 134 user_lowmem = HVM_BELOW_4G_RAM_END; 135 } 136 137 if (ram_size >= user_lowmem) { 138 x86ms->above_4g_mem_size = ram_size - user_lowmem; 139 x86ms->below_4g_mem_size = user_lowmem; 140 } else { 141 x86ms->above_4g_mem_size = 0; 142 x86ms->below_4g_mem_size = ram_size; 143 } 144 if (!x86ms->above_4g_mem_size) { 145 block_len = ram_size; 146 } else { 147 /* 148 * Xen does not allocate the memory continuously, it keeps a 149 * hole of the size computed above or passed in. 150 */ 151 block_len = (4 * GiB) + x86ms->above_4g_mem_size; 152 } 153 memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len, 154 &error_fatal); 155 *ram_memory_p = &xen_memory; 156 157 memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k", 158 &xen_memory, 0, 0xa0000); 159 memory_region_add_subregion(sysmem, 0, &ram_640k); 160 /* Skip of the VGA IO memory space, it will be registered later by the VGA 161 * emulated device. 162 * 163 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load 164 * the Options ROM, so it is registered here as RAM. 165 */ 166 memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", 167 &xen_memory, 0xc0000, 168 x86ms->below_4g_mem_size - 0xc0000); 169 memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); 170 if (x86ms->above_4g_mem_size > 0) { 171 memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", 172 &xen_memory, 0x100000000ULL, 173 x86ms->above_4g_mem_size); 174 memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); 175 } 176 } 177 178 static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size, 179 int page_mask) 180 { 181 XenPhysmap *physmap = NULL; 182 183 start_addr &= page_mask; 184 185 QLIST_FOREACH(physmap, &xen_physmap, list) { 186 if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) { 187 return physmap; 188 } 189 } 190 return NULL; 191 } 192 193 static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size, 194 int page_mask) 195 { 196 hwaddr addr = phys_offset & page_mask; 197 XenPhysmap *physmap = NULL; 198 199 QLIST_FOREACH(physmap, &xen_physmap, list) { 200 if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) { 201 return physmap->start_addr + (phys_offset - physmap->phys_offset); 202 } 203 } 204 205 return phys_offset; 206 } 207 208 #ifdef XEN_COMPAT_PHYSMAP 209 static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap) 210 { 211 char path[80], value[17]; 212 213 snprintf(path, sizeof(path), 214 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr", 215 xen_domid, (uint64_t)physmap->phys_offset); 216 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->start_addr); 217 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { 218 return -1; 219 } 220 snprintf(path, sizeof(path), 221 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size", 222 xen_domid, (uint64_t)physmap->phys_offset); 223 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->size); 224 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { 225 return -1; 226 } 227 if (physmap->name) { 228 snprintf(path, sizeof(path), 229 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name", 230 xen_domid, (uint64_t)physmap->phys_offset); 231 if (!xs_write(state->xenstore, 0, path, 232 physmap->name, strlen(physmap->name))) { 233 return -1; 234 } 235 } 236 return 0; 237 } 238 #else 239 static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap) 240 { 241 return 0; 242 } 243 #endif 244 245 static int xen_add_to_physmap(XenIOState *state, 246 hwaddr start_addr, 247 ram_addr_t size, 248 MemoryRegion *mr, 249 hwaddr offset_within_region) 250 { 251 unsigned target_page_bits = qemu_target_page_bits(); 252 int page_size = qemu_target_page_size(); 253 int page_mask = -page_size; 254 unsigned long nr_pages; 255 int rc = 0; 256 XenPhysmap *physmap = NULL; 257 hwaddr pfn, start_gpfn; 258 hwaddr phys_offset = memory_region_get_ram_addr(mr); 259 const char *mr_name; 260 261 if (get_physmapping(start_addr, size, page_mask)) { 262 return 0; 263 } 264 if (size <= 0) { 265 return -1; 266 } 267 268 /* Xen can only handle a single dirty log region for now and we want 269 * the linear framebuffer to be that region. 270 * Avoid tracking any regions that is not videoram and avoid tracking 271 * the legacy vga region. */ 272 if (mr == framebuffer && start_addr > 0xbffff) { 273 goto go_physmap; 274 } 275 return -1; 276 277 go_physmap: 278 DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n", 279 start_addr, start_addr + size); 280 281 mr_name = memory_region_name(mr); 282 283 physmap = g_new(XenPhysmap, 1); 284 285 physmap->start_addr = start_addr; 286 physmap->size = size; 287 physmap->name = mr_name; 288 physmap->phys_offset = phys_offset; 289 290 QLIST_INSERT_HEAD(&xen_physmap, physmap, list); 291 292 if (runstate_check(RUN_STATE_INMIGRATE)) { 293 /* Now when we have a physmap entry we can replace a dummy mapping with 294 * a real one of guest foreign memory. */ 295 uint8_t *p = xen_replace_cache_entry(phys_offset, start_addr, size); 296 assert(p && p == memory_region_get_ram_ptr(mr)); 297 298 return 0; 299 } 300 301 pfn = phys_offset >> target_page_bits; 302 start_gpfn = start_addr >> target_page_bits; 303 nr_pages = size >> target_page_bits; 304 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, nr_pages, pfn, 305 start_gpfn); 306 if (rc) { 307 int saved_errno = errno; 308 309 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx 310 " to GFN %"HWADDR_PRIx" failed: %s", 311 nr_pages, pfn, start_gpfn, strerror(saved_errno)); 312 errno = saved_errno; 313 return -1; 314 } 315 316 rc = xendevicemodel_pin_memory_cacheattr(xen_dmod, xen_domid, 317 start_addr >> target_page_bits, 318 (start_addr + size - 1) >> target_page_bits, 319 XEN_DOMCTL_MEM_CACHEATTR_WB); 320 if (rc) { 321 error_report("pin_memory_cacheattr failed: %s", strerror(errno)); 322 } 323 return xen_save_physmap(state, physmap); 324 } 325 326 static int xen_remove_from_physmap(XenIOState *state, 327 hwaddr start_addr, 328 ram_addr_t size) 329 { 330 unsigned target_page_bits = qemu_target_page_bits(); 331 int page_size = qemu_target_page_size(); 332 int page_mask = -page_size; 333 int rc = 0; 334 XenPhysmap *physmap = NULL; 335 hwaddr phys_offset = 0; 336 337 physmap = get_physmapping(start_addr, size, page_mask); 338 if (physmap == NULL) { 339 return -1; 340 } 341 342 phys_offset = physmap->phys_offset; 343 size = physmap->size; 344 345 DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at " 346 "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset); 347 348 size >>= target_page_bits; 349 start_addr >>= target_page_bits; 350 phys_offset >>= target_page_bits; 351 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, size, start_addr, 352 phys_offset); 353 if (rc) { 354 int saved_errno = errno; 355 356 error_report("relocate_memory "RAM_ADDR_FMT" pages" 357 " from GFN %"HWADDR_PRIx 358 " to GFN %"HWADDR_PRIx" failed: %s", 359 size, start_addr, phys_offset, strerror(saved_errno)); 360 errno = saved_errno; 361 return -1; 362 } 363 364 QLIST_REMOVE(physmap, list); 365 if (log_for_dirtybit == physmap) { 366 log_for_dirtybit = NULL; 367 g_free(dirty_bitmap); 368 dirty_bitmap = NULL; 369 } 370 g_free(physmap); 371 372 return 0; 373 } 374 375 static void xen_sync_dirty_bitmap(XenIOState *state, 376 hwaddr start_addr, 377 ram_addr_t size) 378 { 379 unsigned target_page_bits = qemu_target_page_bits(); 380 int page_size = qemu_target_page_size(); 381 int page_mask = -page_size; 382 hwaddr npages = size >> target_page_bits; 383 const int width = sizeof(unsigned long) * 8; 384 size_t bitmap_size = DIV_ROUND_UP(npages, width); 385 int rc, i, j; 386 const XenPhysmap *physmap = NULL; 387 388 physmap = get_physmapping(start_addr, size, page_mask); 389 if (physmap == NULL) { 390 /* not handled */ 391 return; 392 } 393 394 if (log_for_dirtybit == NULL) { 395 log_for_dirtybit = physmap; 396 dirty_bitmap = g_new(unsigned long, bitmap_size); 397 } else if (log_for_dirtybit != physmap) { 398 /* Only one range for dirty bitmap can be tracked. */ 399 return; 400 } 401 402 rc = xen_track_dirty_vram(xen_domid, start_addr >> target_page_bits, 403 npages, dirty_bitmap); 404 if (rc < 0) { 405 #ifndef ENODATA 406 #define ENODATA ENOENT 407 #endif 408 if (errno == ENODATA) { 409 memory_region_set_dirty(framebuffer, 0, size); 410 DPRINTF("xen: track_dirty_vram failed (0x" HWADDR_FMT_plx 411 ", 0x" HWADDR_FMT_plx "): %s\n", 412 start_addr, start_addr + size, strerror(errno)); 413 } 414 return; 415 } 416 417 for (i = 0; i < bitmap_size; i++) { 418 unsigned long map = dirty_bitmap[i]; 419 while (map != 0) { 420 j = ctzl(map); 421 map &= ~(1ul << j); 422 memory_region_set_dirty(framebuffer, 423 (i * width + j) * page_size, page_size); 424 }; 425 } 426 } 427 428 static void xen_log_start(MemoryListener *listener, 429 MemoryRegionSection *section, 430 int old, int new) 431 { 432 XenIOState *state = container_of(listener, XenIOState, memory_listener); 433 434 if (new & ~old & (1 << DIRTY_MEMORY_VGA)) { 435 xen_sync_dirty_bitmap(state, section->offset_within_address_space, 436 int128_get64(section->size)); 437 } 438 } 439 440 static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section, 441 int old, int new) 442 { 443 if (old & ~new & (1 << DIRTY_MEMORY_VGA)) { 444 log_for_dirtybit = NULL; 445 g_free(dirty_bitmap); 446 dirty_bitmap = NULL; 447 /* Disable dirty bit tracking */ 448 xen_track_dirty_vram(xen_domid, 0, 0, NULL); 449 } 450 } 451 452 static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) 453 { 454 XenIOState *state = container_of(listener, XenIOState, memory_listener); 455 456 xen_sync_dirty_bitmap(state, section->offset_within_address_space, 457 int128_get64(section->size)); 458 } 459 460 static bool xen_log_global_start(MemoryListener *listener, Error **errp) 461 { 462 if (xen_enabled()) { 463 xen_in_migration = true; 464 } 465 return true; 466 } 467 468 static void xen_log_global_stop(MemoryListener *listener) 469 { 470 xen_in_migration = false; 471 } 472 473 static const MemoryListener xen_memory_listener = { 474 .name = "xen-memory", 475 .region_add = xen_region_add, 476 .region_del = xen_region_del, 477 .log_start = xen_log_start, 478 .log_stop = xen_log_stop, 479 .log_sync = xen_log_sync, 480 .log_global_start = xen_log_global_start, 481 .log_global_stop = xen_log_global_stop, 482 .priority = MEMORY_LISTENER_PRIORITY_ACCEL, 483 }; 484 485 static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req) 486 { 487 X86CPU *cpu; 488 CPUX86State *env; 489 490 cpu = X86_CPU(current_cpu); 491 env = &cpu->env; 492 env->regs[R_EAX] = req->data; 493 env->regs[R_EBX] = vmport_regs->ebx; 494 env->regs[R_ECX] = vmport_regs->ecx; 495 env->regs[R_EDX] = vmport_regs->edx; 496 env->regs[R_ESI] = vmport_regs->esi; 497 env->regs[R_EDI] = vmport_regs->edi; 498 } 499 500 static void regs_from_cpu(vmware_regs_t *vmport_regs) 501 { 502 X86CPU *cpu = X86_CPU(current_cpu); 503 CPUX86State *env = &cpu->env; 504 505 vmport_regs->ebx = env->regs[R_EBX]; 506 vmport_regs->ecx = env->regs[R_ECX]; 507 vmport_regs->edx = env->regs[R_EDX]; 508 vmport_regs->esi = env->regs[R_ESI]; 509 vmport_regs->edi = env->regs[R_EDI]; 510 } 511 512 static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req) 513 { 514 vmware_regs_t *vmport_regs; 515 516 assert(shared_vmport_page); 517 vmport_regs = 518 &shared_vmport_page->vcpu_vmport_regs[state->send_vcpu]; 519 QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs)); 520 521 current_cpu = state->cpu_by_vcpu_id[state->send_vcpu]; 522 regs_to_cpu(vmport_regs, req); 523 cpu_ioreq_pio(req); 524 regs_from_cpu(vmport_regs); 525 current_cpu = NULL; 526 } 527 528 #ifdef XEN_COMPAT_PHYSMAP 529 static void xen_read_physmap(XenIOState *state) 530 { 531 XenPhysmap *physmap = NULL; 532 unsigned int len, num, i; 533 char path[80], *value = NULL; 534 char **entries = NULL; 535 536 snprintf(path, sizeof(path), 537 "/local/domain/0/device-model/%d/physmap", xen_domid); 538 entries = xs_directory(state->xenstore, 0, path, &num); 539 if (entries == NULL) 540 return; 541 542 for (i = 0; i < num; i++) { 543 physmap = g_new(XenPhysmap, 1); 544 physmap->phys_offset = strtoull(entries[i], NULL, 16); 545 snprintf(path, sizeof(path), 546 "/local/domain/0/device-model/%d/physmap/%s/start_addr", 547 xen_domid, entries[i]); 548 value = xs_read(state->xenstore, 0, path, &len); 549 if (value == NULL) { 550 g_free(physmap); 551 continue; 552 } 553 physmap->start_addr = strtoull(value, NULL, 16); 554 free(value); 555 556 snprintf(path, sizeof(path), 557 "/local/domain/0/device-model/%d/physmap/%s/size", 558 xen_domid, entries[i]); 559 value = xs_read(state->xenstore, 0, path, &len); 560 if (value == NULL) { 561 g_free(physmap); 562 continue; 563 } 564 physmap->size = strtoull(value, NULL, 16); 565 free(value); 566 567 snprintf(path, sizeof(path), 568 "/local/domain/0/device-model/%d/physmap/%s/name", 569 xen_domid, entries[i]); 570 physmap->name = xs_read(state->xenstore, 0, path, &len); 571 572 QLIST_INSERT_HEAD(&xen_physmap, physmap, list); 573 } 574 free(entries); 575 } 576 #else 577 static void xen_read_physmap(XenIOState *state) 578 { 579 } 580 #endif 581 582 static void xen_wakeup_notifier(Notifier *notifier, void *data) 583 { 584 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0); 585 } 586 587 void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory) 588 { 589 MachineState *ms = MACHINE(pcms); 590 unsigned int max_cpus = ms->smp.max_cpus; 591 int rc; 592 xen_pfn_t ioreq_pfn; 593 XenIOState *state; 594 595 state = g_new0(XenIOState, 1); 596 597 xen_register_ioreq(state, max_cpus, &xen_memory_listener); 598 599 QLIST_INIT(&xen_physmap); 600 xen_read_physmap(state); 601 602 suspend.notify = xen_suspend_notifier; 603 qemu_register_suspend_notifier(&suspend); 604 605 wakeup.notify = xen_wakeup_notifier; 606 qemu_register_wakeup_notifier(&wakeup); 607 608 rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn); 609 if (!rc) { 610 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn); 611 shared_vmport_page = 612 xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE, 613 1, &ioreq_pfn, NULL); 614 if (shared_vmport_page == NULL) { 615 error_report("map shared vmport IO page returned error %d handle=%p", 616 errno, xen_xc); 617 goto err; 618 } 619 } else if (rc != -ENOSYS) { 620 error_report("get vmport regs pfn returned error %d, rc=%d", 621 errno, rc); 622 goto err; 623 } 624 625 xen_ram_init(pcms, ms->ram_size, ram_memory); 626 627 /* Disable ACPI build because Xen handles it */ 628 pcms->acpi_build_enabled = false; 629 630 return; 631 632 err: 633 error_report("xen hardware virtual machine initialisation failed"); 634 exit(1); 635 } 636 637 void xen_register_framebuffer(MemoryRegion *mr) 638 { 639 framebuffer = mr; 640 } 641 642 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length) 643 { 644 unsigned target_page_bits = qemu_target_page_bits(); 645 int page_size = qemu_target_page_size(); 646 int page_mask = -page_size; 647 648 if (unlikely(xen_in_migration)) { 649 int rc; 650 ram_addr_t start_pfn, nb_pages; 651 652 start = xen_phys_offset_to_gaddr(start, length, page_mask); 653 654 if (length == 0) { 655 length = page_size; 656 } 657 start_pfn = start >> target_page_bits; 658 nb_pages = ((start + length + page_size - 1) >> target_page_bits) 659 - start_pfn; 660 rc = xen_modified_memory(xen_domid, start_pfn, nb_pages); 661 if (rc) { 662 fprintf(stderr, 663 "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n", 664 __func__, start, nb_pages, errno, strerror(errno)); 665 } 666 } 667 } 668 669 void qmp_xen_set_global_dirty_log(bool enable, Error **errp) 670 { 671 if (enable) { 672 memory_global_dirty_log_start(GLOBAL_DIRTY_MIGRATION, errp); 673 } else { 674 memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION); 675 } 676 } 677 678 void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section, 679 bool add) 680 { 681 unsigned target_page_bits = qemu_target_page_bits(); 682 int page_size = qemu_target_page_size(); 683 int page_mask = -page_size; 684 hwaddr start_addr = section->offset_within_address_space; 685 ram_addr_t size = int128_get64(section->size); 686 bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA); 687 hvmmem_type_t mem_type; 688 689 if (!memory_region_is_ram(section->mr)) { 690 return; 691 } 692 693 if (log_dirty != add) { 694 return; 695 } 696 697 trace_xen_client_set_memory(start_addr, size, log_dirty); 698 699 start_addr &= page_mask; 700 size = ROUND_UP(size, page_size); 701 702 if (add) { 703 if (!memory_region_is_rom(section->mr)) { 704 xen_add_to_physmap(state, start_addr, size, 705 section->mr, section->offset_within_region); 706 } else { 707 mem_type = HVMMEM_ram_ro; 708 if (xen_set_mem_type(xen_domid, mem_type, 709 start_addr >> target_page_bits, 710 size >> target_page_bits)) { 711 DPRINTF("xen_set_mem_type error, addr: "HWADDR_FMT_plx"\n", 712 start_addr); 713 } 714 } 715 } else { 716 if (xen_remove_from_physmap(state, start_addr, size) < 0) { 717 DPRINTF("physmapping does not exist at "HWADDR_FMT_plx"\n", start_addr); 718 } 719 } 720 } 721 722 void arch_handle_ioreq(XenIOState *state, ioreq_t *req) 723 { 724 switch (req->type) { 725 case IOREQ_TYPE_VMWARE_PORT: 726 handle_vmport_ioreq(state, req); 727 break; 728 default: 729 hw_error("Invalid ioreq type 0x%x\n", req->type); 730 } 731 732 return; 733 } 734