| /* |
| * Copyright (C) 2010 Citrix Ltd. |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2. See |
| * the COPYING file in the top-level directory. |
| * |
| * Contributions after 2012-01-13 are licensed under the terms of the |
| * GNU GPL, version 2 or (at your option) any later version. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qapi/error.h" |
| #include "qapi/qapi-commands-migration.h" |
| #include "trace.h" |
| |
| #include "hw/i386/pc.h" |
| #include "hw/irq.h" |
| #include "hw/i386/apic-msidef.h" |
| #include "hw/xen/xen-x86.h" |
| #include "qemu/range.h" |
| |
| #include "hw/xen/xen-hvm-common.h" |
| #include "hw/xen/arch_hvm.h" |
| #include <xen/hvm/e820.h> |
| #include "exec/target_page.h" |
| |
| static MemoryRegion ram_640k, ram_lo, ram_hi; |
| static MemoryRegion *framebuffer; |
| static bool xen_in_migration; |
| |
| /* Compatibility with older version */ |
| |
| /* |
| * This allows QEMU to build on a system that has Xen 4.5 or earlier installed. |
| * This is here (not in hw/xen/xen_native.h) because xen/hvm/ioreq.h needs to |
| * be included before this block and hw/xen/xen_native.h needs to be included |
| * before xen/hvm/ioreq.h |
| */ |
| #ifndef IOREQ_TYPE_VMWARE_PORT |
| #define IOREQ_TYPE_VMWARE_PORT 3 |
| struct vmware_regs { |
| uint32_t esi; |
| uint32_t edi; |
| uint32_t ebx; |
| uint32_t ecx; |
| uint32_t edx; |
| }; |
| typedef struct vmware_regs vmware_regs_t; |
| |
| struct shared_vmport_iopage { |
| struct vmware_regs vcpu_vmport_regs[1]; |
| }; |
| typedef struct shared_vmport_iopage shared_vmport_iopage_t; |
| #endif |
| |
| static shared_vmport_iopage_t *shared_vmport_page; |
| |
| static QLIST_HEAD(, XenPhysmap) xen_physmap; |
| static const XenPhysmap *log_for_dirtybit; |
| /* Buffer used by xen_sync_dirty_bitmap */ |
| static unsigned long *dirty_bitmap; |
| static Notifier suspend; |
| static Notifier wakeup; |
| |
| /* Xen specific function for piix pci */ |
| |
| int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) |
| { |
| return irq_num + (PCI_SLOT(pci_dev->devfn) << 2); |
| } |
| |
| void xen_intx_set_irq(void *opaque, int irq_num, int level) |
| { |
| xen_set_pci_intx_level(xen_domid, 0, 0, irq_num >> 2, |
| irq_num & 3, level); |
| } |
| |
| int xen_set_pci_link_route(uint8_t link, uint8_t irq) |
| { |
| return xendevicemodel_set_pci_link_route(xen_dmod, xen_domid, link, irq); |
| } |
| |
| int xen_is_pirq_msi(uint32_t msi_data) |
| { |
| /* If vector is 0, the msi is remapped into a pirq, passed as |
| * dest_id. |
| */ |
| return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0; |
| } |
| |
| void xen_hvm_inject_msi(uint64_t addr, uint32_t data) |
| { |
| xen_inject_msi(xen_domid, addr, data); |
| } |
| |
| static void xen_suspend_notifier(Notifier *notifier, void *data) |
| { |
| xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); |
| } |
| |
| /* Xen Interrupt Controller */ |
| |
| static void xen_set_irq(void *opaque, int irq, int level) |
| { |
| xen_set_isa_irq_level(xen_domid, irq, level); |
| } |
| |
| qemu_irq *xen_interrupt_controller_init(void) |
| { |
| return qemu_allocate_irqs(xen_set_irq, NULL, 16); |
| } |
| |
| /* Memory Ops */ |
| |
| static void xen_ram_init(PCMachineState *pcms, |
| ram_addr_t ram_size, MemoryRegion **ram_memory_p) |
| { |
| X86MachineState *x86ms = X86_MACHINE(pcms); |
| MemoryRegion *sysmem = get_system_memory(); |
| ram_addr_t block_len; |
| uint64_t user_lowmem = |
| object_property_get_uint(qdev_get_machine(), |
| PC_MACHINE_MAX_RAM_BELOW_4G, |
| &error_abort); |
| |
| /* Handle the machine opt max-ram-below-4g. It is basically doing |
| * min(xen limit, user limit). |
| */ |
| if (!user_lowmem) { |
| user_lowmem = HVM_BELOW_4G_RAM_END; /* default */ |
| } |
| if (HVM_BELOW_4G_RAM_END <= user_lowmem) { |
| user_lowmem = HVM_BELOW_4G_RAM_END; |
| } |
| |
| if (ram_size >= user_lowmem) { |
| x86ms->above_4g_mem_size = ram_size - user_lowmem; |
| x86ms->below_4g_mem_size = user_lowmem; |
| } else { |
| x86ms->above_4g_mem_size = 0; |
| x86ms->below_4g_mem_size = ram_size; |
| } |
| if (!x86ms->above_4g_mem_size) { |
| block_len = ram_size; |
| } else { |
| /* |
| * Xen does not allocate the memory continuously, it keeps a |
| * hole of the size computed above or passed in. |
| */ |
| block_len = (4 * GiB) + x86ms->above_4g_mem_size; |
| } |
| memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len, |
| &error_fatal); |
| *ram_memory_p = &xen_memory; |
| |
| memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k", |
| &xen_memory, 0, 0xa0000); |
| memory_region_add_subregion(sysmem, 0, &ram_640k); |
| /* Skip of the VGA IO memory space, it will be registered later by the VGA |
| * emulated device. |
| * |
| * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load |
| * the Options ROM, so it is registered here as RAM. |
| */ |
| memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", |
| &xen_memory, 0xc0000, |
| x86ms->below_4g_mem_size - 0xc0000); |
| memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); |
| if (x86ms->above_4g_mem_size > 0) { |
| memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", |
| &xen_memory, 0x100000000ULL, |
| x86ms->above_4g_mem_size); |
| memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); |
| } |
| } |
| |
| static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size, |
| int page_mask) |
| { |
| XenPhysmap *physmap = NULL; |
| |
| start_addr &= page_mask; |
| |
| QLIST_FOREACH(physmap, &xen_physmap, list) { |
| if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) { |
| return physmap; |
| } |
| } |
| return NULL; |
| } |
| |
| static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size, |
| int page_mask) |
| { |
| hwaddr addr = phys_offset & page_mask; |
| XenPhysmap *physmap = NULL; |
| |
| QLIST_FOREACH(physmap, &xen_physmap, list) { |
| if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) { |
| return physmap->start_addr + (phys_offset - physmap->phys_offset); |
| } |
| } |
| |
| return phys_offset; |
| } |
| |
| #ifdef XEN_COMPAT_PHYSMAP |
| static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap) |
| { |
| char path[80], value[17]; |
| |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr", |
| xen_domid, (uint64_t)physmap->phys_offset); |
| snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->start_addr); |
| if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { |
| return -1; |
| } |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size", |
| xen_domid, (uint64_t)physmap->phys_offset); |
| snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->size); |
| if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { |
| return -1; |
| } |
| if (physmap->name) { |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name", |
| xen_domid, (uint64_t)physmap->phys_offset); |
| if (!xs_write(state->xenstore, 0, path, |
| physmap->name, strlen(physmap->name))) { |
| return -1; |
| } |
| } |
| return 0; |
| } |
| #else |
| static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap) |
| { |
| return 0; |
| } |
| #endif |
| |
| static int xen_add_to_physmap(XenIOState *state, |
| hwaddr start_addr, |
| ram_addr_t size, |
| MemoryRegion *mr, |
| hwaddr offset_within_region) |
| { |
| unsigned target_page_bits = qemu_target_page_bits(); |
| int page_size = qemu_target_page_size(); |
| int page_mask = -page_size; |
| unsigned long nr_pages; |
| int rc = 0; |
| XenPhysmap *physmap = NULL; |
| hwaddr pfn, start_gpfn; |
| hwaddr phys_offset = memory_region_get_ram_addr(mr); |
| const char *mr_name; |
| |
| if (get_physmapping(start_addr, size, page_mask)) { |
| return 0; |
| } |
| if (size <= 0) { |
| return -1; |
| } |
| |
| /* Xen can only handle a single dirty log region for now and we want |
| * the linear framebuffer to be that region. |
| * Avoid tracking any regions that is not videoram and avoid tracking |
| * the legacy vga region. */ |
| if (mr == framebuffer && start_addr > 0xbffff) { |
| goto go_physmap; |
| } |
| return -1; |
| |
| go_physmap: |
| DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n", |
| start_addr, start_addr + size); |
| |
| mr_name = memory_region_name(mr); |
| |
| physmap = g_new(XenPhysmap, 1); |
| |
| physmap->start_addr = start_addr; |
| physmap->size = size; |
| physmap->name = mr_name; |
| physmap->phys_offset = phys_offset; |
| |
| QLIST_INSERT_HEAD(&xen_physmap, physmap, list); |
| |
| if (runstate_check(RUN_STATE_INMIGRATE)) { |
| /* Now when we have a physmap entry we can replace a dummy mapping with |
| * a real one of guest foreign memory. */ |
| uint8_t *p = xen_replace_cache_entry(phys_offset, start_addr, size); |
| assert(p && p == memory_region_get_ram_ptr(mr)); |
| |
| return 0; |
| } |
| |
| pfn = phys_offset >> target_page_bits; |
| start_gpfn = start_addr >> target_page_bits; |
| nr_pages = size >> target_page_bits; |
| rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, nr_pages, pfn, |
| start_gpfn); |
| if (rc) { |
| int saved_errno = errno; |
| |
| error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx |
| " to GFN %"HWADDR_PRIx" failed: %s", |
| nr_pages, pfn, start_gpfn, strerror(saved_errno)); |
| errno = saved_errno; |
| return -1; |
| } |
| |
| rc = xendevicemodel_pin_memory_cacheattr(xen_dmod, xen_domid, |
| start_addr >> target_page_bits, |
| (start_addr + size - 1) >> target_page_bits, |
| XEN_DOMCTL_MEM_CACHEATTR_WB); |
| if (rc) { |
| error_report("pin_memory_cacheattr failed: %s", strerror(errno)); |
| } |
| return xen_save_physmap(state, physmap); |
| } |
| |
| static int xen_remove_from_physmap(XenIOState *state, |
| hwaddr start_addr, |
| ram_addr_t size) |
| { |
| unsigned target_page_bits = qemu_target_page_bits(); |
| int page_size = qemu_target_page_size(); |
| int page_mask = -page_size; |
| int rc = 0; |
| XenPhysmap *physmap = NULL; |
| hwaddr phys_offset = 0; |
| |
| physmap = get_physmapping(start_addr, size, page_mask); |
| if (physmap == NULL) { |
| return -1; |
| } |
| |
| phys_offset = physmap->phys_offset; |
| size = physmap->size; |
| |
| DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at " |
| "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset); |
| |
| size >>= target_page_bits; |
| start_addr >>= target_page_bits; |
| phys_offset >>= target_page_bits; |
| rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, size, start_addr, |
| phys_offset); |
| if (rc) { |
| int saved_errno = errno; |
| |
| error_report("relocate_memory "RAM_ADDR_FMT" pages" |
| " from GFN %"HWADDR_PRIx |
| " to GFN %"HWADDR_PRIx" failed: %s", |
| size, start_addr, phys_offset, strerror(saved_errno)); |
| errno = saved_errno; |
| return -1; |
| } |
| |
| QLIST_REMOVE(physmap, list); |
| if (log_for_dirtybit == physmap) { |
| log_for_dirtybit = NULL; |
| g_free(dirty_bitmap); |
| dirty_bitmap = NULL; |
| } |
| g_free(physmap); |
| |
| return 0; |
| } |
| |
| static void xen_sync_dirty_bitmap(XenIOState *state, |
| hwaddr start_addr, |
| ram_addr_t size) |
| { |
| unsigned target_page_bits = qemu_target_page_bits(); |
| int page_size = qemu_target_page_size(); |
| int page_mask = -page_size; |
| hwaddr npages = size >> target_page_bits; |
| const int width = sizeof(unsigned long) * 8; |
| size_t bitmap_size = DIV_ROUND_UP(npages, width); |
| int rc, i, j; |
| const XenPhysmap *physmap = NULL; |
| |
| physmap = get_physmapping(start_addr, size, page_mask); |
| if (physmap == NULL) { |
| /* not handled */ |
| return; |
| } |
| |
| if (log_for_dirtybit == NULL) { |
| log_for_dirtybit = physmap; |
| dirty_bitmap = g_new(unsigned long, bitmap_size); |
| } else if (log_for_dirtybit != physmap) { |
| /* Only one range for dirty bitmap can be tracked. */ |
| return; |
| } |
| |
| rc = xen_track_dirty_vram(xen_domid, start_addr >> target_page_bits, |
| npages, dirty_bitmap); |
| if (rc < 0) { |
| #ifndef ENODATA |
| #define ENODATA ENOENT |
| #endif |
| if (errno == ENODATA) { |
| memory_region_set_dirty(framebuffer, 0, size); |
| DPRINTF("xen: track_dirty_vram failed (0x" HWADDR_FMT_plx |
| ", 0x" HWADDR_FMT_plx "): %s\n", |
| start_addr, start_addr + size, strerror(errno)); |
| } |
| return; |
| } |
| |
| for (i = 0; i < bitmap_size; i++) { |
| unsigned long map = dirty_bitmap[i]; |
| while (map != 0) { |
| j = ctzl(map); |
| map &= ~(1ul << j); |
| memory_region_set_dirty(framebuffer, |
| (i * width + j) * page_size, page_size); |
| }; |
| } |
| } |
| |
| static void xen_log_start(MemoryListener *listener, |
| MemoryRegionSection *section, |
| int old, int new) |
| { |
| XenIOState *state = container_of(listener, XenIOState, memory_listener); |
| |
| if (new & ~old & (1 << DIRTY_MEMORY_VGA)) { |
| xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| int128_get64(section->size)); |
| } |
| } |
| |
| static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section, |
| int old, int new) |
| { |
| if (old & ~new & (1 << DIRTY_MEMORY_VGA)) { |
| log_for_dirtybit = NULL; |
| g_free(dirty_bitmap); |
| dirty_bitmap = NULL; |
| /* Disable dirty bit tracking */ |
| xen_track_dirty_vram(xen_domid, 0, 0, NULL); |
| } |
| } |
| |
| static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) |
| { |
| XenIOState *state = container_of(listener, XenIOState, memory_listener); |
| |
| xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| int128_get64(section->size)); |
| } |
| |
| static bool xen_log_global_start(MemoryListener *listener, Error **errp) |
| { |
| if (xen_enabled()) { |
| xen_in_migration = true; |
| } |
| return true; |
| } |
| |
| static void xen_log_global_stop(MemoryListener *listener) |
| { |
| xen_in_migration = false; |
| } |
| |
| static const MemoryListener xen_memory_listener = { |
| .name = "xen-memory", |
| .region_add = xen_region_add, |
| .region_del = xen_region_del, |
| .log_start = xen_log_start, |
| .log_stop = xen_log_stop, |
| .log_sync = xen_log_sync, |
| .log_global_start = xen_log_global_start, |
| .log_global_stop = xen_log_global_stop, |
| .priority = MEMORY_LISTENER_PRIORITY_ACCEL, |
| }; |
| |
| static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req) |
| { |
| X86CPU *cpu; |
| CPUX86State *env; |
| |
| cpu = X86_CPU(current_cpu); |
| env = &cpu->env; |
| env->regs[R_EAX] = req->data; |
| env->regs[R_EBX] = vmport_regs->ebx; |
| env->regs[R_ECX] = vmport_regs->ecx; |
| env->regs[R_EDX] = vmport_regs->edx; |
| env->regs[R_ESI] = vmport_regs->esi; |
| env->regs[R_EDI] = vmport_regs->edi; |
| } |
| |
| static void regs_from_cpu(vmware_regs_t *vmport_regs) |
| { |
| X86CPU *cpu = X86_CPU(current_cpu); |
| CPUX86State *env = &cpu->env; |
| |
| vmport_regs->ebx = env->regs[R_EBX]; |
| vmport_regs->ecx = env->regs[R_ECX]; |
| vmport_regs->edx = env->regs[R_EDX]; |
| vmport_regs->esi = env->regs[R_ESI]; |
| vmport_regs->edi = env->regs[R_EDI]; |
| } |
| |
| static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req) |
| { |
| vmware_regs_t *vmport_regs; |
| |
| assert(shared_vmport_page); |
| vmport_regs = |
| &shared_vmport_page->vcpu_vmport_regs[state->send_vcpu]; |
| QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs)); |
| |
| current_cpu = state->cpu_by_vcpu_id[state->send_vcpu]; |
| regs_to_cpu(vmport_regs, req); |
| cpu_ioreq_pio(req); |
| regs_from_cpu(vmport_regs); |
| current_cpu = NULL; |
| } |
| |
| #ifdef XEN_COMPAT_PHYSMAP |
| static void xen_read_physmap(XenIOState *state) |
| { |
| XenPhysmap *physmap = NULL; |
| unsigned int len, num, i; |
| char path[80], *value = NULL; |
| char **entries = NULL; |
| |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap", xen_domid); |
| entries = xs_directory(state->xenstore, 0, path, &num); |
| if (entries == NULL) |
| return; |
| |
| for (i = 0; i < num; i++) { |
| physmap = g_new(XenPhysmap, 1); |
| physmap->phys_offset = strtoull(entries[i], NULL, 16); |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%s/start_addr", |
| xen_domid, entries[i]); |
| value = xs_read(state->xenstore, 0, path, &len); |
| if (value == NULL) { |
| g_free(physmap); |
| continue; |
| } |
| physmap->start_addr = strtoull(value, NULL, 16); |
| free(value); |
| |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%s/size", |
| xen_domid, entries[i]); |
| value = xs_read(state->xenstore, 0, path, &len); |
| if (value == NULL) { |
| g_free(physmap); |
| continue; |
| } |
| physmap->size = strtoull(value, NULL, 16); |
| free(value); |
| |
| snprintf(path, sizeof(path), |
| "/local/domain/0/device-model/%d/physmap/%s/name", |
| xen_domid, entries[i]); |
| physmap->name = xs_read(state->xenstore, 0, path, &len); |
| |
| QLIST_INSERT_HEAD(&xen_physmap, physmap, list); |
| } |
| free(entries); |
| } |
| #else |
| static void xen_read_physmap(XenIOState *state) |
| { |
| } |
| #endif |
| |
| static void xen_wakeup_notifier(Notifier *notifier, void *data) |
| { |
| xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0); |
| } |
| |
| static bool xen_check_stubdomain(struct xs_handle *xsh) |
| { |
| char *dm_path = g_strdup_printf( |
| "/local/domain/%d/image/device-model-domid", xen_domid); |
| char *val; |
| int32_t dm_domid; |
| bool is_stubdom = false; |
| |
| val = xs_read(xsh, 0, dm_path, NULL); |
| if (val) { |
| if (sscanf(val, "%d", &dm_domid) == 1) { |
| is_stubdom = dm_domid != 0; |
| } |
| free(val); |
| } |
| |
| g_free(dm_path); |
| return is_stubdom; |
| } |
| |
| void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory) |
| { |
| MachineState *ms = MACHINE(pcms); |
| unsigned int max_cpus = ms->smp.max_cpus; |
| int rc; |
| xen_pfn_t ioreq_pfn; |
| XenIOState *state; |
| |
| state = g_new0(XenIOState, 1); |
| |
| xen_register_ioreq(state, max_cpus, |
| HVM_IOREQSRV_BUFIOREQ_ATOMIC, |
| &xen_memory_listener); |
| |
| xen_is_stubdomain = xen_check_stubdomain(state->xenstore); |
| |
| QLIST_INIT(&xen_physmap); |
| xen_read_physmap(state); |
| |
| suspend.notify = xen_suspend_notifier; |
| qemu_register_suspend_notifier(&suspend); |
| |
| wakeup.notify = xen_wakeup_notifier; |
| qemu_register_wakeup_notifier(&wakeup); |
| |
| rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn); |
| if (!rc) { |
| DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn); |
| shared_vmport_page = |
| xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE, |
| 1, &ioreq_pfn, NULL); |
| if (shared_vmport_page == NULL) { |
| error_report("map shared vmport IO page returned error %d handle=%p", |
| errno, xen_xc); |
| goto err; |
| } |
| } else if (rc != -ENOSYS) { |
| error_report("get vmport regs pfn returned error %d, rc=%d", |
| errno, rc); |
| goto err; |
| } |
| |
| xen_ram_init(pcms, ms->ram_size, ram_memory); |
| |
| /* Disable ACPI build because Xen handles it */ |
| pcms->acpi_build_enabled = false; |
| |
| return; |
| |
| err: |
| error_report("xen hardware virtual machine initialisation failed"); |
| exit(1); |
| } |
| |
| void xen_register_framebuffer(MemoryRegion *mr) |
| { |
| framebuffer = mr; |
| } |
| |
| void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length) |
| { |
| unsigned target_page_bits = qemu_target_page_bits(); |
| int page_size = qemu_target_page_size(); |
| int page_mask = -page_size; |
| |
| if (unlikely(xen_in_migration)) { |
| int rc; |
| ram_addr_t start_pfn, nb_pages; |
| |
| start = xen_phys_offset_to_gaddr(start, length, page_mask); |
| |
| if (length == 0) { |
| length = page_size; |
| } |
| start_pfn = start >> target_page_bits; |
| nb_pages = ((start + length + page_size - 1) >> target_page_bits) |
| - start_pfn; |
| rc = xen_modified_memory(xen_domid, start_pfn, nb_pages); |
| if (rc) { |
| fprintf(stderr, |
| "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n", |
| __func__, start, nb_pages, errno, strerror(errno)); |
| } |
| } |
| } |
| |
| void qmp_xen_set_global_dirty_log(bool enable, Error **errp) |
| { |
| if (enable) { |
| memory_global_dirty_log_start(GLOBAL_DIRTY_MIGRATION, errp); |
| } else { |
| memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION); |
| } |
| } |
| |
| void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section, |
| bool add) |
| { |
| unsigned target_page_bits = qemu_target_page_bits(); |
| int page_size = qemu_target_page_size(); |
| int page_mask = -page_size; |
| hwaddr start_addr = section->offset_within_address_space; |
| ram_addr_t size = int128_get64(section->size); |
| bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA); |
| hvmmem_type_t mem_type; |
| |
| if (!memory_region_is_ram(section->mr)) { |
| return; |
| } |
| |
| if (log_dirty != add) { |
| return; |
| } |
| |
| trace_xen_client_set_memory(start_addr, size, log_dirty); |
| |
| start_addr &= page_mask; |
| size = ROUND_UP(size, page_size); |
| |
| if (add) { |
| if (!memory_region_is_rom(section->mr)) { |
| xen_add_to_physmap(state, start_addr, size, |
| section->mr, section->offset_within_region); |
| } else { |
| mem_type = HVMMEM_ram_ro; |
| if (xen_set_mem_type(xen_domid, mem_type, |
| start_addr >> target_page_bits, |
| size >> target_page_bits)) { |
| DPRINTF("xen_set_mem_type error, addr: "HWADDR_FMT_plx"\n", |
| start_addr); |
| } |
| } |
| } else { |
| if (xen_remove_from_physmap(state, start_addr, size) < 0) { |
| DPRINTF("physmapping does not exist at "HWADDR_FMT_plx"\n", start_addr); |
| } |
| } |
| } |
| |
| void arch_handle_ioreq(XenIOState *state, ioreq_t *req) |
| { |
| switch (req->type) { |
| case IOREQ_TYPE_VMWARE_PORT: |
| handle_vmport_ioreq(state, req); |
| break; |
| default: |
| hw_error("Invalid ioreq type 0x%x\n", req->type); |
| } |
| |
| return; |
| } |
