X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=xen-all.c;h=8c05843faf0f535a8c3bfdd04bab3e95e1eaf93b;hb=da5156cd9a62274839d6fa685cc52614886cc722;hp=dd52f02573280655f5617623e5cb9f517c8155fa;hpb=7376e5827a898d8ddf10f929047cc84bf65d9f52;p=qemu.git diff --git a/xen-all.c b/xen-all.c index dd52f0257..8c05843fa 100644 --- a/xen-all.c +++ b/xen-all.c @@ -10,15 +10,17 @@ #include -#include "hw/pci.h" +#include "hw/pci/pci.h" #include "hw/pc.h" #include "hw/xen_common.h" #include "hw/xen_backend.h" +#include "qmp-commands.h" -#include "range.h" -#include "xen-mapcache.h" +#include "char/char.h" +#include "qemu/range.h" +#include "sysemu/xen-mapcache.h" #include "trace.h" -#include "exec-memory.h" +#include "exec/address-spaces.h" #include #include @@ -36,6 +38,7 @@ static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi; static MemoryRegion *framebuffer; +static bool xen_in_migration; /* Compatibility with older version */ #if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a @@ -59,14 +62,17 @@ static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu) } # define FMT_ioreq_size "u" #endif +#ifndef HVM_PARAM_BUFIOREQ_EVTCHN +#define HVM_PARAM_BUFIOREQ_EVTCHN 26 +#endif #define BUFFER_IO_MAX_DELAY 100 typedef struct XenPhysmap { - target_phys_addr_t start_addr; + hwaddr start_addr; ram_addr_t size; - MemoryRegion *mr; - target_phys_addr_t phys_offset; + char *name; + hwaddr phys_offset; QLIST_ENTRY(XenPhysmap) list; } XenPhysmap; @@ -77,6 +83,8 @@ typedef struct XenIOState { QEMUTimer *buffered_io_timer; /* the evtchn port for polling the notification, */ evtchn_port_t *ioreq_local_port; + /* evtchn local port for buffered io */ + evtchn_port_t bufioreq_local_port; /* the evtchn fd for polling */ XenEvtchn xce_handle; /* which vcpu we are serving */ @@ -85,10 +93,11 @@ typedef struct XenIOState { struct xs_handle *xenstore; MemoryListener memory_listener; QLIST_HEAD(, XenPhysmap) physmap; - target_phys_addr_t free_phys_offset; + hwaddr free_phys_offset; const XenPhysmap *log_for_dirtybit; Notifier exit; + Notifier suspend; } XenIOState; /* Xen specific function for piix pci */ @@ -121,12 +130,14 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) } } -void xen_cmos_set_s3_resume(void *opaque, int irq, int level) +void xen_hvm_inject_msi(uint64_t addr, uint32_t data) { - pc_cmos_set_s3_resume(opaque, irq, level); - if (level) { - xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); - } + xen_xc_hvm_inject_msi(xen_xc, 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 */ @@ -192,6 +203,14 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr) xen_pfn_t *pfn_list; int i; + if (runstate_check(RUN_STATE_INMIGRATE)) { + /* RAM already populated in Xen */ + fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT + " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n", + __func__, size, ram_addr); + return; + } + if (mr == &ram_memory) { return; } @@ -213,7 +232,7 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr) } static XenPhysmap *get_physmapping(XenIOState *state, - target_phys_addr_t start_addr, ram_addr_t size) + hwaddr start_addr, ram_addr_t size) { XenPhysmap *physmap = NULL; @@ -227,18 +246,35 @@ static XenPhysmap *get_physmapping(XenIOState *state, return NULL; } +static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr, + ram_addr_t size, void *opaque) +{ + hwaddr addr = start_addr & TARGET_PAGE_MASK; + XenIOState *xen_io_state = opaque; + XenPhysmap *physmap = NULL; + + QLIST_FOREACH(physmap, &xen_io_state->physmap, list) { + if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) { + return physmap->start_addr; + } + } + + return start_addr; +} + #if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340 static int xen_add_to_physmap(XenIOState *state, - target_phys_addr_t start_addr, + hwaddr start_addr, ram_addr_t size, MemoryRegion *mr, - target_phys_addr_t offset_within_region) + hwaddr offset_within_region) { unsigned long i = 0; int rc = 0; XenPhysmap *physmap = NULL; - target_phys_addr_t pfn, start_gpfn; - target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr); + hwaddr pfn, start_gpfn; + hwaddr phys_offset = memory_region_get_ram_addr(mr); + char path[80], value[17]; if (get_physmapping(state, start_addr, size)) { return 0; @@ -257,7 +293,8 @@ static int xen_add_to_physmap(XenIOState *state, return -1; go_physmap: - DPRINTF("mapping vram to %llx - %llx\n", start_addr, start_addr + size); + DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n", + start_addr, start_addr + size); pfn = phys_offset >> TARGET_PAGE_BITS; start_gpfn = start_addr >> TARGET_PAGE_BITS; @@ -277,6 +314,7 @@ go_physmap: physmap->start_addr = start_addr; physmap->size = size; + physmap->name = (char *)mr->name; physmap->phys_offset = phys_offset; QLIST_INSERT_HEAD(&state->physmap, physmap, list); @@ -285,17 +323,41 @@ go_physmap: start_addr >> TARGET_PAGE_BITS, (start_addr + size) >> TARGET_PAGE_BITS, XEN_DOMCTL_MEM_CACHEATTR_WB); + + snprintf(path, sizeof(path), + "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr", + xen_domid, (uint64_t)phys_offset); + snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)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)phys_offset); + snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size); + if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { + return -1; + } + if (mr->name) { + snprintf(path, sizeof(path), + "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name", + xen_domid, (uint64_t)phys_offset); + if (!xs_write(state->xenstore, 0, path, mr->name, strlen(mr->name))) { + return -1; + } + } + return 0; } static int xen_remove_from_physmap(XenIOState *state, - target_phys_addr_t start_addr, + hwaddr start_addr, ram_addr_t size) { unsigned long i = 0; int rc = 0; XenPhysmap *physmap = NULL; - target_phys_addr_t phys_offset = 0; + hwaddr phys_offset = 0; physmap = get_physmapping(state, start_addr, size); if (physmap == NULL) { @@ -305,8 +367,8 @@ static int xen_remove_from_physmap(XenIOState *state, phys_offset = physmap->phys_offset; size = physmap->size; - DPRINTF("unmapping vram to %llx - %llx, from %llx\n", - phys_offset, phys_offset + size, start_addr); + DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", from ", + "%"HWADDR_PRIx"\n", phys_offset, phys_offset + size, start_addr); size >>= TARGET_PAGE_BITS; start_addr >>= TARGET_PAGE_BITS; @@ -334,16 +396,16 @@ static int xen_remove_from_physmap(XenIOState *state, #else static int xen_add_to_physmap(XenIOState *state, - target_phys_addr_t start_addr, + hwaddr start_addr, ram_addr_t size, MemoryRegion *mr, - target_phys_addr_t offset_within_region) + hwaddr offset_within_region) { return -ENOSYS; } static int xen_remove_from_physmap(XenIOState *state, - target_phys_addr_t start_addr, + hwaddr start_addr, ram_addr_t size) { return -ENOSYS; @@ -355,7 +417,7 @@ static void xen_set_memory(struct MemoryListener *listener, bool add) { XenIOState *state = container_of(listener, XenIOState, memory_listener); - target_phys_addr_t start_addr = section->offset_within_address_space; + hwaddr start_addr = section->offset_within_address_space; ram_addr_t size = section->size; bool log_dirty = memory_region_is_logging(section->mr); hvmmem_type_t mem_type; @@ -407,10 +469,10 @@ static void xen_region_del(MemoryListener *listener, } static void xen_sync_dirty_bitmap(XenIOState *state, - target_phys_addr_t start_addr, + hwaddr start_addr, ram_addr_t size) { - target_phys_addr_t npages = size >> TARGET_PAGE_BITS; + hwaddr npages = size >> TARGET_PAGE_BITS; const int width = sizeof(unsigned long) * 8; unsigned long bitmap[(npages + width - 1) / width]; int rc, i, j; @@ -434,7 +496,8 @@ static void xen_sync_dirty_bitmap(XenIOState *state, bitmap); if (rc < 0) { if (rc != -ENODATA) { - fprintf(stderr, "xen: track_dirty_vram failed (0x" TARGET_FMT_plx + memory_region_set_dirty(framebuffer, 0, size); + DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx ", 0x" TARGET_FMT_plx "): %s\n", start_addr, start_addr + size, strerror(-rc)); } @@ -481,22 +544,14 @@ static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) static void xen_log_global_start(MemoryListener *listener) { + if (xen_enabled()) { + xen_in_migration = true; + } } static void xen_log_global_stop(MemoryListener *listener) { -} - -static void xen_eventfd_add(MemoryListener *listener, - MemoryRegionSection *section, - bool match_data, uint64_t data, int fd) -{ -} - -static void xen_eventfd_del(MemoryListener *listener, - MemoryRegionSection *section, - bool match_data, uint64_t data, int fd) -{ + xen_in_migration = false; } static MemoryListener xen_memory_listener = { @@ -507,27 +562,38 @@ static MemoryListener xen_memory_listener = { .log_sync = xen_log_sync, .log_global_start = xen_log_global_start, .log_global_stop = xen_log_global_stop, - .eventfd_add = xen_eventfd_add, - .eventfd_del = xen_eventfd_del, .priority = 10, }; +void qmp_xen_set_global_dirty_log(bool enable, Error **errp) +{ + if (enable) { + memory_global_dirty_log_start(); + } else { + memory_global_dirty_log_stop(); + } +} + /* VCPU Operations, MMIO, IO ring ... */ static void xen_reset_vcpu(void *opaque) { - CPUState *env = opaque; + CPUState *cpu = opaque; - env->halted = 1; + cpu->halted = 1; } void xen_vcpu_init(void) { - CPUState *first_cpu; + if (first_cpu != NULL) { + CPUState *cpu = ENV_GET_CPU(first_cpu); - if ((first_cpu = qemu_get_cpu(0))) { - qemu_register_reset(xen_reset_vcpu, first_cpu); - xen_reset_vcpu(first_cpu); + qemu_register_reset(xen_reset_vcpu, cpu); + xen_reset_vcpu(cpu); + } + /* if rtc_clock is left to default (host_clock), disable it */ + if (rtc_clock == host_clock) { + qemu_clock_enable(rtc_clock, false); } } @@ -560,6 +626,12 @@ static ioreq_t *cpu_get_ioreq(XenIOState *state) evtchn_port_t port; port = xc_evtchn_pending(state->xce_handle); + if (port == state->bufioreq_local_port) { + qemu_mod_timer(state->buffered_io_timer, + BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); + return NULL; + } + if (port != -1) { for (i = 0; i < smp_cpus; i++) { if (state->ioreq_local_port[i] == port) { @@ -612,11 +684,45 @@ static void do_outp(pio_addr_t addr, } } -static void cpu_ioreq_pio(ioreq_t *req) +/* + * Helper functions which read/write an object from/to physical guest + * memory, as part of the implementation of an ioreq. + * + * Equivalent to + * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i, + * val, req->size, 0/1) + * except without the integer overflow problems. + */ +static void rw_phys_req_item(hwaddr addr, + ioreq_t *req, uint32_t i, void *val, int rw) { - int i, sign; + /* Do everything unsigned so overflow just results in a truncated result + * and accesses to undesired parts of guest memory, which is up + * to the guest */ + hwaddr offset = (hwaddr)req->size * i; + if (req->df) { + addr -= offset; + } else { + addr += offset; + } + cpu_physical_memory_rw(addr, val, req->size, rw); +} + +static inline void read_phys_req_item(hwaddr addr, + ioreq_t *req, uint32_t i, void *val) +{ + rw_phys_req_item(addr, req, i, val, 0); +} +static inline void write_phys_req_item(hwaddr addr, + ioreq_t *req, uint32_t i, void *val) +{ + rw_phys_req_item(addr, req, i, val, 1); +} - sign = req->df ? -1 : 1; + +static void cpu_ioreq_pio(ioreq_t *req) +{ + uint32_t i; if (req->dir == IOREQ_READ) { if (!req->data_is_ptr) { @@ -626,8 +732,7 @@ static void cpu_ioreq_pio(ioreq_t *req) for (i = 0; i < req->count; i++) { tmp = do_inp(req->addr, req->size); - cpu_physical_memory_write(req->data + (sign * i * req->size), - (uint8_t *) &tmp, req->size); + write_phys_req_item(req->data, req, i, &tmp); } } } else if (req->dir == IOREQ_WRITE) { @@ -637,8 +742,7 @@ static void cpu_ioreq_pio(ioreq_t *req) for (i = 0; i < req->count; i++) { uint32_t tmp = 0; - cpu_physical_memory_read(req->data + (sign * i * req->size), - (uint8_t*) &tmp, req->size); + read_phys_req_item(req->data, req, i, &tmp); do_outp(req->addr, req->size, tmp); } } @@ -647,20 +751,16 @@ static void cpu_ioreq_pio(ioreq_t *req) static void cpu_ioreq_move(ioreq_t *req) { - int i, sign; - - sign = req->df ? -1 : 1; + uint32_t i; if (!req->data_is_ptr) { if (req->dir == IOREQ_READ) { for (i = 0; i < req->count; i++) { - cpu_physical_memory_read(req->addr + (sign * i * req->size), - (uint8_t *) &req->data, req->size); + read_phys_req_item(req->addr, req, i, &req->data); } } else if (req->dir == IOREQ_WRITE) { for (i = 0; i < req->count; i++) { - cpu_physical_memory_write(req->addr + (sign * i * req->size), - (uint8_t *) &req->data, req->size); + write_phys_req_item(req->addr, req, i, &req->data); } } } else { @@ -668,17 +768,13 @@ static void cpu_ioreq_move(ioreq_t *req) if (req->dir == IOREQ_READ) { for (i = 0; i < req->count; i++) { - cpu_physical_memory_read(req->addr + (sign * i * req->size), - (uint8_t*) &tmp, req->size); - cpu_physical_memory_write(req->data + (sign * i * req->size), - (uint8_t*) &tmp, req->size); + read_phys_req_item(req->addr, req, i, &tmp); + write_phys_req_item(req->data, req, i, &tmp); } } else if (req->dir == IOREQ_WRITE) { for (i = 0; i < req->count; i++) { - cpu_physical_memory_read(req->data + (sign * i * req->size), - (uint8_t*) &tmp, req->size); - cpu_physical_memory_write(req->addr + (sign * i * req->size), - (uint8_t*) &tmp, req->size); + read_phys_req_item(req->data, req, i, &tmp); + write_phys_req_item(req->addr, req, i, &tmp); } } } @@ -708,16 +804,18 @@ static void handle_ioreq(ioreq_t *req) } } -static void handle_buffered_iopage(XenIOState *state) +static int handle_buffered_iopage(XenIOState *state) { buf_ioreq_t *buf_req = NULL; ioreq_t req; int qw; if (!state->buffered_io_page) { - return; + return 0; } + memset(&req, 0x00, sizeof(req)); + while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) { buf_req = &state->buffered_io_page->buf_ioreq[ state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM]; @@ -742,15 +840,21 @@ static void handle_buffered_iopage(XenIOState *state) xen_mb(); state->buffered_io_page->read_pointer += qw ? 2 : 1; } + + return req.count; } static void handle_buffered_io(void *opaque) { XenIOState *state = opaque; - handle_buffered_iopage(state); - qemu_mod_timer(state->buffered_io_timer, - BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); + if (handle_buffered_iopage(state)) { + qemu_mod_timer(state->buffered_io_timer, + BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); + } else { + qemu_del_timer(state->buffered_io_timer); + xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port); + } } static void cpu_handle_ioreq(void *opaque) @@ -768,7 +872,7 @@ static void cpu_handle_ioreq(void *opaque) "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", req->state, req->data_is_ptr, req->addr, req->data, req->count, req->size); - destroy_hvm_domain(); + destroy_hvm_domain(false); return; } @@ -782,10 +886,11 @@ static void cpu_handle_ioreq(void *opaque) */ if (runstate_is_running()) { if (qemu_shutdown_requested_get()) { - destroy_hvm_domain(); + destroy_hvm_domain(false); } if (qemu_reset_requested_get()) { qemu_system_reset(VMRESET_REPORT); + destroy_hvm_domain(true); } } @@ -880,7 +985,6 @@ static void xen_main_loop_prepare(XenIOState *state) state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io, state); - qemu_mod_timer(state->buffered_io_timer, qemu_get_clock_ms(rt_clock)); if (evtchn_fd != -1) { qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state); @@ -928,10 +1032,59 @@ int xen_init(void) return 0; } +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_malloc(sizeof (XenPhysmap)); + 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) { + 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) { + 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(&state->physmap, physmap, list); + } + free(entries); +} + int xen_hvm_init(void) { int i, rc; unsigned long ioreq_pfn; + unsigned long bufioreq_evtchn; XenIOState *state; state = g_malloc0(sizeof (XenIOState)); @@ -951,6 +1104,9 @@ int xen_hvm_init(void) state->exit.notify = xen_exit_notifier; qemu_add_exit_notifier(&state->exit); + state->suspend.notify = xen_suspend_notifier; + qemu_register_suspend_notifier(&state->suspend); + xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn); DPRINTF("shared page at pfn %lx\n", ioreq_pfn); state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, @@ -981,15 +1137,29 @@ int xen_hvm_init(void) state->ioreq_local_port[i] = rc; } + rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN, + &bufioreq_evtchn); + if (rc < 0) { + fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n"); + return -1; + } + rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, + (uint32_t)bufioreq_evtchn); + if (rc == -1) { + fprintf(stderr, "bind interdomain ioctl error %d\n", errno); + return -1; + } + state->bufioreq_local_port = rc; + /* Init RAM management */ - xen_map_cache_init(); + xen_map_cache_init(xen_phys_offset_to_gaddr, state); xen_ram_init(ram_size); qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); state->memory_listener = xen_memory_listener; QLIST_INIT(&state->physmap); - memory_listener_register(&state->memory_listener, NULL); + memory_listener_register(&state->memory_listener, &address_space_memory); state->log_for_dirtybit = NULL; /* Initialize backend core & drivers */ @@ -1000,11 +1170,12 @@ int xen_hvm_init(void) xen_be_register("console", &xen_console_ops); xen_be_register("vkbd", &xen_kbdmouse_ops); xen_be_register("qdisk", &xen_blkdev_ops); + xen_read_physmap(state); return 0; } -void destroy_hvm_domain(void) +void destroy_hvm_domain(bool reboot) { XenXC xc_handle; int sts; @@ -1013,12 +1184,15 @@ void destroy_hvm_domain(void) if (xc_handle == XC_HANDLER_INITIAL_VALUE) { fprintf(stderr, "Cannot acquire xenctrl handle\n"); } else { - sts = xc_domain_shutdown(xc_handle, xen_domid, SHUTDOWN_poweroff); + sts = xc_domain_shutdown(xc_handle, xen_domid, + reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff); if (sts != 0) { - fprintf(stderr, "? xc_domain_shutdown failed to issue poweroff, " - "sts %d, %s\n", sts, strerror(errno)); + fprintf(stderr, "xc_domain_shutdown failed to issue %s, " + "sts %d, %s\n", reboot ? "reboot" : "poweroff", + sts, strerror(errno)); } else { - fprintf(stderr, "Issued domain %d poweroff\n", xen_domid); + fprintf(stderr, "Issued domain %d %s\n", xen_domid, + reboot ? "reboot" : "poweroff"); } xc_interface_close(xc_handle); } @@ -1028,3 +1202,36 @@ void xen_register_framebuffer(MemoryRegion *mr) { framebuffer = mr; } + +void xen_shutdown_fatal_error(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + fprintf(stderr, "Will destroy the domain.\n"); + /* destroy the domain */ + qemu_system_shutdown_request(); +} + +void xen_modified_memory(ram_addr_t start, ram_addr_t length) +{ + if (unlikely(xen_in_migration)) { + int rc; + ram_addr_t start_pfn, nb_pages; + + if (length == 0) { + length = TARGET_PAGE_SIZE; + } + start_pfn = start >> TARGET_PAGE_BITS; + nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS) + - start_pfn; + rc = xc_hvm_modified_memory(xen_xc, 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, rc, strerror(-rc)); + } + } +}