#define QEMU_ARCH QEMU_ARCH_XTENSA
#elif defined(TARGET_UNICORE32)
#define QEMU_ARCH QEMU_ARCH_UNICORE32
+#elif defined(TARGET_TRICORE)
+#define QEMU_ARCH QEMU_ARCH_TRICORE
#endif
const uint32_t arch_type = QEMU_ARCH;
/* Needs iothread lock! */
+/* Fix me: there are too many global variables used in migration process. */
+static int64_t start_time;
+static int64_t bytes_xfer_prev;
+static int64_t num_dirty_pages_period;
+
+static void migration_bitmap_sync_init(void)
+{
+ start_time = 0;
+ bytes_xfer_prev = 0;
+ num_dirty_pages_period = 0;
+}
static void migration_bitmap_sync(void)
{
RAMBlock *block;
uint64_t num_dirty_pages_init = migration_dirty_pages;
MigrationState *s = migrate_get_current();
- static int64_t start_time;
- static int64_t bytes_xfer_prev;
- static int64_t num_dirty_pages_period;
int64_t end_time;
int64_t bytes_xfer_now;
static uint64_t xbzrle_cache_miss_prev;
}
/*
- * ram_save_block: Writes a page of memory to the stream f
+ * ram_save_page: Send the given page to the stream
+ *
+ * Returns: Number of bytes written.
+ */
+static int ram_save_page(QEMUFile *f, RAMBlock* block, ram_addr_t offset,
+ bool last_stage)
+{
+ int bytes_sent;
+ int cont;
+ ram_addr_t current_addr;
+ MemoryRegion *mr = block->mr;
+ uint8_t *p;
+ int ret;
+ bool send_async = true;
+
+ cont = (block == last_sent_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
+
+ p = memory_region_get_ram_ptr(mr) + offset;
+
+ /* In doubt sent page as normal */
+ bytes_sent = -1;
+ ret = ram_control_save_page(f, block->offset,
+ offset, TARGET_PAGE_SIZE, &bytes_sent);
+
+ XBZRLE_cache_lock();
+
+ current_addr = block->offset + offset;
+ if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
+ if (ret != RAM_SAVE_CONTROL_DELAYED) {
+ if (bytes_sent > 0) {
+ acct_info.norm_pages++;
+ } else if (bytes_sent == 0) {
+ acct_info.dup_pages++;
+ }
+ }
+ } else if (is_zero_range(p, TARGET_PAGE_SIZE)) {
+ acct_info.dup_pages++;
+ bytes_sent = save_block_hdr(f, block, offset, cont,
+ RAM_SAVE_FLAG_COMPRESS);
+ qemu_put_byte(f, 0);
+ bytes_sent++;
+ /* Must let xbzrle know, otherwise a previous (now 0'd) cached
+ * page would be stale
+ */
+ xbzrle_cache_zero_page(current_addr);
+ } else if (!ram_bulk_stage && migrate_use_xbzrle()) {
+ bytes_sent = save_xbzrle_page(f, &p, current_addr, block,
+ offset, cont, last_stage);
+ if (!last_stage) {
+ /* Can't send this cached data async, since the cache page
+ * might get updated before it gets to the wire
+ */
+ send_async = false;
+ }
+ }
+
+ /* XBZRLE overflow or normal page */
+ if (bytes_sent == -1) {
+ bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
+ if (send_async) {
+ qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE);
+ } else {
+ qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
+ }
+ bytes_sent += TARGET_PAGE_SIZE;
+ acct_info.norm_pages++;
+ }
+
+ XBZRLE_cache_unlock();
+
+ return bytes_sent;
+}
+
+/*
+ * ram_find_and_save_block: Finds a page to send and sends it to f
*
* Returns: The number of bytes written.
* 0 means no dirty pages
*/
-static int ram_save_block(QEMUFile *f, bool last_stage)
+static int ram_find_and_save_block(QEMUFile *f, bool last_stage)
{
RAMBlock *block = last_seen_block;
ram_addr_t offset = last_offset;
bool complete_round = false;
int bytes_sent = 0;
MemoryRegion *mr;
- ram_addr_t current_addr;
if (!block)
block = QTAILQ_FIRST(&ram_list.blocks);
ram_bulk_stage = false;
}
} else {
- int ret;
- uint8_t *p;
- bool send_async = true;
- int cont = (block == last_sent_block) ?
- RAM_SAVE_FLAG_CONTINUE : 0;
-
- p = memory_region_get_ram_ptr(mr) + offset;
-
- /* In doubt sent page as normal */
- bytes_sent = -1;
- ret = ram_control_save_page(f, block->offset,
- offset, TARGET_PAGE_SIZE, &bytes_sent);
-
- XBZRLE_cache_lock();
-
- current_addr = block->offset + offset;
- if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
- if (ret != RAM_SAVE_CONTROL_DELAYED) {
- if (bytes_sent > 0) {
- acct_info.norm_pages++;
- } else if (bytes_sent == 0) {
- acct_info.dup_pages++;
- }
- }
- } else if (is_zero_range(p, TARGET_PAGE_SIZE)) {
- acct_info.dup_pages++;
- bytes_sent = save_block_hdr(f, block, offset, cont,
- RAM_SAVE_FLAG_COMPRESS);
- qemu_put_byte(f, 0);
- bytes_sent++;
- /* Must let xbzrle know, otherwise a previous (now 0'd) cached
- * page would be stale
- */
- xbzrle_cache_zero_page(current_addr);
- } else if (!ram_bulk_stage && migrate_use_xbzrle()) {
- bytes_sent = save_xbzrle_page(f, &p, current_addr, block,
- offset, cont, last_stage);
- if (!last_stage) {
- /* Can't send this cached data async, since the cache page
- * might get updated before it gets to the wire
- */
- send_async = false;
- }
- }
-
- /* XBZRLE overflow or normal page */
- if (bytes_sent == -1) {
- bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
- if (send_async) {
- qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE);
- } else {
- qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
- }
- bytes_sent += TARGET_PAGE_SIZE;
- acct_info.norm_pages++;
- }
+ bytes_sent = ram_save_page(f, block, offset, last_stage);
- XBZRLE_cache_unlock();
/* if page is unmodified, continue to the next */
if (bytes_sent > 0) {
last_sent_block = block;
XBZRLE_cache_lock();
if (XBZRLE.cache) {
cache_fini(XBZRLE.cache);
- g_free(XBZRLE.cache);
g_free(XBZRLE.encoded_buf);
g_free(XBZRLE.current_buf);
XBZRLE.cache = NULL;
mig_throttle_on = false;
dirty_rate_high_cnt = 0;
bitmap_sync_count = 0;
+ migration_bitmap_sync_init();
if (migrate_use_xbzrle()) {
XBZRLE_cache_lock();
while ((ret = qemu_file_rate_limit(f)) == 0) {
int bytes_sent;
- bytes_sent = ram_save_block(f, false);
+ bytes_sent = ram_find_and_save_block(f, false);
/* no more blocks to sent */
if (bytes_sent == 0) {
break;
while (true) {
int bytes_sent;
- bytes_sent = ram_save_block(f, true);
+ bytes_sent = ram_find_and_save_block(f, true);
/* no more blocks to sent */
if (bytes_sent == 0) {
break;
static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host)
{
- int ret, rc = 0;
unsigned int xh_len;
int xh_flags;
xh_len = qemu_get_be16(f);
if (xh_flags != ENCODING_FLAG_XBZRLE) {
- fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
+ error_report("Failed to load XBZRLE page - wrong compression!");
return -1;
}
if (xh_len > TARGET_PAGE_SIZE) {
- fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
+ error_report("Failed to load XBZRLE page - len overflow!");
return -1;
}
/* load data and decode */
qemu_get_buffer(f, xbzrle_decoded_buf, xh_len);
/* decode RLE */
- ret = xbzrle_decode_buffer(xbzrle_decoded_buf, xh_len, host,
- TARGET_PAGE_SIZE);
- if (ret == -1) {
- fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
- rc = -1;
- } else if (ret > TARGET_PAGE_SIZE) {
- fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
- ret, TARGET_PAGE_SIZE);
- abort();
+ if (xbzrle_decode_buffer(xbzrle_decoded_buf, xh_len, host,
+ TARGET_PAGE_SIZE) == -1) {
+ error_report("Failed to load XBZRLE page - decode error!");
+ return -1;
}
- return rc;
+ return 0;
}
static inline void *host_from_stream_offset(QEMUFile *f,
uint8_t len;
if (flags & RAM_SAVE_FLAG_CONTINUE) {
- if (!block) {
- fprintf(stderr, "Ack, bad migration stream!\n");
+ if (!block || block->length <= offset) {
+ error_report("Ack, bad migration stream!");
return NULL;
}
id[len] = 0;
QTAILQ_FOREACH(block, &ram_list.blocks, next) {
- if (!strncmp(id, block->idstr, sizeof(id)))
+ if (!strncmp(id, block->idstr, sizeof(id)) && block->length > offset) {
return memory_region_get_ram_ptr(block->mr) + offset;
+ }
}
- fprintf(stderr, "Can't find block %s!\n", id);
+ error_report("Can't find block %s!", id);
return NULL;
}
static int ram_load(QEMUFile *f, void *opaque, int version_id)
{
- ram_addr_t addr;
- int flags, ret = 0;
- int error;
+ int flags = 0, ret = 0;
static uint64_t seq_iter;
seq_iter++;
if (version_id != 4) {
- return -EINVAL;
+ ret = -EINVAL;
}
- do {
- addr = qemu_get_be64(f);
+ while (!ret && !(flags & RAM_SAVE_FLAG_EOS)) {
+ ram_addr_t addr, total_ram_bytes;
+ void *host;
+ uint8_t ch;
+ addr = qemu_get_be64(f);
flags = addr & ~TARGET_PAGE_MASK;
addr &= TARGET_PAGE_MASK;
- if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
+ switch (flags & ~RAM_SAVE_FLAG_CONTINUE) {
+ case RAM_SAVE_FLAG_MEM_SIZE:
/* Synchronize RAM block list */
- char id[256];
- ram_addr_t length;
- ram_addr_t total_ram_bytes = addr;
-
- while (total_ram_bytes) {
+ total_ram_bytes = addr;
+ while (!ret && total_ram_bytes) {
RAMBlock *block;
uint8_t len;
+ char id[256];
+ ram_addr_t length;
len = qemu_get_byte(f);
qemu_get_buffer(f, (uint8_t *)id, len);
QTAILQ_FOREACH(block, &ram_list.blocks, next) {
if (!strncmp(id, block->idstr, sizeof(id))) {
if (block->length != length) {
- fprintf(stderr,
- "Length mismatch: %s: " RAM_ADDR_FMT
- " in != " RAM_ADDR_FMT "\n", id, length,
- block->length);
+ error_report("Length mismatch: %s: 0x" RAM_ADDR_FMT
+ " in != 0x" RAM_ADDR_FMT, id, length,
+ block->length);
ret = -EINVAL;
- goto done;
}
break;
}
}
if (!block) {
- fprintf(stderr, "Unknown ramblock \"%s\", cannot "
- "accept migration\n", id);
+ error_report("Unknown ramblock \"%s\", cannot "
+ "accept migration", id);
ret = -EINVAL;
- goto done;
}
total_ram_bytes -= length;
}
- }
-
- if (flags & RAM_SAVE_FLAG_COMPRESS) {
- void *host;
- uint8_t ch;
-
+ break;
+ case RAM_SAVE_FLAG_COMPRESS:
host = host_from_stream_offset(f, addr, flags);
if (!host) {
- return -EINVAL;
+ error_report("Illegal RAM offset " RAM_ADDR_FMT, addr);
+ ret = -EINVAL;
+ break;
}
ch = qemu_get_byte(f);
ram_handle_compressed(host, ch, TARGET_PAGE_SIZE);
- } else if (flags & RAM_SAVE_FLAG_PAGE) {
- void *host;
-
+ break;
+ case RAM_SAVE_FLAG_PAGE:
host = host_from_stream_offset(f, addr, flags);
if (!host) {
- return -EINVAL;
+ error_report("Illegal RAM offset " RAM_ADDR_FMT, addr);
+ ret = -EINVAL;
+ break;
}
qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
- } else if (flags & RAM_SAVE_FLAG_XBZRLE) {
- void *host = host_from_stream_offset(f, addr, flags);
+ break;
+ case RAM_SAVE_FLAG_XBZRLE:
+ host = host_from_stream_offset(f, addr, flags);
if (!host) {
- return -EINVAL;
+ error_report("Illegal RAM offset " RAM_ADDR_FMT, addr);
+ ret = -EINVAL;
+ break;
}
if (load_xbzrle(f, addr, host) < 0) {
+ error_report("Failed to decompress XBZRLE page at "
+ RAM_ADDR_FMT, addr);
+ ret = -EINVAL;
+ break;
+ }
+ break;
+ case RAM_SAVE_FLAG_EOS:
+ /* normal exit */
+ break;
+ default:
+ if (flags & RAM_SAVE_FLAG_HOOK) {
+ ram_control_load_hook(f, flags);
+ } else {
+ error_report("Unknown combination of migration flags: %#x",
+ flags);
ret = -EINVAL;
- goto done;
}
- } else if (flags & RAM_SAVE_FLAG_HOOK) {
- ram_control_load_hook(f, flags);
}
- error = qemu_file_get_error(f);
- if (error) {
- ret = error;
- goto done;
+ if (!ret) {
+ ret = qemu_file_get_error(f);
}
- } while (!(flags & RAM_SAVE_FLAG_EOS));
+ }
-done:
DPRINTF("Completed load of VM with exit code %d seq iteration "
"%" PRIu64 "\n", ret, seq_iter);
return ret;
if (!c->name) {
if (l > 80) {
- fprintf(stderr,
- "Unknown sound card name (too big to show)\n");
+ error_report("Unknown sound card name (too big to show)");
}
else {
- fprintf(stderr, "Unknown sound card name `%.*s'\n",
- (int) l, p);
+ error_report("Unknown sound card name `%.*s'",
+ (int) l, p);
}
bad_card = 1;
}
if (c->enabled) {
if (c->isa) {
if (!isa_bus) {
- fprintf(stderr, "ISA bus not available for %s\n", c->name);
+ error_report("ISA bus not available for %s", c->name);
exit(1);
}
c->init.init_isa(isa_bus);
} else {
if (!pci_bus) {
- fprintf(stderr, "PCI bus not available for %s\n", c->name);
+ error_report("PCI bus not available for %s", c->name);
exit(1);
}
c->init.init_pci(pci_bus);
#endif
}
-int tcg_available(void)
-{
- return 1;
-}
-
int kvm_available(void)
{
#ifdef CONFIG_KVM
projects / mirror_qemu.git / blobdiff