4 * Copyright (c) 2003-2008 Fabrice Bellard
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 deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #include <sys/types.h>
32 #include "monitor/monitor.h"
33 #include "sysemu/sysemu.h"
34 #include "qemu/bitops.h"
35 #include "qemu/bitmap.h"
36 #include "sysemu/arch_init.h"
37 #include "audio/audio.h"
39 #include "hw/pci/pci.h"
40 #include "hw/audiodev.h"
41 #include "sysemu/kvm.h"
42 #include "migration/migration.h"
43 #include "exec/gdbstub.h"
44 #include "hw/smbios.h"
45 #include "exec/address-spaces.h"
47 #include "migration/page_cache.h"
48 #include "qemu/config-file.h"
49 #include "qmp-commands.h"
51 #include "exec/cpu-all.h"
53 #ifdef DEBUG_ARCH_INIT
54 #define DPRINTF(fmt, ...) \
55 do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
57 #define DPRINTF(fmt, ...) \
62 int graphic_width
= 1024;
63 int graphic_height
= 768;
64 int graphic_depth
= 8;
66 int graphic_width
= 800;
67 int graphic_height
= 600;
68 int graphic_depth
= 15;
72 #if defined(TARGET_ALPHA)
73 #define QEMU_ARCH QEMU_ARCH_ALPHA
74 #elif defined(TARGET_ARM)
75 #define QEMU_ARCH QEMU_ARCH_ARM
76 #elif defined(TARGET_CRIS)
77 #define QEMU_ARCH QEMU_ARCH_CRIS
78 #elif defined(TARGET_I386)
79 #define QEMU_ARCH QEMU_ARCH_I386
80 #elif defined(TARGET_M68K)
81 #define QEMU_ARCH QEMU_ARCH_M68K
82 #elif defined(TARGET_LM32)
83 #define QEMU_ARCH QEMU_ARCH_LM32
84 #elif defined(TARGET_MICROBLAZE)
85 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
86 #elif defined(TARGET_MIPS)
87 #define QEMU_ARCH QEMU_ARCH_MIPS
88 #elif defined(TARGET_OPENRISC)
89 #define QEMU_ARCH QEMU_ARCH_OPENRISC
90 #elif defined(TARGET_PPC)
91 #define QEMU_ARCH QEMU_ARCH_PPC
92 #elif defined(TARGET_S390X)
93 #define QEMU_ARCH QEMU_ARCH_S390X
94 #elif defined(TARGET_SH4)
95 #define QEMU_ARCH QEMU_ARCH_SH4
96 #elif defined(TARGET_SPARC)
97 #define QEMU_ARCH QEMU_ARCH_SPARC
98 #elif defined(TARGET_XTENSA)
99 #define QEMU_ARCH QEMU_ARCH_XTENSA
100 #elif defined(TARGET_UNICORE32)
101 #define QEMU_ARCH QEMU_ARCH_UNICORE32
104 const uint32_t arch_type
= QEMU_ARCH
;
106 /***********************************************************/
107 /* ram save/restore */
109 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
110 #define RAM_SAVE_FLAG_COMPRESS 0x02
111 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
112 #define RAM_SAVE_FLAG_PAGE 0x08
113 #define RAM_SAVE_FLAG_EOS 0x10
114 #define RAM_SAVE_FLAG_CONTINUE 0x20
115 #define RAM_SAVE_FLAG_XBZRLE 0x40
119 #define VECTYPE vector unsigned char
120 #define SPLAT(p) vec_splat(vec_ld(0, p), 0)
121 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
122 /* altivec.h may redefine the bool macro as vector type.
123 * Reset it to POSIX semantics. */
126 #elif defined __SSE2__
127 #include <emmintrin.h>
128 #define VECTYPE __m128i
129 #define SPLAT(p) _mm_set1_epi8(*(p))
130 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
132 #define VECTYPE unsigned long
133 #define SPLAT(p) (*(p) * (~0UL / 255))
134 #define ALL_EQ(v1, v2) ((v1) == (v2))
138 static struct defconfig_file
{
139 const char *filename
;
140 /* Indicates it is an user config file (disabled by -no-user-config) */
142 } default_config_files
[] = {
143 { CONFIG_QEMU_CONFDIR
"/qemu.conf", true },
144 { CONFIG_QEMU_CONFDIR
"/target-" TARGET_ARCH
".conf", true },
145 { NULL
}, /* end of list */
149 int qemu_read_default_config_files(bool userconfig
)
152 struct defconfig_file
*f
;
154 for (f
= default_config_files
; f
->filename
; f
++) {
155 if (!userconfig
&& f
->userconfig
) {
158 ret
= qemu_read_config_file(f
->filename
);
159 if (ret
< 0 && ret
!= -ENOENT
) {
167 static int is_dup_page(uint8_t *page
)
169 VECTYPE
*p
= (VECTYPE
*)page
;
170 VECTYPE val
= SPLAT(page
);
173 for (i
= 0; i
< TARGET_PAGE_SIZE
/ sizeof(VECTYPE
); i
++) {
174 if (!ALL_EQ(val
, p
[i
])) {
182 /* struct contains XBZRLE cache and a static page
183 used by the compression */
185 /* buffer used for XBZRLE encoding */
186 uint8_t *encoded_buf
;
187 /* buffer for storing page content */
188 uint8_t *current_buf
;
189 /* buffer used for XBZRLE decoding */
190 uint8_t *decoded_buf
;
191 /* Cache for XBZRLE */
201 int64_t xbzrle_cache_resize(int64_t new_size
)
203 if (XBZRLE
.cache
!= NULL
) {
204 return cache_resize(XBZRLE
.cache
, new_size
/ TARGET_PAGE_SIZE
) *
207 return pow2floor(new_size
);
210 /* accounting for migration statistics */
211 typedef struct AccountingInfo
{
215 uint64_t xbzrle_bytes
;
216 uint64_t xbzrle_pages
;
217 uint64_t xbzrle_cache_miss
;
218 uint64_t xbzrle_overflows
;
221 static AccountingInfo acct_info
;
223 static void acct_clear(void)
225 memset(&acct_info
, 0, sizeof(acct_info
));
228 uint64_t dup_mig_bytes_transferred(void)
230 return acct_info
.dup_pages
* TARGET_PAGE_SIZE
;
233 uint64_t dup_mig_pages_transferred(void)
235 return acct_info
.dup_pages
;
238 uint64_t norm_mig_bytes_transferred(void)
240 return acct_info
.norm_pages
* TARGET_PAGE_SIZE
;
243 uint64_t norm_mig_pages_transferred(void)
245 return acct_info
.norm_pages
;
248 uint64_t xbzrle_mig_bytes_transferred(void)
250 return acct_info
.xbzrle_bytes
;
253 uint64_t xbzrle_mig_pages_transferred(void)
255 return acct_info
.xbzrle_pages
;
258 uint64_t xbzrle_mig_pages_cache_miss(void)
260 return acct_info
.xbzrle_cache_miss
;
263 uint64_t xbzrle_mig_pages_overflow(void)
265 return acct_info
.xbzrle_overflows
;
268 static void save_block_hdr(QEMUFile
*f
, RAMBlock
*block
, ram_addr_t offset
,
271 qemu_put_be64(f
, offset
| cont
| flag
);
273 qemu_put_byte(f
, strlen(block
->idstr
));
274 qemu_put_buffer(f
, (uint8_t *)block
->idstr
,
275 strlen(block
->idstr
));
280 #define ENCODING_FLAG_XBZRLE 0x1
282 static int save_xbzrle_page(QEMUFile
*f
, uint8_t *current_data
,
283 ram_addr_t current_addr
, RAMBlock
*block
,
284 ram_addr_t offset
, int cont
, bool last_stage
)
286 int encoded_len
= 0, bytes_sent
= -1;
287 uint8_t *prev_cached_page
;
289 if (!cache_is_cached(XBZRLE
.cache
, current_addr
)) {
291 cache_insert(XBZRLE
.cache
, current_addr
,
292 g_memdup(current_data
, TARGET_PAGE_SIZE
));
294 acct_info
.xbzrle_cache_miss
++;
298 prev_cached_page
= get_cached_data(XBZRLE
.cache
, current_addr
);
300 /* save current buffer into memory */
301 memcpy(XBZRLE
.current_buf
, current_data
, TARGET_PAGE_SIZE
);
303 /* XBZRLE encoding (if there is no overflow) */
304 encoded_len
= xbzrle_encode_buffer(prev_cached_page
, XBZRLE
.current_buf
,
305 TARGET_PAGE_SIZE
, XBZRLE
.encoded_buf
,
307 if (encoded_len
== 0) {
308 DPRINTF("Skipping unmodified page\n");
310 } else if (encoded_len
== -1) {
311 DPRINTF("Overflow\n");
312 acct_info
.xbzrle_overflows
++;
313 /* update data in the cache */
314 memcpy(prev_cached_page
, current_data
, TARGET_PAGE_SIZE
);
318 /* we need to update the data in the cache, in order to get the same data */
320 memcpy(prev_cached_page
, XBZRLE
.current_buf
, TARGET_PAGE_SIZE
);
323 /* Send XBZRLE based compressed page */
324 save_block_hdr(f
, block
, offset
, cont
, RAM_SAVE_FLAG_XBZRLE
);
325 qemu_put_byte(f
, ENCODING_FLAG_XBZRLE
);
326 qemu_put_be16(f
, encoded_len
);
327 qemu_put_buffer(f
, XBZRLE
.encoded_buf
, encoded_len
);
328 bytes_sent
= encoded_len
+ 1 + 2;
329 acct_info
.xbzrle_pages
++;
330 acct_info
.xbzrle_bytes
+= bytes_sent
;
335 static RAMBlock
*last_block
;
336 static ram_addr_t last_offset
;
337 static unsigned long *migration_bitmap
;
338 static uint64_t migration_dirty_pages
;
340 static inline bool migration_bitmap_test_and_reset_dirty(MemoryRegion
*mr
,
344 int nr
= (mr
->ram_addr
+ offset
) >> TARGET_PAGE_BITS
;
346 ret
= test_and_clear_bit(nr
, migration_bitmap
);
349 migration_dirty_pages
--;
354 static inline bool migration_bitmap_set_dirty(MemoryRegion
*mr
,
358 int nr
= (mr
->ram_addr
+ offset
) >> TARGET_PAGE_BITS
;
360 ret
= test_and_set_bit(nr
, migration_bitmap
);
363 migration_dirty_pages
++;
368 static void migration_bitmap_sync(void)
372 uint64_t num_dirty_pages_init
= migration_dirty_pages
;
373 MigrationState
*s
= migrate_get_current();
374 static int64_t start_time
;
375 static int64_t num_dirty_pages_period
;
379 start_time
= qemu_get_clock_ms(rt_clock
);
382 trace_migration_bitmap_sync_start();
383 memory_global_sync_dirty_bitmap(get_system_memory());
385 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
) {
386 for (addr
= 0; addr
< block
->length
; addr
+= TARGET_PAGE_SIZE
) {
387 if (memory_region_get_dirty(block
->mr
, addr
, TARGET_PAGE_SIZE
,
388 DIRTY_MEMORY_MIGRATION
)) {
389 migration_bitmap_set_dirty(block
->mr
, addr
);
392 memory_region_reset_dirty(block
->mr
, 0, block
->length
,
393 DIRTY_MEMORY_MIGRATION
);
395 trace_migration_bitmap_sync_end(migration_dirty_pages
396 - num_dirty_pages_init
);
397 num_dirty_pages_period
+= migration_dirty_pages
- num_dirty_pages_init
;
398 end_time
= qemu_get_clock_ms(rt_clock
);
400 /* more than 1 second = 1000 millisecons */
401 if (end_time
> start_time
+ 1000) {
402 s
->dirty_pages_rate
= num_dirty_pages_period
* 1000
403 / (end_time
- start_time
);
404 start_time
= end_time
;
405 num_dirty_pages_period
= 0;
411 * ram_save_block: Writes a page of memory to the stream f
413 * Returns: 0: if the page hasn't changed
414 * -1: if there are no more dirty pages
415 * n: the amount of bytes written in other case
418 static int ram_save_block(QEMUFile
*f
, bool last_stage
)
420 RAMBlock
*block
= last_block
;
421 ram_addr_t offset
= last_offset
;
424 ram_addr_t current_addr
;
427 block
= QTAILQ_FIRST(&ram_list
.blocks
);
431 if (migration_bitmap_test_and_reset_dirty(mr
, offset
)) {
433 int cont
= (block
== last_block
) ? RAM_SAVE_FLAG_CONTINUE
: 0;
435 p
= memory_region_get_ram_ptr(mr
) + offset
;
437 if (is_dup_page(p
)) {
438 acct_info
.dup_pages
++;
439 save_block_hdr(f
, block
, offset
, cont
, RAM_SAVE_FLAG_COMPRESS
);
440 qemu_put_byte(f
, *p
);
442 } else if (migrate_use_xbzrle()) {
443 current_addr
= block
->offset
+ offset
;
444 bytes_sent
= save_xbzrle_page(f
, p
, current_addr
, block
,
445 offset
, cont
, last_stage
);
447 p
= get_cached_data(XBZRLE
.cache
, current_addr
);
451 /* either we didn't send yet (we may have had XBZRLE overflow) */
452 if (bytes_sent
== -1) {
453 save_block_hdr(f
, block
, offset
, cont
, RAM_SAVE_FLAG_PAGE
);
454 qemu_put_buffer(f
, p
, TARGET_PAGE_SIZE
);
455 bytes_sent
= TARGET_PAGE_SIZE
;
456 acct_info
.norm_pages
++;
459 /* if page is unmodified, continue to the next */
460 if (bytes_sent
!= 0) {
465 offset
+= TARGET_PAGE_SIZE
;
466 if (offset
>= block
->length
) {
468 block
= QTAILQ_NEXT(block
, next
);
470 block
= QTAILQ_FIRST(&ram_list
.blocks
);
472 } while (block
!= last_block
|| offset
!= last_offset
);
475 last_offset
= offset
;
480 static uint64_t bytes_transferred
;
482 static ram_addr_t
ram_save_remaining(void)
484 return migration_dirty_pages
;
487 uint64_t ram_bytes_remaining(void)
489 return ram_save_remaining() * TARGET_PAGE_SIZE
;
492 uint64_t ram_bytes_transferred(void)
494 return bytes_transferred
;
497 uint64_t ram_bytes_total(void)
502 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
)
503 total
+= block
->length
;
508 static int block_compar(const void *a
, const void *b
)
510 RAMBlock
* const *ablock
= a
;
511 RAMBlock
* const *bblock
= b
;
513 return strcmp((*ablock
)->idstr
, (*bblock
)->idstr
);
516 static void sort_ram_list(void)
518 RAMBlock
*block
, *nblock
, **blocks
;
521 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
) {
524 blocks
= g_malloc(n
* sizeof *blocks
);
526 QTAILQ_FOREACH_SAFE(block
, &ram_list
.blocks
, next
, nblock
) {
528 QTAILQ_REMOVE(&ram_list
.blocks
, block
, next
);
530 qsort(blocks
, n
, sizeof *blocks
, block_compar
);
532 QTAILQ_INSERT_HEAD(&ram_list
.blocks
, blocks
[n
], next
);
537 static void migration_end(void)
539 if (migration_bitmap
) {
540 memory_global_dirty_log_stop();
541 g_free(migration_bitmap
);
542 migration_bitmap
= NULL
;
546 cache_fini(XBZRLE
.cache
);
547 g_free(XBZRLE
.cache
);
548 g_free(XBZRLE
.encoded_buf
);
549 g_free(XBZRLE
.current_buf
);
550 g_free(XBZRLE
.decoded_buf
);
555 static void ram_migration_cancel(void *opaque
)
561 static void reset_ram_globals(void)
568 #define MAX_WAIT 50 /* ms, half buffered_file limit */
570 static int ram_save_setup(QEMUFile
*f
, void *opaque
)
573 int64_t ram_pages
= last_ram_offset() >> TARGET_PAGE_BITS
;
575 migration_bitmap
= bitmap_new(ram_pages
);
576 bitmap_set(migration_bitmap
, 0, ram_pages
);
577 migration_dirty_pages
= ram_pages
;
579 bytes_transferred
= 0;
582 if (migrate_use_xbzrle()) {
583 XBZRLE
.cache
= cache_init(migrate_xbzrle_cache_size() /
587 DPRINTF("Error creating cache\n");
590 XBZRLE
.encoded_buf
= g_malloc0(TARGET_PAGE_SIZE
);
591 XBZRLE
.current_buf
= g_malloc(TARGET_PAGE_SIZE
);
595 memory_global_dirty_log_start();
596 migration_bitmap_sync();
598 qemu_put_be64(f
, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE
);
600 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
) {
601 qemu_put_byte(f
, strlen(block
->idstr
));
602 qemu_put_buffer(f
, (uint8_t *)block
->idstr
, strlen(block
->idstr
));
603 qemu_put_be64(f
, block
->length
);
606 qemu_put_be64(f
, RAM_SAVE_FLAG_EOS
);
611 static int ram_save_iterate(QEMUFile
*f
, void *opaque
)
613 uint64_t bytes_transferred_last
;
617 uint64_t expected_downtime
;
618 MigrationState
*s
= migrate_get_current();
620 bytes_transferred_last
= bytes_transferred
;
621 bwidth
= qemu_get_clock_ns(rt_clock
);
624 while ((ret
= qemu_file_rate_limit(f
)) == 0) {
627 bytes_sent
= ram_save_block(f
, false);
628 /* no more blocks to sent */
629 if (bytes_sent
< 0) {
632 bytes_transferred
+= bytes_sent
;
633 acct_info
.iterations
++;
634 /* we want to check in the 1st loop, just in case it was the 1st time
635 and we had to sync the dirty bitmap.
636 qemu_get_clock_ns() is a bit expensive, so we only check each some
640 uint64_t t1
= (qemu_get_clock_ns(rt_clock
) - bwidth
) / 1000000;
642 DPRINTF("big wait: %" PRIu64
" milliseconds, %d iterations\n",
654 bwidth
= qemu_get_clock_ns(rt_clock
) - bwidth
;
655 bwidth
= (bytes_transferred
- bytes_transferred_last
) / bwidth
;
657 /* if we haven't transferred anything this round, force
658 * expected_downtime to a very high value, but without
664 qemu_put_be64(f
, RAM_SAVE_FLAG_EOS
);
666 expected_downtime
= ram_save_remaining() * TARGET_PAGE_SIZE
/ bwidth
;
667 DPRINTF("ram_save_live: expected(%" PRIu64
") <= max(" PRIu64
")?\n",
668 expected_downtime
, migrate_max_downtime());
670 if (expected_downtime
<= migrate_max_downtime()) {
671 migration_bitmap_sync();
672 expected_downtime
= ram_save_remaining() * TARGET_PAGE_SIZE
/ bwidth
;
673 s
->expected_downtime
= expected_downtime
/ 1000000; /* ns -> ms */
675 return expected_downtime
<= migrate_max_downtime();
680 static int ram_save_complete(QEMUFile
*f
, void *opaque
)
682 migration_bitmap_sync();
684 /* try transferring iterative blocks of memory */
686 /* flush all remaining blocks regardless of rate limiting */
690 bytes_sent
= ram_save_block(f
, true);
691 /* no more blocks to sent */
692 if (bytes_sent
< 0) {
695 bytes_transferred
+= bytes_sent
;
699 qemu_put_be64(f
, RAM_SAVE_FLAG_EOS
);
704 static int load_xbzrle(QEMUFile
*f
, ram_addr_t addr
, void *host
)
710 if (!XBZRLE
.decoded_buf
) {
711 XBZRLE
.decoded_buf
= g_malloc(TARGET_PAGE_SIZE
);
714 /* extract RLE header */
715 xh_flags
= qemu_get_byte(f
);
716 xh_len
= qemu_get_be16(f
);
718 if (xh_flags
!= ENCODING_FLAG_XBZRLE
) {
719 fprintf(stderr
, "Failed to load XBZRLE page - wrong compression!\n");
723 if (xh_len
> TARGET_PAGE_SIZE
) {
724 fprintf(stderr
, "Failed to load XBZRLE page - len overflow!\n");
727 /* load data and decode */
728 qemu_get_buffer(f
, XBZRLE
.decoded_buf
, xh_len
);
731 ret
= xbzrle_decode_buffer(XBZRLE
.decoded_buf
, xh_len
, host
,
734 fprintf(stderr
, "Failed to load XBZRLE page - decode error!\n");
736 } else if (ret
> TARGET_PAGE_SIZE
) {
737 fprintf(stderr
, "Failed to load XBZRLE page - size %d exceeds %d!\n",
738 ret
, TARGET_PAGE_SIZE
);
745 static inline void *host_from_stream_offset(QEMUFile
*f
,
749 static RAMBlock
*block
= NULL
;
753 if (flags
& RAM_SAVE_FLAG_CONTINUE
) {
755 fprintf(stderr
, "Ack, bad migration stream!\n");
759 return memory_region_get_ram_ptr(block
->mr
) + offset
;
762 len
= qemu_get_byte(f
);
763 qemu_get_buffer(f
, (uint8_t *)id
, len
);
766 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
) {
767 if (!strncmp(id
, block
->idstr
, sizeof(id
)))
768 return memory_region_get_ram_ptr(block
->mr
) + offset
;
771 fprintf(stderr
, "Can't find block %s!\n", id
);
775 static int ram_load(QEMUFile
*f
, void *opaque
, int version_id
)
780 static uint64_t seq_iter
;
784 if (version_id
< 4 || version_id
> 4) {
789 addr
= qemu_get_be64(f
);
791 flags
= addr
& ~TARGET_PAGE_MASK
;
792 addr
&= TARGET_PAGE_MASK
;
794 if (flags
& RAM_SAVE_FLAG_MEM_SIZE
) {
795 if (version_id
== 4) {
796 /* Synchronize RAM block list */
799 ram_addr_t total_ram_bytes
= addr
;
801 while (total_ram_bytes
) {
805 len
= qemu_get_byte(f
);
806 qemu_get_buffer(f
, (uint8_t *)id
, len
);
808 length
= qemu_get_be64(f
);
810 QTAILQ_FOREACH(block
, &ram_list
.blocks
, next
) {
811 if (!strncmp(id
, block
->idstr
, sizeof(id
))) {
812 if (block
->length
!= length
) {
821 fprintf(stderr
, "Unknown ramblock \"%s\", cannot "
822 "accept migration\n", id
);
827 total_ram_bytes
-= length
;
832 if (flags
& RAM_SAVE_FLAG_COMPRESS
) {
836 host
= host_from_stream_offset(f
, addr
, flags
);
841 ch
= qemu_get_byte(f
);
842 memset(host
, ch
, TARGET_PAGE_SIZE
);
845 (!kvm_enabled() || kvm_has_sync_mmu()) &&
846 getpagesize() <= TARGET_PAGE_SIZE
) {
847 qemu_madvise(host
, TARGET_PAGE_SIZE
, QEMU_MADV_DONTNEED
);
850 } else if (flags
& RAM_SAVE_FLAG_PAGE
) {
853 host
= host_from_stream_offset(f
, addr
, flags
);
858 qemu_get_buffer(f
, host
, TARGET_PAGE_SIZE
);
859 } else if (flags
& RAM_SAVE_FLAG_XBZRLE
) {
860 if (!migrate_use_xbzrle()) {
863 void *host
= host_from_stream_offset(f
, addr
, flags
);
868 if (load_xbzrle(f
, addr
, host
) < 0) {
873 error
= qemu_file_get_error(f
);
878 } while (!(flags
& RAM_SAVE_FLAG_EOS
));
881 DPRINTF("Completed load of VM with exit code %d seq iteration "
882 "%" PRIu64
"\n", ret
, seq_iter
);
886 SaveVMHandlers savevm_ram_handlers
= {
887 .save_live_setup
= ram_save_setup
,
888 .save_live_iterate
= ram_save_iterate
,
889 .save_live_complete
= ram_save_complete
,
890 .load_state
= ram_load
,
891 .cancel
= ram_migration_cancel
,
901 int (*init_isa
) (ISABus
*bus
);
902 int (*init_pci
) (PCIBus
*bus
);
906 static struct soundhw soundhw
[] = {
907 #ifdef HAS_AUDIO_CHOICE
914 { .init_isa
= pcspk_audio_init
}
921 "Creative Sound Blaster 16",
924 { .init_isa
= SB16_init
}
928 #ifdef CONFIG_CS4231A
934 { .init_isa
= cs4231a_init
}
942 "Yamaha YMF262 (OPL3)",
944 "Yamaha YM3812 (OPL2)",
948 { .init_isa
= Adlib_init
}
955 "Gravis Ultrasound GF1",
958 { .init_isa
= GUS_init
}
965 "Intel 82801AA AC97 Audio",
968 { .init_pci
= ac97_init
}
975 "ENSONIQ AudioPCI ES1370",
978 { .init_pci
= es1370_init
}
988 { .init_pci
= intel_hda_and_codec_init
}
992 #endif /* HAS_AUDIO_CHOICE */
994 { NULL
, NULL
, 0, 0, { NULL
} }
997 void select_soundhw(const char *optarg
)
1001 if (is_help_option(optarg
)) {
1004 #ifdef HAS_AUDIO_CHOICE
1005 printf("Valid sound card names (comma separated):\n");
1006 for (c
= soundhw
; c
->name
; ++c
) {
1007 printf ("%-11s %s\n", c
->name
, c
->descr
);
1009 printf("\n-soundhw all will enable all of the above\n");
1011 printf("Machine has no user-selectable audio hardware "
1012 "(it may or may not have always-present audio hardware).\n");
1014 exit(!is_help_option(optarg
));
1022 if (!strcmp(optarg
, "all")) {
1023 for (c
= soundhw
; c
->name
; ++c
) {
1032 l
= !e
? strlen(p
) : (size_t) (e
- p
);
1034 for (c
= soundhw
; c
->name
; ++c
) {
1035 if (!strncmp(c
->name
, p
, l
) && !c
->name
[l
]) {
1044 "Unknown sound card name (too big to show)\n");
1047 fprintf(stderr
, "Unknown sound card name `%.*s'\n",
1052 p
+= l
+ (e
!= NULL
);
1056 goto show_valid_cards
;
1061 void audio_init(ISABus
*isa_bus
, PCIBus
*pci_bus
)
1065 for (c
= soundhw
; c
->name
; ++c
) {
1069 c
->init
.init_isa(isa_bus
);
1073 c
->init
.init_pci(pci_bus
);
1080 void select_soundhw(const char *optarg
)
1083 void audio_init(ISABus
*isa_bus
, PCIBus
*pci_bus
)
1088 int qemu_uuid_parse(const char *str
, uint8_t *uuid
)
1092 if (strlen(str
) != 36) {
1096 ret
= sscanf(str
, UUID_FMT
, &uuid
[0], &uuid
[1], &uuid
[2], &uuid
[3],
1097 &uuid
[4], &uuid
[5], &uuid
[6], &uuid
[7], &uuid
[8], &uuid
[9],
1098 &uuid
[10], &uuid
[11], &uuid
[12], &uuid
[13], &uuid
[14],
1105 smbios_add_field(1, offsetof(struct smbios_type_1
, uuid
), 16, uuid
);
1110 void do_acpitable_option(const char *optarg
)
1113 if (acpi_table_add(optarg
) < 0) {
1114 fprintf(stderr
, "Wrong acpi table provided\n");
1120 void do_smbios_option(const char *optarg
)
1123 if (smbios_entry_add(optarg
) < 0) {
1124 fprintf(stderr
, "Wrong smbios provided\n");
1130 void cpudef_init(void)
1132 #if defined(cpudef_setup)
1133 cpudef_setup(); /* parse cpu definitions in target config file */
1137 int audio_available(void)
1146 int tcg_available(void)
1151 int kvm_available(void)
1160 int xen_available(void)
1170 TargetInfo
*qmp_query_target(Error
**errp
)
1172 TargetInfo
*info
= g_malloc0(sizeof(*info
));
1174 info
->arch
= TARGET_TYPE
;