Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 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: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 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 |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | #include <stdint.h> |
| 25 | #include <stdarg.h> |
Michael S. Tsirkin | b2e0a13 | 2010-11-22 19:52:34 +0200 | [diff] [blame] | 26 | #include <stdlib.h> |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 27 | #ifndef _WIN32 |
Blue Swirl | 1c47cb1 | 2010-03-30 19:27:34 +0000 | [diff] [blame] | 28 | #include <sys/types.h> |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 29 | #include <sys/mman.h> |
| 30 | #endif |
| 31 | #include "config.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 32 | #include "monitor/monitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 33 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 34 | #include "qemu/bitops.h" |
| 35 | #include "qemu/bitmap.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 36 | #include "sysemu/arch_init.h" |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 37 | #include "audio/audio.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 38 | #include "hw/i386/pc.h" |
Michael S. Tsirkin | a2cb15b | 2012-12-12 14:24:50 +0200 | [diff] [blame] | 39 | #include "hw/pci/pci.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 40 | #include "hw/audio/audio.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 41 | #include "sysemu/kvm.h" |
Paolo Bonzini | caf71f8 | 2012-12-17 18:19:50 +0100 | [diff] [blame] | 42 | #include "migration/migration.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 43 | #include "hw/i386/smbios.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 44 | #include "exec/address-spaces.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 45 | #include "hw/audio/pcspk.h" |
Paolo Bonzini | caf71f8 | 2012-12-17 18:19:50 +0100 | [diff] [blame] | 46 | #include "migration/page_cache.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 47 | #include "qemu/config-file.h" |
Daniel P. Berrange | 99afc91 | 2012-08-20 15:31:38 +0100 | [diff] [blame] | 48 | #include "qmp-commands.h" |
Juan Quintela | 3c12193 | 2012-09-04 13:08:57 +0200 | [diff] [blame] | 49 | #include "trace.h" |
Paolo Bonzini | 0d6d3c8 | 2012-11-14 15:45:02 +0100 | [diff] [blame] | 50 | #include "exec/cpu-all.h" |
Juan Quintela | 12291ec | 2013-10-14 17:14:47 +0200 | [diff] [blame] | 51 | #include "exec/ram_addr.h" |
Michael S. Tsirkin | 0445259 | 2013-04-15 09:19:22 +0300 | [diff] [blame] | 52 | #include "hw/acpi/acpi.h" |
Juan Quintela | aa8dc04 | 2013-11-06 11:33:05 +0100 | [diff] [blame] | 53 | #include "qemu/host-utils.h" |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 54 | |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 55 | #ifdef DEBUG_ARCH_INIT |
| 56 | #define DPRINTF(fmt, ...) \ |
| 57 | do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0) |
| 58 | #else |
| 59 | #define DPRINTF(fmt, ...) \ |
| 60 | do { } while (0) |
| 61 | #endif |
| 62 | |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 63 | #ifdef TARGET_SPARC |
| 64 | int graphic_width = 1024; |
| 65 | int graphic_height = 768; |
| 66 | int graphic_depth = 8; |
| 67 | #else |
| 68 | int graphic_width = 800; |
| 69 | int graphic_height = 600; |
Alexander Graf | f1ff0e8 | 2013-06-20 14:06:27 +0200 | [diff] [blame] | 70 | int graphic_depth = 32; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 71 | #endif |
| 72 | |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 73 | |
| 74 | #if defined(TARGET_ALPHA) |
| 75 | #define QEMU_ARCH QEMU_ARCH_ALPHA |
| 76 | #elif defined(TARGET_ARM) |
| 77 | #define QEMU_ARCH QEMU_ARCH_ARM |
| 78 | #elif defined(TARGET_CRIS) |
| 79 | #define QEMU_ARCH QEMU_ARCH_CRIS |
| 80 | #elif defined(TARGET_I386) |
| 81 | #define QEMU_ARCH QEMU_ARCH_I386 |
| 82 | #elif defined(TARGET_M68K) |
| 83 | #define QEMU_ARCH QEMU_ARCH_M68K |
Michael Walle | 81ea0e1 | 2011-02-17 23:45:02 +0100 | [diff] [blame] | 84 | #elif defined(TARGET_LM32) |
| 85 | #define QEMU_ARCH QEMU_ARCH_LM32 |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 86 | #elif defined(TARGET_MICROBLAZE) |
| 87 | #define QEMU_ARCH QEMU_ARCH_MICROBLAZE |
| 88 | #elif defined(TARGET_MIPS) |
| 89 | #define QEMU_ARCH QEMU_ARCH_MIPS |
Anthony Green | d15a9c2 | 2013-03-18 15:49:25 -0400 | [diff] [blame] | 90 | #elif defined(TARGET_MOXIE) |
| 91 | #define QEMU_ARCH QEMU_ARCH_MOXIE |
Jia Liu | e67db06 | 2012-07-20 15:50:39 +0800 | [diff] [blame] | 92 | #elif defined(TARGET_OPENRISC) |
| 93 | #define QEMU_ARCH QEMU_ARCH_OPENRISC |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 94 | #elif defined(TARGET_PPC) |
| 95 | #define QEMU_ARCH QEMU_ARCH_PPC |
| 96 | #elif defined(TARGET_S390X) |
| 97 | #define QEMU_ARCH QEMU_ARCH_S390X |
| 98 | #elif defined(TARGET_SH4) |
| 99 | #define QEMU_ARCH QEMU_ARCH_SH4 |
| 100 | #elif defined(TARGET_SPARC) |
| 101 | #define QEMU_ARCH QEMU_ARCH_SPARC |
Max Filippov | 2328826 | 2011-09-06 03:55:25 +0400 | [diff] [blame] | 102 | #elif defined(TARGET_XTENSA) |
| 103 | #define QEMU_ARCH QEMU_ARCH_XTENSA |
Guan Xuetao | 4f23a1e | 2012-08-10 14:42:21 +0800 | [diff] [blame] | 104 | #elif defined(TARGET_UNICORE32) |
| 105 | #define QEMU_ARCH QEMU_ARCH_UNICORE32 |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 106 | #endif |
| 107 | |
| 108 | const uint32_t arch_type = QEMU_ARCH; |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 109 | static bool mig_throttle_on; |
| 110 | static int dirty_rate_high_cnt; |
| 111 | static void check_guest_throttling(void); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 112 | |
| 113 | /***********************************************************/ |
| 114 | /* ram save/restore */ |
| 115 | |
Yoshiaki Tamura | d20878d | 2010-08-18 13:30:12 +0900 | [diff] [blame] | 116 | #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */ |
| 117 | #define RAM_SAVE_FLAG_COMPRESS 0x02 |
| 118 | #define RAM_SAVE_FLAG_MEM_SIZE 0x04 |
| 119 | #define RAM_SAVE_FLAG_PAGE 0x08 |
| 120 | #define RAM_SAVE_FLAG_EOS 0x10 |
| 121 | #define RAM_SAVE_FLAG_CONTINUE 0x20 |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 122 | #define RAM_SAVE_FLAG_XBZRLE 0x40 |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 123 | /* 0x80 is reserved in migration.h start with 0x100 next */ |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 124 | |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 125 | static struct defconfig_file { |
| 126 | const char *filename; |
Eduardo Habkost | f29a561 | 2012-05-02 13:07:29 -0300 | [diff] [blame] | 127 | /* Indicates it is an user config file (disabled by -no-user-config) */ |
| 128 | bool userconfig; |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 129 | } default_config_files[] = { |
Eduardo Habkost | f29a561 | 2012-05-02 13:07:29 -0300 | [diff] [blame] | 130 | { CONFIG_QEMU_CONFDIR "/qemu.conf", true }, |
Paolo Bonzini | 2e59915 | 2013-06-04 14:45:27 +0200 | [diff] [blame] | 131 | { CONFIG_QEMU_CONFDIR "/target-" TARGET_NAME ".conf", true }, |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 132 | { NULL }, /* end of list */ |
| 133 | }; |
| 134 | |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 135 | static const uint8_t ZERO_TARGET_PAGE[TARGET_PAGE_SIZE]; |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 136 | |
Eduardo Habkost | f29a561 | 2012-05-02 13:07:29 -0300 | [diff] [blame] | 137 | int qemu_read_default_config_files(bool userconfig) |
Eduardo Habkost | b5a8fe5 | 2012-05-02 13:07:25 -0300 | [diff] [blame] | 138 | { |
| 139 | int ret; |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 140 | struct defconfig_file *f; |
| 141 | |
| 142 | for (f = default_config_files; f->filename; f++) { |
Eduardo Habkost | f29a561 | 2012-05-02 13:07:29 -0300 | [diff] [blame] | 143 | if (!userconfig && f->userconfig) { |
| 144 | continue; |
| 145 | } |
Eduardo Habkost | 756557d | 2012-05-02 13:07:27 -0300 | [diff] [blame] | 146 | ret = qemu_read_config_file(f->filename); |
| 147 | if (ret < 0 && ret != -ENOENT) { |
| 148 | return ret; |
| 149 | } |
| 150 | } |
Laszlo Ersek | 4d8b3c6 | 2013-03-21 00:23:13 +0100 | [diff] [blame] | 151 | |
Eduardo Habkost | b5a8fe5 | 2012-05-02 13:07:25 -0300 | [diff] [blame] | 152 | return 0; |
| 153 | } |
| 154 | |
Isaku Yamahata | dc3c26a | 2013-09-21 01:23:36 +0900 | [diff] [blame] | 155 | static inline bool is_zero_range(uint8_t *p, uint64_t size) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 156 | { |
Isaku Yamahata | dc3c26a | 2013-09-21 01:23:36 +0900 | [diff] [blame] | 157 | return buffer_find_nonzero_offset(p, size) == size; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 158 | } |
| 159 | |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 160 | /* struct contains XBZRLE cache and a static page |
| 161 | used by the compression */ |
| 162 | static struct { |
| 163 | /* buffer used for XBZRLE encoding */ |
| 164 | uint8_t *encoded_buf; |
| 165 | /* buffer for storing page content */ |
| 166 | uint8_t *current_buf; |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 167 | /* Cache for XBZRLE, Protected by lock. */ |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 168 | PageCache *cache; |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 169 | QemuMutex lock; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 170 | } XBZRLE = { |
| 171 | .encoded_buf = NULL, |
| 172 | .current_buf = NULL, |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 173 | .cache = NULL, |
| 174 | }; |
Gonglei (Arei) | 905f26f | 2014-01-30 20:08:35 +0200 | [diff] [blame] | 175 | /* buffer used for XBZRLE decoding */ |
| 176 | static uint8_t *xbzrle_decoded_buf; |
Orit Wasserman | 9e1ba4c | 2012-08-06 21:42:54 +0300 | [diff] [blame] | 177 | |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 178 | static void XBZRLE_cache_lock(void) |
| 179 | { |
| 180 | if (migrate_use_xbzrle()) |
| 181 | qemu_mutex_lock(&XBZRLE.lock); |
| 182 | } |
| 183 | |
| 184 | static void XBZRLE_cache_unlock(void) |
| 185 | { |
| 186 | if (migrate_use_xbzrle()) |
| 187 | qemu_mutex_unlock(&XBZRLE.lock); |
| 188 | } |
| 189 | |
Orit Wasserman | 9e1ba4c | 2012-08-06 21:42:54 +0300 | [diff] [blame] | 190 | int64_t xbzrle_cache_resize(int64_t new_size) |
| 191 | { |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 192 | PageCache *new_cache, *cache_to_free; |
| 193 | |
Orit Wasserman | c91e681 | 2014-01-30 20:08:34 +0200 | [diff] [blame] | 194 | if (new_size < TARGET_PAGE_SIZE) { |
| 195 | return -1; |
| 196 | } |
| 197 | |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 198 | /* no need to lock, the current thread holds qemu big lock */ |
Orit Wasserman | 9e1ba4c | 2012-08-06 21:42:54 +0300 | [diff] [blame] | 199 | if (XBZRLE.cache != NULL) { |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 200 | /* check XBZRLE.cache again later */ |
| 201 | if (pow2floor(new_size) == migrate_xbzrle_cache_size()) { |
| 202 | return pow2floor(new_size); |
| 203 | } |
| 204 | new_cache = cache_init(new_size / TARGET_PAGE_SIZE, |
| 205 | TARGET_PAGE_SIZE); |
| 206 | if (!new_cache) { |
| 207 | DPRINTF("Error creating cache\n"); |
| 208 | return -1; |
| 209 | } |
| 210 | |
| 211 | XBZRLE_cache_lock(); |
| 212 | /* the XBZRLE.cache may have be destroyed, check it again */ |
| 213 | if (XBZRLE.cache != NULL) { |
| 214 | cache_to_free = XBZRLE.cache; |
| 215 | XBZRLE.cache = new_cache; |
| 216 | } else { |
| 217 | cache_to_free = new_cache; |
| 218 | } |
| 219 | XBZRLE_cache_unlock(); |
| 220 | |
| 221 | cache_fini(cache_to_free); |
Orit Wasserman | 9e1ba4c | 2012-08-06 21:42:54 +0300 | [diff] [blame] | 222 | } |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 223 | |
Orit Wasserman | 9e1ba4c | 2012-08-06 21:42:54 +0300 | [diff] [blame] | 224 | return pow2floor(new_size); |
| 225 | } |
| 226 | |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 227 | /* accounting for migration statistics */ |
| 228 | typedef struct AccountingInfo { |
| 229 | uint64_t dup_pages; |
Peter Lieven | f1c7279 | 2013-03-26 10:58:37 +0100 | [diff] [blame] | 230 | uint64_t skipped_pages; |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 231 | uint64_t norm_pages; |
| 232 | uint64_t iterations; |
Orit Wasserman | f36d55a | 2012-08-06 21:42:57 +0300 | [diff] [blame] | 233 | uint64_t xbzrle_bytes; |
| 234 | uint64_t xbzrle_pages; |
| 235 | uint64_t xbzrle_cache_miss; |
| 236 | uint64_t xbzrle_overflows; |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 237 | } AccountingInfo; |
| 238 | |
| 239 | static AccountingInfo acct_info; |
| 240 | |
| 241 | static void acct_clear(void) |
| 242 | { |
| 243 | memset(&acct_info, 0, sizeof(acct_info)); |
| 244 | } |
| 245 | |
| 246 | uint64_t dup_mig_bytes_transferred(void) |
| 247 | { |
| 248 | return acct_info.dup_pages * TARGET_PAGE_SIZE; |
| 249 | } |
| 250 | |
| 251 | uint64_t dup_mig_pages_transferred(void) |
| 252 | { |
| 253 | return acct_info.dup_pages; |
| 254 | } |
| 255 | |
Peter Lieven | f1c7279 | 2013-03-26 10:58:37 +0100 | [diff] [blame] | 256 | uint64_t skipped_mig_bytes_transferred(void) |
| 257 | { |
| 258 | return acct_info.skipped_pages * TARGET_PAGE_SIZE; |
| 259 | } |
| 260 | |
| 261 | uint64_t skipped_mig_pages_transferred(void) |
| 262 | { |
| 263 | return acct_info.skipped_pages; |
| 264 | } |
| 265 | |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 266 | uint64_t norm_mig_bytes_transferred(void) |
| 267 | { |
| 268 | return acct_info.norm_pages * TARGET_PAGE_SIZE; |
| 269 | } |
| 270 | |
| 271 | uint64_t norm_mig_pages_transferred(void) |
| 272 | { |
| 273 | return acct_info.norm_pages; |
| 274 | } |
| 275 | |
Orit Wasserman | f36d55a | 2012-08-06 21:42:57 +0300 | [diff] [blame] | 276 | uint64_t xbzrle_mig_bytes_transferred(void) |
| 277 | { |
| 278 | return acct_info.xbzrle_bytes; |
| 279 | } |
| 280 | |
| 281 | uint64_t xbzrle_mig_pages_transferred(void) |
| 282 | { |
| 283 | return acct_info.xbzrle_pages; |
| 284 | } |
| 285 | |
| 286 | uint64_t xbzrle_mig_pages_cache_miss(void) |
| 287 | { |
| 288 | return acct_info.xbzrle_cache_miss; |
| 289 | } |
| 290 | |
| 291 | uint64_t xbzrle_mig_pages_overflow(void) |
| 292 | { |
| 293 | return acct_info.xbzrle_overflows; |
| 294 | } |
| 295 | |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 296 | static size_t save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, |
| 297 | int cont, int flag) |
Orit Wasserman | 0c51f43 | 2012-06-19 18:43:14 +0300 | [diff] [blame] | 298 | { |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 299 | size_t size; |
Orit Wasserman | 0c51f43 | 2012-06-19 18:43:14 +0300 | [diff] [blame] | 300 | |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 301 | qemu_put_be64(f, offset | cont | flag); |
| 302 | size = 8; |
| 303 | |
| 304 | if (!cont) { |
| 305 | qemu_put_byte(f, strlen(block->idstr)); |
| 306 | qemu_put_buffer(f, (uint8_t *)block->idstr, |
| 307 | strlen(block->idstr)); |
| 308 | size += 1 + strlen(block->idstr); |
| 309 | } |
| 310 | return size; |
Orit Wasserman | 0c51f43 | 2012-06-19 18:43:14 +0300 | [diff] [blame] | 311 | } |
| 312 | |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 313 | /* This is the last block that we have visited serching for dirty pages |
| 314 | */ |
| 315 | static RAMBlock *last_seen_block; |
| 316 | /* This is the last block from where we have sent data */ |
| 317 | static RAMBlock *last_sent_block; |
| 318 | static ram_addr_t last_offset; |
| 319 | static unsigned long *migration_bitmap; |
| 320 | static uint64_t migration_dirty_pages; |
| 321 | static uint32_t last_version; |
| 322 | static bool ram_bulk_stage; |
| 323 | |
| 324 | /* Update the xbzrle cache to reflect a page that's been sent as all 0. |
| 325 | * The important thing is that a stale (not-yet-0'd) page be replaced |
| 326 | * by the new data. |
| 327 | * As a bonus, if the page wasn't in the cache it gets added so that |
| 328 | * when a small write is made into the 0'd page it gets XBZRLE sent |
| 329 | */ |
| 330 | static void xbzrle_cache_zero_page(ram_addr_t current_addr) |
| 331 | { |
| 332 | if (ram_bulk_stage || !migrate_use_xbzrle()) { |
| 333 | return; |
| 334 | } |
| 335 | |
| 336 | /* We don't care if this fails to allocate a new cache page |
| 337 | * as long as it updated an old one */ |
| 338 | cache_insert(XBZRLE.cache, current_addr, ZERO_TARGET_PAGE); |
| 339 | } |
| 340 | |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 341 | #define ENCODING_FLAG_XBZRLE 0x1 |
| 342 | |
| 343 | static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data, |
| 344 | ram_addr_t current_addr, RAMBlock *block, |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 345 | ram_addr_t offset, int cont, bool last_stage) |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 346 | { |
| 347 | int encoded_len = 0, bytes_sent = -1; |
| 348 | uint8_t *prev_cached_page; |
| 349 | |
| 350 | if (!cache_is_cached(XBZRLE.cache, current_addr)) { |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 351 | if (!last_stage) { |
Orit Wasserman | 89db998 | 2014-01-30 20:08:38 +0200 | [diff] [blame] | 352 | if (cache_insert(XBZRLE.cache, current_addr, current_data) == -1) { |
| 353 | return -1; |
| 354 | } |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 355 | } |
Orit Wasserman | f36d55a | 2012-08-06 21:42:57 +0300 | [diff] [blame] | 356 | acct_info.xbzrle_cache_miss++; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 357 | return -1; |
| 358 | } |
| 359 | |
| 360 | prev_cached_page = get_cached_data(XBZRLE.cache, current_addr); |
| 361 | |
| 362 | /* save current buffer into memory */ |
| 363 | memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE); |
| 364 | |
| 365 | /* XBZRLE encoding (if there is no overflow) */ |
| 366 | encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf, |
| 367 | TARGET_PAGE_SIZE, XBZRLE.encoded_buf, |
| 368 | TARGET_PAGE_SIZE); |
| 369 | if (encoded_len == 0) { |
| 370 | DPRINTF("Skipping unmodified page\n"); |
| 371 | return 0; |
| 372 | } else if (encoded_len == -1) { |
| 373 | DPRINTF("Overflow\n"); |
Orit Wasserman | f36d55a | 2012-08-06 21:42:57 +0300 | [diff] [blame] | 374 | acct_info.xbzrle_overflows++; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 375 | /* update data in the cache */ |
| 376 | memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE); |
| 377 | return -1; |
| 378 | } |
| 379 | |
| 380 | /* we need to update the data in the cache, in order to get the same data */ |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 381 | if (!last_stage) { |
| 382 | memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE); |
| 383 | } |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 384 | |
| 385 | /* Send XBZRLE based compressed page */ |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 386 | bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 387 | qemu_put_byte(f, ENCODING_FLAG_XBZRLE); |
| 388 | qemu_put_be16(f, encoded_len); |
| 389 | qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len); |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 390 | bytes_sent += encoded_len + 1 + 2; |
Orit Wasserman | f36d55a | 2012-08-06 21:42:57 +0300 | [diff] [blame] | 391 | acct_info.xbzrle_pages++; |
| 392 | acct_info.xbzrle_bytes += bytes_sent; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 393 | |
| 394 | return bytes_sent; |
| 395 | } |
| 396 | |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 397 | static inline |
| 398 | ram_addr_t migration_bitmap_find_and_reset_dirty(MemoryRegion *mr, |
| 399 | ram_addr_t start) |
Juan Quintela | 69268cd | 2012-07-20 10:36:12 +0200 | [diff] [blame] | 400 | { |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 401 | unsigned long base = mr->ram_addr >> TARGET_PAGE_BITS; |
| 402 | unsigned long nr = base + (start >> TARGET_PAGE_BITS); |
Michael S. Tsirkin | 0851c9f | 2013-08-19 17:26:52 +0300 | [diff] [blame] | 403 | uint64_t mr_size = TARGET_PAGE_ALIGN(memory_region_size(mr)); |
| 404 | unsigned long size = base + (mr_size >> TARGET_PAGE_BITS); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 405 | |
Peter Lieven | 70c8652 | 2013-03-26 10:58:38 +0100 | [diff] [blame] | 406 | unsigned long next; |
| 407 | |
| 408 | if (ram_bulk_stage && nr > base) { |
| 409 | next = nr + 1; |
| 410 | } else { |
| 411 | next = find_next_bit(migration_bitmap, size, nr); |
| 412 | } |
Juan Quintela | 69268cd | 2012-07-20 10:36:12 +0200 | [diff] [blame] | 413 | |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 414 | if (next < size) { |
| 415 | clear_bit(next, migration_bitmap); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 416 | migration_dirty_pages--; |
Juan Quintela | 69268cd | 2012-07-20 10:36:12 +0200 | [diff] [blame] | 417 | } |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 418 | return (next - base) << TARGET_PAGE_BITS; |
Juan Quintela | 69268cd | 2012-07-20 10:36:12 +0200 | [diff] [blame] | 419 | } |
| 420 | |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 421 | static inline bool migration_bitmap_set_dirty(ram_addr_t addr) |
Juan Quintela | e44d26c | 2012-07-20 10:16:08 +0200 | [diff] [blame] | 422 | { |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 423 | bool ret; |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 424 | int nr = addr >> TARGET_PAGE_BITS; |
Juan Quintela | e44d26c | 2012-07-20 10:16:08 +0200 | [diff] [blame] | 425 | |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 426 | ret = test_and_set_bit(nr, migration_bitmap); |
| 427 | |
| 428 | if (!ret) { |
| 429 | migration_dirty_pages++; |
Juan Quintela | e44d26c | 2012-07-20 10:16:08 +0200 | [diff] [blame] | 430 | } |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 431 | return ret; |
Juan Quintela | e44d26c | 2012-07-20 10:16:08 +0200 | [diff] [blame] | 432 | } |
| 433 | |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 434 | static void migration_bitmap_sync_range(ram_addr_t start, ram_addr_t length) |
| 435 | { |
| 436 | ram_addr_t addr; |
Juan Quintela | aa8dc04 | 2013-11-06 11:33:05 +0100 | [diff] [blame] | 437 | unsigned long page = BIT_WORD(start >> TARGET_PAGE_BITS); |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 438 | |
Juan Quintela | aa8dc04 | 2013-11-06 11:33:05 +0100 | [diff] [blame] | 439 | /* start address is aligned at the start of a word? */ |
| 440 | if (((page * BITS_PER_LONG) << TARGET_PAGE_BITS) == start) { |
| 441 | int k; |
| 442 | int nr = BITS_TO_LONGS(length >> TARGET_PAGE_BITS); |
| 443 | unsigned long *src = ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]; |
| 444 | |
| 445 | for (k = page; k < page + nr; k++) { |
| 446 | if (src[k]) { |
| 447 | unsigned long new_dirty; |
| 448 | new_dirty = ~migration_bitmap[k]; |
| 449 | migration_bitmap[k] |= src[k]; |
| 450 | new_dirty &= src[k]; |
| 451 | migration_dirty_pages += ctpopl(new_dirty); |
| 452 | src[k] = 0; |
| 453 | } |
| 454 | } |
| 455 | } else { |
| 456 | for (addr = 0; addr < length; addr += TARGET_PAGE_SIZE) { |
| 457 | if (cpu_physical_memory_get_dirty(start + addr, |
| 458 | TARGET_PAGE_SIZE, |
| 459 | DIRTY_MEMORY_MIGRATION)) { |
| 460 | cpu_physical_memory_reset_dirty(start + addr, |
| 461 | TARGET_PAGE_SIZE, |
| 462 | DIRTY_MEMORY_MIGRATION); |
| 463 | migration_bitmap_set_dirty(start + addr); |
| 464 | } |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 465 | } |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | |
Paolo Bonzini | 32c835b | 2013-02-22 17:36:27 +0100 | [diff] [blame] | 470 | /* Needs iothread lock! */ |
| 471 | |
Juan Quintela | dd2df73 | 2012-07-20 10:52:51 +0200 | [diff] [blame] | 472 | static void migration_bitmap_sync(void) |
| 473 | { |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 474 | RAMBlock *block; |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 475 | uint64_t num_dirty_pages_init = migration_dirty_pages; |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 476 | MigrationState *s = migrate_get_current(); |
| 477 | static int64_t start_time; |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 478 | static int64_t bytes_xfer_prev; |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 479 | static int64_t num_dirty_pages_period; |
| 480 | int64_t end_time; |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 481 | int64_t bytes_xfer_now; |
| 482 | |
| 483 | if (!bytes_xfer_prev) { |
| 484 | bytes_xfer_prev = ram_bytes_transferred(); |
| 485 | } |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 486 | |
| 487 | if (!start_time) { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 488 | start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 489 | } |
Juan Quintela | 3c12193 | 2012-09-04 13:08:57 +0200 | [diff] [blame] | 490 | |
| 491 | trace_migration_bitmap_sync_start(); |
Paolo Bonzini | 1d67136 | 2013-04-24 10:46:55 +0200 | [diff] [blame] | 492 | address_space_sync_dirty_bitmap(&address_space_memory); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 493 | |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 494 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
Juan Quintela | 791fa2a | 2013-11-05 16:47:20 +0100 | [diff] [blame] | 495 | migration_bitmap_sync_range(block->mr->ram_addr, block->length); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 496 | } |
| 497 | trace_migration_bitmap_sync_end(migration_dirty_pages |
Juan Quintela | 3c12193 | 2012-09-04 13:08:57 +0200 | [diff] [blame] | 498 | - num_dirty_pages_init); |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 499 | num_dirty_pages_period += migration_dirty_pages - num_dirty_pages_init; |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 500 | end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 501 | |
| 502 | /* more than 1 second = 1000 millisecons */ |
| 503 | if (end_time > start_time + 1000) { |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 504 | if (migrate_auto_converge()) { |
| 505 | /* The following detection logic can be refined later. For now: |
| 506 | Check to see if the dirtied bytes is 50% more than the approx. |
| 507 | amount of bytes that just got transferred since the last time we |
| 508 | were in this routine. If that happens >N times (for now N==4) |
| 509 | we turn on the throttle down logic */ |
| 510 | bytes_xfer_now = ram_bytes_transferred(); |
| 511 | if (s->dirty_pages_rate && |
| 512 | (num_dirty_pages_period * TARGET_PAGE_SIZE > |
| 513 | (bytes_xfer_now - bytes_xfer_prev)/2) && |
| 514 | (dirty_rate_high_cnt++ > 4)) { |
| 515 | trace_migration_throttle(); |
| 516 | mig_throttle_on = true; |
| 517 | dirty_rate_high_cnt = 0; |
| 518 | } |
| 519 | bytes_xfer_prev = bytes_xfer_now; |
| 520 | } else { |
| 521 | mig_throttle_on = false; |
| 522 | } |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 523 | s->dirty_pages_rate = num_dirty_pages_period * 1000 |
| 524 | / (end_time - start_time); |
Juan Quintela | 90f8ae7 | 2013-02-01 13:22:37 +0100 | [diff] [blame] | 525 | s->dirty_bytes_rate = s->dirty_pages_rate * TARGET_PAGE_SIZE; |
Juan Quintela | 8d01719 | 2012-08-13 12:31:25 +0200 | [diff] [blame] | 526 | start_time = end_time; |
| 527 | num_dirty_pages_period = 0; |
| 528 | } |
Juan Quintela | dd2df73 | 2012-07-20 10:52:51 +0200 | [diff] [blame] | 529 | } |
| 530 | |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 531 | /* |
| 532 | * ram_save_block: Writes a page of memory to the stream f |
| 533 | * |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 534 | * Returns: The number of bytes written. |
| 535 | * 0 means no dirty pages |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 536 | */ |
| 537 | |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 538 | static int ram_save_block(QEMUFile *f, bool last_stage) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 539 | { |
Juan Quintela | b23a9a5 | 2012-10-17 20:08:04 +0200 | [diff] [blame] | 540 | RAMBlock *block = last_seen_block; |
Alex Williamson | e44359c | 2010-06-25 11:09:57 -0600 | [diff] [blame] | 541 | ram_addr_t offset = last_offset; |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 542 | bool complete_round = false; |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 543 | int bytes_sent = 0; |
Avi Kivity | 71c510e | 2011-12-21 13:11:22 +0200 | [diff] [blame] | 544 | MemoryRegion *mr; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 545 | ram_addr_t current_addr; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 546 | |
Alex Williamson | e44359c | 2010-06-25 11:09:57 -0600 | [diff] [blame] | 547 | if (!block) |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 548 | block = QTAILQ_FIRST(&ram_list.blocks); |
Alex Williamson | e44359c | 2010-06-25 11:09:57 -0600 | [diff] [blame] | 549 | |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 550 | while (true) { |
Avi Kivity | 71c510e | 2011-12-21 13:11:22 +0200 | [diff] [blame] | 551 | mr = block->mr; |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 552 | offset = migration_bitmap_find_and_reset_dirty(mr, offset); |
| 553 | if (complete_round && block == last_seen_block && |
| 554 | offset >= last_offset) { |
| 555 | break; |
| 556 | } |
| 557 | if (offset >= block->length) { |
| 558 | offset = 0; |
| 559 | block = QTAILQ_NEXT(block, next); |
| 560 | if (!block) { |
| 561 | block = QTAILQ_FIRST(&ram_list.blocks); |
| 562 | complete_round = true; |
Peter Lieven | 78d07ae | 2013-03-26 10:58:36 +0100 | [diff] [blame] | 563 | ram_bulk_stage = false; |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 564 | } |
| 565 | } else { |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 566 | int ret; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 567 | uint8_t *p; |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 568 | bool send_async = true; |
Juan Quintela | 5f718a1 | 2012-10-17 20:10:55 +0200 | [diff] [blame] | 569 | int cont = (block == last_sent_block) ? |
Juan Quintela | b23a9a5 | 2012-10-17 20:08:04 +0200 | [diff] [blame] | 570 | RAM_SAVE_FLAG_CONTINUE : 0; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 571 | |
Avi Kivity | 71c510e | 2011-12-21 13:11:22 +0200 | [diff] [blame] | 572 | p = memory_region_get_ram_ptr(mr) + offset; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 573 | |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 574 | /* In doubt sent page as normal */ |
| 575 | bytes_sent = -1; |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 576 | ret = ram_control_save_page(f, block->offset, |
| 577 | offset, TARGET_PAGE_SIZE, &bytes_sent); |
| 578 | |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 579 | XBZRLE_cache_lock(); |
| 580 | |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 581 | current_addr = block->offset + offset; |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 582 | if (ret != RAM_SAVE_CONTROL_NOT_SUPP) { |
| 583 | if (ret != RAM_SAVE_CONTROL_DELAYED) { |
| 584 | if (bytes_sent > 0) { |
| 585 | acct_info.norm_pages++; |
| 586 | } else if (bytes_sent == 0) { |
| 587 | acct_info.dup_pages++; |
| 588 | } |
| 589 | } |
Isaku Yamahata | dc3c26a | 2013-09-21 01:23:36 +0900 | [diff] [blame] | 590 | } else if (is_zero_range(p, TARGET_PAGE_SIZE)) { |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 591 | acct_info.dup_pages++; |
Peter Lieven | 9ef051e | 2013-06-10 12:14:19 +0200 | [diff] [blame] | 592 | bytes_sent = save_block_hdr(f, block, offset, cont, |
| 593 | RAM_SAVE_FLAG_COMPRESS); |
| 594 | qemu_put_byte(f, 0); |
| 595 | bytes_sent++; |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 596 | /* Must let xbzrle know, otherwise a previous (now 0'd) cached |
| 597 | * page would be stale |
| 598 | */ |
| 599 | xbzrle_cache_zero_page(current_addr); |
Peter Lieven | 5cc11c4 | 2013-03-26 10:58:39 +0100 | [diff] [blame] | 600 | } else if (!ram_bulk_stage && migrate_use_xbzrle()) { |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 601 | bytes_sent = save_xbzrle_page(f, p, current_addr, block, |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 602 | offset, cont, last_stage); |
| 603 | if (!last_stage) { |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 604 | /* We must send exactly what's in the xbzrle cache |
| 605 | * even if the page wasn't xbzrle compressed, so that |
| 606 | * it's right next time. |
| 607 | */ |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 608 | p = get_cached_data(XBZRLE.cache, current_addr); |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 609 | |
| 610 | /* Can't send this cached data async, since the cache page |
| 611 | * might get updated before it gets to the wire |
| 612 | */ |
| 613 | send_async = false; |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 614 | } |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 615 | } |
| 616 | |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 617 | /* XBZRLE overflow or normal page */ |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 618 | if (bytes_sent == -1) { |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 619 | bytes_sent = save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); |
Dr. David Alan Gilbert | 6d3cb1f | 2014-02-13 19:44:45 +0000 | [diff] [blame] | 620 | if (send_async) { |
| 621 | qemu_put_buffer_async(f, p, TARGET_PAGE_SIZE); |
| 622 | } else { |
| 623 | qemu_put_buffer(f, p, TARGET_PAGE_SIZE); |
| 624 | } |
Juan Quintela | 3f7d7b0 | 2012-10-18 13:56:35 +0200 | [diff] [blame] | 625 | bytes_sent += TARGET_PAGE_SIZE; |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 626 | acct_info.norm_pages++; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 627 | } |
| 628 | |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 629 | XBZRLE_cache_unlock(); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 630 | /* if page is unmodified, continue to the next */ |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 631 | if (bytes_sent > 0) { |
Juan Quintela | 5f718a1 | 2012-10-17 20:10:55 +0200 | [diff] [blame] | 632 | last_sent_block = block; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 633 | break; |
| 634 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 635 | } |
Juan Quintela | 4c8ae0f | 2012-10-18 00:00:59 +0200 | [diff] [blame] | 636 | } |
Juan Quintela | b23a9a5 | 2012-10-17 20:08:04 +0200 | [diff] [blame] | 637 | last_seen_block = block; |
Alex Williamson | e44359c | 2010-06-25 11:09:57 -0600 | [diff] [blame] | 638 | last_offset = offset; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 639 | |
Pierre Riteau | 3fc250b | 2010-05-12 15:12:44 +0200 | [diff] [blame] | 640 | return bytes_sent; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | static uint64_t bytes_transferred; |
| 644 | |
Michael R. Hines | 2b0ce07 | 2013-06-25 21:35:28 -0400 | [diff] [blame] | 645 | void acct_update_position(QEMUFile *f, size_t size, bool zero) |
| 646 | { |
| 647 | uint64_t pages = size / TARGET_PAGE_SIZE; |
| 648 | if (zero) { |
| 649 | acct_info.dup_pages += pages; |
| 650 | } else { |
| 651 | acct_info.norm_pages += pages; |
| 652 | bytes_transferred += size; |
| 653 | qemu_update_position(f, size); |
| 654 | } |
| 655 | } |
| 656 | |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 657 | static ram_addr_t ram_save_remaining(void) |
| 658 | { |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 659 | return migration_dirty_pages; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 660 | } |
| 661 | |
| 662 | uint64_t ram_bytes_remaining(void) |
| 663 | { |
| 664 | return ram_save_remaining() * TARGET_PAGE_SIZE; |
| 665 | } |
| 666 | |
| 667 | uint64_t ram_bytes_transferred(void) |
| 668 | { |
| 669 | return bytes_transferred; |
| 670 | } |
| 671 | |
| 672 | uint64_t ram_bytes_total(void) |
| 673 | { |
Alex Williamson | d17b528 | 2010-06-25 11:08:38 -0600 | [diff] [blame] | 674 | RAMBlock *block; |
| 675 | uint64_t total = 0; |
| 676 | |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 677 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
Alex Williamson | d17b528 | 2010-06-25 11:08:38 -0600 | [diff] [blame] | 678 | total += block->length; |
| 679 | |
| 680 | return total; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 681 | } |
| 682 | |
Gonglei (Arei) | 905f26f | 2014-01-30 20:08:35 +0200 | [diff] [blame] | 683 | void free_xbzrle_decoded_buf(void) |
| 684 | { |
| 685 | g_free(xbzrle_decoded_buf); |
| 686 | xbzrle_decoded_buf = NULL; |
| 687 | } |
| 688 | |
Orit Wasserman | 8e21cd3 | 2012-06-19 18:43:17 +0300 | [diff] [blame] | 689 | static void migration_end(void) |
| 690 | { |
Paolo Bonzini | 244eaa7 | 2012-12-12 12:54:43 +0100 | [diff] [blame] | 691 | if (migration_bitmap) { |
| 692 | memory_global_dirty_log_stop(); |
| 693 | g_free(migration_bitmap); |
| 694 | migration_bitmap = NULL; |
| 695 | } |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 696 | |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 697 | XBZRLE_cache_lock(); |
Paolo Bonzini | 244eaa7 | 2012-12-12 12:54:43 +0100 | [diff] [blame] | 698 | if (XBZRLE.cache) { |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 699 | cache_fini(XBZRLE.cache); |
| 700 | g_free(XBZRLE.cache); |
| 701 | g_free(XBZRLE.encoded_buf); |
| 702 | g_free(XBZRLE.current_buf); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 703 | XBZRLE.cache = NULL; |
Orit Wasserman | f6c6483 | 2014-01-30 20:08:33 +0200 | [diff] [blame] | 704 | XBZRLE.encoded_buf = NULL; |
| 705 | XBZRLE.current_buf = NULL; |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 706 | } |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 707 | XBZRLE_cache_unlock(); |
Orit Wasserman | 8e21cd3 | 2012-06-19 18:43:17 +0300 | [diff] [blame] | 708 | } |
| 709 | |
Juan Quintela | 9b5bfab | 2012-06-26 19:26:41 +0200 | [diff] [blame] | 710 | static void ram_migration_cancel(void *opaque) |
| 711 | { |
| 712 | migration_end(); |
| 713 | } |
| 714 | |
Juan Quintela | 5a17077 | 2012-07-17 17:02:24 +0200 | [diff] [blame] | 715 | static void reset_ram_globals(void) |
| 716 | { |
Juan Quintela | b23a9a5 | 2012-10-17 20:08:04 +0200 | [diff] [blame] | 717 | last_seen_block = NULL; |
Juan Quintela | 5f718a1 | 2012-10-17 20:10:55 +0200 | [diff] [blame] | 718 | last_sent_block = NULL; |
Juan Quintela | 5a17077 | 2012-07-17 17:02:24 +0200 | [diff] [blame] | 719 | last_offset = 0; |
Umesh Deshpande | f798b07 | 2011-08-18 11:41:17 -0700 | [diff] [blame] | 720 | last_version = ram_list.version; |
Peter Lieven | 78d07ae | 2013-03-26 10:58:36 +0100 | [diff] [blame] | 721 | ram_bulk_stage = true; |
Juan Quintela | 5a17077 | 2012-07-17 17:02:24 +0200 | [diff] [blame] | 722 | } |
| 723 | |
Juan Quintela | 4508bd9 | 2012-05-22 16:27:59 +0200 | [diff] [blame] | 724 | #define MAX_WAIT 50 /* ms, half buffered_file limit */ |
| 725 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 726 | static int ram_save_setup(QEMUFile *f, void *opaque) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 727 | { |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 728 | RAMBlock *block; |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 729 | int64_t ram_pages = last_ram_offset() >> TARGET_PAGE_BITS; |
| 730 | |
| 731 | migration_bitmap = bitmap_new(ram_pages); |
David Gibson | 7ec81e5 | 2012-12-04 11:38:38 +1100 | [diff] [blame] | 732 | bitmap_set(migration_bitmap, 0, ram_pages); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 733 | migration_dirty_pages = ram_pages; |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 734 | mig_throttle_on = false; |
| 735 | dirty_rate_high_cnt = 0; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 736 | |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 737 | if (migrate_use_xbzrle()) { |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 738 | qemu_mutex_lock_iothread(); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 739 | XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() / |
| 740 | TARGET_PAGE_SIZE, |
| 741 | TARGET_PAGE_SIZE); |
| 742 | if (!XBZRLE.cache) { |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 743 | qemu_mutex_unlock_iothread(); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 744 | DPRINTF("Error creating cache\n"); |
| 745 | return -1; |
| 746 | } |
Gonglei | fd8cec9 | 2014-03-04 21:29:21 +0800 | [diff] [blame] | 747 | qemu_mutex_init(&XBZRLE.lock); |
| 748 | qemu_mutex_unlock_iothread(); |
Orit Wasserman | a17b2fd | 2014-01-30 20:08:37 +0200 | [diff] [blame] | 749 | |
| 750 | /* We prefer not to abort if there is no memory */ |
| 751 | XBZRLE.encoded_buf = g_try_malloc0(TARGET_PAGE_SIZE); |
| 752 | if (!XBZRLE.encoded_buf) { |
| 753 | DPRINTF("Error allocating encoded_buf\n"); |
| 754 | return -1; |
| 755 | } |
| 756 | |
| 757 | XBZRLE.current_buf = g_try_malloc(TARGET_PAGE_SIZE); |
| 758 | if (!XBZRLE.current_buf) { |
| 759 | DPRINTF("Error allocating current_buf\n"); |
| 760 | g_free(XBZRLE.encoded_buf); |
| 761 | XBZRLE.encoded_buf = NULL; |
| 762 | return -1; |
| 763 | } |
| 764 | |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 765 | acct_clear(); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 766 | } |
| 767 | |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 768 | qemu_mutex_lock_iothread(); |
| 769 | qemu_mutex_lock_ramlist(); |
| 770 | bytes_transferred = 0; |
| 771 | reset_ram_globals(); |
| 772 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 773 | memory_global_dirty_log_start(); |
Juan Quintela | c6bf8e0 | 2012-07-20 12:33:00 +0200 | [diff] [blame] | 774 | migration_bitmap_sync(); |
Paolo Bonzini | 9b09503 | 2013-02-22 17:36:28 +0100 | [diff] [blame] | 775 | qemu_mutex_unlock_iothread(); |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 776 | |
| 777 | qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE); |
| 778 | |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 779 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 780 | qemu_put_byte(f, strlen(block->idstr)); |
| 781 | qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr)); |
| 782 | qemu_put_be64(f, block->length); |
| 783 | } |
| 784 | |
Umesh Deshpande | b2a8658 | 2011-08-17 00:01:33 -0700 | [diff] [blame] | 785 | qemu_mutex_unlock_ramlist(); |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 786 | |
| 787 | ram_control_before_iterate(f, RAM_CONTROL_SETUP); |
| 788 | ram_control_after_iterate(f, RAM_CONTROL_SETUP); |
| 789 | |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 790 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
| 791 | |
| 792 | return 0; |
| 793 | } |
| 794 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 795 | static int ram_save_iterate(QEMUFile *f, void *opaque) |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 796 | { |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 797 | int ret; |
| 798 | int i; |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 799 | int64_t t0; |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 800 | int total_sent = 0; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 801 | |
Umesh Deshpande | b2a8658 | 2011-08-17 00:01:33 -0700 | [diff] [blame] | 802 | qemu_mutex_lock_ramlist(); |
| 803 | |
Umesh Deshpande | f798b07 | 2011-08-18 11:41:17 -0700 | [diff] [blame] | 804 | if (ram_list.version != last_version) { |
| 805 | reset_ram_globals(); |
| 806 | } |
| 807 | |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 808 | ram_control_before_iterate(f, RAM_CONTROL_ROUND); |
| 809 | |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 810 | t0 = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
Juan Quintela | 4508bd9 | 2012-05-22 16:27:59 +0200 | [diff] [blame] | 811 | i = 0; |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 812 | while ((ret = qemu_file_rate_limit(f)) == 0) { |
Pierre Riteau | 3fc250b | 2010-05-12 15:12:44 +0200 | [diff] [blame] | 813 | int bytes_sent; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 814 | |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 815 | bytes_sent = ram_save_block(f, false); |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 816 | /* no more blocks to sent */ |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 817 | if (bytes_sent == 0) { |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 818 | break; |
| 819 | } |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 820 | total_sent += bytes_sent; |
Orit Wasserman | 004d4c1 | 2012-08-06 21:42:56 +0300 | [diff] [blame] | 821 | acct_info.iterations++; |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 822 | check_guest_throttling(); |
Juan Quintela | 4508bd9 | 2012-05-22 16:27:59 +0200 | [diff] [blame] | 823 | /* we want to check in the 1st loop, just in case it was the 1st time |
| 824 | and we had to sync the dirty bitmap. |
| 825 | qemu_get_clock_ns() is a bit expensive, so we only check each some |
| 826 | iterations |
| 827 | */ |
| 828 | if ((i & 63) == 0) { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 829 | uint64_t t1 = (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - t0) / 1000000; |
Juan Quintela | 4508bd9 | 2012-05-22 16:27:59 +0200 | [diff] [blame] | 830 | if (t1 > MAX_WAIT) { |
Igor Mitsyanko | ef37a69 | 2012-09-05 13:04:56 +0400 | [diff] [blame] | 831 | DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n", |
Juan Quintela | 4508bd9 | 2012-05-22 16:27:59 +0200 | [diff] [blame] | 832 | t1, i); |
| 833 | break; |
| 834 | } |
| 835 | } |
| 836 | i++; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 837 | } |
| 838 | |
Paolo Bonzini | fb3409d | 2012-12-20 11:25:45 +0100 | [diff] [blame] | 839 | qemu_mutex_unlock_ramlist(); |
| 840 | |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 841 | /* |
| 842 | * Must occur before EOS (or any QEMUFile operation) |
| 843 | * because of RDMA protocol. |
| 844 | */ |
| 845 | ram_control_after_iterate(f, RAM_CONTROL_ROUND); |
| 846 | |
Lei Li | 6cd0bed | 2013-09-04 17:02:36 +0800 | [diff] [blame] | 847 | bytes_transferred += total_sent; |
| 848 | |
| 849 | /* |
| 850 | * Do not count these 8 bytes into total_sent, so that we can |
| 851 | * return 0 if no page had been dirtied. |
| 852 | */ |
| 853 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
| 854 | bytes_transferred += 8; |
| 855 | |
| 856 | ret = qemu_file_get_error(f); |
Juan Quintela | 2975725 | 2011-10-19 15:22:18 +0200 | [diff] [blame] | 857 | if (ret < 0) { |
| 858 | return ret; |
| 859 | } |
| 860 | |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 861 | return total_sent; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 862 | } |
| 863 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 864 | static int ram_save_complete(QEMUFile *f, void *opaque) |
| 865 | { |
Umesh Deshpande | b2a8658 | 2011-08-17 00:01:33 -0700 | [diff] [blame] | 866 | qemu_mutex_lock_ramlist(); |
Paolo Bonzini | 9c33948 | 2012-12-20 11:26:04 +0100 | [diff] [blame] | 867 | migration_bitmap_sync(); |
Umesh Deshpande | b2a8658 | 2011-08-17 00:01:33 -0700 | [diff] [blame] | 868 | |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 869 | ram_control_before_iterate(f, RAM_CONTROL_FINISH); |
| 870 | |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 871 | /* try transferring iterative blocks of memory */ |
| 872 | |
| 873 | /* flush all remaining blocks regardless of rate limiting */ |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 874 | while (true) { |
| 875 | int bytes_sent; |
| 876 | |
Juan Quintela | dd051c7 | 2012-08-06 21:42:58 +0300 | [diff] [blame] | 877 | bytes_sent = ram_save_block(f, true); |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 878 | /* no more blocks to sent */ |
Juan Quintela | b823cea | 2012-12-10 13:27:50 +0100 | [diff] [blame] | 879 | if (bytes_sent == 0) { |
Orit Wasserman | 6c779f2 | 2012-07-10 12:37:13 +0300 | [diff] [blame] | 880 | break; |
| 881 | } |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 882 | bytes_transferred += bytes_sent; |
| 883 | } |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 884 | |
| 885 | ram_control_after_iterate(f, RAM_CONTROL_FINISH); |
Paolo Bonzini | 244eaa7 | 2012-12-12 12:54:43 +0100 | [diff] [blame] | 886 | migration_end(); |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 887 | |
Umesh Deshpande | b2a8658 | 2011-08-17 00:01:33 -0700 | [diff] [blame] | 888 | qemu_mutex_unlock_ramlist(); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 889 | qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
| 890 | |
Alex Williamson | a55bbe3 | 2010-06-25 11:10:05 -0600 | [diff] [blame] | 891 | return 0; |
| 892 | } |
| 893 | |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 894 | static uint64_t ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size) |
| 895 | { |
| 896 | uint64_t remaining_size; |
| 897 | |
| 898 | remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE; |
| 899 | |
| 900 | if (remaining_size < max_size) { |
Paolo Bonzini | 32c835b | 2013-02-22 17:36:27 +0100 | [diff] [blame] | 901 | qemu_mutex_lock_iothread(); |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 902 | migration_bitmap_sync(); |
Paolo Bonzini | 32c835b | 2013-02-22 17:36:27 +0100 | [diff] [blame] | 903 | qemu_mutex_unlock_iothread(); |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 904 | remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE; |
| 905 | } |
| 906 | return remaining_size; |
| 907 | } |
| 908 | |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 909 | static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host) |
| 910 | { |
| 911 | int ret, rc = 0; |
| 912 | unsigned int xh_len; |
| 913 | int xh_flags; |
| 914 | |
Gonglei (Arei) | 905f26f | 2014-01-30 20:08:35 +0200 | [diff] [blame] | 915 | if (!xbzrle_decoded_buf) { |
| 916 | xbzrle_decoded_buf = g_malloc(TARGET_PAGE_SIZE); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | /* extract RLE header */ |
| 920 | xh_flags = qemu_get_byte(f); |
| 921 | xh_len = qemu_get_be16(f); |
| 922 | |
| 923 | if (xh_flags != ENCODING_FLAG_XBZRLE) { |
| 924 | fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n"); |
| 925 | return -1; |
| 926 | } |
| 927 | |
| 928 | if (xh_len > TARGET_PAGE_SIZE) { |
| 929 | fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n"); |
| 930 | return -1; |
| 931 | } |
| 932 | /* load data and decode */ |
Gonglei (Arei) | 905f26f | 2014-01-30 20:08:35 +0200 | [diff] [blame] | 933 | qemu_get_buffer(f, xbzrle_decoded_buf, xh_len); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 934 | |
| 935 | /* decode RLE */ |
Gonglei (Arei) | 905f26f | 2014-01-30 20:08:35 +0200 | [diff] [blame] | 936 | ret = xbzrle_decode_buffer(xbzrle_decoded_buf, xh_len, host, |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 937 | TARGET_PAGE_SIZE); |
| 938 | if (ret == -1) { |
| 939 | fprintf(stderr, "Failed to load XBZRLE page - decode error!\n"); |
| 940 | rc = -1; |
| 941 | } else if (ret > TARGET_PAGE_SIZE) { |
| 942 | fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n", |
| 943 | ret, TARGET_PAGE_SIZE); |
| 944 | abort(); |
| 945 | } |
| 946 | |
| 947 | return rc; |
| 948 | } |
| 949 | |
Alex Williamson | a55bbe3 | 2010-06-25 11:10:05 -0600 | [diff] [blame] | 950 | static inline void *host_from_stream_offset(QEMUFile *f, |
| 951 | ram_addr_t offset, |
| 952 | int flags) |
| 953 | { |
| 954 | static RAMBlock *block = NULL; |
| 955 | char id[256]; |
| 956 | uint8_t len; |
| 957 | |
| 958 | if (flags & RAM_SAVE_FLAG_CONTINUE) { |
| 959 | if (!block) { |
| 960 | fprintf(stderr, "Ack, bad migration stream!\n"); |
| 961 | return NULL; |
| 962 | } |
| 963 | |
Avi Kivity | dc94a7e | 2011-12-21 13:54:33 +0200 | [diff] [blame] | 964 | return memory_region_get_ram_ptr(block->mr) + offset; |
Alex Williamson | a55bbe3 | 2010-06-25 11:10:05 -0600 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | len = qemu_get_byte(f); |
| 968 | qemu_get_buffer(f, (uint8_t *)id, len); |
| 969 | id[len] = 0; |
| 970 | |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 971 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
Alex Williamson | a55bbe3 | 2010-06-25 11:10:05 -0600 | [diff] [blame] | 972 | if (!strncmp(id, block->idstr, sizeof(id))) |
Avi Kivity | dc94a7e | 2011-12-21 13:54:33 +0200 | [diff] [blame] | 973 | return memory_region_get_ram_ptr(block->mr) + offset; |
Alex Williamson | a55bbe3 | 2010-06-25 11:10:05 -0600 | [diff] [blame] | 974 | } |
| 975 | |
| 976 | fprintf(stderr, "Can't find block %s!\n", id); |
| 977 | return NULL; |
| 978 | } |
| 979 | |
Michael R. Hines | 44c3b58 | 2013-07-22 10:01:53 -0400 | [diff] [blame] | 980 | /* |
| 981 | * If a page (or a whole RDMA chunk) has been |
| 982 | * determined to be zero, then zap it. |
| 983 | */ |
| 984 | void ram_handle_compressed(void *host, uint8_t ch, uint64_t size) |
| 985 | { |
Isaku Yamahata | d613a56 | 2013-09-21 01:23:37 +0900 | [diff] [blame] | 986 | if (ch != 0 || !is_zero_range(host, size)) { |
Michael R. Hines | 44c3b58 | 2013-07-22 10:01:53 -0400 | [diff] [blame] | 987 | memset(host, ch, size); |
Michael R. Hines | 44c3b58 | 2013-07-22 10:01:53 -0400 | [diff] [blame] | 988 | } |
| 989 | } |
| 990 | |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 991 | static int ram_load(QEMUFile *f, void *opaque, int version_id) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 992 | { |
| 993 | ram_addr_t addr; |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 994 | int flags, ret = 0; |
Juan Quintela | 42802d4 | 2011-10-05 01:14:46 +0200 | [diff] [blame] | 995 | int error; |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 996 | static uint64_t seq_iter; |
| 997 | |
| 998 | seq_iter++; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 999 | |
Avi Kivity | f09f218 | 2011-12-21 13:37:56 +0200 | [diff] [blame] | 1000 | if (version_id < 4 || version_id > 4) { |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1001 | return -EINVAL; |
| 1002 | } |
| 1003 | |
| 1004 | do { |
| 1005 | addr = qemu_get_be64(f); |
| 1006 | |
| 1007 | flags = addr & ~TARGET_PAGE_MASK; |
| 1008 | addr &= TARGET_PAGE_MASK; |
| 1009 | |
| 1010 | if (flags & RAM_SAVE_FLAG_MEM_SIZE) { |
Avi Kivity | f09f218 | 2011-12-21 13:37:56 +0200 | [diff] [blame] | 1011 | if (version_id == 4) { |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1012 | /* Synchronize RAM block list */ |
| 1013 | char id[256]; |
| 1014 | ram_addr_t length; |
| 1015 | ram_addr_t total_ram_bytes = addr; |
| 1016 | |
| 1017 | while (total_ram_bytes) { |
| 1018 | RAMBlock *block; |
| 1019 | uint8_t len; |
| 1020 | |
| 1021 | len = qemu_get_byte(f); |
| 1022 | qemu_get_buffer(f, (uint8_t *)id, len); |
| 1023 | id[len] = 0; |
| 1024 | length = qemu_get_be64(f); |
| 1025 | |
Paolo Bonzini | a316103 | 2012-11-14 15:54:48 +0100 | [diff] [blame] | 1026 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1027 | if (!strncmp(id, block->idstr, sizeof(id))) { |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1028 | if (block->length != length) { |
Stefan Weil | 6bedfe9 | 2013-06-27 21:00:06 +0200 | [diff] [blame] | 1029 | fprintf(stderr, |
| 1030 | "Length mismatch: %s: " RAM_ADDR_FMT |
| 1031 | " in != " RAM_ADDR_FMT "\n", id, length, |
Alon Levy | 87d2f82 | 2013-05-12 14:16:28 +0300 | [diff] [blame] | 1032 | block->length); |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1033 | ret = -EINVAL; |
| 1034 | goto done; |
| 1035 | } |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1036 | break; |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | if (!block) { |
Alex Williamson | fb787f8 | 2010-07-02 11:13:29 -0600 | [diff] [blame] | 1041 | fprintf(stderr, "Unknown ramblock \"%s\", cannot " |
| 1042 | "accept migration\n", id); |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1043 | ret = -EINVAL; |
| 1044 | goto done; |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1045 | } |
| 1046 | |
| 1047 | total_ram_bytes -= length; |
| 1048 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | if (flags & RAM_SAVE_FLAG_COMPRESS) { |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1053 | void *host; |
| 1054 | uint8_t ch; |
| 1055 | |
Avi Kivity | f09f218 | 2011-12-21 13:37:56 +0200 | [diff] [blame] | 1056 | host = host_from_stream_offset(f, addr, flags); |
Michael S. Tsirkin | 492fb99 | 2010-10-17 20:43:40 +0200 | [diff] [blame] | 1057 | if (!host) { |
| 1058 | return -EINVAL; |
| 1059 | } |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1060 | |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1061 | ch = qemu_get_byte(f); |
Michael R. Hines | 44c3b58 | 2013-07-22 10:01:53 -0400 | [diff] [blame] | 1062 | ram_handle_compressed(host, ch, TARGET_PAGE_SIZE); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1063 | } else if (flags & RAM_SAVE_FLAG_PAGE) { |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1064 | void *host; |
| 1065 | |
Avi Kivity | f09f218 | 2011-12-21 13:37:56 +0200 | [diff] [blame] | 1066 | host = host_from_stream_offset(f, addr, flags); |
Orit Wasserman | 0ff1f9f | 2012-06-19 11:51:37 +0300 | [diff] [blame] | 1067 | if (!host) { |
| 1068 | return -EINVAL; |
| 1069 | } |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1070 | |
Alex Williamson | 97ab12d | 2010-06-25 11:09:50 -0600 | [diff] [blame] | 1071 | qemu_get_buffer(f, host, TARGET_PAGE_SIZE); |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 1072 | } else if (flags & RAM_SAVE_FLAG_XBZRLE) { |
Orit Wasserman | 17ad9b3 | 2012-08-06 21:42:53 +0300 | [diff] [blame] | 1073 | void *host = host_from_stream_offset(f, addr, flags); |
| 1074 | if (!host) { |
| 1075 | return -EINVAL; |
| 1076 | } |
| 1077 | |
| 1078 | if (load_xbzrle(f, addr, host) < 0) { |
| 1079 | ret = -EINVAL; |
| 1080 | goto done; |
| 1081 | } |
Michael R. Hines | 0033b8b | 2013-07-22 10:01:55 -0400 | [diff] [blame] | 1082 | } else if (flags & RAM_SAVE_FLAG_HOOK) { |
| 1083 | ram_control_load_hook(f, flags); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1084 | } |
Juan Quintela | 42802d4 | 2011-10-05 01:14:46 +0200 | [diff] [blame] | 1085 | error = qemu_file_get_error(f); |
| 1086 | if (error) { |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1087 | ret = error; |
| 1088 | goto done; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1089 | } |
| 1090 | } while (!(flags & RAM_SAVE_FLAG_EOS)); |
| 1091 | |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1092 | done: |
Igor Mitsyanko | ef37a69 | 2012-09-05 13:04:56 +0400 | [diff] [blame] | 1093 | DPRINTF("Completed load of VM with exit code %d seq iteration " |
| 1094 | "%" PRIu64 "\n", ret, seq_iter); |
Orit Wasserman | 3a697f6 | 2012-06-19 18:43:15 +0300 | [diff] [blame] | 1095 | return ret; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1096 | } |
| 1097 | |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 1098 | SaveVMHandlers savevm_ram_handlers = { |
Juan Quintela | d1315aa | 2012-06-28 15:11:57 +0200 | [diff] [blame] | 1099 | .save_live_setup = ram_save_setup, |
Juan Quintela | 16310a3 | 2012-06-28 15:31:37 +0200 | [diff] [blame] | 1100 | .save_live_iterate = ram_save_iterate, |
| 1101 | .save_live_complete = ram_save_complete, |
Juan Quintela | e4ed154 | 2012-09-21 11:18:18 +0200 | [diff] [blame] | 1102 | .save_live_pending = ram_save_pending, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 1103 | .load_state = ram_load, |
Juan Quintela | 9b5bfab | 2012-06-26 19:26:41 +0200 | [diff] [blame] | 1104 | .cancel = ram_migration_cancel, |
Juan Quintela | 7908c78 | 2012-06-26 18:46:10 +0200 | [diff] [blame] | 1105 | }; |
| 1106 | |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1107 | struct soundhw { |
| 1108 | const char *name; |
| 1109 | const char *descr; |
| 1110 | int enabled; |
| 1111 | int isa; |
| 1112 | union { |
Hervé Poussineau | 4a0f031 | 2011-12-15 22:10:01 +0100 | [diff] [blame] | 1113 | int (*init_isa) (ISABus *bus); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1114 | int (*init_pci) (PCIBus *bus); |
| 1115 | } init; |
| 1116 | }; |
| 1117 | |
Paolo Bonzini | 36cd6f6 | 2013-04-18 18:43:58 +0200 | [diff] [blame] | 1118 | static struct soundhw soundhw[9]; |
| 1119 | static int soundhw_count; |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1120 | |
Paolo Bonzini | 36cd6f6 | 2013-04-18 18:43:58 +0200 | [diff] [blame] | 1121 | void isa_register_soundhw(const char *name, const char *descr, |
| 1122 | int (*init_isa)(ISABus *bus)) |
| 1123 | { |
| 1124 | assert(soundhw_count < ARRAY_SIZE(soundhw) - 1); |
| 1125 | soundhw[soundhw_count].name = name; |
| 1126 | soundhw[soundhw_count].descr = descr; |
| 1127 | soundhw[soundhw_count].isa = 1; |
| 1128 | soundhw[soundhw_count].init.init_isa = init_isa; |
| 1129 | soundhw_count++; |
| 1130 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1131 | |
Paolo Bonzini | 36cd6f6 | 2013-04-18 18:43:58 +0200 | [diff] [blame] | 1132 | void pci_register_soundhw(const char *name, const char *descr, |
| 1133 | int (*init_pci)(PCIBus *bus)) |
| 1134 | { |
| 1135 | assert(soundhw_count < ARRAY_SIZE(soundhw) - 1); |
| 1136 | soundhw[soundhw_count].name = name; |
| 1137 | soundhw[soundhw_count].descr = descr; |
| 1138 | soundhw[soundhw_count].isa = 0; |
| 1139 | soundhw[soundhw_count].init.init_pci = init_pci; |
| 1140 | soundhw_count++; |
| 1141 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1142 | |
| 1143 | void select_soundhw(const char *optarg) |
| 1144 | { |
| 1145 | struct soundhw *c; |
| 1146 | |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 1147 | if (is_help_option(optarg)) { |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1148 | show_valid_cards: |
| 1149 | |
Paolo Bonzini | 36cd6f6 | 2013-04-18 18:43:58 +0200 | [diff] [blame] | 1150 | if (soundhw_count) { |
| 1151 | printf("Valid sound card names (comma separated):\n"); |
| 1152 | for (c = soundhw; c->name; ++c) { |
| 1153 | printf ("%-11s %s\n", c->name, c->descr); |
| 1154 | } |
| 1155 | printf("\n-soundhw all will enable all of the above\n"); |
| 1156 | } else { |
| 1157 | printf("Machine has no user-selectable audio hardware " |
| 1158 | "(it may or may not have always-present audio hardware).\n"); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1159 | } |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 1160 | exit(!is_help_option(optarg)); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1161 | } |
| 1162 | else { |
| 1163 | size_t l; |
| 1164 | const char *p; |
| 1165 | char *e; |
| 1166 | int bad_card = 0; |
| 1167 | |
| 1168 | if (!strcmp(optarg, "all")) { |
| 1169 | for (c = soundhw; c->name; ++c) { |
| 1170 | c->enabled = 1; |
| 1171 | } |
| 1172 | return; |
| 1173 | } |
| 1174 | |
| 1175 | p = optarg; |
| 1176 | while (*p) { |
| 1177 | e = strchr(p, ','); |
| 1178 | l = !e ? strlen(p) : (size_t) (e - p); |
| 1179 | |
| 1180 | for (c = soundhw; c->name; ++c) { |
| 1181 | if (!strncmp(c->name, p, l) && !c->name[l]) { |
| 1182 | c->enabled = 1; |
| 1183 | break; |
| 1184 | } |
| 1185 | } |
| 1186 | |
| 1187 | if (!c->name) { |
| 1188 | if (l > 80) { |
| 1189 | fprintf(stderr, |
| 1190 | "Unknown sound card name (too big to show)\n"); |
| 1191 | } |
| 1192 | else { |
| 1193 | fprintf(stderr, "Unknown sound card name `%.*s'\n", |
| 1194 | (int) l, p); |
| 1195 | } |
| 1196 | bad_card = 1; |
| 1197 | } |
| 1198 | p += l + (e != NULL); |
| 1199 | } |
| 1200 | |
| 1201 | if (bad_card) { |
| 1202 | goto show_valid_cards; |
| 1203 | } |
| 1204 | } |
| 1205 | } |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1206 | |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1207 | void audio_init(void) |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1208 | { |
| 1209 | struct soundhw *c; |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1210 | ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL); |
| 1211 | PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1212 | |
| 1213 | for (c = soundhw; c->name; ++c) { |
| 1214 | if (c->enabled) { |
| 1215 | if (c->isa) { |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1216 | if (!isa_bus) { |
| 1217 | fprintf(stderr, "ISA bus not available for %s\n", c->name); |
| 1218 | exit(1); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1219 | } |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1220 | c->init.init_isa(isa_bus); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1221 | } else { |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1222 | if (!pci_bus) { |
| 1223 | fprintf(stderr, "PCI bus not available for %s\n", c->name); |
| 1224 | exit(1); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1225 | } |
Paolo Bonzini | f81222b | 2013-04-18 18:44:03 +0200 | [diff] [blame] | 1226 | c->init.init_pci(pci_bus); |
Isaku Yamahata | 0dfa5ef | 2011-01-21 19:53:45 +0900 | [diff] [blame] | 1227 | } |
| 1228 | } |
| 1229 | } |
| 1230 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1231 | |
| 1232 | int qemu_uuid_parse(const char *str, uint8_t *uuid) |
| 1233 | { |
| 1234 | int ret; |
| 1235 | |
| 1236 | if (strlen(str) != 36) { |
| 1237 | return -1; |
| 1238 | } |
| 1239 | |
| 1240 | ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3], |
| 1241 | &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9], |
| 1242 | &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], |
| 1243 | &uuid[15]); |
| 1244 | |
| 1245 | if (ret != 16) { |
| 1246 | return -1; |
| 1247 | } |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1248 | return 0; |
| 1249 | } |
| 1250 | |
Laszlo Ersek | 0c764a9 | 2013-03-21 00:23:17 +0100 | [diff] [blame] | 1251 | void do_acpitable_option(const QemuOpts *opts) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1252 | { |
| 1253 | #ifdef TARGET_I386 |
Laszlo Ersek | 2308432 | 2013-03-21 00:23:19 +0100 | [diff] [blame] | 1254 | Error *err = NULL; |
| 1255 | |
| 1256 | acpi_table_add(opts, &err); |
| 1257 | if (err) { |
Seiji Aguchi | 4a44d85 | 2013-08-05 15:40:44 -0400 | [diff] [blame] | 1258 | error_report("Wrong acpi table provided: %s", |
| 1259 | error_get_pretty(err)); |
Laszlo Ersek | 2308432 | 2013-03-21 00:23:19 +0100 | [diff] [blame] | 1260 | error_free(err); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1261 | exit(1); |
| 1262 | } |
| 1263 | #endif |
| 1264 | } |
| 1265 | |
Markus Armbruster | 4f953d2 | 2013-08-16 15:18:29 +0200 | [diff] [blame] | 1266 | void do_smbios_option(QemuOpts *opts) |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1267 | { |
| 1268 | #ifdef TARGET_I386 |
Markus Armbruster | 4f953d2 | 2013-08-16 15:18:29 +0200 | [diff] [blame] | 1269 | smbios_entry_add(opts); |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1270 | #endif |
| 1271 | } |
| 1272 | |
| 1273 | void cpudef_init(void) |
| 1274 | { |
| 1275 | #if defined(cpudef_setup) |
| 1276 | cpudef_setup(); /* parse cpu definitions in target config file */ |
| 1277 | #endif |
| 1278 | } |
| 1279 | |
Anthony PERARD | 303d4e8 | 2010-09-21 20:05:31 +0100 | [diff] [blame] | 1280 | int tcg_available(void) |
| 1281 | { |
| 1282 | return 1; |
| 1283 | } |
| 1284 | |
Blue Swirl | ad96090 | 2010-03-29 19:23:52 +0000 | [diff] [blame] | 1285 | int kvm_available(void) |
| 1286 | { |
| 1287 | #ifdef CONFIG_KVM |
| 1288 | return 1; |
| 1289 | #else |
| 1290 | return 0; |
| 1291 | #endif |
| 1292 | } |
| 1293 | |
| 1294 | int xen_available(void) |
| 1295 | { |
| 1296 | #ifdef CONFIG_XEN |
| 1297 | return 1; |
| 1298 | #else |
| 1299 | return 0; |
| 1300 | #endif |
| 1301 | } |
Daniel P. Berrange | 99afc91 | 2012-08-20 15:31:38 +0100 | [diff] [blame] | 1302 | |
| 1303 | |
| 1304 | TargetInfo *qmp_query_target(Error **errp) |
| 1305 | { |
| 1306 | TargetInfo *info = g_malloc0(sizeof(*info)); |
| 1307 | |
Paolo Bonzini | c02a955 | 2013-06-04 14:45:28 +0200 | [diff] [blame] | 1308 | info->arch = g_strdup(TARGET_NAME); |
Daniel P. Berrange | 99afc91 | 2012-08-20 15:31:38 +0100 | [diff] [blame] | 1309 | |
| 1310 | return info; |
| 1311 | } |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1312 | |
| 1313 | /* Stub function that's gets run on the vcpu when its brought out of the |
| 1314 | VM to run inside qemu via async_run_on_cpu()*/ |
| 1315 | static void mig_sleep_cpu(void *opq) |
| 1316 | { |
| 1317 | qemu_mutex_unlock_iothread(); |
| 1318 | g_usleep(30*1000); |
| 1319 | qemu_mutex_lock_iothread(); |
| 1320 | } |
| 1321 | |
| 1322 | /* To reduce the dirty rate explicitly disallow the VCPUs from spending |
| 1323 | much time in the VM. The migration thread will try to catchup. |
| 1324 | Workload will experience a performance drop. |
| 1325 | */ |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1326 | static void mig_throttle_guest_down(void) |
| 1327 | { |
Andreas Färber | 38fcbd3 | 2013-07-07 19:50:23 +0200 | [diff] [blame] | 1328 | CPUState *cpu; |
| 1329 | |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1330 | qemu_mutex_lock_iothread(); |
Andreas Färber | 38fcbd3 | 2013-07-07 19:50:23 +0200 | [diff] [blame] | 1331 | CPU_FOREACH(cpu) { |
| 1332 | async_run_on_cpu(cpu, mig_sleep_cpu, NULL); |
| 1333 | } |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1334 | qemu_mutex_unlock_iothread(); |
| 1335 | } |
| 1336 | |
| 1337 | static void check_guest_throttling(void) |
| 1338 | { |
| 1339 | static int64_t t0; |
| 1340 | int64_t t1; |
| 1341 | |
| 1342 | if (!mig_throttle_on) { |
| 1343 | return; |
| 1344 | } |
| 1345 | |
| 1346 | if (!t0) { |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 1347 | t0 = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1348 | return; |
| 1349 | } |
| 1350 | |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 1351 | t1 = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
Chegu Vinod | 7ca1dfa | 2013-06-24 03:47:39 -0600 | [diff] [blame] | 1352 | |
| 1353 | /* If it has been more than 40 ms since the last time the guest |
| 1354 | * was throttled then do it again. |
| 1355 | */ |
| 1356 | if (40 < (t1-t0)/1000000) { |
| 1357 | mig_throttle_guest_down(); |
| 1358 | t0 = t1; |
| 1359 | } |
| 1360 | } |