block: fix snapshot on QED

QED's opaque data includes a pointer back to the BlockDriverState.
This breaks when bdrv_append shuffles data between bs_new and bs_top.
To avoid this, add a "rebind" function that tells the driver about
the new relationship between the BlockDriverState and its opaque.

The patch also adds rebind to VVFAT for completeness, even though
it is not used with live snapshots.

Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
4 files changed
tree: 154bfaea2368cfcbb39a2d2610dd9019510a14ff
  1. audio/
  2. block/
  3. bsd-user/
  4. default-configs/
  5. docs/
  6. fpu/
  7. fsdev/
  8. gdb-xml/
  9. hw/
  10. include/
  11. libcacard/
  12. linux-headers/
  13. linux-user/
  14. net/
  15. pc-bios/
  16. qapi/
  17. qga/
  18. QMP/
  19. qom/
  20. roms/
  21. scripts/
  22. slirp/
  23. sysconfigs/
  24. target-alpha/
  25. target-arm/
  26. target-cris/
  27. target-i386/
  28. target-lm32/
  29. target-m68k/
  30. target-microblaze/
  31. target-mips/
  32. target-ppc/
  33. target-s390x/
  34. target-sh4/
  35. target-sparc/
  36. target-unicore32/
  37. target-xtensa/
  38. tcg/
  39. tests/
  40. trace/
  41. ui/
  42. .gitignore
  43. .gitmodules
  44. .mailmap
  45. a.out.h
  46. acl.c
  47. acl.h
  48. aes.c
  49. aes.h
  50. aio.c
  51. alpha-dis.c
  52. alpha.ld
  53. arch_init.c
  54. arch_init.h
  55. arm-dis.c
  56. arm-semi.c
  57. arm.ld
  58. async.c
  59. balloon.c
  60. balloon.h
  61. bitmap.c
  62. bitmap.h
  63. bitops.c
  64. bitops.h
  65. block-migration.c
  66. block-migration.h
  67. block.c
  68. block.h
  69. block_int.h
  70. blockdev.c
  71. blockdev.h
  72. bswap.h
  73. bt-host.c
  74. bt-host.h
  75. bt-vhci.c
  76. buffered_file.c
  77. buffered_file.h
  78. cache-utils.c
  79. cache-utils.h
  80. Changelog
  81. cmd.c
  82. cmd.h
  83. CODING_STYLE
  84. compatfd.c
  85. compatfd.h
  86. compiler.h
  87. config.h
  88. configure
  89. console.c
  90. console.h
  91. COPYING
  92. COPYING.LIB
  93. coroutine-gthread.c
  94. coroutine-sigaltstack.c
  95. coroutine-ucontext.c
  96. coroutine-win32.c
  97. cpu-all.h
  98. cpu-common.h
  99. cpu-defs.h
  100. cpu-exec.c
  101. cpus.c
  102. cpus.h
  103. cputlb.c
  104. cputlb.h
  105. cris-dis.c
  106. cursor.c
  107. cursor_hidden.xpm
  108. cursor_left_ptr.xpm
  109. cutils.c
  110. def-helper.h
  111. device_tree.c
  112. device_tree.h
  113. dis-asm.h
  114. disas.c
  115. disas.h
  116. dma-helpers.c
  117. dma.h
  118. dyngen-exec.h
  119. elf.h
  120. envlist.c
  121. envlist.h
  122. error.c
  123. error.h
  124. error_int.h
  125. event_notifier.c
  126. event_notifier.h
  127. exec-all.h
  128. exec-memory.h
  129. exec-obsolete.h
  130. exec.c
  131. gdbstub.c
  132. gdbstub.h
  133. gen-icount.h
  134. HACKING
  135. hmp-commands.hx
  136. hmp.c
  137. hmp.h
  138. host-utils.c
  139. host-utils.h
  140. hppa-dis.c
  141. hppa.ld
  142. i386-dis.c
  143. i386.ld
  144. ia64-dis.c
  145. ia64.ld
  146. input.c
  147. int128.h
  148. iohandler.c
  149. ioport-user.c
  150. ioport.c
  151. ioport.h
  152. iorange.h
  153. iov.c
  154. iov.h
  155. json-lexer.c
  156. json-lexer.h
  157. json-parser.c
  158. json-parser.h
  159. json-streamer.c
  160. json-streamer.h
  161. kvm-all.c
  162. kvm-stub.c
  163. kvm.h
  164. libfdt_env.h
  165. LICENSE
  166. linux-aio.c
  167. lm32-dis.c
  168. m68k-dis.c
  169. m68k-semi.c
  170. m68k.ld
  171. main-loop.c
  172. main-loop.h
  173. MAINTAINERS
  174. Makefile
  175. Makefile.dis
  176. Makefile.hw
  177. Makefile.objs
  178. Makefile.target
  179. Makefile.user
  180. memory.c
  181. memory.h
  182. microblaze-dis.c
  183. migration-exec.c
  184. migration-fd.c
  185. migration-tcp.c
  186. migration-unix.c
  187. migration.c
  188. migration.h
  189. mips-dis.c
  190. mips.ld
  191. module.c
  192. module.h
  193. monitor.c
  194. monitor.h
  195. nbd.c
  196. nbd.h
  197. net.c
  198. net.h
  199. notify.c
  200. notify.h
  201. os-posix.c
  202. os-win32.c
  203. osdep.c
  204. osdep.h
  205. oslib-posix.c
  206. oslib-win32.c
  207. path.c
  208. pci-ids.txt
  209. pflib.c
  210. pflib.h
  211. poison.h
  212. posix-aio-compat.c
  213. ppc-dis.c
  214. ppc.ld
  215. ppc64.ld
  216. qapi-schema-guest.json
  217. qapi-schema-test.json
  218. qapi-schema.json
  219. qbool.c
  220. qbool.h
  221. qdict-test-data.txt
  222. qdict.c
  223. qdict.h
  224. qemu-aio.h
  225. qemu-barrier.h
  226. qemu-bridge-helper.c
  227. qemu-char.c
  228. qemu-char.h
  229. qemu-common.h
  230. qemu-config.c
  231. qemu-config.h
  232. qemu-coroutine-int.h
  233. qemu-coroutine-io.c
  234. qemu-coroutine-lock.c
  235. qemu-coroutine-sleep.c
  236. qemu-coroutine.c
  237. qemu-coroutine.h
  238. qemu-doc.texi
  239. qemu-error.c
  240. qemu-error.h
  241. qemu-file.h
  242. qemu-ga.c
  243. qemu-img-cmds.hx
  244. qemu-img.c
  245. qemu-img.texi
  246. qemu-io.c
  247. qemu-lock.h
  248. qemu-log.h
  249. qemu-nbd.c
  250. qemu-nbd.texi
  251. qemu-objects.h
  252. qemu-option.c
  253. qemu-option.h
  254. qemu-options-wrapper.h
  255. qemu-options.h
  256. qemu-options.hx
  257. qemu-os-posix.h
  258. qemu-os-win32.h
  259. qemu-progress.c
  260. qemu-queue.h
  261. qemu-sockets.c
  262. qemu-tech.texi
  263. qemu-thread-posix.c
  264. qemu-thread-posix.h
  265. qemu-thread-win32.c
  266. qemu-thread-win32.h
  267. qemu-thread.h
  268. qemu-timer-common.c
  269. qemu-timer.c
  270. qemu-timer.h
  271. qemu-tls.h
  272. qemu-tool.c
  273. qemu-user.c
  274. qemu-x509.h
  275. qemu-xattr.h
  276. qemu.sasl
  277. qemu_socket.h
  278. qerror.c
  279. qerror.h
  280. qfloat.c
  281. qfloat.h
  282. qint.c
  283. qint.h
  284. qjson.c
  285. qjson.h
  286. qlist.c
  287. qlist.h
  288. qmp-commands.hx
  289. qmp.c
  290. qobject.h
  291. qstring.c
  292. qstring.h
  293. qtest.c
  294. qtest.h
  295. range.h
  296. readline.c
  297. readline.h
  298. README
  299. rules.mak
  300. s390-dis.c
  301. s390.ld
  302. savevm.c
  303. sh4-dis.c
  304. softmmu-semi.h
  305. softmmu_defs.h
  306. softmmu_exec.h
  307. softmmu_header.h
  308. softmmu_template.h
  309. sparc-dis.c
  310. sparc.ld
  311. sparc64.ld
  312. spice-qemu-char.c
  313. sysemu.h
  314. targphys.h
  315. tcg-runtime.c
  316. tci-dis.c
  317. tci.c
  318. thunk.c
  319. thunk.h
  320. TODO
  321. trace-events
  322. translate-all.c
  323. uboot_image.h
  324. user-exec.c
  325. VERSION
  326. version.rc
  327. vgafont.h
  328. vl.c
  329. vmstate.h
  330. x86_64.ld
  331. xen-all.c
  332. xen-mapcache.c
  333. xen-mapcache.h
  334. xen-stub.c
  335. xtensa-semi.c