Merge remote-tracking branch 'kwolf/for-anthony' into staging

* kwolf/for-anthony:
  test-coroutine: add performance test for nesting
  coroutine: adding configure option for sigaltstack coroutine backend
  coroutine: adding configure choose mechanism for coroutine backend
  coroutine: adding sigaltstack method (.c source)
  qcow2: Reduce number of I/O requests
  qcow2: Add qcow2_alloc_clusters_at()
  qcow2: Factor out count_cow_clusters
  qmp: convert blockdev-snapshot-sync to a wrapper around transactions
  add mode field to blockdev-snapshot-sync transaction item
  rename blockdev-group-snapshot-sync
  qapi: complete implementation of unions
  use QSIMPLEQ_FOREACH_SAFE when freeing list elements
  Add 'make check-block'
  make check: Add qemu-iotests subset
  qemu-iotests: Mark some tests as quick
  qcow2: Add error messages in qcow2_truncate
  block: handle -EBUSY in bdrv_commit_all()
  qcow2: Add some tracing
  qed: do not evict in-use L2 table cache entries
  Group snapshot: Fix format name for backing file
tree: ecdecee94946580232309f51d1498897fe552f49
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. fsdev/
  9. gdb-xml/
  10. hw/
  11. include/
  12. libcacard/
  13. linux-headers/
  14. linux-user/
  15. net/
  16. pc-bios/
  17. qapi/
  18. qga/
  19. QMP/
  20. qom/
  21. roms/
  22. scripts/
  23. slirp/
  24. sysconfigs/
  25. target-alpha/
  26. target-arm/
  27. target-cris/
  28. target-i386/
  29. target-lm32/
  30. target-m68k/
  31. target-microblaze/
  32. target-mips/
  33. target-ppc/
  34. target-s390x/
  35. target-sh4/
  36. target-sparc/
  37. target-unicore32/
  38. target-xtensa/
  39. tcg/
  40. tests/
  41. trace/
  42. ui/
  43. .gitignore
  44. .gitmodules
  45. .mailmap
  46. a.out.h
  47. acl.c
  48. acl.h
  49. aes.c
  50. aes.h
  51. aio.c
  52. alpha-dis.c
  53. alpha.ld
  54. arch_init.c
  55. arch_init.h
  56. arm-dis.c
  57. arm-semi.c
  58. arm.ld
  59. async.c
  60. balloon.c
  61. balloon.h
  62. bitmap.c
  63. bitmap.h
  64. bitops.c
  65. bitops.h
  66. block-migration.c
  67. block-migration.h
  68. block.c
  69. block.h
  70. block_int.h
  71. blockdev.c
  72. blockdev.h
  73. bswap.h
  74. bt-host.c
  75. bt-host.h
  76. bt-vhci.c
  77. buffered_file.c
  78. buffered_file.h
  79. cache-utils.c
  80. cache-utils.h
  81. Changelog
  82. check-qdict.c
  83. check-qfloat.c
  84. check-qint.c
  85. check-qjson.c
  86. check-qlist.c
  87. check-qstring.c
  88. cmd.c
  89. cmd.h
  90. CODING_STYLE
  91. compatfd.c
  92. compatfd.h
  93. compiler.h
  94. config.h
  95. configure
  96. console.c
  97. console.h
  98. COPYING
  99. COPYING.LIB
  100. coroutine-gthread.c
  101. coroutine-sigaltstack.c
  102. coroutine-ucontext.c
  103. coroutine-win32.c
  104. cpu-all.h
  105. cpu-common.h
  106. cpu-defs.h
  107. cpu-exec.c
  108. cpus.c
  109. cpus.h
  110. cris-dis.c
  111. cursor.c
  112. cursor_hidden.xpm
  113. cursor_left_ptr.xpm
  114. cutils.c
  115. def-helper.h
  116. device_tree.c
  117. device_tree.h
  118. dis-asm.h
  119. disas.c
  120. disas.h
  121. dma-helpers.c
  122. dma.h
  123. dyngen-exec.h
  124. elf.h
  125. envlist.c
  126. envlist.h
  127. error.c
  128. error.h
  129. error_int.h
  130. event_notifier.c
  131. event_notifier.h
  132. exec-all.h
  133. exec-memory.h
  134. exec-obsolete.h
  135. exec.c
  136. gdbstub.c
  137. gdbstub.h
  138. gen-icount.h
  139. HACKING
  140. hmp-commands.hx
  141. hmp.c
  142. hmp.h
  143. host-utils.c
  144. host-utils.h
  145. hppa-dis.c
  146. hppa.ld
  147. i386-dis.c
  148. i386.ld
  149. ia64-dis.c
  150. ia64.ld
  151. input.c
  152. int128.h
  153. iohandler.c
  154. ioport-user.c
  155. ioport.c
  156. ioport.h
  157. iorange.h
  158. iov.c
  159. iov.h
  160. json-lexer.c
  161. json-lexer.h
  162. json-parser.c
  163. json-parser.h
  164. json-streamer.c
  165. json-streamer.h
  166. kvm-all.c
  167. kvm-stub.c
  168. kvm.h
  169. libfdt_env.h
  170. LICENSE
  171. linux-aio.c
  172. m68k-dis.c
  173. m68k-semi.c
  174. m68k.ld
  175. main-loop.c
  176. main-loop.h
  177. MAINTAINERS
  178. Makefile
  179. Makefile.dis
  180. Makefile.hw
  181. Makefile.objs
  182. Makefile.target
  183. Makefile.user
  184. memory.c
  185. memory.h
  186. microblaze-dis.c
  187. migration-exec.c
  188. migration-fd.c
  189. migration-tcp.c
  190. migration-unix.c
  191. migration.c
  192. migration.h
  193. mips-dis.c
  194. mips.ld
  195. module.c
  196. module.h
  197. monitor.c
  198. monitor.h
  199. nbd.c
  200. nbd.h
  201. net.c
  202. net.h
  203. notify.c
  204. notify.h
  205. os-posix.c
  206. os-win32.c
  207. osdep.c
  208. osdep.h
  209. oslib-posix.c
  210. oslib-win32.c
  211. path.c
  212. pci-ids.txt
  213. pflib.c
  214. pflib.h
  215. poison.h
  216. posix-aio-compat.c
  217. ppc-dis.c
  218. ppc.ld
  219. ppc64.ld
  220. qapi-schema-guest.json
  221. qapi-schema-test.json
  222. qapi-schema.json
  223. qbool.c
  224. qbool.h
  225. qdict-test-data.txt
  226. qdict.c
  227. qdict.h
  228. qemu-aio.h
  229. qemu-barrier.h
  230. qemu-bridge-helper.c
  231. qemu-char.c
  232. qemu-char.h
  233. qemu-common.h
  234. qemu-config.c
  235. qemu-config.h
  236. qemu-coroutine-int.h
  237. qemu-coroutine-io.c
  238. qemu-coroutine-lock.c
  239. qemu-coroutine-sleep.c
  240. qemu-coroutine.c
  241. qemu-coroutine.h
  242. qemu-doc.texi
  243. qemu-error.c
  244. qemu-error.h
  245. qemu-file.h
  246. qemu-ga.c
  247. qemu-img-cmds.hx
  248. qemu-img.c
  249. qemu-img.texi
  250. qemu-io.c
  251. qemu-lock.h
  252. qemu-log.h
  253. qemu-nbd.c
  254. qemu-nbd.texi
  255. qemu-objects.h
  256. qemu-option.c
  257. qemu-option.h
  258. qemu-options-wrapper.h
  259. qemu-options.h
  260. qemu-options.hx
  261. qemu-os-posix.h
  262. qemu-os-win32.h
  263. qemu-progress.c
  264. qemu-queue.h
  265. qemu-sockets.c
  266. qemu-tech.texi
  267. qemu-thread-posix.c
  268. qemu-thread-posix.h
  269. qemu-thread-win32.c
  270. qemu-thread-win32.h
  271. qemu-thread.h
  272. qemu-timer-common.c
  273. qemu-timer.c
  274. qemu-timer.h
  275. qemu-tls.h
  276. qemu-tool.c
  277. qemu-x509.h
  278. qemu-xattr.h
  279. qemu.sasl
  280. qemu_socket.h
  281. qerror.c
  282. qerror.h
  283. qfloat.c
  284. qfloat.h
  285. qint.c
  286. qint.h
  287. qjson.c
  288. qjson.h
  289. qlist.c
  290. qlist.h
  291. qmp-commands.hx
  292. qmp.c
  293. qobject.h
  294. qstring.c
  295. qstring.h
  296. range.h
  297. readline.c
  298. readline.h
  299. README
  300. rules.mak
  301. s390-dis.c
  302. s390.ld
  303. savevm.c
  304. sh4-dis.c
  305. softmmu-semi.h
  306. softmmu_defs.h
  307. softmmu_exec.h
  308. softmmu_header.h
  309. softmmu_template.h
  310. sparc-dis.c
  311. sparc.ld
  312. sparc64.ld
  313. spice-qemu-char.c
  314. sysemu.h
  315. targphys.h
  316. tcg-runtime.c
  317. tci-dis.c
  318. tci.c
  319. test-coroutine.c
  320. test-qmp-commands.c
  321. test-qmp-input-visitor.c
  322. test-qmp-output-visitor.c
  323. test-string-input-visitor.c
  324. test-string-output-visitor.c
  325. thunk.c
  326. thunk.h
  327. TODO
  328. trace-events
  329. translate-all.c
  330. uboot_image.h
  331. usb-bsd.c
  332. usb-linux.c
  333. usb-redir.c
  334. usb-stub.c
  335. user-exec.c
  336. VERSION
  337. version.rc
  338. vgafont.h
  339. vl.c
  340. vmstate.h
  341. x86_64.ld
  342. xen-all.c
  343. xen-mapcache.c
  344. xen-mapcache.h
  345. xen-stub.c
  346. xtensa-semi.c