virtio-serial-bus: bump up control vq size to 32

The current default of 16 buffers for the control vq is too small.  We
can get more entries in there, for example when asking the guest to add
max. allowed ports.

Note: a more robust solution would involve some kind of event queueing
in host to guarantee no event loss. Added a TODO to look into
this later.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
1 file changed
tree: d8214953bd37f5b715e6977e0753c3b3f7721f7f
  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. linux-user/
  12. net/
  13. pc-bios/
  14. QMP/
  15. roms/
  16. slirp/
  17. sysconfigs/
  18. target-alpha/
  19. target-arm/
  20. target-cris/
  21. target-i386/
  22. target-m68k/
  23. target-microblaze/
  24. target-mips/
  25. target-ppc/
  26. target-s390x/
  27. target-sh4/
  28. target-sparc/
  29. tcg/
  30. tests/
  31. ui/
  32. .gitignore
  33. .gitmodules
  34. a.out.h
  35. acl.c
  36. acl.h
  37. aes.c
  38. aes.h
  39. aio.c
  40. alpha-dis.c
  41. alpha.ld
  42. arch_init.c
  43. arch_init.h
  44. arm-dis.c
  45. arm-semi.c
  46. arm.ld
  47. async.c
  48. balloon.c
  49. balloon.h
  50. block-migration.c
  51. block-migration.h
  52. block.c
  53. block.h
  54. block_int.h
  55. blockdev.c
  56. blockdev.h
  57. bswap.h
  58. bt-host.c
  59. bt-host.h
  60. bt-vhci.c
  61. buffered_file.c
  62. buffered_file.h
  63. cache-utils.c
  64. cache-utils.h
  65. Changelog
  66. check-qdict.c
  67. check-qfloat.c
  68. check-qint.c
  69. check-qjson.c
  70. check-qlist.c
  71. check-qstring.c
  72. cmd.c
  73. cmd.h
  74. CODING_STYLE
  75. compatfd.c
  76. compatfd.h
  77. config.h
  78. configure
  79. console.c
  80. console.h
  81. COPYING
  82. COPYING.LIB
  83. cpu-all.h
  84. cpu-common.h
  85. cpu-defs.h
  86. cpu-exec.c
  87. cpus.c
  88. cpus.h
  89. create_config
  90. cris-dis.c
  91. cursor.c
  92. cursor_hidden.xpm
  93. cursor_left_ptr.xpm
  94. cutils.c
  95. def-helper.h
  96. device_tree.c
  97. device_tree.h
  98. dis-asm.h
  99. disas.c
  100. disas.h
  101. dma-helpers.c
  102. dma.h
  103. dyngen-exec.h
  104. elf.h
  105. envlist.c
  106. envlist.h
  107. exec-all.h
  108. exec.c
  109. feature_to_c.sh
  110. gdbstub.c
  111. gdbstub.h
  112. gen-icount.h
  113. HACKING
  114. hmp-commands.hx
  115. host-utils.c
  116. host-utils.h
  117. hpet.h
  118. hppa-dis.c
  119. hppa.ld
  120. hxtool
  121. i386-dis.c
  122. i386.ld
  123. ia64-dis.c
  124. ia64.ld
  125. input.c
  126. ioport-user.c
  127. ioport.c
  128. ioport.h
  129. iorange.h
  130. iov.c
  131. iov.h
  132. json-lexer.c
  133. json-lexer.h
  134. json-parser.c
  135. json-parser.h
  136. json-streamer.c
  137. json-streamer.h
  138. kvm-all.c
  139. kvm-stub.c
  140. kvm.h
  141. libfdt_env.h
  142. LICENSE
  143. linux-aio.c
  144. m68k-dis.c
  145. m68k-semi.c
  146. m68k.ld
  147. MAINTAINERS
  148. make_device_config.sh
  149. Makefile
  150. Makefile.dis
  151. Makefile.hw
  152. Makefile.objs
  153. Makefile.target
  154. Makefile.user
  155. microblaze-dis.c
  156. migration-exec.c
  157. migration-fd.c
  158. migration-tcp.c
  159. migration-unix.c
  160. migration.c
  161. migration.h
  162. mips-dis.c
  163. mips.ld
  164. module.c
  165. module.h
  166. monitor.c
  167. monitor.h
  168. nbd.c
  169. nbd.h
  170. net-checksum.c
  171. net.c
  172. net.h
  173. notify.c
  174. notify.h
  175. os-posix.c
  176. os-win32.c
  177. osdep.c
  178. osdep.h
  179. oslib-posix.c
  180. oslib-win32.c
  181. path.c
  182. pci-ids.txt
  183. pflib.c
  184. pflib.h
  185. poison.h
  186. posix-aio-compat.c
  187. ppc-dis.c
  188. ppc.ld
  189. ppc64.ld
  190. qbool.c
  191. qbool.h
  192. qdict-test-data.txt
  193. qdict.c
  194. qdict.h
  195. qemu-aio.h
  196. qemu-barrier.h
  197. qemu-binfmt-conf.sh
  198. qemu-char.c
  199. qemu-char.h
  200. qemu-common.h
  201. qemu-config.c
  202. qemu-config.h
  203. qemu-doc.texi
  204. qemu-error.c
  205. qemu-error.h
  206. qemu-img-cmds.hx
  207. qemu-img.c
  208. qemu-img.texi
  209. qemu-io.c
  210. qemu-lock.h
  211. qemu-log.h
  212. qemu-malloc.c
  213. qemu-nbd.c
  214. qemu-nbd.texi
  215. qemu-objects.h
  216. qemu-option.c
  217. qemu-option.h
  218. qemu-options.h
  219. qemu-options.hx
  220. qemu-os-posix.h
  221. qemu-os-win32.h
  222. qemu-queue.h
  223. qemu-sockets.c
  224. qemu-tech.texi
  225. qemu-thread.c
  226. qemu-thread.h
  227. qemu-timer-common.c
  228. qemu-timer.c
  229. qemu-timer.h
  230. qemu-tool.c
  231. qemu-x509.h
  232. qemu.sasl
  233. qemu_socket.h
  234. qerror.c
  235. qerror.h
  236. qfloat.c
  237. qfloat.h
  238. qint.c
  239. qint.h
  240. qjson.c
  241. qjson.h
  242. qlist.c
  243. qlist.h
  244. qmp-commands.hx
  245. qobject.h
  246. qstring.c
  247. qstring.h
  248. range.h
  249. readline.c
  250. readline.h
  251. README
  252. rules.mak
  253. rwhandler.c
  254. rwhandler.h
  255. s390-dis.c
  256. s390.ld
  257. savevm.c
  258. sh4-dis.c
  259. simpletrace.c
  260. simpletrace.h
  261. simpletrace.py
  262. softmmu-semi.h
  263. softmmu_defs.h
  264. softmmu_exec.h
  265. softmmu_header.h
  266. softmmu_template.h
  267. sparc-dis.c
  268. sparc.ld
  269. sparc64.ld
  270. sysemu.h
  271. targphys.h
  272. tcg-runtime.c
  273. texi2pod.pl
  274. thunk.c
  275. thunk.h
  276. TODO
  277. trace-events
  278. tracetool
  279. translate-all.c
  280. uboot_image.h
  281. usb-bsd.c
  282. usb-linux.c
  283. usb-stub.c
  284. VERSION
  285. version.rc
  286. vgafont.h
  287. vl.c
  288. x86_64.ld