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qemu-android / qemu-android / 80763888bfcb89dddb2f4eeece8ffc2ed91bde40
commit80763888bfcb89dddb2f4eeece8ffc2ed91bde40[log] [tgz]
authorJan Kiszka <jan.kiszka@siemens.com>Mon Aug 22 19:12:12 2011 +0200
committerAnthony Liguori <aliguori@us.ibm.com>Mon Aug 22 14:37:03 2011 -0500
tree2e83ff9249c33705aa57dea82a98db9792688c6e
parentfe55ff6e6114c7382a68a2cf7230f125d4f3a248 [diff]
vga: Use linear mapping + dirty logging in chain 4 memory access mode

Most VGA memory access modes require MMIO handling as they demand weird
logic to get a byte from or into the video RAM. However, there is one
exception: chain 4 mode with all memory planes enabled for writing. This
mode actually allows lineary mapping, which can then be combined with
dirty logging to accelerate KVM.

This patch accelerates specifically VBE accesses like they are used by
grub in graphical mode. Not only the standard VGA adapter benefits from
this, also vmware and spice in VGA mode.

CC: Gerd Hoffmann <kraxel@redhat.com>
CC: Avi Kivity <avi@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2 files changed
tree: 2e83ff9249c33705aa57dea82a98db9792688c6e
  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. libcacard/
  12. linux-headers/
  13. linux-user/
  14. net/
  15. pc-bios/
  16. qapi/
  17. qga/
  18. QMP/
  19. roms/
  20. scripts/
  21. slirp/
  22. sysconfigs/
  23. target-alpha/
  24. target-arm/
  25. target-cris/
  26. target-i386/
  27. target-lm32/
  28. target-m68k/
  29. target-microblaze/
  30. target-mips/
  31. target-ppc/
  32. target-s390x/
  33. target-sh4/
  34. target-sparc/
  35. target-unicore32/
  36. tcg/
  37. tests/
  38. ui/
  39. .gitignore
  40. .gitmodules
  41. a.out.h
  42. acl.c
  43. acl.h
  44. aes.c
  45. aes.h
  46. aio.c
  47. alpha-dis.c
  48. alpha.ld
  49. arch_init.c
  50. arch_init.h
  51. arm-dis.c
  52. arm-semi.c
  53. arm.ld
  54. async.c
  55. balloon.c
  56. balloon.h
  57. bitmap.c
  58. bitmap.h
  59. bitops.c
  60. bitops.h
  61. block-migration.c
  62. block-migration.h
  63. block.c
  64. block.h
  65. block_int.h
  66. blockdev.c
  67. blockdev.h
  68. bswap.h
  69. bt-host.c
  70. bt-host.h
  71. bt-vhci.c
  72. buffered_file.c
  73. buffered_file.h
  74. cache-utils.c
  75. cache-utils.h
  76. Changelog
  77. check-qdict.c
  78. check-qfloat.c
  79. check-qint.c
  80. check-qjson.c
  81. check-qlist.c
  82. check-qstring.c
  83. cmd.c
  84. cmd.h
  85. CODING_STYLE
  86. compatfd.c
  87. compatfd.h
  88. compiler.h
  89. config.h
  90. configure
  91. console.c
  92. console.h
  93. COPYING
  94. COPYING.LIB
  95. coroutine-gthread.c
  96. coroutine-ucontext.c
  97. coroutine-win32.c
  98. cpu-all.h
  99. cpu-common.h
  100. cpu-defs.h
  101. cpu-exec.c
  102. cpus.c
  103. cpus.h
  104. cris-dis.c
  105. cursor.c
  106. cursor_hidden.xpm
  107. cursor_left_ptr.xpm
  108. cutils.c
  109. def-helper.h
  110. device_tree.c
  111. device_tree.h
  112. dis-asm.h
  113. disas.c
  114. disas.h
  115. dma-helpers.c
  116. dma.h
  117. dyngen-exec.h
  118. elf.h
  119. envlist.c
  120. envlist.h
  121. error.c
  122. error.h
  123. error_int.h
  124. exec-all.h
  125. exec-memory.h
  126. exec.c
  127. gdbstub.c
  128. gdbstub.h
  129. gen-icount.h
  130. HACKING
  131. hmp-commands.hx
  132. host-utils.c
  133. host-utils.h
  134. hpet.h
  135. hppa-dis.c
  136. hppa.ld
  137. i386-dis.c
  138. i386.ld
  139. ia64-dis.c
  140. ia64.ld
  141. input.c
  142. iohandler.c
  143. ioport-user.c
  144. ioport.c
  145. ioport.h
  146. iorange.h
  147. iov.c
  148. iov.h
  149. json-lexer.c
  150. json-lexer.h
  151. json-parser.c
  152. json-parser.h
  153. json-streamer.c
  154. json-streamer.h
  155. kvm-all.c
  156. kvm-stub.c
  157. kvm.h
  158. libfdt_env.h
  159. LICENSE
  160. linux-aio.c
  161. m68k-dis.c
  162. m68k-semi.c
  163. m68k.ld
  164. MAINTAINERS
  165. Makefile
  166. Makefile.dis
  167. Makefile.hw
  168. Makefile.objs
  169. Makefile.target
  170. Makefile.user
  171. memory.c
  172. memory.h
  173. microblaze-dis.c
  174. migration-exec.c
  175. migration-fd.c
  176. migration-tcp.c
  177. migration-unix.c
  178. migration.c
  179. migration.h
  180. mips-dis.c
  181. mips.ld
  182. module.c
  183. module.h
  184. monitor.c
  185. monitor.h
  186. nbd.c
  187. nbd.h
  188. net.c
  189. net.h
  190. notify.c
  191. notify.h
  192. os-posix.c
  193. os-win32.c
  194. osdep.c
  195. osdep.h
  196. oslib-posix.c
  197. oslib-win32.c
  198. path.c
  199. pci-ids.txt
  200. pflib.c
  201. pflib.h
  202. poison.h
  203. posix-aio-compat.c
  204. ppc-dis.c
  205. ppc.ld
  206. ppc64.ld
  207. qapi-schema-guest.json
  208. qapi-schema-test.json
  209. qbool.c
  210. qbool.h
  211. qdict-test-data.txt
  212. qdict.c
  213. qdict.h
  214. qemu-aio.h
  215. qemu-barrier.h
  216. qemu-char.c
  217. qemu-char.h
  218. qemu-common.h
  219. qemu-config.c
  220. qemu-config.h
  221. qemu-coroutine-int.h
  222. qemu-coroutine-lock.c
  223. qemu-coroutine.c
  224. qemu-coroutine.h
  225. qemu-doc.texi
  226. qemu-error.c
  227. qemu-error.h
  228. qemu-ga.c
  229. qemu-img-cmds.hx
  230. qemu-img.c
  231. qemu-img.texi
  232. qemu-io.c
  233. qemu-lock.h
  234. qemu-log.h
  235. qemu-nbd.c
  236. qemu-nbd.texi
  237. qemu-objects.h
  238. qemu-option.c
  239. qemu-option.h
  240. qemu-options.h
  241. qemu-options.hx
  242. qemu-os-posix.h
  243. qemu-os-win32.h
  244. qemu-progress.c
  245. qemu-queue.h
  246. qemu-sockets.c
  247. qemu-tech.texi
  248. qemu-thread-posix.c
  249. qemu-thread-posix.h
  250. qemu-thread-win32.c
  251. qemu-thread-win32.h
  252. qemu-thread.h
  253. qemu-timer-common.c
  254. qemu-timer.c
  255. qemu-timer.h
  256. qemu-tool.c
  257. qemu-x509.h
  258. qemu.sasl
  259. qemu_socket.h
  260. qerror.c
  261. qerror.h
  262. qfloat.c
  263. qfloat.h
  264. qint.c
  265. qint.h
  266. qjson.c
  267. qjson.h
  268. qlist.c
  269. qlist.h
  270. qmp-commands.hx
  271. qobject.h
  272. qstring.c
  273. qstring.h
  274. range.h
  275. readline.c
  276. readline.h
  277. README
  278. rules.mak
  279. rwhandler.c
  280. rwhandler.h
  281. s390-dis.c
  282. s390.ld
  283. savevm.c
  284. sh4-dis.c
  285. simpletrace.c
  286. simpletrace.h
  287. softmmu-semi.h
  288. softmmu_defs.h
  289. softmmu_exec.h
  290. softmmu_header.h
  291. softmmu_template.h
  292. sparc-dis.c
  293. sparc.ld
  294. sparc64.ld
  295. spice-qemu-char.c
  296. sysemu.h
  297. targphys.h
  298. tcg-runtime.c
  299. test-coroutine.c
  300. test-qmp-commands.c
  301. test-visitor.c
  302. thunk.c
  303. thunk.h
  304. TODO
  305. trace-events
  306. translate-all.c
  307. uboot_image.h
  308. usb-bsd.c
  309. usb-linux.c
  310. usb-redir.c
  311. usb-stub.c
  312. user-exec.c
  313. VERSION
  314. version.rc
  315. vgafont.h
  316. vl.c
  317. x86_64.ld
  318. xen-all.c
  319. xen-mapcache.c
  320. xen-mapcache.h
  321. xen-stub.c