xen: backend driver core (Gerd Hoffmann)

This patch adds infrastructure for xen backend drivers living in qemu,
so drivers don't need to implement common stuff on their own.  It's
mostly xenbus management stuff: some functions to access xentore,
setting up xenstore watches, callbacks on device discovery and state
changes, handle event channel, ...

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7220 c046a42c-6fe2-441c-8c8c-71466251a162
5 files changed
tree: 34cacfd88a305067abeb16c64b3620e95305d8e8
  1. audio/
  2. bsd-user/
  3. darwin-user/
  4. fpu/
  5. gdb-xml/
  6. hw/
  7. keymaps/
  8. linux-user/
  9. pc-bios/
  10. slirp/
  11. target-alpha/
  12. target-arm/
  13. target-cris/
  14. target-i386/
  15. target-m68k/
  16. target-mips/
  17. target-ppc/
  18. target-sh4/
  19. target-sparc/
  20. tcg/
  21. tests/
  22. .gitignore
  23. a.out.h
  24. acl.c
  25. acl.h
  26. aes.c
  27. aes.h
  28. aio.c
  29. alpha-dis.c
  30. alpha.ld
  31. arm-dis.c
  32. arm-semi.c
  33. arm.ld
  34. balloon.h
  35. block-bochs.c
  36. block-cloop.c
  37. block-cow.c
  38. block-dmg.c
  39. block-nbd.c
  40. block-parallels.c
  41. block-qcow.c
  42. block-qcow2.c
  43. block-raw-posix.c
  44. block-raw-win32.c
  45. block-vmdk.c
  46. block-vpc.c
  47. block-vvfat.c
  48. block.c
  49. block.h
  50. block_int.h
  51. bswap.h
  52. bt-host.c
  53. bt-host.h
  54. bt-vhci.c
  55. buffered_file.c
  56. buffered_file.h
  57. cache-utils.c
  58. cache-utils.h
  59. Changelog
  60. cmd.c
  61. cmd.h
  62. cocoa.m
  63. CODING_STYLE
  64. configure
  65. console.c
  66. console.h
  67. COPYING
  68. COPYING.LIB
  69. cpu-all.h
  70. cpu-defs.h
  71. cpu-exec.c
  72. cris-dis.c
  73. curses.c
  74. curses_keys.h
  75. cutils.c
  76. d3des.c
  77. d3des.h
  78. def-helper.h
  79. device_tree.c
  80. device_tree.h
  81. dis-asm.h
  82. disas.c
  83. disas.h
  84. dma-helpers.c
  85. dma.h
  86. dyngen-exec.h
  87. elf.h
  88. elf_ops.h
  89. exec-all.h
  90. exec.c
  91. feature_to_c.sh
  92. gdbstub.c
  93. gdbstub.h
  94. gen-icount.h
  95. host-utils.c
  96. host-utils.h
  97. hostregs_helper.h
  98. hpet.h
  99. hppa-dis.c
  100. hppa.ld
  101. hxtool
  102. i386-dis.c
  103. i386.ld
  104. ia64.ld
  105. keymaps.c
  106. keymaps.h
  107. kqemu.c
  108. kqemu.h
  109. kvm-all.c
  110. kvm.h
  111. libfdt_env.h
  112. LICENSE
  113. loader.c
  114. m68k-dis.c
  115. m68k-semi.c
  116. m68k.ld
  117. MAINTAINERS
  118. Makefile
  119. Makefile.target
  120. migration-exec.c
  121. migration-tcp.c
  122. migration.c
  123. migration.h
  124. mips-dis.c
  125. mips.ld
  126. mipsel.ld
  127. monitor.c
  128. monitor.h
  129. nbd.c
  130. nbd.h
  131. net-checksum.c
  132. net.c
  133. net.h
  134. osdep.c
  135. osdep.h
  136. pci-ids.txt
  137. posix-aio-compat.c
  138. posix-aio-compat.h
  139. ppc-dis.c
  140. ppc.ld
  141. ppc64.ld
  142. qemu-aio.h
  143. qemu-binfmt-conf.sh
  144. qemu-char.c
  145. qemu-char.h
  146. qemu-common.h
  147. qemu-doc.texi
  148. qemu-img.c
  149. qemu-img.texi
  150. qemu-io.c
  151. qemu-lock.h
  152. qemu-log.h
  153. qemu-malloc.c
  154. qemu-nbd.c
  155. qemu-nbd.texi
  156. qemu-options.hx
  157. qemu-sockets.c
  158. qemu-tech.texi
  159. qemu-timer.h
  160. qemu-tool.c
  161. qemu.sasl
  162. qemu_socket.h
  163. readline.c
  164. readline.h
  165. README
  166. rules.mak
  167. s390-dis.c
  168. s390.ld
  169. savevm.c
  170. sdl.c
  171. sdl_keysym.h
  172. sh4-dis.c
  173. softmmu-semi.h
  174. softmmu_defs.h
  175. softmmu_exec.h
  176. softmmu_header.h
  177. softmmu_template.h
  178. sparc-dis.c
  179. sparc.ld
  180. sparc64.ld
  181. sys-queue.h
  182. sysemu.h
  183. tap-win32.c
  184. texi2pod.pl
  185. thunk.c
  186. thunk.h
  187. TODO
  188. translate-all.c
  189. uboot_image.h
  190. usb-bsd.c
  191. usb-linux.c
  192. usb-stub.c
  193. VERSION
  194. vgafont.h
  195. vl.c
  196. vnc-auth-sasl.c
  197. vnc-auth-sasl.h
  198. vnc-auth-vencrypt.c
  199. vnc-auth-vencrypt.h
  200. vnc-tls.c
  201. vnc-tls.h
  202. vnc.c
  203. vnc.h
  204. vnc_keysym.h
  205. vnchextile.h
  206. x86_64.ld
  207. x_keymap.c
  208. x_keymap.h