[Qemu-commits] [qemu/qemu] 4ada79: xen: use native disk xenbus protocol if possible

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: 4ada797b05a52ac824a710c67216b37739026a64
      
https://github.com/qemu/qemu/commit/4ada797b05a52ac824a710c67216b37739026a64
  Author: Juergen Gross <address@hidden>
  Date:   2016-08-30 (Tue, 30 Aug 2016)

  Changed paths:
    M hw/block/xen_disk.c

  Log Message:
  -----------
  xen: use native disk xenbus protocol if possible

The qdisk implementation is using the native xenbus protocol only in
case of no protocol specified at all. As using the explicit 32- or
64-bit protocol is slower than the native one due to copying requests
not by memcpy but element for element, this is not optimal.

Correct this by using the native protocol in case word sizes of
frontend and backend match.

Signed-off-by: Juergen Gross <address@hidden>
Reviewed-by: Anthony PERARD <address@hidden>
Signed-off-by: Stefano Stabellini <address@hidden>


  Commit: 1fd66154fdf8305e6668a96046a22b863b4d7320
      
https://github.com/qemu/qemu/commit/1fd66154fdf8305e6668a96046a22b863b4d7320
  Author: Peter Maydell <address@hidden>
  Date:   2016-09-06 (Tue, 06 Sep 2016)

  Changed paths:
    M hw/block/xen_disk.c

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/sstabellini/tags/xen-20160905' into 
staging

Xen 2016/09/05

# gpg: Signature made Mon 05 Sep 2016 19:59:47 BST
# gpg:                using RSA key 0x894F8F4870E1AE90
# gpg: Good signature from "Stefano Stabellini <address@hidden>"
# Primary key fingerprint: D04E 33AB A51F 67BA 07D3  0AEA 894F 8F48 70E1 AE90

* remotes/sstabellini/tags/xen-20160905:
  xen: use native disk xenbus protocol if possible

Signed-off-by: Peter Maydell <address@hidden>


Compare: https://github.com/qemu/qemu/compare/e87d397e5ef6...1fd66154fdf8