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Re: [Xen-devel] [PATCH 2/2] Virtual frame buffer: user space backend

  • To: "Markus Armbruster" <armbru@xxxxxxxxxx>
  • From: "Christian Limpach" <christian.limpach@xxxxxxxxx>
  • Date: Fri, 7 Jul 2006 17:57:52 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 07 Jul 2006 09:58:18 -0700
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On 6/26/06, Markus Armbruster <armbru@xxxxxxxxxx> wrote:
Straightforward conversion to Xenstore.

Applies to hg repository at http://hg.codemonkey.ws/vncfb

This also looks ok, two of the frontend issues apply here as well:
- handling of the ring indexes (masking of indexes and use of barriers)
- xenbus transactions can fail and there's no code to retry failed transactions

Additionally, it would be good to use the vnc server code which we're
going to use in the updated ioemu.  Sharing code for the framebuffers
for pv and non-pv domains is good and we don't want the dependency on
libvncserver anymore and the qemu vnc code is much compacter.  You'll
want to grab the vnc files which come with qemu 0.8.1
(http://xenbits.xensource.com/chris/ioemu-cvs-qemu-0.8.1.tar.bz2) and
then apply the following two patches:

Ideally, we'd move qemu's vnc support into a library to make it reusable.


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