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Re: [Qemu-devel] [PATCH 00/10] xen: pv domain support.

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH 00/10] xen: pv domain support.
Date: Fri, 03 Apr 2009 22:24:45 +0200
User-agent: Thunderbird (X11/20090320)

Laurent Vivier wrote:
> Le mercredi 01 avril 2009 à 23:39 +0200, Gerd Hoffmann a écrit :
>> Hi,
> Hi,
>> It's been a while, but after a looooooooooooong time we've (hopefully)
>> finally sorted the merging issues with qemu-xen.  So here is a fresh
>> version of the xen support for qemu patch series.  Short overview
>> (individual patches have longer descriptions):
> Could you explain how to use it.
> Do you need a xend and xenstored running on the host ?

Depends ;)

Long term plan is to have three ways of supporting xen guests in qemu
(pv only for now):

#1: Xen emulation (aka xenner).  No code for this is submitted (yet).
    That will allow running xen kernels in qemu.  No xend, no xenstored
    needed.  Also no Xen hypervisor.

#2: Make qemu attach to an existing domain.  That is the way qemu-dm
    (xenified qemu version) works right now:  xend creates the domain,
    and qemu attaches to it to provide console and framebuffer backend.
    Obviously needs both xend and xenstored.

#3: Make qemu create xen domains.  xenstored is still needed then.  You
    can run without xend though.

#2 works with the first 4 patches applied.
#3 works with all patches applied.
#1 needs more patches which are bitrotting in my git repo right now.
   I'll dig them out once this patchset is merged.


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