Re: [Xen-devel] Xen 4.6 Development Update (three months reminder)

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 29/04/2015 18:39, Jim Fehlig ha scritto:
> Fabio Fantoni wrote:
> > Il 29/04/2015 02:21, Andrew Cooper ha scritto:
> > > On 28/04/15 23:17, Jim Fehlig wrote:
> > > > Jim Fehlig wrote:
> > > > > wei.liu2@xxxxxxxxxx wrote:
> > > > > > Hi all
> > > > > >
> > > > > > We are now three months into 4.6 development window. This is an
> > > > > > email to keep
> > > > > > track of all the patch series I gathered. It is by no means
> > > > > > complete and / or
> > > > > > acurate. Feel free to reply this email with new projects or
> > > > > > correct my
> > > > > > misunderstanding.
> > > > > [...]
> > > > > > *  libxl: add qxl vga interface support for upstream qemu (fair)
> > > > > >     -  Fabio Fantoni
> > > > > I've been working on SPICE support in the libvirt libxl driver and
> > > > > quickly came across the lack of support for qxl device.  What is the
> > > > > status of this work?  AFAICT, there was a v16 posted nearly a year ago
> > > > > with no comments
> > > > >
> > > > > http://lists.xen.org/archives/html/xen-devel/2014-05/msg03214.html
> > > > After playing with this more, I think the patch will need a
> > > > LIBXL_HAVE_QXL or similar in libxl.h.
> > > >
> > > > > I noticed this work was committed in the 4.3 dev cycle, but was
> > > > > reverted
> > > > > before the release by commit 5479961a, which describes problems with
> > > > > "instructions that cannot be used for MMIO".  Has any progress been
> > > > > made
> > > > > on that front?  Is Fabio's patch the only piece missing to support qxl
> > > > > devices?
> > > > I've tried Fabio's patch on top of fairly recent xen-unstable and don't
> > > > see the issues mentioned in the commit message of 5479961a. Note that I
> > > > only tried linux HVM guests though.
> > qxl vga is working good on windows domUs except problem after
> > save/restore
> > on linux domUs instead I wasn't able to get it working
> > today I tried with fedora 22 (beta3) lxde live dvd (have included
> > latest qxl drivers available): with both stdvga and qxl mouse is
> > working but not visible and I not understand why, I'll try also
> > lubuntu 15.04.
> > can you tell me what dom0 and domU have you use for test please?
> dom0 and domU are both SLES12.  Xen is fairly recent xen-unstable plus a
> few libxl patches.
>
> Regards,
> Jim
But the domU was without qxl driver installed?
With driver installed should always fails with error similar a what I 
reported FWIK. I mean this: 
http://lists.xen.org/archives/html/xen-devel/2015-04/txtGtntonxpzb.txt 
http://lists.xen.org/archives/html/xen-devel/2015-04/msg03064.html
Or you have domU with qxl driver installed, used and working? In this 
case we must find solution or workaround present in SLES12 and apply it 
also upstream if missed.
Thanks for any reply and sorry for my bad english.

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