Re: [Xen-devel] Xen 4.3 release planning proposal

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Dec 17, 2012 at 09:57:59PM -0200, Martinx - ?$B%8%'!<%`%: wrote:
>    Hi Pasi!
>     Can you tell me if it will be possible to use Xen like this:
>     dom0 -> ATI GPU Passthrough as primary -> HVM domU with Catalyst -> Spice
>    -> Spice-Client ?
>     I do not want to use Spice "alone" and, I do not want to use my domU with
>    my ATI without SPICE...  That makes sense?
>    Thanks!

Afaik SPICE uses and requires the virtual QXL GPU for efficient operation, 
so it doesn't work with physical GPUs.

-- Pasi

>    Thiago
> 
>    On 20 August 2012 16:14, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
> 
>      On Mon, Aug 20, 2012 at 05:46:59PM +0100, George Dunlap wrote:
>      >
>      > Features and improvements not on this list are of course welcome at
>      > any time before the feature freeze.
>      >
>      > Any questions and feedback are welcome!
>      >
>      > Your 4.3 release coordinator,
>      >  George Dunlap
>      >
> 
>      <snip>
>      >
>      > * xl USB pass-through for PV guests
>      >   owner: ?
>      >   Port the xend PV pass-through functionality to xl.
>      >
> 
>      xm/xend PVUSB works for both PV and HVM guests, so xl should support
>      PVUSB for both PV and HVM guests aswell.
>      James Harper's GPLPV drivers actually do have PVUSB frontend driver for
>      Windows.
> 
>      Also Suse's xenlinux forward-ported patches have PVUSB support in
>      unmodified_drivers for HVM guests.
> 
>      Another USB item:
> 
>      * xl support for USB device passthru using QEMU emulated USB for HVM
>      guests (no need for PVUSB drivers in the HVM guest).
>        This works today in xm/xend with qemu-traditional, but is limited to
>      USB 1.1, probably because
>        the old version of Qemu-dm-traditional which lacks USB 2.0/3.0.
>        So xl support for emulated USB device passthru for both qemu-upstream
>      and qemu-traditional.
> 
>      More wishlist items:
> 
>      * Nested hardware virtualization. Important for easier testing and
>      development of Xen (Xen-on-Xen),
>        and for running other hypervisors in Xen VMs. Interesting for labs,
>      POCs, etc.
> 
>      * VGA/GPU passthru support for AMD/NVIDIA; lots of patches on xen-devel
>      archives,
>        but noone has yet stepped up to clean up and get them merged.
>        Currently Intel gfx passthru patches are merged to Xen, but primary
>      ATI/NVIDIA require extra patches.
>        This is actually something that a LOT of users ask often, it's
>      discussed almost every day on ##xen on IRC.
>        I wonder if XenClient folks could help here?
> 
>      * Dom0 Keyboard/mouse sharing to HVM guests; mainly needed by VGA/GPU
>      passthru users.
>        Fujitsu guys posted some patches for this in 2010, and XenClient guys
>      in 2009 (iirc),
>        but nothing got further developed and merged to upstream Xen.
> 
>      * QXL virtual GPU support for SPICE. Someone was already developing
>      this,
>        and posted patches earlier during 4.2 development cycle to xen-devel.
>        Upstream Qemu includes QXL support.
> 
>      * PVSCSI support in XL. James Harper was (semi) interested in working
>      with this,
>        because he has a PVSCSI frontend driver in Windows GPLPV drivers, and
>      he's using PVSCSI for tape backups himself.
> 
>      * libvirt libxl driver improvements; support more Xen features.
>        Allows better using the Ubuntu/Debian/Fedora/RHEL/CentOS "default"
>      virtualization GUI also with Xen.
> 
>      Hopefully we'll find interested developers for these items :)
> 
>      -- Pasi
> 
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> 
> References
> 
>    Visible links
>    1. mailto:pasik@xxxxxx
>    2. mailto:Xen-devel@xxxxxxxxxxxxx
>    3. http://lists.xen.org/xen-devel

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