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Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

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From Jike Song <jike.song@intel.com>
Newsgroups linux.kernel
Subject Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel
Date Fri, 20 Nov 2015 03:50:01 +0100
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X-Original-Cc Gerd Hoffmann <kraxel@redhat.com>, "Tian, Kevin" <kevin.tian@intel.com>, Alex Williamson <alex.williamson@redhat.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, "igvt-g@ml01.01.org" <igvt-g@ml01.01.org>, "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "White, Michael L" <michael.l.white@intel.com>, "Dong, Eddie" <eddie.dong@intel.com>, "Li, Susie" <susie.li@intel.com>, "Cowperthwaite, David J" <david.j.cowperthwaite@intel.com>, "Reddy, Raghuveer" <raghuveer.reddy@intel.com>, "Zhu, Libo" <libo.zhu@intel.com>, "Zhou, Chao" <chao.zhou@intel.com>, "Wang, Hongbo" <hongbo.wang@intel.com>, "Lv, Zhiyuan" <zhiyuan.lv@intel.com>, qemu-devel <qemu-devel@nongnu.org>
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On 11/19/2015 07:09 PM, Paolo Bonzini wrote:
> On 19/11/2015 09:40, Gerd Hoffmann wrote:
>>>> But this code should be
>>>> minor to be maintained in libvirt.
>> As far I know libvirt only needs to discover those devices.  If they
>> look like sr/iov devices in sysfs this might work without any changes to
>> libvirt.
>
> I don't think they will look like SR/IOV devices.
>
> The interface may look a little like the sysfs interface that GVT-g is
> already using.  However, it should at least be extended to support
> multiple vGPUs in a single VM.  This might not be possible for Intel
> integrated graphics, but it should definitely be possible for discrete
> graphics cards.

Didn't hear about multiple vGPUs for a single VM before. Yes If we
expect same vGPU interfaces for different vendors, abstraction and
vendor specific stuff should be implemented.


> Another nit is that the VM id should probably be replaced by a UUID
> (because it's too easy to stumble on an existing VM id), assuming a VM
> id is needed at all.

For the last assumption, yes, a VM id is not necessary for gvt-g, it's
only a temporary implementation.

As long as libvirt is used, UUID should be enough for gvt-g. However,
UUID is not mandatory? What should we do if user don't specify an UUID
in QEMU cmdline?

>
> Paolo
>

--
Thanks,
Jike
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Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-18 19:20 +0100
  RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-19 05:10 +0100
    Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-19 08:30 +0100
      Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2015-11-19 16:40 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-19 17:00 +0100
          Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-20 04:00 +0100
            Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-20 05:30 +0100
              Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-20 07:00 +0100
                RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-20 07:10 +0100
                Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-20 17:50 +0100
                Re: [Qemu-devel] [Intel-gfx] [Announcement] 2015-Q3 release of XenGT  - a Mediated Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-23 06:00 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Paolo Bonzini <pbonzini@redhat.com> - 2015-11-19 17:00 +0100
          Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2015-11-19 17:20 +0100
    Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Gerd Hoffmann <kraxel@redhat.com> - 2015-11-19 09:50 +0100
      Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Paolo Bonzini <pbonzini@redhat.com> - 2015-11-19 12:10 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-20 03:50 +0100
      RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-20 07:20 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Gerd Hoffmann <kraxel@redhat.com> - 2015-11-20 09:30 +0100
          RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-20 09:40 +0100
            Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Zhiyuan Lv <zhiyuan.lv@intel.com> - 2015-11-20 10:00 +0100
    Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-19 21:10 +0100
      RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-20 08:20 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-20 18:10 +0100
      RE: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel "Tian, Kevin" <kevin.tian@intel.com> - 2015-11-20 09:20 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Alex Williamson <alex.williamson@redhat.com> - 2015-11-20 18:30 +0100
          Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Jike Song <jike.song@intel.com> - 2015-11-23 06:10 +0100
      Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Daniel Vetter <daniel@ffwll.ch> - 2015-11-24 12:20 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Chris Wilson <chris@chris-wilson.co.uk> - 2015-11-24 13:00 +0100
        Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Gerd Hoffmann <kraxel@redhat.com> - 2015-11-24 13:40 +0100
          Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Daniel Vetter <daniel@ffwll.ch> - 2015-11-24 14:40 +0100
            Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a  Mediated Graphics Passthrough Solution from Intel Gerd Hoffmann <kraxel@redhat.com> - 2015-11-24 15:20 +0100
              Re: [Intel-gfx] [Announcement] 2015-Q3 release of XenGT - a Mediated  Graphics Passthrough Solution from Intel Daniel Vetter <daniel@ffwll.ch> - 2015-11-24 15:20 +0100

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