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

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

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?



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