Re: [Xen-devel] [Intel-gfx] [Announcement] 2014-Q3 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> Sent: Thursday, December 04, 2014 6:20 PM
> 
> Il 04/12/2014 03:45, Jike Song ha scritto:
> > Hi all,
> >
> > We're pleased to announce a public release to Intel Graphics
> > Virtualization Technology (Intel GVT-g, formerly known as XenGT).
> > Intel GVT-g is a complete vGPU solution with mediated pass-through,
> > supported today on 4th generation Intel Core(TM) processors with Intel
> > Graphics processors. A virtual GPU instance is maintained for each VM,
> > with part of performance critical resources directly assigned. The
> > capability of running native graphics driver inside a VM, without
> > hypervisor intervention in performance critical paths, achieves a good
> > balance among performance, feature, and sharing capability. Though we
> > only support Xen on Intel Processor Graphics so far, the core logic
> > can be easily ported to other hypervisors.
> >
> >
> > The news of this update:
> >
> >
> >     - kernel update from 3.11.6 to 3.14.1
> >
> >     - We plan to integrate Intel GVT-g as a feature in i915 driver.
> > That effort is still under review, not included in this update yet
> >
> >     - Next update will be around early Jan, 2015
> >
> >
> > This update consists of:
> >
> >     - Windows HVM support with driver version 15.33.3910
> >
> >     - Stability fixes, e.g. stabilize GPU, the GPU hang occurrence
> > rate becomes rare now
> >
> >     - Hardware Media Acceleration for Decoding/Encoding/Transcoding,
> > VC1, H264 etc. format supporting
> >
> >     - Display enhancements, e.g. DP type is supported for virtual PORT
> >
> >     - Display port capability virtualization: with this feature, dom0
> > manager could freely assign virtual DDI ports to VM, not necessary to
> > check whether the corresponding physical DDI ports are available
> >
> >
> >
> > Please refer to the new setup guide, which provides step-to-step
> > details about building/configuring/running Intel GVT-g:
> >
> >
> >
> https://github.com/01org/XenGT-Preview-kernel/blob/master/XenGT_Setup_G
> uide.pdf
> >
> >
> >
> >
> > The new source codes are available at the updated github repos:
> >
> >
> >     Linux: https://github.com/01org/XenGT-Preview-kernel.git
> >
> >     Xen: https://github.com/01org/XenGT-Preview-xen.git
> >
> >     Qemu: https://github.com/01org/XenGT-Preview-qemu.git
> >
> >
> > More information about Intel GVT-g background, architecture, etc can
> > be found at:
> >
> >
> >
> https://www.usenix.org/conference/atc14/technical-sessions/presentation/tia
> n
> >
> >
> >
> http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Sum
> mit-v7_0.pdf
> >
> >
> >     https://01.org/xen/blogs/srclarkx/2013/graphics-virtualization-xengt
> >
> >
> > The previous update can be found here:
> >
> >
> >     http://lists.xen.org/archives/html/xen-devel/2014-07/msg03248.html
> >
> >
> > Appreciate your comments!
> 
> Thanks for this very good project.
> I did a fast look to xen patch about it, I have some small advices:
> change to tools/examples/xmexample.hvm should be to
> tools/examples/xlexample.hvm instead since is implemented in xl and not xm.
> I think is good rebase the patch to latest xen-unstable git that have
> many changes, for better reviews and for propose it upstream for xen 4.6
> if will be good.
> 
> Thanks for any reply and sorry for my bad english.
> 

Thanks for suggestion. We're now pushing our Xen hypervisor change,
which is much simplified than the code carried in this code drop. That's
why we didn't upgrade to latest xen-unstable, until we have necessary
changes accepted. At that time, lots of code will be removed and 
starting from then we'll follow xen-unstable more closely.

Thanks,
Kevin

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