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

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:





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:






The previous update can be found here:




Appreciate your comments!



Best regards.


Tel: +86-21-6116 7988

MP: +86-134-8204-6855

Mail: libo.zhu@xxxxxxxxx


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