Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q2 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

[Jike Song <jike.song@xxxxxxxxx>]

Hi all,

We're pleased to announce a public update to Intel Graphics Virtualization 
Technology(Intel GVT-g, formerly known as XenGT).

Intel GVT-g is a full GPU virtualization solution with mediated pass-through, 
starting from 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. Xen is currently supported on Intel Processor Graphics 
(a.k.a. XenGT); and the core logic can be easily ported to other hypervisors, 
for example, the experimental code has been released to support GVT-g running 
on a KVM hypervisor (a.k.a KVMGT).

Tip of repositories
-------------------------

    Kernel: 5b73653d5ca, Branch: master-2015Q2-3.18.0
    Qemu: 2a75bbff62c1, Branch: master
    Xen: 38c36f0f511b1, Branch: master-2015Q2-4.5

This update consists of:
    - Change time based scheduler timer to be configurable to enhance stability
    - Fix stability issues that VM/Dom0 got tdr when hang up at some specific 
instruction on BDW
    - Optimize the emulation of el_status register to enhance stability
    - 2D/3D performance in linux VMs has been improved about 50% on BDW
    - Fix abnormal idle power consumption issue due to wrong forcewake policy
    - Fix tdr issue when running 2D/3D/Media workloads in Windows VMs 
simultaneously
    - KVM support is still in a separate branch as prototype work. We plan to 
integrate KVM/Xen support together in the future releases
    - Next update will be around early Oct, 2015

Notice that this release can support both Intel 4th generation Core CPU(code 
name: Haswell) and Intel 5th generation Core CPU (code name: Broadwell), while 
the limitation of the latter include:
    * 3D conformance may have some failure
    * Under high demand 3D workloads, stability issues are detected
    * Multi-monitor scenario is not fully tested, while single monitor of 
VGA/HDMI/DP/eDP should just work
    * Hotplug DP may cause black screen even on native environment

Where to get

kernel: 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


We have a mailing list for GVT-g development, bug report and technical 
discussion:

    https://lists.01.org/mailman/listinfo/igvt-g

More information about Intel GVT-g background, architecture, etc can be found 
at:

    https://www.usenix.org/conference/atc14/technical-sessions/presentation/tian
    
http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Summit-v7_0.pdf
    https://01.org/xen/blogs/srclarkx/2013/graphics-virtualization-xengt


Note: The XenGT project should be considered a work in progress. As such it is 
not a complete product nor should it be considered one. Extra care should be 
taken when testing and configuring a system to use the XenGT project.


--
Thanks,
Jike

On 04/10/2015 09:23 PM, Jike Song wrote:
> Hi all,
>
> We're pleased to announce a public update 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.
>
> Tip of repositories
> -------------------------
>
>            Kernel: a011c9f953e, Branch: master-2015Q1-3.18.0
>            Qemu: 2a75bbff62c1, Branch: master
>            Xen: 38c36f0f511b1, Branch: master-2015Q1-4.5
>
> Summary this update
> -------------------------
>         - Preliminary Broadwell support.
>         - kernel update from drm-intel 3.17.0 to drm-intel 3.18.0(tag: 
> drm-intel-next-fixes-2014-12-17, notice that i915 driver code is much newer 
> than kernel stable version).
>         - Next update will be around early July, 2015.
>         - KVM support is still in a separate branch as prototype work. We plan 
> to integrate KVM/Xen support together in future releases.
>
> This update consists of:
>         - gvt-g core logic code was moved into i915 driver directory.
>         - Host mediation is used for dom0 i915 driver access, instead of 
> de-privileged dom0.
>         - The Xen-specific code was separated from vgt core logic into a new file 
> "driver/xen/xengt.c".
>         - Broadwell is preliminarily supported in this release. Users could 
> start multiple linux/windows 64-bit virtual machines simultaneously, and 
> perform display switch among them.
>
> Notice that it is still preliminary release for BDW, which is not yet in the 
> same level of HSW release. Differences include:
>                   * Power/performance tuning on BDW is not yet done.
>          * Stability needs to be improved.
>                   * No 32-bit guest OS support.
>                   * Multi-monitor scenario is not fully tested, while single 
> monitor of VGA/HDMI/DP/eDP should just work.
>
>
> Where to get:
> -----------------
>                   kerenl: 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
>
> 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-2015Q1-3.18.0/XenGT_Setup_Guide_2015Q1.pdf
>
> More information about Intel GVT-g background, architecture, etc can be found 
> at:
>                   
> https://www.usenix.org/conference/atc14/technical-sessions/presentation/tian
>                   
> http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Summit-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/2014-12/msg00474.html
>
>
> Note
> ---------------
>         The XenGT project should be considered a work in progress, As such it 
> is not a complete product nor should it be considered one., Extra care should 
> be taken when testing and configuring a system to use the XenGT project.
>
>
> --
> Thanks,
> Jike
>
> On 01/09/2015 04:51 PM, Jike Song wrote:
> > Hi all,
> >
> >      We're pleased to announce a public update 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 XenGT project should be considered a work in 
> > progress, As such it is not a complete product nor should it be considered 
> > one., Extra care should be taken when testing and configuring a system to use 
> > the XenGT project.
> >
> > The news of this update:
> >
> >         - kernel update from 3.14.1 to drm-intel 3.17.0.
> >         - 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 Apr, 2015.
> >
> > This update consists of:
> >
> >         - Including some bug fixes and stability enhancement.
> >         - Making XenGT device model to be aware of Broadwell. In this version 
> > BDW is not yet functioning.
> >         - Available Fence registers number is changed to 32 from 16 to align 
> > with HSW hardware.
> >         - New cascade interrupt framework for supporting interrupt 
> > virtualization on both Haswell and Broadwell.
> >         - Add back the gem_vgtbuffer. The previous release did not build that 
> > module for 3.14 kernel. In this release, the module is back and rebased to 3.17.
> >         - Enable the irq based context switch in vgt driver, which will help 
> > reduce the cpu utilization while doing context switch, it is enabled by 
> > default, and can be turn off by kernel flag irq_based_ctx_switch.
> >
> >
> > 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_Guide.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/tian
> >         
> > http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Summit-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/2014-12/msg00474.html
> >
> >
> >
> > Appreciate your comments!
> >
> >
> >
> > --
> > Thanks,
> > Jike
> >
> >
> > On 12/04/2014 10:45 AM, Jike Song wrote:
> > > 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_Guide.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/tian
> > >
> > >         
> > > http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Summit-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,
> > > Jike
> > >
> > > On 07/25/2014 04:31 PM, Jike Song wrote:
> > > > Hi all,
> > > >
> > > > We're pleased to announce an update 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:
> > > >
> > > >         - Project code name is "XenGT", now official name is Intel Graphics 
> > > > Virtualization Technology (Intel GVT-g)
> > > >         - Currently Intel GVT-g supports Intel Processor Graphics built into 
> > > > 4th generation Intel Core processors - Haswell platform
> > > >         - Moving forward, XenGT will change to quarterly release cadence. Next 
> > > > update will be around early October, 2014.
> > > >
> > > > This update consists of:
> > > >
> > > >         - Stability fixes, e.g. stable DP support
> > > >         - Display enhancements, e.g. virtual monitor support. Users can define 
> > > > a virtual monitor type with customized EDID for virtual machines, not 
> > > > necessarily the same as physical monitors.
> > > >         - Improved support for GPU recovery
> > > >         - Experimental Windows HVM support. To download the experimental 
> > > > version, see setup guide for details
> > > >         - Experimental Hardware Media Acceleration for decoding.
> > > >
> > > >
> > > > 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_Guide.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/tian
> > > >         
> > > > http://events.linuxfoundation.org/sites/events/files/slides/XenGT-Xen%20Summit-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/2014-02/msg01848.html
> > > >
> > > > Appreciate your comments!
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > Thanks,
> > > > Jike
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel