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Re: [Xen-devel] [Intel-gfx] [Announcement] 2015-Q1 release of XenGT - a Mediated Graphics Passthrough Solution from Intel

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

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