We are pleased to announce an update of Intel GVT-g for Xen.
Intel GVT-g is a full GPU virtualization solution with mediated pass-through, starting
from 4th generation Intel Core(TM) processors with Intel processor graphics. 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. GVT-g for Xen hypervisor is XenGT.
- Kernel: https://github.com/01org/gvt-linux
- Qemu: https://github.com/01org/igvtg-qemu
- Xen : https://github.com/01org/igvtg-xen
- Server platforms: Intel(r) Xeon(r) E3_v4, E3_v5 and E3_v6 with Intel Graphics
- Client platforms: Intel(r) Core(tm) 5th generation (code name: Broadwell), 6th
generation (code name: Skylake) and 7th generation (code name: Kabylake)
Guest Operation System Validated
- Windows7 32-bit, Window7 64-bit, Windows8.1 64-bit, Windows10 64-bit
- Ubuntu 18.04 64-bit
Major Changes since Q1'2018 Release
- This update is based on kernel version 4.17 and Qemu version 2.12.
- More bug fixing and code refinement, please refer to git log.
Limitation or known issues:
- Windows gfx driver 18.104.22.16826 is preferred for Windows 10 VM.
- Due to graphics hardware resource limitation, the maximum number of Windows VM is 7.
- The pre-defined type vgt_low_gm_sz=128/256/512 of option into HVM file must be
created for VM to install Windows 7 32-bit. vGPU type 8 is not allocated to have enough
graphics resource to support Windows 7 32-bit.
- If the default 1024x768 vm screen resolution couldn't satisfy your need, please
add vgt_log_gm_sz=128/256/512 option into HVM file.
- There's corner case that Guest Windows 7 32bit VM may be killed automatically by
Xen when Guest VM runs into TDR. This issues happens only on Broadwell platform. The
workaround is to disable part of viridian feature in Guest VM hvm file by adding
- Setup guide:
- New upstream architecture design introduction:
- Please subscribe to join the mailing list if you want to learn more about GVT-g
- Please subscribe to join the mailing list if you want to contribute/review latest
GVT-g upstream patches:
- Official GVT-g portal:
- More information about background, architecture and others about Intel GVT-g, can be
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.
Tel: +86-21-6116 5390
MP: +86-1356 4367 024
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