UEFITool VS gvt-linux

Open 1 E7250A24 -- 1 System BIOS with BIOS Guard vA.24.bin file with UEFITool

UEFIPatch from LongSoft's GitHub A UEFI patchtool built on the older UEFITool engine. UEFITool is not needed for this patch, only the UEFIPatch applcation.

Download UEFITool from https://github.com/LongSoft/UEFITool/releases for example UEFITool_NE_A66_win32.zip is hidden behind the show all assets button

There's a discussion here about this being done successfully on a ThinkPad T460 with a SPI programmer and UEFITool. The same method should apply to the T460p.

UEFITool: https://github.com/LongSoft/UEFITool/releases

If HPET is not an option in firmware, then it is disabled (0x00) and hidden from you. Which in practice is bad. The only option for users in this case is to download your firmware from the vendor, use this tool to locate the register and set the value with this tool to enabled (0x01).

UEFITool

How to view proprietary blobs on your system

I have been a long ThinkPad user and have bought an XPS 13 for the first time. I changed my boot logo on my machines before using this tool following this guide.

Yeah i read that too, I also found this.. https://github.com/intel/gvt-linux/issues/64

Intel has already confirmed that GVT-g is essentially dead and not supported on their Iris/Xe or anything newer graphics.. We can also confirm this via their own drivers source..

https://github.com/intel/gvt-linux/blob/gvt-staging/drivers/...

On Intel iGPUs, there are two methods: GVT-g and GVT-d. GVT-g is basically creating virtual instances of the iGPU for use in VMs, while GVT-d is passing through an entire iGPU to the guest in the same way you would do with a normal GPU.

From the Intel GVTg_Setup_Guide;

Not really pass through, no. If CONFIG_DRM_I915_GVT is enabled in your kernel, you can use Intel's graphics virtualization system... basically a virtio style virtual device that shares the GPU between VM and host. IMO this is way more convenient than real passthrough, where the device is only available either to the VM or the host. The downside is that you don't get full performance in the VM.

"Intel GVT-g is a full GPU virtualization solution with mediated pass-through (VFIO mediated device framework based), starting from 5th generation Intel Core(TM) processors with Intel Graphics processors. GVT-g supports both Xen and KVM (a.k.a XenGT & a.k.a KVMGT). 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."

https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide

Wait a minute. GVT-g with 11th gen iGPUs upwards does work in linux guest? Are you sure about that? See this github issue for reference.

To be clear, I never said it was dead, only a dead end.

As for GVT-g and Xe, according to a post in this[0] issue by one of the Intel devs, Rocket Lake (Xe) is not getting support and only does GVT-d.

Also in the same issue, someone pointed out that Intel themselves have states as much here[1].

I hope I am proven wrong in the end and GVT-g comes to then entire Xe and ARC lineup. Intel's communication on this matter has been...lacking.

0: https://github.com/intel/gvt-linux/issues/190

1: https://www.intel.com/content/www/us/en/support/articles/000...

After days of trial and error, I could not get it to work, maybe one of you knows it. Currently, I try to setup GVT-d with KVM on my Dell XPS 13 2 in 1 7390, which has a i7-1065G7. AFAIK GVT-g is not supported, so I gave GVT-d a chance. The virtual machine is booting without any errors, but the display stays black. I only found this guide, but couldn't get it to work...