[Xen-users] Xen 4.8.0 | VGA Passthrough | Xen PV Drivers 8.2 | Windows 10 Pro 64 Bits

[David TECHER <davidtecher@xxxxxxxx>]

Hi,

Here is a video for Xen 4.8.0.

https://youtu.be/qgmqPfsPIOM

Info for domU shown in the video above

============================

Xen = 4.8.0

OS = Windows 10 Pro 64 Bits

CPU = i5 2400

GPU = HD 7970 (VGA Passthrough)

About the patch

============

Attached is a partial patch for both AMD cards (only the old generation HD6XXX and HD7XXX) and for anyone who owns a GTX 680 hardcoded to GRID K2.

This patch aims at

- reverting this old commit http://xenbits.xen.org/gitweb/?p=qemu-xen-traditional.git;a=patch;h=2736dd507ab8dee5abb8f046a36420c8c12638bf

- allocating more than 3GB of RAM for your domU

I have to revert modifications from the below commit manually so I can test both my HD7970 and my GTX 680 harcoded to GRID K2. And to neuter some MSI calls in passthrough.c

I am not a developer but a Wine hacker on Linux :D. Without this patch my GTX 680 will get a blue screen :(. But it helps for HD 7970 too :D

Xen PV Drivers 8.2 and Windows Activation

==============================

Test were done with Xen PV Drivers 8.2  https://www.xenproject.org/downloads/windows-pv-drivers/winpv-drivers-81/winpv-drivers-820.html

All drivers were installed and works pretty fine (no yellow mark as show in the video link above)

For unknown reason even if the stable drivers are truely signed (no need to use bcedit /set testsigning off/on), my activation was dropped after drivers installation.

bcedit command is only required when you try/build drivers from the development repository.

I sent a mail to mailing list of team responsible for those drivers. This is not their fault but really a problem with Window 10 itself

The only nice solution is to use the online phone assistance from Windows.

Since I dind't want to spend more time on fixing this issue I called Microsoft Support Online directly to activate my Win 10 Pro. This is an option when you got this issue. 

This is a option that you can use through "Parameters" on Win 10 Pro (but  I didn't remember where I clicked to get in Parameters options).

I called the number for my own country (France)

I tried to bypass all automatic digits suggested by the automatic voice

I waited for getting someone on the call = 1 human (less than 1 minute)

He asked me to go on http://support.microsoft.com/help
I accepted the  contrat

He got the 6 digits. I had to install the applet to access my PC remotely

I was OK that he could  access my PC remotely. He added the ID activation for my PC remotely.

PC was rebooted and it was OK :D

Well here I shared all informations I was able to collect for the 2 past weeks.

Hope it can help someone :D

Regards.

David

Attachment: xen-4.8.0_vgapassthrough_memory.patch
Description: Text Data

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