[Bug 290997] [vmm]: Dedicated GPU - PCI passthrough not supported yet? (Variable size IVHD type 0xf0 not supported)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290997

Jonathan Vasquez <jon@xyinn.org> changed:

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                 CC|                            |jon@xyinn.org

--- Comment #8 from Jonathan Vasquez <jon@xyinn.org> ---
For the record, I've been using GPU passthrough for a few months now and it's
been pretty solid over all. There are some qwirks but once it's running, it's
stable and I haven't had any crashes. My bhyve gaming VM just keeps running :).
I've documented this at the below link and have uploaded multiple videos on my
youtube channel showing the performance:

and Corvin is right regarding lack of resizable bar support. That was the main
culprit of what prevented my card from being used. Once I turned it off it
worked. Although I believe I'm bottlenecked atm due to it but I can still play
Cyberpunk 2077 at 40 fps with maximum settings (the card can handle more so
it's not a card limitation), and it goes up to 80 fps with frame generation
enabled.

Blog Post
- https://xyinn.org/blog/freebsd/freebsd_bhyve_gpu_passthrough_amd

GPU Passthrough On FreeBSD 14.3-RELEASE - Gaming in a Virtual Machine -
Overview Demo
- https://www.youtube.com/watch?v=Ob4-v7dTJGs

GPU Passthrough On FreeBSD 14.3-RELEASE - Gaming in a Virtual Machine -
Performance Demo
https://www.youtube.com/watch?v=_cz0RUAw5p8

Virtual Machine Gaming - Cyberpunk 2077 - #1
https://www.youtube.com/watch?v=pgbms-c-cGI

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