[Bug 288848] bhyve GPU passthru for NVIDIA not working

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288848

Corvin Köhne <corvink@FreeBSD.org> changed:

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                 CC|                            |corvink@FreeBSD.org

--- Comment #2 from Corvin Köhne <corvink@FreeBSD.org> ---
I've started investigating which bits of my patches are required for NVIDIA
GPUs. I've noticed that it's sufficient (for Linux guests, Windows untested) to
set a valid INTPIN value in the PCI config space. Unfortunately, I'm unfamiliar
with PCI legacy interrupts and bhyve doesn't support them for passthrough
devices. So, I don't know which side effects can occur due to this change.

I've created a review: https://reviews.freebsd.org/D51892

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