[Bug 250802] bhyve exited with status 134 when GPU PCI passthrough

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250802

--- Comment #49 from Konstantin Belousov <kib at FreeBSD.org> ---
(In reply to Peter Grehan from comment #48)
I remember that starting with SandyBridge, Intel GPUs have a window in their
membar that translates accesses to mchbar.  Quick look at the docs suggests
that Skylake still does this.

So do you think that 1:1 gpa:hpa mapping for pass-through would be helpful ?
Do you remember a title of the talk, or have an url ?

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