[Bug 280286] Win10 guest VM with GVT-d has Intel 630 UHD (and COM port) driver errors in FreeBSD 14.1

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 06 Jan 2026 14:54:34 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280286

redmog <freebsd@talk2dom.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Closed
         Resolution|---                         |FIXED

--- Comment #7 from redmog <freebsd@talk2dom.com> ---
Resolution detailed here:

https://forums.freebsd.org/threads/experience-from-bhyve-freebsd-14-1-gpu-passthrough-with-windows-10-guest.94118/#post-691328

COM ports: resolved by modifying bhyve to only present 2 COM ports instead of
default 4.

Intel UHD 630 iGPU: resolved by modifying edk2-bhyve/OVMF to pick up and use
OpRegion and StolenMemory area from E820 table via QEMU-config (already
generated by bhyve)

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