[Bug 280286] sysutils/edk2: g202308 Windows guest has driver errors in FreeBSD 14.1

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280286

            Bug ID: 280286
           Summary: sysutils/edk2: g202308 Windows guest has driver errors
                    in FreeBSD 14.1
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: uboot@FreeBSD.org
          Reporter: freebsd@talk2dom.com
          Assignee: uboot@FreeBSD.org
             Flags: maintainer-feedback?(uboot@FreeBSD.org)

Created attachment 252058
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=252058&action=edit
edk2-bhyve-g202308_5 debug log without fwcfg=qemu

Hi,

I'm trying to pass through the 630 UHD iGPU from my i7-9700T to a Windows 10
guest.

The device shows up in Windows but encounters error code 43.

In addition, there are 4 COM ports all with error code 12.
This might be happening to other users, see comment 20 on bug 274389:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274389#c20

Reverting back to g202202_10 solves the COM port errors, but not the iGPU
error.

More info on my investigation is available on the FreeBSD forum, starting here:

https://forums.freebsd.org/threads/experience-from-bhyve-freebsd-14-1-gpu-passthrough-with-windows-10-guest.94118/post-661914

Attaching debug logs from edk2-bhyve for various versions, with and without
"fwcfg=qemu" flag.

I'm willing to try patches, commands, etc. or provide more info if it helps.

Thanks

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