I just came across this diff. Apparently no activity since November 2024 - is this still relevant?

Looks good to me. Lets quickly discuss the commit message on IRC before you push.

The commit footer field should be Approved by, not Approved-by. See https://docs.freebsd.org/en/articles/committers-guide/#_include_appropriate_metadata_in_a_footer

Commit message: An upper-case letter should follow after the category colon. See examples in section 9 of the committer's guide.

Looks good to me.
Don't forget to add the Differential Revision: field with the full URL before pushing the commit.

Hmm... I believe the edge entries of jpaetzel are in the wrong place (not your fault).
The newly added entry should go between jadawin and joerg.

Don't forget to add the Differential Revision: field to the commit message before pushing.

Address various issues mentioned by diizzy@

Address issued mentioned by fuz@

In D52968#1234451, @markj wrote:

I see, I missed a chunk of the patch. I uploaded a new version, could you please retest?

In D52968#1234439, @markj wrote:

Could you please show the output of procstat -kk $(pgrep bhyve) while the hang is happening?

In D52968#1229309, @markj wrote:

Apologies for the delay, here's a backport to stable/14: https://people.freebsd.org/~markj/patches/0001-vmm-Fix-a-deadlock-between-vm_smp_rendezvous-and-vcp.patch

Please give it a try and let me know whether it helps (or even makes things worse).

In D52968#1225880, @markj wrote:

Well, that commit is a random whitespace change... and the fix for the deadlock is not in stable/14 at all. I will try to backport it if you can test the resulting patch.

In D52968#1225867, @markj wrote:

Then you don't have the patch at all?

In D52968#1225836, @markj wrote:

What are you testing exactly? The commit that went into the src tree, or a hand-applied patch from this revision?

Can you guys confirm that 300a8977bcfd2f43bc6df81d9bdad6b79a740729 fixes the Windows 11 passthru boot-stuck issue?
D52781 was actually working for me. However, this patch (D52968) results in the same symptoms for me: Windows 11 gets stuck during boot when attempting to passthru a PCIe device.