[Bug 283189] Sporadic NVMe DMAR faults since updating to 14.2-STABLE

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=283189

--- Comment #3 from Warner Losh <imp@FreeBSD.org> ---
So dmar indicates this is a cancelled transaction we, presumably, need to redo.
Maybe we just need to be quiet about it...  newer pcie speeds do require this
sometimes, iirc, but I haven't drilled down to know if this is one of the
scenarios or not. Right now it looks like nmve driver is believing the do not
retry status it's getting back from the drive and not retrying.

Not sure what the root cause of the DMAR error is, or if we can retry the
transaction at that level or not. Kib@ will need to weigh in.

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