[Bug 280817] With DMAR enabled, my laptop panics

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, by system panics"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 15 Aug 2024 15:30:14 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280817

--- Comment #7 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Nuno Teixeira from comment #6)
I do not understand what do you want to say there.
Is your machine bootable after the update, or not?

Regardless, what is the device at pci0:30:7? Use pciconf -lv to identify it.
The culprit is that the device is issuing compat mode MSI(-X) interrupts
message, which are aborted by DMAR and reported as fault.  This is expected
and really is the DMAR purpose.  The only question is why the device does
that.

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