[Bug 280952] DMAR (hw.dmar.enable=1) incompatible with bhyve passthrough

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 20 Aug 2024 18:54:12 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280952

            Bug ID: 280952
           Summary: DMAR (hw.dmar.enable=1) incompatible with bhyve
                    passthrough
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: emaste@freebsd.org

Split out from PR280817 as that one is specific to the crash that Warner
encountered.

From https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280817#c10
> You cannot combine DMAR and bhyve pass-through right now.

Draft patch is at https://reviews.freebsd.org/D25672

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