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Date:      Fri, 14 Dec 2018 17:30:18 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 221350] Unable to boot/install on HPE Proliant MicroServer Gen10 (AMD Opteron X3000): Hangs/Panics
Message-ID:  <bug-221350-227-BjmhVkdQnC@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-221350-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-221350-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221350

John Baldwin <jhb@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |imp@FreeBSD.org

--- Comment #54 from John Baldwin <jhb@FreeBSD.org> ---
I think the patch is probably fine.  This looks to be a BIOS bug.  The fail=
ing
memory BAR for the VGA device is '0xfeb00000' with a size of 256K.  However,
ACPI reserves the first page of that range as a system resource (from devin=
fo
-vr output without the patch):

nexus0
  ...
  acpi0
      ...
      I/O memory addresses:
          ...
          0xfeb00000-0xfeb00fff

FWIW, hw.pci.realloc_bars is a bit of a conservative knob that I had consid=
ered
enabling by default.  I've added Warner to see what he thinks about possibly
enabling this knob by default in HEAD.  The current patch is probably fine =
to
commit as-is and is probably safe to MFC as well since it is specific to th=
at
device id.

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