[Bug 239245] r350026 will panic on ppc64 PowerMac G5 in vm_phys_enqueue_contig

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239245

Mark Millard <marklmi26-fbsd at yahoo.com> changed:

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                 CC|                            |marklmi26-fbsd at yahoo.com

--- Comment #7 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
(In reply to Mark Johnston from comment #5)

I tried but failed to repeat the original problem first: it
booted just fine, making such output from my context probably
not all that useful. Details follow.

I grabbed materials from:

https://artifact.ci.freebsd.org/snapshot/head/r350055/powerpc/powerpc64/

and put themn on a SSD parition for a 16 GiByte PowerMac G5
quad. It was unchanged, not even editing of /etc/fstab :
just tar expansion of the .txz files after a newfs -U -t .
(So I had to enter ufs:/dev/ada0s3 when prompted.)

But it booted just fine. Interestingly, uname -apKU reports
itself as being r350056 (not r350055). The revision.txt
showed r350055. (So artifact's version indications can be
wrong?)

Possibilities for why it boots include:

A) The amount of RAM matters.
B) Some FreeBSD configuration that causes differing activity
   matters.
C) ?

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