Re: head -r365932 on PowerMac G5 (2 dual-core sockets): Crashes before login prompt if powerd is enabled in /etc/rc.conf

On 2020-Sep-23, at 14:07, Mark Millard <marklmi at yahoo.com> wrote:

>> . . .
>>> 
>>>> When was the last time you reinstalled boot1.hfs?
>>> 
>>> It been a while but this setup was working before the
>>> update to head -r365932 . When was the last time
>>> boot1.hfs had a required change? Recently?
>> 
>> May 1. I fixed a load address problem.
> 
> . . .
>> Actually, now that I think about it, I think that that's actually what you're tripping over here. It seems like identical symptoms.
> 
> Okay.
> 
>> See https://reviews.freebsd.org/rS360537
>> 
>> This was previously only working by accident.
> 

In my enviroment, doing:

gpart bootcode -p /boot/boot1.hfs -i1 ada1

from a modern, booting context got the failing
SSD to boot single-socket, single-core PowerMacs.

Thanks!

It changed the behavior of 2-socket G4 as well but
that context now reports starting only one of the 2
CPUs and things do not go well from there. For
example, USB2 fails and it basically hangs up before
the login prompt (but it does check the root file
system). It even reported something about NUMA
domain 0 in the messages that I saw go by.

Before, 2-socket died much earlier. But it is not
getting to a status where I have any control/access.

Of course, so far as I know, nothing has fixed the
"kernel sometimes zeros user space pages that it
should not" problem (even when sitting idle). So,
ultimately, 32-bit powerpc FreeBSD is not sufficiently
useful on any of the machines, other than via chroot
on a powerpc64 FreeBSD machine.

Anyway, I've a bunch of SSDs to update so the basic
problem does not reappear if I grab another one.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)

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