Failed attempt to boot a (non-debug) head -r339076 on an old PowerMac G5 "Quad Core" (built via devel/powerpc64-gcc): Waking up CPU 1

[Mark Millard]

[The stable/head mix seems to be a wrong idea: 11.2 gets past
the SMP: messages just fine on the so-called G5 "Quad Core".]

On 2018-Oct-8, at 5:14 PM, Mark Millard <marklmi at yahoo.com> wrote:

> On 2018-Oct-8, at 1:27 PM, Justin Hibbits <chmeeedalf at gmail.com> wrote:
> 
>> On Mon, 8 Oct 2018 15:37:43 -0400
>> Dennis Clarke <dclarke blastwave.org> wrote:
>> 
>>> On 10/08/2018 03:04 PM, Mark Millard via freebsd-ppc wrote:
>>>> On 2018-Oct-8, at 10:25 AM, Michael Tuexen <tuexen at
>>>> fh-muenster.de> wrote: 
>>>>>> On 8. Oct 2018, at 19:00, Mark Millard <marklmi at yahoo.com>
>>>>>> wrote:
>>>>>> 
>>>>>> [kern.smp.disabled=1 is confirmed to enable booting
>>>>>> my head -r339076 build on teh "Quad Core", much like
>>>>>> the 11.2 reports for "2MHz dual-core".]  
>>>>> Does 11.2 run with smp enabled?  
>>>> 
>>>> [My wording was poor: "reports" in "11.2 reports with
>>>> smp enabled" was referring to reports by you and others
>>>> on the lists, not screen messages from attempting a
>>>> 11.2 boot.]
>>>> 
>>>> No clue at this point for the G5 "Quad Core". I have no
>>>> 11.x context established, and have not since head
>>>> went from 11 to 12, as I remember. Would trying to boot
>>>> an installer/live for 11.2 be sufficient to test
>>>> this?  
>>> 
>>> 
>>> I have tried over and over to install 11.2 on a G5 with dual PPC970
>>> sockets wherein both are dual core. There is no quad core. Never was.
>>> Anyways, the install simply doesn't work.
>>> 
>>> Dennis
>> 
>> It would be helpful to know the last known-good SVN revision, both for
>> Head and 11.x, as well as the oldest failing one.  Since my G5 bit the
>> dust, I can't check locally.
> 
> Admittedly, it is a mix of 11 and 12 but bounds might be:
> 
> Earliest known failing (so far):
> 11.2 Release is -r335563 (by which point 11 possibly picked up
> something bad from head)
> 
> Latest known working (so far):
> head -r333594 (too soon for 11 to have picked up something from
> head)
> 
> From https://artifact.ci.freebsd.org/snapshot/stable-11/r*/powerpc/powerpc64/kernel.txz
> (presuming holding a base.txz constant and just swapping kernels)
> In that range for stable-11 I see matches for * of just:
> 
> 334634
> 334654
> 334698
> 334956
> 335204
> 335406
> 335436
> 335472
> 335488
> 335492
> 335496
> 335508
> 335514
> 335556
> 
> So about 14 versions of 11's kernel seem to be available
> in a pre-built form for powerpc64 under the assumption of
> "common problem, moved from head to 11".
> 
> Of course 11.2's release -r335563 could be included. There
> do not seem to be earlier powerpc64 snapshots anywhere near
> -r333594's time frame.
> 
> That could possibly be used to narrow the range more for 11
> without doing builds.

To start on this I took enough from:

http://ftp1.freebsd.org/pub/FreeBSD/snapshots/powerpc/powerpc64/11.2-STABLE/

to see if it would get past the SMP: messages that head is not
reaching. It produced the SMP messages just fine and kept going
past that point.

So I tried:

http://ftp1.freebsd.org/pub/FreeBSD/releases/powerpc/11.2-RELEASE/

and it did the same. 11.2-Release does not fail during the same
activity as head (if it fails at all).

So I'm not exploring the artifact.ci.freebsd.org stable-11 material
that I listed.

I may explore head via:

https://artifact.ci.freebsd.org/snapshot/head/r*/powerpc/powerpc64/kernel.txz

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