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Date:      Fri, 12 Apr 2019 17:20:30 -0400
From:      Dennis Clarke <dclarke@blastwave.org>
To:        Mark Millard <marklmi@yahoo.com>
Cc:        freebsd-ppc@freebsd.org
Subject:   Re: Patches to allow usefdt mode that works on a 2 socket PowerMac3,  6 example too --and makes more work on 2-socket/1-core-each PowerMac11, 2
Message-ID:  <5aecd21e-e53c-f14c-0bdc-8732fa88fed6@blastwave.org>
In-Reply-To: <465DBF40-EEF5-4D4A-95F6-DF17EB5B130B@yahoo.com>
References:  <988F644F-D5E7-4FB4-AAB3-A72E9DA88CE6@yahoo.com> <af38e008-d9f9-9364-56c5-56387cbcf95d@blastwave.org> <465DBF40-EEF5-4D4A-95F6-DF17EB5B130B@yahoo.com>

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On 4/12/19 4:51 PM, Mark Millard wrote:
> On 2019-Apr-12, at 13:13, Dennis Clarke <dclarke at blastwave.org> wrote:
> 
>> On 4/12/19 3:19 PM, Mark Millard via freebsd-ppc wrote:
.
.
.
>>
>> Would you be so kind as to paste all this into :
>>
>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233863
>>
>> Really I would like to run some tests and follow up in the bug reports.
> 
> Okay I'll paste them in as attachments. But be warned:

Fair warning received loud and clear :-)

> 
> The 2 files do not deal with threads being stuck sleeping
> (and, so, the fans going) or other such. The stuck-sleeping
> problem happens for both multi-socket G5's and multi-socket
> G4's. (I do not have access to single-socket multi-core
> powerpc64 or powerpc machines to test.)

I have multiple G5 type boxen and will try them out. At least try
to.

> 
> So do not expect too much from these patches: They address
> some necessary issues but are not sufficient for everything.
>

Of course. No problem.


> These patches for the openfirmware->fdt translation are
> closer to being reasonable for FreeBSD official use
> than my highly context-specific stuck-sleeping patches for
> usefdt mode.
> 

Well to be frank we know this is for mac g5 hardware and thus having
them working at all in any fashion is better than the current situation.
Apple made a ton of them and they are dirt cheap and available as
opposed to the IBM Power situation which is expensive and just in
datacenters.


-- 
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken
GreyBeard and suspenders optional




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