Instability likely related to new pmap on Cubieboard A10

[Jakob Alvermark]

On Fri, October 16, 2015 22:35, Svatopluk Kraus wrote:
> Hi,
>
>
> could you please test the following patch:
> https://github.com/strejda/freebsd/commit/618092e6a6cc2f568979ed6f5cf1c11
> 30182b068.diff

Sorry for being quiet (until now).
I had the same problem on my Allwinner A13, random core dumps, I was not
able to finish the boot.
I tried this patch and it is working again!
It now boots completely into userland.

Thank you,
Jakob

>
> On Tue, Sep 1, 2015 at 3:01 PM, Dmitry Marakasov <amdmi3 at amdmi3.ru>
> wrote:
>
>> * Svatopluk Kraus (onwahe at gmail.com) wrote:
>>
>>
>>>>> Thanks. Meantime, I tried most recent HEAD on pandaboard and
>>>>> beaglebone black and no problem there. Do you have enabled
>>>>> INVARIANTS
>>>>> and INVARIANT_SUPPORT in your config?
>>>>
>>>> I've enabled them at some point - at least last two runs had these
>>>> enabled. Any other way I could help? Maybe I should check if it was
>>>> new pmap commit which caused this, and if not, bisect it?
>>>>
>>>
>>> Can you try attached semi-debug patch, please? I want to be sure that
>>>  problem is not on patched place.
>>
>> Sorry for delay, I was short on time last week, and then I was busy
>> with setting up tftp/nfs netboot for my cubieboard. Now it finally works
>>  and I'd say it's pretty cool when I can test another build without
>> plugging sd card around. Unfortunately, with this setup panic doesn't
>> reproduce: there are just around 10 sh(1) segfaults during init, and
>> then it boots into somehow usable state. Only once I've had panic with
>> your latest patch applied:
>>
>> https://people.freebsd.org/~amdmi3/pmap4.log
>>
>>
>> With my new netboot, I plan to try to bisect it; for panic debugging I
>> guess I'll have to get back to plugging SD around. If you want me to do
>> more panic tests, could we please revisit which patches should be
>> applied cause I'm kinda lost in them.
>>
>> --
>> Dmitry Marakasov   .   55B5 0596 FF1E 8D84 5F56  9510 D35A 80DD F9D2
>> F77D
>> amdmi3 at amdmi3.ru  ..:  jabber: amdmi3 at jabber.ru      http://amdmi3.ru
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