Instability likely related to new pmap on Cubieboard A10

[Svatopluk Kraus]

The patch was comitted in r289602.
Thank you Ian.

On Mon, Oct 19, 2015 at 7:09 PM, Jakob Alvermark <jakob at alvermark.net> wrote:
> 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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>
>