Merging 64 bit changes to -HEAD

[Luiz Otavio O Souza]

On Jun 29, 2010, at 8:02 AM, Jayachandran C. wrote:

> On Tue, Jun 29, 2010 at 2:28 AM, Luiz Otavio O Souza <lists.br at gmail.com> wrote:
>>> Thanks for the the update. Looks like pmap_map for kernel is failing,
>>> may be the new tlb_update code causes this.  Can you apply the
>>> attached patch and see if the problem still persists, it replaces the
>>> new tlb_update code with the older version.
>>> 
>>> Obviously not a fix, but if we can narrow it down to this function,
>>> fixing will be easier.
>>> 
>>> JC.
>>> <try.diff>
>> 
>> JC,
>> 
>> This fix the problem ! Thanks ! Now, at least, you know where to look :)
> 
> The new tlb_update does not seem to update the tlb entry if the tlbp
> fails.  Here's a patch that should make the new function behave like
> the older one.  The patch is in attached file 'tlb-update.diff'.
> 
> If that does not work, I'm not sure what the issue is.  You could also
> try try the nop-change.diff attached. It tries to switch the ssnop
> used for delay in the new code with 'nop' which was used by the old
> code.
> 
> Thanks,
> JC.
> <tlb-update.diff><nop-change.diff>

JC,

The nop-change seems to have no effect at all and with the tlb-update patch the kernel apparently crash at bzero(), here is the dmesg with TRAP_DEBUG enabled:

http://mips.pastebin.com/jydPvJ20

So hopefully you are on the right track and this may be something obvious to you.


Luiz