[Pdbg] [PATCH v2 00/39] gdbserver multi-threaded debugging and POWER9/10 support

[Nicholas Piggin]

Excerpts from Joel Stanley's message of May 3, 2022 5:47 pm:
> On Wed, 20 Apr 2022 at 06:50, Nicholas Piggin <npiggin at gmail.com> wrote:
>>
>> POWER10 is working well with sbefifo (modulo the start SBE command
>> being buggy with stop states -- make sure you use powersave=off when
>> testing this, until those can be fixed). POWER9 similarly works well,
>> with the exception of breakpoints causing PSI interrupt storm.
>>
>> gdbserver itself was due for a bit of attention so there's a bunch of
>> improvements and fixes.
>>
>> Multi-threaded debugging is implemented later in the series using the
>> gdb "all-stop" threads model (all target threads are stopped if any is
>> stopped).
>>
>> Since v1:
>> - Made changes suggested by Joel (thanks).
>> - Made a generated target, split out the regen of the stale
>>   gdb_parser_precompile.c into that patch.
>> - Make the double-ctrl-C really immediately kill.
>> - Implemented multi-threaded debugging.
>> - A few more smaller improvements (put_mem handling, breakpoint
>>   command handling, returning more registers).
>> - Redudce round trips further by returning registers with stop reason.
>> - POWER9 support as well.
>> - Proper SPATTN / attn detection and clearing for POWER9/10.
> 
> Looking good. Unless there's things you want to fix on the first go,
> I'll merge these and you can send any improvements as follow up
> patches?

Thanks for the review, sorry it took so long to get around to replying.

You raised some good points but if I can address them incrementally
might be easier.

Thanks,
Nick