[Mesa-dev] No luck with tstellar/llvm on HD4890

[Andy Furniss]

Andy Furniss wrote:
> Tom Stellard wrote:
>> On Wed, Nov 07, 2012 at 09:24:13PM +0000, Andy Furniss wrote:
>>> Vincent Lejeune wrote:
>>>> git seems to have trouble sending my patch to ML atm, can you
>>>> manually apply it ? It fixes lock up here
>>>>
>>>> diff --git a/src/gallium/drivers/r600/r600_asm.c
>>>> b/src/gallium/drivers/r600/r600_asm.c
>>>> index 5f2548e..f06af44 100644
>>>> --- a/src/gallium/drivers/r600/r600_asm.c
>>>> +++ b/src/gallium/drivers/r600/r600_asm.c
>>>> @@ -2961,6 +2961,6 @@ void r600_bytecode_export_read(struct
>>>> r600_bytecode_output *output, uint32_t wor
>>>>    output->swizzle_w = G_SQ_CF_ALLOC_EXPORT_WORD1_SWIZ_SEL_W(word1);
>>>>    output->burst_count = G_SQ_CF_ALLOC_EXPORT_WORD1_BURST_COUNT(word1);
>>>>    output->end_of_program =
>>>> G_SQ_CF_ALLOC_EXPORT_WORD1_END_OF_PROGRAM(word1);
>>>> -output->inst =
>>>> EG_S_SQ_CF_ALLOC_EXPORT_WORD1_CF_INST(G_SQ_CF_ALLOC_EXPORT_WORD1_CF_INST(word1));
>>>>
>>>> +output->inst =
>>>> R600_S_SQ_CF_ALLOC_EXPORT_WORD1_CF_INST(G_SQ_CF_ALLOC_EXPORT_WORD1_CF_INST(word1));
>>>>
>>>>    output->barrier = G_SQ_CF_ALLOC_EXPORT_WORD1_BARRIER(word1);
>>>>    }
>>>> --
>>>
>>> This helps - on mesa head, demos/openarena/nexuiz run OK (nexuiz
>>> stutters a bit initially compared to R600_LLVM=0, but then I am running
>>> a debug build of llvm).
>>>
>>> etqw now locks GPU as soon as it loads when using llvm.
>>>
>>
>> Is this a regression caused by the same commit?
>
> Yes, but etqw has problems anyway.
>
> Reset mesa to 84b437213294ff4e1a3bcae2f9cbb36a9b4955c4 applied patch and
> it gives GPU reset.
>
> Reset mesa to the commit before that + no patch and it runs, but gives
> the page allocation fails etc. that I posted earlier in the thread.
>
> Even with R600_LLVM=0 or llvm 3.1 etqw has some isssues with current
> mesa, but they are not the same as these.

I've found a more trivial case to reset GPU.

I see the patch went in and I am testing on mesa head -

The mesa demo dissolve will cause a reset, all other demos in that dir work.