regression on raven (gmc9)

[Christian König]

Hi Emily,

the root cause of the hang was found and as far as I know the plan is to 
fix this with new RLC firmware.

Please see the internal thread with the hardware guys.

Thanks,
Christian.

Am 03.04.2018 um 03:54 schrieb Deng, Emily:
> Hi Alex and Christian,
>      Those patches are important for vega10 SRIOV, without this, vega10 run many games will hang on SRIOV,
> how about to add  "if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_VEGA10)" to separate the
> bare metal and SRIOV?
>
> Best Wishes,
> Emily Deng
>
>
>
>
>> -----Original Message-----
>> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
>> Of Christian K?nig
>> Sent: Monday, April 02, 2018 11:23 PM
>> To: Alex Deucher <alexdeucher at gmail.com>; StDenis, Tom
>> <Tom.StDenis at amd.com>
>> Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Huang, Ray
>> <Ray.Huang at amd.com>; amd-gfx at lists.freedesktop.org
>> Subject: Re: regression on raven (gmc9)
>>
>> Am 02.04.2018 um 17:00 schrieb Alex Deucher:
>>> On Mon, Apr 2, 2018 at 7:17 AM, Tom St Denis <tstdenis at amd.com>
>> wrote:
>>>> This commit
>>>>
>>>> [root at raven linux]# git bisect bad
>>>> c704d7a15d292e6e222b7e990ed7e9f41617cdd8 is the first bad commit
>>>> commit c704d7a15d292e6e222b7e990ed7e9f41617cdd8
>>>> Author: Alex Deucher <alexander.deucher at amd.com>
>>>> Date:   Tue Mar 27 17:10:56 2018 -0500
>>>>
>>>>       drm/amdgpu/gmc9: use amdgpu_ring_emit_reg_write_reg_wait in gpu
>>>> tlb flush
>>>>
>>>>       Use amdgpu_ring_emit_reg_write_reg_wait.  On engines that support
>> it,
>>>>       it provides a write and wait in a single packet which avoids a missed
>>>>       ack if a world switch happens between the request and waiting for the
>>>>       ack.
>>>>
>>>>       Reviewed-by: Huang Rui <ray.huang at amd.com>
>>>>       Reviewed-by: Christian König <christian.koenig at amd.com>
>>>>       Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>>>>
>>>> :040000 040000 a08a12a316d09ea231337136cc7aa076d4da44a8
>>>> 521c8a18b0c63e185e416a267619a92822d7f268 M      drivers
>>>>
>>>> Causes my raven1 to lockup on starting X with a gfx ring stall.
>>> I've reverted the patches.
>> Yeah, you need a specialized firmware version for this which Raven probably
>> doesn't have.
>>
>> Anyway the root cause of the issue which should be fixed by this patch set
>> was found in the meantime, so the whole patch set shouldn't be necessary
>> any more.
>>
>> Christian.
>>
>>> Alex
>>>
>>>> Tom
>>>> _______________________________________________
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