[Bug 216373] New: Uncorrected errors reported for AMD GPU

[Felix Kuehling]

Am 2022-08-24 um 01:10 schrieb Lazar, Lijo:
>
>
> On 8/23/2022 10:34 PM, Tom Seewald wrote:
>> On Sat, Aug 20, 2022 at 2:53 AM Lazar, Lijo <lijo.lazar at amd.com> wrote:
>>>
>>> Missed the remap part, the offset is here -
>>>
>>> https://elixir.bootlin.com/linux/v6.0-rc1/source/drivers/gpu/drm/amd/amdgpu/nv.c#L680 
>>>
>>>
>>>
>>> The trace is coming from *_flush_hdp.
>>>
>>> You may also check if *_remap_hdp_registers() is getting called. It is
>>> done in nbio_vx_y files, most likely this one for your device -
>>> https://elixir.bootlin.com/linux/v6.0-rc1/source/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c#L68 
>>>
>>>
>>> Thanks,
>>> Lijo
>>
>> Hi Lijo,
>>
>> I would be happy to test any patches that you think would shed some
>> light on this.
>>
> Unfortunately, I don't have any NV platforms to test. Attached is an 
> 'untested-patch' based on your trace logs.
Hi Lijo,

I like that the patch also removes some code duplication. Can you check 
that this doesn't break GFXv8 GPUs? You may need to add a NULL-check for 
adev->nbio.funcs to the if-condition.

Regards,
   Felix


>
> Thanks,
> Lijo