radeon driver warning

[Christian König]

Hi John,

Am 17.06.22 um 13:52 schrieb John Garry:
> Hi Christian,
>
>>
>> well, this warning is intentional.
>>
>> The key point is that your random config results in a very suboptimal 
>> situation where the graphics driver only barely work.
>
> ok
>
>>
>> And radeon is pointing that out with this warning. That is totally 
>> expected behavior.
>
> Sure, but I don't think that it should break the build.

well, this doesn't break the build we already have that for years.

What breaks the build now is that warnings are handled as errors.

>
> Can you add a boot-time warning message instead?

Yes, we already have that as well.

>
> And/Or compile out the warning when "warnings = errors"?

That should be doable I think.

Regards,
Christian.

>
> All the best,
> John
>
>>
>> Regards,
>> Christian.
>>
>> Am 17.06.22 um 12:57 schrieb John Garry:
>>> Hi guys,
>>>
>>> This warning in the radeon driver breaks my randconfig build on 
>>> v5.19-rc2:
>>>
>>> drivers/gpu/drm/radeon/radeon_object.c:186:2: error: #warning Please 
>>> enable CONFIG_MTRR and CONFIG_X86_PAT for better performance thanks 
>>> to write-combining 
>>> [;;https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fonl&data=05%7C01%7Cchristian.koenig%40amd.com%7Ca03d7af65a8a4a5bfe4108da5057dec9%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637910635599228345%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=cRh91K85SllKnVm7pkZEK%2Bv4rbrKCzLkiT%2B9Q5mJ65I%3D&reserved=0 
>>>
>>> inedocs/gcc/Warning-Options.html#index-Wcpp-Werror=cpp;;]
>>>
>>> Is anything being done to fix it? I don't see anything in -next or 
>>> on dridevel list recently which it could be.
>>>
>>> thanks,
>>> John
>>
>> .
>