radeon driver warning

[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.

Can you add a boot-time warning message instead?

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

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%7C430e22f895ec4822fe5e08da50503030%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637910602602101203%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=vT%2BWgL83xuAOqv44oVU3J4ypTDzC9f%2FNslYXtbIl56Y%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
> 
> .