[PATCH v3] drm: add a check to verify the size alignment

[Arunpravin Paneer Selvam]

On 11/04/22 7:02 pm, Matthew Auld wrote:
> On 11/04/2022 13:42, Christian König wrote:
>>
>> Am 11.04.22 um 11:47 schrieb Matthew Auld:
>>> On 11/04/2022 08:38, Arunpravin Paneer Selvam wrote:
>>>> Add a simple check to reject any size not aligned to the
>>>> min_page_size.
>>>>
>>>> when size is not aligned to min_page_size, driver module
>>>> should handle in their own way either to round_up() the
>>>> size value to min_page_size or just to enable WARN_ON().
>>>>
>>>> If we dont handle the alignment properly, we may hit the
>>>> following bug, Unigine Heaven has allocation requests for
>>>> example required pages are 257 and alignment request is 256.
>>>> To allocate the left over 1 page, continues the iteration to
>>>> find the order value which is 0 and when it compares with
>>>> min_order = 8, triggers the BUG_ON(order < min_order).
>>>>
>>>> v2: add more commit description
>>>> v3: remove WARN_ON()
>>>>
>>>> Signed-off-by: Arunpravin Paneer Selvam 
>>>> <Arunpravin.PaneerSelvam at amd.com>
>>>> Suggested-by: Matthew Auld <matthew.auld at intel.com>
>>> Reviewed-by: Matthew Auld <matthew.auld at intel.com>
>>>
>>
>> Question here is who will be pushing that to drm-misc-next? Should I 
>> take care of that?
> 
> Yes, please do.
> 
>>
>> I think it's time that Arun should request push permission for 
>> drm-misc-next.

How to get push permission for drm-misc-next, should I send request mail
to maintainers, may be next time I will push myself.

Thanks,
Arun
>>
>> Thanks,
>> Christian.