From: Matthew Auld <matthew.auld@intel.com>
To: "Christian König" <ckoenig.leichtzumerken@gmail.com>,
"Arunpravin Paneer Selvam" <Arunpravin.PaneerSelvam@amd.com>,
intel-gfx@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org
Cc: alexander.deucher@amd.com, christian.koenig@amd.com
Subject: Re: [PATCH v3] drm: add a check to verify the size alignment
Date: Mon, 11 Apr 2022 14:32:02 +0100 [thread overview]
Message-ID: <5f2a190a-f8ef-9b5f-d6b2-efa30f367612@intel.com> (raw)
In-Reply-To: <ca280f24-8efe-e972-4a03-700e002cc6f7@gmail.com>
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@amd.com>
>>> Suggested-by: Matthew Auld <matthew.auld@intel.com>
>> Reviewed-by: Matthew Auld <matthew.auld@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.
>
> Thanks,
> Christian.
next prev parent reply other threads:[~2022-04-11 13:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-11 7:38 [PATCH v3] drm: add a check to verify the size alignment Arunpravin Paneer Selvam
2022-04-11 9:47 ` Matthew Auld
2022-04-11 12:42 ` Christian König
2022-04-11 13:32 ` Matthew Auld [this message]
2022-04-11 13:49 ` Arunpravin Paneer Selvam
2022-04-11 13:44 ` Christian König
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