[PATCH 1/5] drm/prime: fix potential race in drm_gem_map_detach

[Christian König]

Am 06.03.2018 um 10:15 schrieb Daniel Vetter:
> On Wed, Feb 28, 2018 at 11:25:59AM +0100, Christian König wrote:
>> Am 28.02.2018 um 10:48 schrieb Lucas Stach:
>>> Hi Christian,
>>>
>>> Am Dienstag, den 27.02.2018, 12:49 +0100 schrieb Christian König:
>>>> Unpin the GEM object only after freeing the sg table.
>>> What is the race that is being fixed here? The SG table is private to
>>> the importer and the importer should hopefully only call map_detach if
>>> it is done with all operations using the SG table. Thus it shouldn't
>>> matter that the SG table might point to moved pages during execution of
>>> this function.
>> Exactly, it shouldn't matter. This is just a precaution.
>>
>> When the device driver is buggy I want proper error messages from IOMMU and
>> not accessing pages which might already be reused for something else.
> Please add this to the commit message, rather crucial to understand the
> motivation. With that fixed you can have my
>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>
> And pls push to drm-misc.

Can I use standard git for that now? I really don't want to mess with 
dim in my environment.

Christian.