RE: [PATCH 4/5 v5] arc: Add our own implementation of fb_pgprotect()

[Alexey Brodkin]

Hi Vineet,

> From: Alexey Brodkin [abrodkin@xxxxxxxxxxxx]
> Sent: Monday, March 28, 2016 2:36 PM
> To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx; Alexey Brodkin; Vineet Gupta; linux-snps-arc@xxxxxxxxxxxxxxxxxxx
> Subject: [PATCH 4/5 v5] arc: Add our own implementation of fb_pgprotect()
> 
> During mmaping of frame-buffer pages to user-space
> fb_protect() is called to set proper page settings.
> 
> In case of ARC we need to mark pages that are mmaped to
> user as uncached because of 2 reasons:
>  * Huge amount of data if passing through data cache will
>    thrash cache a lot making cache almost useless for other
>     less traffic hungry processes.
>  * Data written by user in FB will be immediately available for
>    hardware (such as PGU etc) without requirements to flush data
>    cache regularly.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>
> Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
> Cc: linux-snps-arc@xxxxxxxxxxxxxxxxxxx

Could you please pick up this patch in your tree so in DRM-related series won't be external dependencies any longer?

-Alexey