[PATCH v3 0/2] Default to cachable mappings for GEM SHMEM

[Maxime Ripard]

On Tue, Nov 17, 2020 at 02:31:54PM +0100, Thomas Zimmermann wrote:
> By default, SHMEM GEM helpers map pages using writecombine. Only a few
> drivers require this setting. Others revert it to default mappings
> flags. Some could benefit from caching, but don't care.
> 
> Unify the behaviour by switching the SHMEM GEM code to use cached
> mappings (i.e., PAGE_KERNEL actually); just like regular shmem memory
> does. The 3 drivers that require write combining explicitly select it
> during GEM object creation.
> 
> The exception is dma-buf imported pages, which are always mapped
> using writecombine mode.


For the whole series:
Acked-by: Maxime Ripard <mripard at kernel.org>

Maxime
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