[U-Boot] [PATCH] mx6: Set shared override bit in PL310 AUX_CTRL register

Fabio Estevam
2015-03-12T02:27:41Z

On Wed, Mar 11, 2015 at 10:04 PM, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:

> No, this is wrong. They do not. CMA remaps pages to be non-cacheable
> rather than the old technique where the above statement was true.
>
> There's some corner cases which make that less effective than it once
> was, and as I've already said, those need to be fixed. The reason
> that these were missed is because all the ARM CMA work bypassed me -
> CMA on ARM has had zero review from the point of view of the ARM
> architecture, so it's not surprising it gets stuff like this wrong.
>
> Once that's fixed, setting bit 22 is not necessary.

Understood. Thanks for the clarification.