Re: [RFC summary] Enable Coherent Device Memory

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On Wed, 2017-05-17 at 11:58 +0100, Mel Gorman wrote:
> Remember that this will include the page table pages which may or may
> not be what you want.

It is fine. The GPU does translation using ATS, so the page tables are
effectively accessed by the nest MMU in the corresponding P9 chip, not
by the GPU itself. Thus we do want them to reside in system memory.

Cheers,
Ben.

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