Re: [PATCH 0/9] Add support for SVM atomics in Nouveau
From: Christoph Hellwig
Date: Thu Feb 11 2021 - 02:59:55 EST
On Wed, Feb 10, 2021 at 01:59:13PM -0400, Jason Gunthorpe wrote:
> Really what you want to do here is leave the CPU page in the VMA and
> the page tables where it started and deny CPU access to the page. Then
> all the proper machinery will continue to work.
>
> IMHO "migration" is the wrong idea if the data isn't actually moving.
Agreed.