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Re: [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY

From Andrew Morton <akpm@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY
Date 2017-08-17 23:20 +0200
Message-ID <ufAmS-21P-29@gated-at.bofh.it> (permalink)
References <ufgxP-5ua-3@gated-at.bofh.it> <ufgxP-5ua-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 16 Aug 2017 20:05:42 -0400 J__r__me Glisse <jglisse@redhat.com> wrote:

> Introduce a new migration mode that allow to offload the copy to
> a device DMA engine. This changes the workflow of migration and
> not all address_space migratepage callback can support this. So
> it needs to be tested in those cases.

Can you please expand on this?  What additional testing must be
performed before we are able to merge this into mainline?

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[HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY Jérôme Glisse <jglisse@redhat.com> - 2017-08-17 02:10 +0200
  Re: [HMM-v25 13/19] mm/migrate: new migrate mode  MIGRATE_SYNC_NO_COPY Andrew Morton <akpm@linux-foundation.org> - 2017-08-17 23:20 +0200
    Re: [HMM-v25 13/19] mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY Jerome Glisse <jglisse@redhat.com> - 2017-08-17 23:50 +0200

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