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Date:   Wed, 22 Feb 2017 09:31:18 -0600
From:   Reza Arbab <>
To:     Jérôme Glisse <>
Cc:,,, John Hubbard <>,
        Naoya Horiguchi <>,
        David Nellans <>,
        Evgeny Baskakov <>,
        Mark Hairgrove <>,
        Sherry Cheung <>,
        Subhash Gutti <>
Subject: Re: [HMM v17 06/14] mm/migrate: new memory migration helper for use
 with device memory v3

On Fri, Jan 27, 2017 at 05:52:13PM -0500, Jérôme Glisse wrote:
>This patch add a new memory migration helpers, which migrate memory
>backing a range of virtual address of a process to different memory
>(which can be allocated through special allocator). It differs from
>numa migration by working on a range of virtual address and thus by
>doing migration in chunk that can be large enough to use DMA engine
>or special copy offloading engine.

Just wanted to say I've found these migration helpers quite useful. I've 
been prototyping some driver code which uses them, rebasing on each HMM 
revision since v14. So for what it's worth, 

Acked-by: Reza Arbab <>
Tested-by: Reza Arbab <>

Reza Arbab

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