linux-kernel - Re: [PATCH 2/6] mm/device-public-memory: device memory cache coherent with CPU v4

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Date:   Fri, 14 Jul 2017 09:01:16 +1000
From:   Balbir Singh <bsingharora@...il.com>
To:     Jérôme Glisse <jglisse@...hat.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     John Hubbard <jhubbard@...dia.com>,
        David Nellans <dnellans@...dia.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Michal Hocko <mhocko@...nel.org>,
        Balbir Singh <balbirs@....ibm.com>,
        Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
        "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>
Subject: Re: [PATCH 2/6] mm/device-public-memory: device memory cache
 coherent with CPU v4

On Thu, 2017-07-13 at 17:15 -0400, Jérôme Glisse wrote:
> Platform with advance system bus (like CAPI or CCIX) allow device
> memory to be accessible from CPU in a cache coherent fashion. Add
> a new type of ZONE_DEVICE to represent such memory. The use case
> are the same as for the un-addressable device memory but without
> all the corners cases.
> 
> Changed since v3:
>   - s/public/public (going back)
> Changed since v2:
>   - s/public/public
>   - add proper include in migrate.c and drop useless #if/#endif
> Changed since v1:
>   - Kconfig and #if/#else cleanup
> 
> Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
> Cc: Balbir Singh <balbirs@....ibm.com>
> Cc: Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>
> Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Dan Williams <dan.j.williams@...el.com>
> Cc: Ross Zwisler <ross.zwisler@...ux.intel.com>
> ---

Acked-by: Balbir Singh <bsingharora@...il.com>