Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Sender: bcain=codeaurora.org@mg.codeaurora.org
DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 1CDC3C433D3
Reply-To: <bcain@codeaurora.org>
From:   "Brian Cain" <bcain@codeaurora.org>
To:     "'Christoph Hellwig'" <hch@lst.de>,
        <iommu@lists.linux-foundation.org>,
        "'Russell King'" <linux@armlinux.org.uk>
Cc:     "'Dillon Min'" <dillon.minfei@gmail.com>,
        "'Vladimir Murzin'" <vladimir.murzin@arm.com>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-hexagon@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        "'Manning, Sid'" <sidneym@quicinc.com>
References: <20210712061704.4162464-1-hch@lst.de>
In-Reply-To: <20210712061704.4162464-1-hch@lst.de>
Subject: RE: add support for the global coherent pool to the dma core
Date:   Wed, 28 Jul 2021 10:20:34 -0500
Message-ID: <03d501d783c4$1d3f10e0$57bd32a0$@codeaurora.org>
MIME-Version: 1.0
Content-Type: text/plain;
        charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Language: en-us
Thread-Index: AQGLBLs9KUWyWP2l5ibPYuIecai1XKvxfn8g
Precedence: bulk


> -----Original Message-----
> From: Christoph Hellwig <hch@lst.de>
> Sent: Monday, July 12, 2021 1:17 AM
> To: iommu@lists.linux-foundation.org; Russell King
<linux@armlinux.org.uk>;
> Brian Cain <bcain@codeaurora.org>
> Cc: Dillon Min <dillon.minfei@gmail.com>; Vladimir Murzin
> <vladimir.murzin@arm.com>; linux-arm-kernel@lists.infradead.org; linux-
> hexagon@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: add support for the global coherent pool to the dma core
> 
> Hi all,
> 
> this series adds support for using the global coherent (aka uncached)
> pool to the generic dma-direct code and then switches arm-nommu and
> hexagon over to it, together with a bunch of cleanups.

Christoph,

Thanks for sending this -- I will take a look and give some feedback soon.

> Diffstat:
>  arch/arm/Kconfig                |    5 -
>  arch/arm/mm/dma-mapping-nommu.c |  173
+--------------------------------------
> -
>  arch/hexagon/Kconfig            |    1
>  arch/hexagon/kernel/dma.c       |   57 ++-----------
>  include/linux/dma-map-ops.h     |   18 ++--
>  kernel/dma/Kconfig              |    4
>  kernel/dma/coherent.c           |  159
+++++++++++++++++-------------------
>  kernel/dma/direct.c             |   15 +++
>  8 files changed, 124 insertions(+), 308 deletions(-)