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Date: Tue, 24 Oct 2017 12:11:56 -0700
From: Mark Greer <mgreer@animalcreek.com>
To: Huacai Chen <chenhc@lemote.com>
Cc: Christoph Hellwig <hch@lst.de>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>,
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        linux-scsi@vger.kernel.org, stable@vger.kernel.org,
        "Michael S . Tsirkin" <mst@redhat.com>,
        Pawel Osciak <pawel@osciak.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Michael Chan <michael.chan@broadcom.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Ivan Mikhaylov <ivan@ru.ibm.com>, Tariq Toukan <tariqt@mellanox.com>,
        Andy Gross <agross@codeaurora.org>,
        "Mark A . Greer" <mgreer@animalcreek.com>,
        Robert Baldyga <r.baldyga@hackerion.com>
Subject: Re: [PATCH V9 1/4] dma-mapping: Rework dma_get_cache_alignment()
Message-ID: <20171024191156.GA11341@animalcreek.com>
References: <1508742767-28366-1-git-send-email-chenhc@lemote.com>
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Organization: Animal Creek Technologies, Inc.
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On Mon, Oct 23, 2017 at 03:12:44PM +0800, Huacai Chen wrote:
> Make dma_get_cache_alignment() to accept a 'dev' argument. As a result,
> it can return different alignments due to different devices' I/O cache
> coherency.
> 
> Currently, ARM/ARM64 and MIPS support coherent & noncoherent devices
> co-exist. This may be extended in the future, so add a new function
> pointer (i.e, get_cache_alignment) in 'struct dma_map_ops' as a generic
> solution.
> 
> Cc: stable@vger.kernel.org
> Cc: Michael S. Tsirkin <mst@redhat.com>
> Cc: Pawel Osciak <pawel@osciak.com>
> Cc: Marek Szyprowski <m.szyprowski@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Michael Chan <michael.chan@broadcom.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Ivan Mikhaylov <ivan@ru.ibm.com>
> Cc: Tariq Toukan <tariqt@mellanox.com>
> Cc: Andy Gross <agross@codeaurora.org>
> Cc: Mark A. Greer <mgreer@animalcreek.com>
> Cc: Robert Baldyga <r.baldyga@hackerion.com>
> Cc: Marek Szyprowski <m.szyprowski@samsung.com>
> Signed-off-by: Huacai Chen <chenhc@lemote.com>
> ---

For the mpsc stuff:

Acked-by: Mark Greer <mgreer@animalcreek.com>