linux-kernel - Re: [PATCH 08/22] swiotlb: wire up ->dma_supported in swiotlb_dma

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Message-ID: <20180110153517.GF17790@lst.de>
Date:   Wed, 10 Jan 2018 16:35:17 +0100
From:   Christoph Hellwig <hch@....de>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Christoph Hellwig <hch@....de>, iommu@...ts.linux-foundation.org,
        linux-arch@...r.kernel.org, linux-mips@...ux-mips.org,
        Michal Simek <monstr@...str.eu>, linux-ia64@...r.kernel.org,
        Christian König 
        <ckoenig.leichtzumerken@...il.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        Konrad Rzeszutek Wilk <konrad@...nok.org>,
        Guan Xuetao <gxt@...c.pku.edu.cn>,
        linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 08/22] swiotlb: wire up ->dma_supported in
        swiotlb_dma_ops

On Wed, Jan 10, 2018 at 12:16:15PM +0000, Robin Murphy wrote:
> On 10/01/18 08:09, Christoph Hellwig wrote:
>> To properly reject too small DMA masks based on the addressability of the
>> bounce buffer.
>
> I reckon this is self-evident enough that it should simply be squashed into 
> the previous patch.

x86 didn't wire it up before, so I want a clear blaimpoint for this
change instead of mixing it up.