linux-kernel - Re: [RFC PATCH 1/4] dma-mapping: Generalise dma_32bit

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Message-ID: <20180712072051.GC15624@lst.de>
Date:   Thu, 12 Jul 2018 09:20:51 +0200
From:   Christoph Hellwig <hch@....de>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Christoph Hellwig <hch@....de>, m.szyprowski@...sung.com,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        lorenzo.pieralisi@....com, hanjun.guo@...aro.org,
        sudeep.holla@....com, robh+dt@...nel.org, frowand.list@...il.com,
        gregkh@...uxfoundation.org, joro@...tes.org, x86@...nel.org
Subject: Re: [RFC PATCH 1/4] dma-mapping: Generalise dma_32bit_limit flag

On Wed, Jul 11, 2018 at 05:56:40PM +0100, Robin Murphy wrote:
> Indeed, once we've found an approach that everyone's happy with we can have 
> a more thorough audit of exactly where else it needs to be applied. FWIW 
> I'm not aware of any 32-bit Arm systems affected by this*, but if they do 
> exist then at least there's no risk of regression since they've always been 
> busted.

Ok, great.  I just assumed arm might be affected due to the fact that
it currently parses dma-ranges DT properties.