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Re: next-20160722 build: 1 failures 5 warnings (next-20160722)

To: Mark Brown <broonie@xxxxxxxxxx>, Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Dave Chinner <dchinner@xxxxxxxxxx>
Subject: Re: next-20160722 build: 1 failures 5 warnings (next-20160722)
From: Robin Murphy <robin.murphy@xxxxxxx>
Date: Fri, 22 Jul 2016 12:29:22 +0100
Cc: xfs@xxxxxxxxxxx, linaro-kernel@xxxxxxxxxxxxxxxx, linux-next@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, kernel-build-reports@xxxxxxxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20160722103829.GY6509@xxxxxxxxxxxxx>
References: <E1bQXSf-0008Uu-Ej@optimist> <20160722103829.GY6509@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0
On 22/07/16 11:38, Mark Brown wrote:
[...]
> DAX is explicitly disabled on
> 32 bit ARM due to problems with virtual aliasing caches (it's not clear
> to me that it shouldn't also be disabled for arm64 for the same reason).

>From ARMv7 onwards, data caches have to behave as if PIPT, so I wouldn't
expect there to be a problem for arm64.

Robin.

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