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From: Robin Murphy <robin.murphy@arm.com>
To: Mark Brown <broonie@kernel.org>,
	Matthew Wilcox <matthew.r.wilcox@intel.com>,
	Christoph Hellwig <hch@lst.de>,
	Dave Chinner <dchinner@redhat.com>
Cc: xfs@oss.sgi.com, linaro-kernel@lists.linaro.org,
	linux-next@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	kernel-build-reports@lists.linaro.org
Subject: Re: next-20160722 build: 1 failures 5 warnings (next-20160722)
Date: Fri, 22 Jul 2016 12:29:22 +0100	[thread overview]
Message-ID: <57920392.5070009@arm.com> (raw)
In-Reply-To: <20160722103829.GY6509@sirena.org.uk>

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.

WARNING: multiple messages have this Message-ID (diff)
From: Robin Murphy <robin.murphy@arm.com>
To: Mark Brown <broonie@kernel.org>,
	Matthew Wilcox <matthew.r.wilcox@intel.com>,
	Christoph Hellwig <hch@lst.de>,
	Dave Chinner <dchinner@redhat.com>
Cc: kernel-build-reports@lists.linaro.org,
	linaro-kernel@lists.linaro.org, linux-next@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, xfs@oss.sgi.com
Subject: Re: next-20160722 build: 1 failures 5 warnings (next-20160722)
Date: Fri, 22 Jul 2016 12:29:22 +0100	[thread overview]
Message-ID: <57920392.5070009@arm.com> (raw)
In-Reply-To: <20160722103829.GY6509@sirena.org.uk>

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.

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

WARNING: multiple messages have this Message-ID (diff)
From: robin.murphy@arm.com (Robin Murphy)
To: linux-arm-kernel@lists.infradead.org
Subject: next-20160722 build: 1 failures 5 warnings (next-20160722)
Date: Fri, 22 Jul 2016 12:29:22 +0100	[thread overview]
Message-ID: <57920392.5070009@arm.com> (raw)
In-Reply-To: <20160722103829.GY6509@sirena.org.uk>

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.

  reply	other threads:[~2016-07-22 11:29 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-22 10:13 next-20160722 build: 1 failures 5 warnings (next-20160722) Build bot for Mark Brown
2016-07-22 10:38 ` Mark Brown
2016-07-22 10:38   ` Mark Brown
2016-07-22 10:38   ` Mark Brown
2016-07-22 11:29   ` Robin Murphy [this message]
2016-07-22 11:29     ` Robin Murphy
2016-07-22 11:29     ` Robin Murphy
2016-07-22 11:58   ` Dave Chinner
2016-07-22 11:58     ` Dave Chinner
2016-07-22 11:58     ` Dave Chinner

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