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From: Christoph Hellwig <hch@lst.de>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Finn Thain <fthain@telegraphics.com.au>,
Joshua Thompson <funaho@jurai.org>,
Greg Ungerer <gerg@linux-m68k.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@vger.kernel.org, linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@lst.de>,
iommu@lists.linux-foundation.org
Subject: Re: [RFC PATCH] m68k: set dma and coherent masks for Macintosh SONIC based ethernet
Date: Mon, 28 May 2018 07:33:38 +0200 [thread overview]
Message-ID: <20180528053338.GA3195@lst.de> (raw)
In-Reply-To: <20180527041505.GB31985@roeck-us.net>
On Sat, May 26, 2018 at 09:15:05PM -0700, Guenter Roeck wrote:
> Good point. Maybe it would be better to limit the warning to SMP systems
> instead of (unnecessarily) fixing drivers all over the place ?
No. The coherent_dma_mask is the mask used for dma_alloc_coherent and
dma_alloc_attrs. It has nothing to do with cache coherent in SMP
systems.
next prev parent reply other threads:[~2018-05-28 5:27 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-26 23:53 Guenter Roeck
2018-05-27 3:01 ` Finn Thain
2018-05-27 4:15 ` Guenter Roeck
2018-05-28 5:33 ` Christoph Hellwig [this message]
2018-05-27 5:22 ` Michael Schmitz
2018-05-27 5:49 ` Finn Thain
2018-05-28 5:20 ` Michael Schmitz
2018-05-28 5:26 ` Finn Thain
2018-05-28 10:15 ` Geert Uytterhoeven
2018-05-28 19:59 ` Michael Schmitz
2018-05-29 7:08 ` Christoph Hellwig
2018-05-29 2:15 ` Finn Thain
2018-05-29 3:23 ` Michael Schmitz
2018-05-29 5:38 ` Finn Thain
2018-05-29 7:11 ` Christoph Hellwig
2018-05-29 11:59 ` Finn Thain
2018-05-29 20:10 ` Michael Schmitz
2018-05-29 12:04 ` Finn Thain
2018-05-30 0:28 ` Greg Ungerer
2018-05-30 19:55 ` Geert Uytterhoeven
2018-05-31 0:38 ` Greg Ungerer
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