From: Dave Jones <davej@redhat.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Wei Liu <wei.liu2@citrix.com>,
Francois Romieu <romieu@fr.zoreil.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: 3.14-mw regression: rtl8169 WARNING: DMA-API: exceeded 7 overlapping mappings of pfn 55ebe
Date: Thu, 13 Feb 2014 15:16:28 -0500 [thread overview]
Message-ID: <20140213201628.GA26303@redhat.com> (raw)
In-Reply-To: <CAPcyv4juAS0ODRPKE-_wXYu5bixLnvsgs3jgo4vzWcatfnyVsw@mail.gmail.com>
On Tue, Feb 11, 2014 at 06:07:10PM -0800, Dan Williams wrote:
> The overlap granularity is too large. Multiple dma_map_single
> mappings are allowed to a given page as long as they don't collide on
> the same cache line.
>
>
> Please try the attached patch to see if it fixes this issue. Works ok for me.
FWIW, since applying this, I haven't seen the 8169 warnings.
thanks,
Dave
prev parent reply other threads:[~2014-02-13 20:16 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-26 10:55 3.14-mw regression: rtl8169 WARNING: DMA-API: exceeded 7 overlapping mappings of pfn 55ebe Sander Eikelenboom
2014-01-27 0:03 ` Francois Romieu
2014-01-29 3:06 ` Dan Williams
2014-02-06 11:36 ` Sander Eikelenboom
2014-02-06 13:09 ` Sander Eikelenboom
2014-02-06 14:26 ` Dan Williams
2014-02-06 14:27 ` Sander Eikelenboom
2014-02-06 19:12 ` Dan Williams
2014-02-07 10:21 ` Sander Eikelenboom
2014-02-11 19:56 ` Sander Eikelenboom
2014-02-11 21:28 ` Eric Dumazet
2014-02-11 22:53 ` Sander Eikelenboom
2014-02-12 22:52 ` Ben Hutchings
2014-02-12 2:07 ` Dan Williams
2014-02-12 4:17 ` Eric Dumazet
2014-02-12 14:56 ` Dan Williams
2014-02-13 20:14 ` Dan Williams
2014-02-13 21:49 ` Sander Eikelenboom
2014-02-25 17:45 ` Josh Boyer
2014-02-25 17:50 ` Dan Williams
2014-02-13 20:16 ` Dave Jones [this message]
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