From: Joerg Roedel <joerg.roedel@amd.com>
To: Shuah Khan <shuah.khan@hp.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Greg KH <greg@kroah.com>, <tglx@linutronix.de>,
<mingo@redhat.com>, <hpa@zytor.com>, <rob@landley.net>,
<akpm@linux-foundation.org>, <bhelgaas@google.com>,
<stern@rowland.harvard.edu>, LKML <linux-kernel@vger.kernel.org>,
<linux-doc@vger.kernel.org>, <devel@linuxdriverproject.org>,
<x86@kernel.org>, <shuahkhan@gmail.com>
Subject: Re: [PATCH] dma-debug: New interfaces to debug dma mapping errors
Date: Tue, 18 Sep 2012 15:34:14 +0200 [thread overview]
Message-ID: <20120918133414.GM2505@amd.com> (raw)
In-Reply-To: <1347921915.3227.143.camel@lorien2>
On Mon, Sep 17, 2012 at 04:45:15PM -0600, Shuah Khan wrote:
> Yeah. I will firm up my ideas a bit and summarize in a day or two. Would
> like to hear your ideas as well at that time, so we can pick the one
> that works the best.
I think the best approach for this functionality is to add a flag to
'struct dma_debug_entry' which tells whether the address has been
checked with dma_mapping error or not. On unmap or driver unload you can
then check for that flag and print a warning when an unchecked address
is detected.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2012-09-18 13:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-17 0:52 Shuah Khan
2012-09-17 2:07 ` Greg KH
2012-09-17 14:45 ` Shuah Khan
2012-09-17 15:25 ` Greg KH
2012-09-17 13:39 ` Konrad Rzeszutek Wilk
2012-09-17 15:52 ` Shuah Khan
2012-09-17 17:23 ` Konrad Rzeszutek Wilk
2012-09-17 22:45 ` Shuah Khan
2012-09-18 13:34 ` Joerg Roedel [this message]
2012-09-18 19:42 ` Shuah Khan
2012-09-18 19:45 ` Konrad Rzeszutek Wilk
2012-09-18 20:34 ` Shuah Khan
2012-09-19 13:08 ` Joerg Roedel
2012-09-19 19:16 ` Shuah Khan
2012-09-26 1:05 ` [PATCH v2] " Shuah Khan
2012-09-26 13:12 ` Konrad Rzeszutek Wilk
2012-09-26 16:23 ` Shuah Khan
2012-09-27 10:20 ` Joerg Roedel
2012-09-27 14:13 ` Shuah Khan
2012-10-03 14:55 ` [PATCH v3] " Shuah Khan
2012-10-03 21:45 ` Andrew Morton
2012-10-04 14:01 ` Konrad Rzeszutek Wilk
2012-10-04 22:16 ` Shuah Khan
2012-10-04 17:38 ` Konrad Rzeszutek Wilk
2012-10-04 22:19 ` Shuah Khan
2012-10-05 1:23 ` [PATCH v4] " Shuah Khan
2012-10-05 22:51 ` Andrew Morton
2012-10-08 17:07 ` Shuah Khan
2012-10-09 21:02 ` Andrew Morton
2012-10-10 21:50 ` Shuah Khan
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