From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: "sachinp@linux.vnet.ibm.com" <sachinp@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"santil@us.ibm.com" <santil@us.ibm.com>,
"Linuxppc-dev@ozlabs.org" <Linuxppc-dev@ozlabs.org>,
"devilbis@us.ibm.com" <devilbis@us.ibm.com>,
"James.Bottomley@suse.de" <James.Bottomley@suse.de>,
"sleddog@us.ibm.com" <sleddog@us.ibm.com>,
"brking@linux.vnet.ibm.com" <brking@linux.vnet.ibm.com>,
"tj@kernel.org" <tj@kernel.org>,
"subrata@linux.vnet.ibm.com" <subrata@linux.vnet.ibm.com>,
"dipraksh@linux.vnet.ibm.com" <dipraksh@linux.vnet.ibm.com>
Subject: Re: 2.6.35-stable/ppc64/p7: Badness at lib/dma-debug.c:902, Call Trace & Instruction Dump during boot
Date: Wed, 4 Aug 2010 15:16:34 +0200 [thread overview]
Message-ID: <20100804131634.GX26098@amd.com> (raw)
In-Reply-To: <20100802205404C.fujita.tomonori@lab.ntt.co.jp>
On Mon, Aug 02, 2010 at 07:55:03AM -0400, FUJITA Tomonori wrote:
> I guess that this driver does a partial sync with
> dma_sync_single_for_* API. dma-debug can't handle it properly. It's
> likely that this is a false warning.
If this turns out to be true it is not trivial to fix. I prepare a patch
to test for you.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
WARNING: multiple messages have this Message-ID (diff)
From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: "subrata@linux.vnet.ibm.com" <subrata@linux.vnet.ibm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Linuxppc-dev@ozlabs.org" <Linuxppc-dev@ozlabs.org>,
"grant.likely@secretlab.ca" <grant.likely@secretlab.ca>,
"James.Bottomley@suse.de" <James.Bottomley@suse.de>,
"brking@linux.vnet.ibm.com" <brking@linux.vnet.ibm.com>,
"tj@kernel.org" <tj@kernel.org>,
"rcj@linux.vnet.ibm.com" <rcj@linux.vnet.ibm.com>,
"devilbis@us.ibm.com" <devilbis@us.ibm.com>,
"santil@us.ibm.com" <santil@us.ibm.com>,
"sleddog@us.ibm.com" <sleddog@us.ibm.com>,
"sachinp@linux.vnet.ibm.com" <sachinp@linux.vnet.ibm.com>,
"dipraksh@linux.vnet.ibm.com" <dipraksh@linux.vnet.ibm.com>
Subject: Re: 2.6.35-stable/ppc64/p7: Badness at lib/dma-debug.c:902, Call Trace & Instruction Dump during boot
Date: Wed, 4 Aug 2010 15:16:34 +0200 [thread overview]
Message-ID: <20100804131634.GX26098@amd.com> (raw)
In-Reply-To: <20100802205404C.fujita.tomonori@lab.ntt.co.jp>
On Mon, Aug 02, 2010 at 07:55:03AM -0400, FUJITA Tomonori wrote:
> I guess that this driver does a partial sync with
> dma_sync_single_for_* API. dma-debug can't handle it properly. It's
> likely that this is a false warning.
If this turns out to be true it is not trivial to fix. I prepare a patch
to test for you.
Joerg
--
AMD Operating System Research Center
Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632
next prev parent reply other threads:[~2010-08-04 13:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-02 10:51 2.6.35-stable/ppc64/p7: Badness at lib/dma-debug.c:902, Call Trace & Instruction Dump during boot Subrata Modak
2010-08-02 10:51 ` Subrata Modak
2010-08-02 11:55 ` FUJITA Tomonori
2010-08-02 11:55 ` FUJITA Tomonori
2010-08-04 13:16 ` Roedel, Joerg [this message]
2010-08-04 13:16 ` Roedel, Joerg
2010-08-04 14:18 ` FUJITA Tomonori
2010-08-04 14:18 ` FUJITA Tomonori
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