From: Chris Boot <bootc@bootc.net>
To: adam radford <aradford@gmail.com>
Cc: "Woodhouse, David" <david.woodhouse@intel.com>,
lkml <linux-kernel@vger.kernel.org>,
Adam Radford <linuxraid@lsi.com>,
"James E.J. Bottomley" <JBottomley@parallels.com>,
linux-scsi@vger.kernel.org
Subject: Re: iommu_iova leak [inside 3w-9xxx]
Date: Sat, 17 Sep 2011 21:17:51 +0100 [thread overview]
Message-ID: <4E75006F.2090909@bootc.net> (raw)
In-Reply-To: <CAHtARFHfxpU1JKu4092ZshvhsrRY-hx_pfnL3_+T32B3ncgWvg@mail.gmail.com>
On 17/09/2011 20:22, adam radford wrote:
> On Sat, Sep 17, 2011 at 7:29 AM, Chris Boot<bootc@bootc.net> wrote:
>> On 17 Sep 2011, at 12:57, Chris Boot wrote:
>>> On 17 Sep 2011, at 11:45, Woodhouse, David wrote:
>>>> I suppose it's vaguely possible that we're leaking them in such a way
>>>> that they remain on the rbtree, perhaps if the deferred unmap is never
>>>> actually happening... but I think it's a whole lot more likely that the
>>>> PCI driver is just never bothering to unmap the pages it maps.
> If you think 3w-9xxx is not unmapping pages it maps, please re-run with
> CONFIG_PCI_DMA_DEBUG=y
I can't find a CONFIG_PCI_DMA_DEBUG to enable in 3.1-rc6. Did you mean
CONFIG_DMA_API_DEBUG?
And as David Woodhouse mentions, the 3ware card houses my root
filesystem - is there a way I can debug without unloading the module? If
not I guess I can try to work around it but it would be difficult.
Cheers,
Chris
--
Chris Boot
bootc@bootc.net
next prev parent reply other threads:[~2011-09-17 20:17 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-16 12:43 iommu_iova leak Chris Boot
2011-09-17 10:45 ` Woodhouse, David
2011-09-17 11:57 ` Chris Boot
2011-09-17 14:29 ` iommu_iova leak [inside 3w-9xxx] Chris Boot
2011-09-17 19:22 ` adam radford
2011-09-17 19:31 ` Woodhouse, David
2011-09-17 20:17 ` Chris Boot [this message]
2011-09-18 12:06 ` Chris Boot
2011-09-18 13:39 ` Woodhouse, David
2011-09-18 14:01 ` James Bottomley
2011-09-18 14:05 ` Chris Boot
2011-09-18 14:25 ` James Bottomley
2011-09-18 14:56 ` James Bottomley
2011-09-18 16:19 ` Chris Boot
2011-09-19 15:32 ` Chris Boot
2011-09-19 19:26 ` adam radford
2011-09-19 20:54 ` Chris Boot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4E75006F.2090909@bootc.net \
--to=bootc@bootc.net \
--cc=JBottomley@parallels.com \
--cc=aradford@gmail.com \
--cc=david.woodhouse@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=linuxraid@lsi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox