From: Andi Kleen <ak@linux.intel.com>
To: Chuck Ebbert <cebbert@redhat.com>
Cc: linux-kernel@vger.kernel.org, David Woodhouse <dwmw2@infradead.org>
Subject: Re: b44 driver causes panic when using swiotlb
Date: Mon, 31 Jan 2011 08:36:39 -0800 [thread overview]
Message-ID: <20110131163639.GA32095@tassilo.jf.intel.com> (raw)
In-Reply-To: <20110131105412.7252a09c@katamari>
On Mon, Jan 31, 2011 at 10:54:12AM -0500, Chuck Ebbert wrote:
> The b44 driver is triggering this panic in swiotlb_map_page():
>
> if (!dma_capable(dev, dev_addr, size))
> panic("map_single: bounce buffer is not DMA'ble");
>
> The kernel log says the bounce buffers are at 0xdb400000, but b44 can
> only do DMA to the first 1GB of memory:
b44 needs to use GFP_DMA then and do its own custom bouncing.
The standard pci_map_* bounce buffering is only designed for at least
32bit capable devices.
BTW I'm pretty sure this worked at some point, must have regressed
somehow.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2011-01-31 16:36 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 15:54 Chuck Ebbert
2011-01-31 16:36 ` Andi Kleen [this message]
2011-02-01 0:54 ` Robert Hancock
2011-02-01 1:28 ` FUJITA Tomonori
2011-02-01 3:22 ` Robert Hancock
2011-02-01 5:22 ` FUJITA Tomonori
2011-02-15 0:47 ` Robert Hancock
2011-02-01 21:18 ` Chuck Ebbert
2011-02-02 0:06 ` FUJITA Tomonori
2011-02-02 0:09 ` FUJITA Tomonori
2011-02-01 18:07 ` Andi Kleen
2011-02-01 21:44 ` Robert Hancock
2011-02-01 13:54 ` FUJITA Tomonori
2011-02-14 11:59 ` FUJITA Tomonori
2011-02-14 16:41 ` Arkadiusz Miśkiewicz
2011-02-15 0:39 ` FUJITA Tomonori
2011-02-15 22:03 ` Chuck Ebbert
[not found] <4D478EDC.4070004@lwfinger.net>
2011-02-01 4:53 ` Larry Finger
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=20110131163639.GA32095@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=cebbert@redhat.com \
--cc=dwmw2@infradead.org \
--cc=linux-kernel@vger.kernel.org \
/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
all inboxes | Powered by JetHome®