From: Joerg Roedel <joro@8bytes.org>
To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [2.6.35] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 BUG: unable to handle kernel NULL pointer dereference at 0000000000000198
Date: Tue, 10 Aug 2010 23:25:51 +0200 [thread overview]
Message-ID: <20100810212551.GU23755@8bytes.org> (raw)
In-Reply-To: <1893257730.20100810225726@eikelenboom.it>
On Tue, Aug 10, 2010 at 10:57:26PM +0200, Sander Eikelenboom wrote:
> Hmmm the fun part seems to be .. that the usb devices on that usb2
> controller seemed to work fine on Xen.
Hmm, thats weird. In this case these devices probably do not alias at
all. But lets wait for the results when you test my patch.
> +-0a.0-[0000:09-0a]----00.0-[0000:0a]--+-01.0
> | +-01.1
> | \-01.2
Yeah, device 09:00.0 is a PCIe-to-PCI bridge and the addtional USB
controlers are behind that bridge as legacy PCI devices. Thats why the
BIOS sets up the alias-entry. It should set up 09:00.0 instead of
0a:00.0 to make things work correctly.
Joerg
next prev parent reply other threads:[~2010-08-10 21:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1154489525.20100810164850@eikelenboom.it>
[not found] ` <20100810162606.GQ23755@8bytes.org>
2010-08-10 16:57 ` [2.6.35] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 BUG: unable to handle kernel NULL pointer dereference at 0000000000000198 Sander Eikelenboom
2010-08-10 18:01 ` Joerg Roedel
2010-08-10 18:05 ` Sander Eikelenboom
2010-08-10 20:28 ` Joerg Roedel
2010-08-10 20:36 ` Sander Eikelenboom
2010-08-10 20:47 ` Joerg Roedel
2010-08-10 20:57 ` Sander Eikelenboom
2010-08-10 21:25 ` Joerg Roedel [this message]
2010-08-10 21:48 ` Sander Eikelenboom
2010-08-10 21:36 ` Sander Eikelenboom
2010-08-10 22:02 ` Joerg Roedel
2010-08-10 22:24 ` Joerg Roedel
2010-08-11 17:54 ` Sander Eikelenboom
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=20100810212551.GU23755@8bytes.org \
--to=joro@8bytes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@eikelenboom.it \
/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