From: Matthew Wilcox <matthew@wil.cx>
To: Prarit Bhargava <prarit@redhat.com>
Cc: Don Dutile <ddutile@redhat.com>,
Bjorn Helgaas <bhelgaas@google.com>,
James Paradis <jparadis@redhat.com>,
linux-pci@vger.kernel.org, mstowe@redhat.com,
matthew wilcox <matthew.wilcox@linux.intel.com>,
jbarnes@virtuousgeek.org
Subject: Re: [PATCH] pci: Workaround Stratus broken PCIE hierarchy
Date: Tue, 15 Nov 2011 13:16:46 -0700 [thread overview]
Message-ID: <20111115201646.GG4387@parisc-linux.org> (raw)
In-Reply-To: <4EC170E8.4070600@redhat.com>
On Mon, Nov 14, 2011 at 02:50:00PM -0500, Prarit Bhargava wrote:
> This only works if there is a single Down bridge connected to a single Down bridge. What Stratus/NEC has is a single Up bridge (02:00.0) connected to a Up bridge (03:00.0) and a Down bridge (03:01.0), which we know to be illegal in PCIE. So the scan of the first bridge, 03:00.0 works and no fixup is done. The code still misses the second bridge, 03:01.0.
I'd forgotten that the Down - Down link was at slot 1; I thought it was
at slot 0. So this won't help.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
next prev parent reply other threads:[~2011-11-15 20:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 14:00 [PATCH] pci: Workaround Stratus broken PCIE hierarchy Prarit Bhargava
2011-11-10 14:31 ` Matthew Wilcox
2011-11-10 16:50 ` Don Dutile
2011-11-11 17:41 ` James Paradis
2011-11-11 19:13 ` Don Dutile
2011-11-11 20:29 ` Bjorn Helgaas
2011-11-11 20:35 ` Don Dutile
2011-11-14 14:44 ` Prarit Bhargava
2011-11-14 18:14 ` Matthew Wilcox
2011-11-14 19:50 ` Prarit Bhargava
2011-11-15 20:16 ` Matthew Wilcox [this message]
2011-11-15 15:56 ` Prarit Bhargava
2011-11-15 16:08 ` Rolf Eike Beer
2011-11-15 18:14 ` Bjorn Helgaas
2011-11-15 18:25 ` Prarit Bhargava
2011-11-15 21:08 ` James Paradis
2011-11-15 21:52 ` Myron Stowe
2011-11-15 22:14 ` James Paradis
2011-11-15 20:15 ` Matthew Wilcox
2011-11-16 16:53 ` Prarit Bhargava
2011-11-17 0:18 ` Prarit Bhargava
2011-11-15 21:53 ` James Paradis
2011-11-15 22:27 ` James Paradis
2011-11-15 23:07 ` Don Dutile
-- strict thread matches above, loose matches on Subject: below --
2012-04-25 17:56 Prarit Bhargava
2012-04-25 23:35 ` Bjorn Helgaas
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=20111115201646.GG4387@parisc-linux.org \
--to=matthew@wil.cx \
--cc=bhelgaas@google.com \
--cc=ddutile@redhat.com \
--cc=jbarnes@virtuousgeek.org \
--cc=jparadis@redhat.com \
--cc=linux-pci@vger.kernel.org \
--cc=matthew.wilcox@linux.intel.com \
--cc=mstowe@redhat.com \
--cc=prarit@redhat.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.