From: Arjan van de Ven <arjan@infradead.org>
To: tcamuso@redhat.com
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Greg KH <greg@kroah.com>, Matthew Wilcox <matthew@wil.cx>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@suse.de>,
linux-kernel@vger.kernel.org, Jeff Garzik <jeff@garzik.org>,
linux-pci@atrey.karlin.mff.cuni.cz,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Martin Mares <mj@ucw.cz>, Loic Prylli <loic@myri.com>,
Prarit Bhargava <prarit@redhat.com>,
"Chumbalkar, Nagananda" <Nagananda.Chumbalkar@hp.com>,
"Schoeller, Patrick (Linux - Houston,
TX)" <Patrick.Schoeller@hp.com>,
Bhavana Nagendra <bnagendr@redhat.com>
Subject: Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
Date: Sun, 13 Jan 2008 21:05:01 -0800 [thread overview]
Message-ID: <20080113210501.4584e4d2@laptopd505.fenrus.org> (raw)
In-Reply-To: <478AD713.8060204@redhat.com>
On Sun, 13 Jan 2008 22:29:23 -0500
Tony Camuso <tcamuso@redhat.com> wrote:
> . There is no need to provide different PCI config access
> mechanisms at device granularity, since the PCI config access
> mechanism between the CPU and the Northbridge is opaque to
> the devices. PCI config mechanisms only need to differ at
> the Northbridge level.
This ignores the "lets make it not matter for the 99% of the users" case.
>
> . If the system is capable of conf1, then PCI config access
> at offsets < 256 should be confined to conf1. This solution
> is most effective for existing and legacy systems.
not "conf1" but "what the platform thinks is the best method for < 256".
We have this nice abstraction for the platform to select the best method... we should use it.
And still, it's another attempt to get this fixed (well.. it's been 2 years in the coming so far, maybe this will
be the last one, maybe it will not be... we'll see I suppose, but it sucks to be a user who doesn't
need any of the functionality that the extended config space provides in theory but gets to suffer more of the issues)
I'm all in favor of making this more reliable, but really..
we've thought it was fixed time and time again over the last two years. Please consider
limiting the scope of the damage as well.
--
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2008-01-14 5:05 UTC|newest]
Thread overview: 156+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-25 11:26 Arjan van de Ven
2007-12-27 11:52 ` Jeff Garzik
2007-12-27 14:09 ` Arjan van de Ven
2007-12-27 17:52 ` Linus Torvalds
2008-01-11 19:02 ` Greg KH
2008-01-11 19:09 ` Arjan van de Ven
2008-01-11 19:14 ` Greg KH
2008-01-11 19:28 ` Matthew Wilcox
2008-01-11 19:40 ` Arjan van de Ven
2008-01-11 19:45 ` Greg KH
2008-01-11 19:49 ` Matthew Wilcox
2008-01-11 19:58 ` Linus Torvalds
2008-01-11 20:17 ` Matthew Wilcox
2008-01-11 20:27 ` Linus Torvalds
2008-01-11 20:42 ` Matthew Wilcox
2008-01-11 21:12 ` Linus Torvalds
2008-01-11 21:17 ` Matthew Wilcox
2008-01-11 21:28 ` Linus Torvalds
2008-01-11 21:38 ` Matthew Wilcox
2008-01-11 23:58 ` Ivan Kokshaysky
2008-01-12 0:17 ` Jesse Barnes
2008-01-12 0:26 ` Greg KH
2008-01-12 14:40 ` Ivan Kokshaysky
2008-01-12 15:46 ` Arjan van de Ven
2008-01-12 16:23 ` Ivan Kokshaysky
2008-01-12 17:45 ` Arjan van de Ven
2008-01-12 18:17 ` Matthew Wilcox
2008-01-12 21:49 ` Ivan Kokshaysky
2008-01-12 23:01 ` Arjan van de Ven
2008-01-13 0:12 ` Tony Camuso
2008-01-13 0:40 ` Arjan van de Ven
2008-01-13 1:36 ` Tony Camuso
2008-01-13 4:42 ` Arjan van de Ven
2008-01-13 4:47 ` Matthew Wilcox
2008-01-13 6:43 ` Jeff Garzik
2008-01-13 12:43 ` Tony Camuso
2008-01-13 17:03 ` Arjan van de Ven
2008-01-13 21:28 ` Tony Camuso
2008-01-14 0:54 ` Alan Cox
2008-01-14 1:33 ` Arjan van de Ven
2008-01-14 3:29 ` Tony Camuso
2008-01-14 5:05 ` Arjan van de Ven [this message]
2008-01-14 13:01 ` Tony Camuso
2008-01-14 14:46 ` Arjan van de Ven
2008-01-14 15:23 ` Tony Camuso
2008-01-14 16:01 ` Arjan van de Ven
2008-01-14 16:08 ` Tony Camuso
2008-01-14 9:11 ` Alan Cox
2008-01-14 5:20 ` Linus Torvalds
2008-01-13 18:23 ` Loic Prylli
2008-01-13 18:41 ` Arjan van de Ven
2008-01-13 20:43 ` Matthew Wilcox
2008-01-13 21:18 ` Loic Prylli
2008-01-13 20:51 ` Loic Prylli
2008-01-13 7:08 ` Benjamin Herrenschmidt
2008-01-13 7:24 ` Matthew Wilcox
2008-01-13 7:58 ` Matthew Wilcox
2008-01-13 17:01 ` Arjan van de Ven
2008-01-14 22:52 ` Matthew Wilcox
2008-01-14 23:04 ` Adrian Bunk
2008-01-15 16:00 ` Loic Prylli
2008-01-15 17:46 ` Greg KH
2008-01-15 17:56 ` Matthew Wilcox
2008-01-15 19:27 ` Tony Camuso
2008-01-15 19:38 ` Linus Torvalds
2008-01-15 19:40 ` Matthew Wilcox
2008-01-15 22:12 ` Loic Prylli
2008-01-19 16:58 ` Grant Grundler
2008-01-28 18:32 ` Tony Camuso
2008-01-28 20:44 ` Greg KH
2008-01-28 22:31 ` Matthew Wilcox
2008-01-28 22:53 ` Greg KH
2008-01-29 2:56 ` Matthew Wilcox
2008-01-29 2:57 ` PCI x86: always use conf1 to access config space below 256 bytes Matthew Wilcox
2008-01-29 13:21 ` Greg KH
2008-01-29 23:43 ` Matthew Wilcox
2008-01-30 0:04 ` Linus Torvalds
2008-01-29 3:03 ` [PATCH] Change pci_raw_ops to pci_raw_read/write Matthew Wilcox
2008-02-03 7:30 ` Yinghai Lu
2008-02-07 15:54 ` Tony Camuso
2008-02-07 16:28 ` Arjan van de Ven
2008-02-07 16:36 ` Tony Camuso
2008-02-08 2:28 ` Grant Grundler
2008-02-09 12:41 ` Matthew Wilcox
2008-02-10 6:25 ` Yinghai Lu
2008-02-10 7:21 ` Greg KH
2008-02-10 14:51 ` Matthew Wilcox
2008-02-10 19:13 ` Grant Grundler
2008-02-10 19:37 ` Matthew Wilcox
2008-02-10 20:16 ` Yinghai Lu
2008-02-10 20:19 ` Matthew Wilcox
2008-02-10 20:25 ` Yinghai Lu
2008-02-10 20:32 ` Matthew Wilcox
2008-02-10 20:47 ` Yinghai Lu
2008-02-10 20:24 ` Linus Torvalds
2008-02-10 20:45 ` Matthew Wilcox
2008-02-10 23:02 ` raw_pci_read in quirk_intel_irqbalance Matthew Wilcox
2008-02-11 5:04 ` Matthew Wilcox
2008-02-11 7:49 ` Grant Grundler
2008-02-11 16:15 ` Matthew Wilcox
2008-02-11 17:18 ` Linus Torvalds
2008-02-11 19:38 ` Grant Grundler
2008-02-11 1:49 ` [PATCH] Change pci_raw_ops to pci_raw_read/write Yinghai Lu
2008-02-11 2:53 ` Robert Hancock
2008-02-11 5:59 ` Yinghai Lu
2008-02-11 22:10 ` Andrew Morton
2008-02-11 22:38 ` Ingo Molnar
2008-01-29 3:05 ` [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in Arjan van de Ven
2008-01-29 3:18 ` Matthew Wilcox
2008-01-29 13:19 ` Greg KH
2008-01-29 14:15 ` Tony Camuso
2008-01-29 14:47 ` Arjan van de Ven
2008-01-29 15:15 ` Tony Camuso
2008-01-29 15:29 ` Arjan van de Ven
2008-01-29 16:26 ` Tony Camuso
2008-01-29 23:57 ` Matthew Wilcox
2008-01-30 2:30 ` Tony Camuso
2008-01-30 3:45 ` Matthew Wilcox
2008-01-30 15:15 ` Ivan Kokshaysky
2008-01-30 15:42 ` Arjan van de Ven
2008-01-30 20:14 ` Ivan Kokshaysky
2008-01-31 5:51 ` Jesse Barnes
2008-01-11 19:54 ` Arjan van de Ven
2008-01-11 20:55 ` Greg KH
2008-01-15 12:58 ` Øyvind Vågen Jægtnes
[not found] <fa.m7tRTz/ymu3iMyLTO2aF1Tvaw24@ifi.uio.no>
[not found] ` <fa.XrRLIuL4juNAXXaMPF3iY8FyWW8@ifi.uio.no>
[not found] ` <fa.gv3MUHxQvd7EaG/0hhC9IzBvIlA@ifi.uio.no>
2007-12-27 17:59 ` Robert Hancock
2007-12-27 19:47 ` Arjan van de Ven
[not found] ` <fa.H0fcNl3b6xVBwzWUgT72M4K6KOU@ifi.uio.no>
2007-12-27 18:15 ` Robert Hancock
2007-12-27 18:30 ` Kai Ruhnau
2007-12-27 18:58 ` Linus Torvalds
2007-12-27 21:10 ` Loic Prylli
2007-12-27 21:21 ` Matthew Wilcox
2007-12-27 21:37 ` Linus Torvalds
2007-12-27 21:46 ` Linus Torvalds
2007-12-27 22:18 ` Kai Ruhnau
2007-12-28 4:27 ` Daniel Barkalow
2007-12-28 5:32 ` Linus Torvalds
2007-12-28 6:07 ` Daniel Barkalow
2007-12-28 10:34 ` Ivan Kokshaysky
2007-12-28 16:14 ` Arjan van de Ven
2007-12-28 16:38 ` Ivan Kokshaysky
2007-12-28 17:40 ` Loic Prylli
2007-12-28 21:12 ` Ivan Kokshaysky
2008-01-13 6:01 ` Matthew Wilcox
2008-01-13 7:19 ` Loic Prylli
2007-12-28 5:31 ` Benjamin Herrenschmidt
2007-12-27 21:59 ` Kai Ruhnau
2007-12-28 5:27 ` Benjamin Herrenschmidt
2007-12-28 5:29 ` Benjamin Herrenschmidt
2007-12-28 5:37 ` Linus Torvalds
2007-12-28 6:06 ` Benjamin Herrenschmidt
2007-12-28 19:14 ` Loic Prylli
2007-12-28 20:42 ` Benjamin Herrenschmidt
2007-12-28 0:18 ` Robert Hancock
[not found] <fa.2KorSXroIUtdRjFJWJwy49QuIYk@ifi.uio.no>
[not found] ` <fa.KgDY4hzBogAL+o607R+LHzW+HTc@ifi.uio.no>
[not found] ` <fa.xzH/eH5b6vCHpOD31Cq2nyq6z/k@ifi.uio.no>
[not found] ` <fa.EPUIDYIoxtDNcRrL9p3fAkr80Lo@ifi.uio.no>
[not found] ` <fa.uPoC9dcdekzy7g8QYFyuwelukiQ@ifi.uio.no>
[not found] ` <fa.O9WUKjAu+MfGg712w8Y4HkQ7GIo@ifi.uio.no>
2008-01-13 1:56 ` Robert Hancock
[not found] ` <fa.y9bLGEm23C6rL/wz7kMpKYF67oM@ifi.uio.no>
[not found] ` <fa.S+otiE5kNySVMlhUagdf/n9GRIc@ifi.uio.no>
[not found] ` <fa.OH5C/OjPYJXn8kSOHV/09piVz0E@ifi.uio.no>
[not found] ` <fa.jj0GkdAagaR3CLapBSdT1psD3Ps@ifi.uio.no>
[not found] ` <fa.EgRiN/duILxBcenHk7dQyC+rldw@ifi.uio.no>
2008-01-14 23:59 ` Robert Hancock
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=20080113210501.4584e4d2@laptopd505.fenrus.org \
--to=arjan@infradead.org \
--cc=Nagananda.Chumbalkar@hp.com \
--cc=Patrick.Schoeller@hp.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=benh@kernel.crashing.org \
--cc=bnagendr@redhat.com \
--cc=greg@kroah.com \
--cc=gregkh@suse.de \
--cc=ink@jurassic.park.msu.ru \
--cc=jeff@garzik.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@atrey.karlin.mff.cuni.cz \
--cc=loic@myri.com \
--cc=matthew@wil.cx \
--cc=mj@ucw.cz \
--cc=prarit@redhat.com \
--cc=tcamuso@redhat.com \
--cc=torvalds@linux-foundation.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®