From: Matthew Wilcox <matthew@wil.cx>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg KH <gregkh@suse.de>, Arjan van de Ven <arjan@infradead.org>,
Greg KH <greg@kroah.com>,
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>
Subject: Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
Date: Fri, 11 Jan 2008 14:17:53 -0700 [thread overview]
Message-ID: <20080111211753.GR18741@parisc-linux.org> (raw)
In-Reply-To: <alpine.LFD.1.00.0801111311170.3148@woody.linux-foundation.org>
On Fri, Jan 11, 2008 at 01:12:12PM -0800, Linus Torvalds wrote:
>
>
> On Fri, 11 Jan 2008, Matthew Wilcox wrote:
> >
> > But they can't. We limit the size they can access to 256 bytes, unless
> > the kernel probed address 256 and it worked.
>
> Umm. Probing address 256 (or *any* address) using MMCONFIG will simply
> lock up the machine. HARD.
Did I miss a bug report? The only problems I'm currently aware of are
the ones where using MMCONFIG during BAR probing causes a hard lockup on
some Intel machines, and the ones where we get bad config data on some
AMD machines due to the configuration retry status being mishandled.
All the other lockups I'm aware of are already handled by the existing
checks.
--
Intel are signing my paycheques ... these opinions are still mine
"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:[~2008-01-11 21:18 UTC|newest]
Thread overview: 156+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-25 11:26 [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in 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 [this message]
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
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
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