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From: "H. Peter Anvin" <hpa@zytor.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Arjan van de Ven <arjan@infradead.org>,
	linux-kernel@vger.kernel.org, gregkh@suse.de,
	linux-pci@atrey.karlin.mff.cuni.cz,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue
Date: Sat, 22 Dec 2007 21:57:06 -0800	[thread overview]
Message-ID: <476DF8B2.2060608@zytor.com> (raw)
In-Reply-To: <476DE07A.4000204@garzik.org>

Jeff Garzik wrote:
> 
> 2) It is legal for PCI-Express to put capabilities anywhere in PCI 
> config space, including extended config space.  (I hope our PCI cap 
> walking code checks for overruns...)
> 

Uh, not really.  The classical capability format only has 8-bit 
addresses, and the spec requires that all extended config space that is 
used be claimed by extended capabilities -- a different format chain.

	-hpa

  parent reply	other threads:[~2007-12-23  6:04 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-22 12:31 [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue Arjan van de Ven
2007-12-22 12:35 ` [patch] opt the sky2 driver into using extended config space Arjan van de Ven
2007-12-22 20:28   ` Stephen Hemminger
2007-12-22 14:20 ` [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue Jeff Garzik
2007-12-22 14:47   ` Arjan van de Ven
2007-12-22 15:54     ` Matthew Wilcox
2007-12-22 16:02       ` Arjan van de Ven
2007-12-22 21:10         ` Matthew Wilcox
2007-12-23 23:33           ` Benjamin Herrenschmidt
2007-12-22 18:06     ` Linus Torvalds
2007-12-22 19:30       ` Martin Mares
2007-12-22 20:15         ` Arjan van de Ven
2007-12-22 20:36           ` Martin Mares
2007-12-23  1:29           ` Jeff Garzik
2007-12-23  1:26       ` Jeff Garzik
2007-12-23  3:46         ` Linus Torvalds
2007-12-23  4:11           ` Jeff Garzik
2007-12-23  4:35             ` Linus Torvalds
2007-12-23  4:52               ` Jeff Garzik
2007-12-23  5:00                 ` Linus Torvalds
2007-12-23  5:09                   ` Jeff Garzik
2007-12-23 21:09                   ` Benjamin Herrenschmidt
2007-12-23 21:15                     ` Martin Mares
2007-12-23 22:32                       ` Ivan Kokshaysky
2007-12-23 23:06                       ` Benjamin Herrenschmidt
2007-12-23 23:19                         ` Benjamin Herrenschmidt
2007-12-23  5:27                 ` Loic Prylli
2007-12-23  5:44                   ` Jeff Garzik
2007-12-23  8:33                     ` Loic Prylli
2007-12-23 11:03                     ` Ivan Kokshaysky
2007-12-23 17:32                       ` Linus Torvalds
2007-12-24  7:31                         ` Jeff Garzik
2007-12-24 18:51                           ` Linus Torvalds
2007-12-24 21:22                             ` Matthew Wilcox
2007-12-27 11:46                             ` Jeff Garzik
2007-12-27 14:09                               ` Arjan van de Ven
2007-12-24  7:22                       ` Jeff Garzik
2007-12-24 15:47                         ` Ivan Kokshaysky
2007-12-23 21:13                     ` Benjamin Herrenschmidt
2007-12-23 10:33                 ` Arjan van de Ven
2007-12-24  7:04                   ` Jeff Garzik
2007-12-24 11:49                     ` Arjan van de Ven
2007-12-24 11:54                       ` Jeff Garzik
2007-12-24 12:00                         ` Arjan van de Ven
2007-12-25  9:22                           ` Martin Mares
2007-12-25  9:40                             ` Martin Mares
2007-12-23  4:13           ` Jeff Garzik
2007-12-23  4:18             ` Jeff Garzik
2007-12-23  4:44               ` Linus Torvalds
2007-12-23  5:04                 ` Jeff Garzik
2007-12-23  5:18                   ` Linus Torvalds
2007-12-23  5:22                     ` Jeff Garzik
2007-12-23  4:40             ` Linus Torvalds
2007-12-23 10:18               ` Martin Mares
2007-12-23  5:09             ` Loic Prylli
2007-12-23  5:57             ` H. Peter Anvin [this message]
2007-12-23  1:34     ` Jeff Garzik
2007-12-22 20:43 ` Benjamin Herrenschmidt
     [not found] <fa.pFsY/52FEkQYqrDPnPMxmcUOsRY@ifi.uio.no>
2007-12-22 16:22 ` Robert Hancock
2007-12-22 19:25   ` Greg KH
2007-12-23  0:56     ` Jeff Garzik

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