linux-kernel - Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in

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Message-ID: <20080130074249.36caa4c3@laptopd505.fenrus.org>
Date:	Wed, 30 Jan 2008 07:42:49 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Ivan Kokshaysky <ink@...assic.park.msu.ru>
Cc:	Matthew Wilcox <matthew@....cx>, Greg KH <greg@...ah.com>,
	Tony Camuso <tcamuso@...hat.com>,
	Grant Grundler <grundler@...isc-linux.org>,
	Loic Prylli <loic@...i.com>, Adrian Bunk <bunk@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	Jeff Garzik <jeff@...zik.org>,
	linux-pci@...ey.karlin.mff.cuni.cz, Martin Mares <mj@....cz>
Subject: Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver
 opt-in

On Wed, 30 Jan 2008 18:15:39 +0300
Ivan Kokshaysky <ink@...assic.park.msu.ru> wrote:

> On Tue, Jan 29, 2008 at 08:45:55PM -0700, Matthew Wilcox wrote:
> > On Tue, Jan 29, 2008 at 05:19:55AM -0800, Greg KH wrote:
> > > Matthew, with Arjan's patch, is anything that currently works now
> > > broken?  Why do you feel it is somehow "wrong"?
> > 
> > lspci is broken.  It used to be able to access extended config
> > space, and now can't unless it is patched to know about the sysfs
> > flag to enable it.
> 
> There is also likely damage to Xorg for the very same reason.
>

Xorg doesn't do pci express ..
(newer ones actually have gotten out of the "do the PCI layer ourselves" business entirely)

> Ivan.


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