linux-kernel - Re: [discuss] Re: 2.6.19-rc4: known unfixed regressions (v3)

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Message-ID: <45548662.1000409@garzik.org>
Date:	Fri, 10 Nov 2006 09:02:10 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Andi Kleen <ak@...e.de>, Linus Torvalds <torvalds@...l.org>,
	Adrian Bunk <bunk@...sta.de>,
	Jeff Chua <jeff.chua.linux@...il.com>,
	Matthew Wilcox <matthew@....cx>,
	Aaron Durbin <adurbin@...gle.com>,
	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	gregkh@...e.de, linux-pci@...ey.karlin.mff.cuni.cz
Subject: Re: [discuss] Re: 2.6.19-rc4: known unfixed regressions (v3)

Alan Cox wrote:
> Ar Gwe, 2006-11-10 am 07:56 +0100, ysgrifennodd Andi Kleen:
>> I'm sure some people will be upset again if we don't use it.
>> Perhaps there are really users who want to use the PCI-E error handling
>> for example.
> 
> And there is now hardware out there which requires accessing PCI-E
> configuration spaces. Disabling it for those cases is not a sensible
> option t all.

Yeah, mmconfig is required for accessing extended PCI configuration 
space, and for accessing ANY devices on a non-zero PCI segment (read: 
x86 PCI domains).

If you have boot devices on a PCI domain bus, you aren't booting at all, 
unless you're running -mm...

	Jeff



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