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

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Message-ID: <20080114091145.13a85db3@lxorguk.ukuu.org.uk>
Date:	Mon, 14 Jan 2008 09:11:45 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	tcamuso@...hat.com, Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Greg KH <greg@...ah.com>, Matthew Wilcox <matthew@....cx>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	Jeff Garzik <jeff@...zik.org>,
	linux-pci@...ey.karlin.mff.cuni.cz,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Martin Mares <mj@....cz>, Loic Prylli <loic@...i.com>,
	Prarit Bhargava <prarit@...hat.com>,
	"Chumbalkar, Nagananda" <Nagananda.Chumbalkar@...com>,
	"Schoeller, Patrick (Linux - Houston, TX)" <Patrick.Schoeller@...com>,
	Bhavana Nagendra <bnagendr@...hat.com>
Subject: Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver
 opt-in

> > even when designed for Redmond products.
> 
> I find it hard to believe that even they have their drivers do PCI config access via ports directly from the drivers,
> and especially in driver reference code...

Microsoft may not but the standard of Taiwanese driver code (and by
reference I mean vendor reference not OS supplier reference) is not
always great. When you have weeks to write a driver for a product with a
6 month sales lifetime I guess there are other pressures on driver
authors.

Easy enough for Intel to analyse though.

Alan
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