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From: Linus Torvalds <torvalds@osdl.org>
To: Jon Smirl <jonsmirl@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
	benh@kernel.crashing.org, linux-kernel@vger.kernel.org,
	greg@kroah.com, helgehaf@aitel.hist.no
Subject: Re: Ignore disabled ROM resources at setup
Date: Mon, 29 Aug 2005 22:15:07 -0700 (PDT)	[thread overview]
Message-ID: <Pine.LNX.4.58.0508292207330.3243@g5.osdl.org> (raw)
In-Reply-To: <9e473391050829215148807c49@mail.gmail.com>



On Tue, 30 Aug 2005, Jon Smirl wrote:
> 
> I was reading the status out of the PCI config space to account for
> our friend X which enables ROMs without informing the OS. With X
> around PCI config space can get out of sync with the kernel
> structures.

Well, yes, except that we use the in-kernel resource address for the
actual ioremap() _anyway_ in the routine that calls this, so if X has
remapped the ROM somewhere else, that wouldn't work in the first place.

I'm sure X plays games with this register (I suspect that's why the Matrox 
thing broke in the first place), but I don't think it should do so while 
the kernel uses it. 

I don't think we have much choice anyway. See above.

		Linus

  parent reply	other threads:[~2005-08-30  5:16 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200508261859.j7QIxT0I016917@hera.kernel.org>
2005-08-30  2:38 ` Ignore disabled ROM resources at setup Benjamin Herrenschmidt
2005-08-30  3:15   ` Linus Torvalds
2005-08-30  4:47     ` Jon Smirl
2005-08-30  3:19   ` Benjamin Herrenschmidt
2005-08-30  3:52     ` Linus Torvalds
2005-08-30  4:09       ` Linus Torvalds
2005-08-30  4:20         ` David S. Miller
2005-08-30  4:37           ` Benjamin Herrenschmidt
2005-08-30  4:40           ` Linus Torvalds
2005-08-30  4:49             ` Benjamin Herrenschmidt
2005-08-30  5:29               ` Linus Torvalds
2005-08-30  6:46                 ` Benjamin Herrenschmidt
2005-08-31  4:16                 ` Benjamin Herrenschmidt
2005-08-30  4:51             ` Jon Smirl
2005-08-30  4:54               ` Benjamin Herrenschmidt
2005-08-30  5:15               ` Linus Torvalds [this message]
2005-08-30 14:39                 ` Alan Cox
2005-08-30 15:29                 ` Petr Vandrovec
2005-08-30  4:33       ` Benjamin Herrenschmidt
2005-08-30  5:03         ` Linus Torvalds
2005-08-30  6:40           ` Benjamin Herrenschmidt
2005-08-30  4:35   ` Jon Smirl
2005-08-30  5:32     ` David S. Miller
2005-08-30  6:43       ` Benjamin Herrenschmidt

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