linux-kernel - Re: Possible issue with dangling PCI BARs

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Message-ID: <20071213121435.C21124@jurassic.park.msu.ru>
Date:	Thu, 13 Dec 2007 12:14:35 +0300
From:	Ivan Kokshaysky <ink@...assic.park.msu.ru>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Robert Hancock <hancockr@...w.ca>,
	linux-pci@...ey.karlin.mff.cuni.cz,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Possible issue with dangling PCI BARs

On Thu, Dec 13, 2007 at 04:26:42PM +1100, Benjamin Herrenschmidt wrote:
> I can try to whip up some code tomorrow I suppose, though I'm always
> afraid some dodgy x86 setup will blow up...

That scares me too, but something like pci_dangling_bar(dev, idx) with
a default (for now) no-op implementation in asm-generic/pci.h should
be safe...

Ivan.
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