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Date: Thu, 20 Mar 2008 12:14:29 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@elte.hu>,
       kernel list <linux-kernel@vger.kernel.org>
Cc: Greg KH <greg@kroah.com>
Subject: iommu breaks usb after resume
Message-ID: <20080320111429.GA14764@elf.ucw.cz>
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Hi!

On 64-bit machine with 4GB ram (8core from amd), iommu breaks USB
after swsusp. iommu=soft fixes that issue.

I guess iommu handling in arch/x86/kernel/ should have some
suspend/resume support, as it manipulates hardware registers...?
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html