linux-kernel - iommu breaks usb after resume

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Date:	Thu, 20 Mar 2008 12:14:29 +0100
From:	Pavel Machek <pavel@....cz>
To:	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	kernel list <linux-kernel@...r.kernel.org>
Cc:	Greg KH <greg@...ah.com>
Subject: iommu breaks usb after resume

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
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