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Date: Thu, 27 Mar 2008 12:49:23 +0100
From: Andi Kleen <andi@firstfloor.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Ingo Molnar <mingo@elte.hu>, Andi Kleen <andi@firstfloor.org>,
       kernel list <linux-kernel@vger.kernel.org>, Greg KH <greg@kroah.com>,
       "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: iommu breaks usb after resume
Message-ID: <20080327114923.GA6589@basil.nowhere.org>
References: <20080320111429.GA14764@elf.ucw.cz> <20080321135418.GB2346@one.firstfloor.org> <20080326102151.GB18965@elf.ucw.cz> <20080326130052.GF2170@one.firstfloor.org> <20080326225407.GA9378@elf.ucw.cz> <20080326230017.GA21017@elte.hu> <20080327084231.GC25876@elf.ucw.cz> <20080327095949.GA5771@elf.ucw.cz>
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> ...this sounds like it needs to be done during resume, too, no?

This is only a workaround for BIOS that don't set up an aperture,
but yes if they don't do that it is likely needed on resume too.

You would need to add a resume handler to aperture.c

-Andi