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From: "David S. Miller" <davem@redhat.com>
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Date: Mon, 21 May 2001 00:53:21 -0700 (PDT)
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: andrewm@uow.edu.au (Andrew Morton), andrea@suse.de (Andrea Arcangeli),
        ink@jurassic.park.msu.ru (Ivan Kokshaysky),
        rth@twiddle.net (Richard Henderson), linux-kernel@vger.kernel.org
Subject: Re: alpha iommu fixes
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Alan Cox writes:
 > And how do you propose to implemnt cache coherent pci allocations
 > on machines which lack the ability to have pages coherent between
 > I/O and memory space ?

Pages, being in memory space, are never in I/O space.

Maybe I don't understand the situation.

Later,
David S. Miller
davem@redhat.com