From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rik van Riel <riel@redhat.com>
Subject: Re: invalid PTE for xen_start-info ?
Date: Wed, 04 Oct 2006 11:06:58 -0400
Message-ID: <4523CE12.5030207@redhat.com>
References: <C14980E6.20B1%Keir.Fraser@cl.cam.ac.uk>
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To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
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Keir Fraser wrote:

> You should use pte_pfn(), or pte_mfn(), or (pte_val() & PHYSICAL_PAGE_MASK)
> for isolating the address part of a pte. If there is *any* Linux code that
> is accessing addresses from pte contents via other methods then please do
> let us know! But I suspect this won't be the case, due to the existing need
> to mask off PAGE_NX.

Does that break compatibility between the hypervisor and
older guests?

-- 
"You don't have to be crazy to do this... but it helps." -- Bob Ross