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Re: [Xen-devel] [PATCH] supporting non-NX/XD capable processors on x86_6

To: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] supporting non-NX/XD capable processors on x86_64 xenlinux
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 18 Aug 2005 09:48:36 +0100
Cc: Jerone Young <jerone@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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On 18 Aug 2005, at 05:29, Nakajima, Jun wrote:

I don't have particular preference, but the latter one's change is
smaller, and it can fix other places (that are using the attrributes
derived from __PAGE_KERNEL). But the former one is cleaner to me. If
people agree, I can make such a patch.

How does native x86/64 Linux avoid this problem? It doesn't mask __PAGE_KERNEL with __supported_pte_mask, so I'm reluctant to take this patch. Seems to me there is some other underlying difference between us and native that is not best solved by diverging even further.

Unless native doesn;t boot on these failing boxes either?

 -- Keir

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