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[Xen-devel] 4Gb memory limit circumventable?

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Subject: [Xen-devel] 4Gb memory limit circumventable?
From: Nuutti Kotivuori <naked@xxxxxx>
Date: Mon, 29 Nov 2004 15:45:59 +0200
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The 4Gb memory limit with Xen on x86 may prove to be a real issue to
us. So I was wondering, are there any approaches that might not
require too much work to support more than 4Gb of physical memory on a

For example, could all machines run in more or less HIGHMEM style mode
(perhaps using PSE36 or PAE), and still share the paging tables as
normally happens in Xen?

In short - what would be the easiest approach to supporting more than
4Gb of physical memory in Xen and how much work would you estimate it
to be?

-- Naked

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