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Re: [Xen-devel] Live migration leaves page tables read-only?

from [John Byrne] [Permanent Link][Original]
To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Live migration leaves page tables read-only?
From: John Byrne <john.l.byrne@xxxxxx>
Date: Fri, 08 Dec 2006 21:44:31 -0800
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John Byrne wrote:

...snipped..
I finally ran down the problem. SAP is protecting the pages PROT_NONE, so the page-present bit in the pte is not set and canonicalize/uncanonicalize code in save/restore ignore the pte. I've attached a patch. It is possible that this change should be made to the l1e tests in xc_ptrace.c; I'm not sure. 

John Byrne



The patch is against xen-unstable changeset 12815:1ad7dff99968.

John Byrne


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