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Re: Enabling NX bit on Xen ports?

On Wed, Apr 21, 2010 at 01:31:53AM +0200, Jean-Yves Migeon wrote:
> Dear list,
> As some of you have noticed, I passed some hours through x86 code
> around the NXE feature (makes possible to mark specific memory pages
> as not being executable).
> I propose to enable the feature under Xen, by removing the mask
> regarding CPUID_NOX (see patch attached).
> Currently, the feature is disabled, for unknown reasons (at least by
> me). I quickly tested it under i386 and amd64.
> [...]
> Opinions? Am I missing something?

Did you test with both Xen31 and Xen33 ?

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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