Pass "noexec=off" to the kernel, and it won't set the NX bit in it's
page-table entries, and I presume Xen will just use the same bits as the
guest asks for... One would think, at least.. [I haven't tried this, I
just scanned the kernel source code for the boot-line argument, as I
knew there is some way to enable/disable it...]
Care to divulge what the app is so I can add it to the list of apps that
I'm not going to use? ;-)
--
Mats
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> Hans-Christian Armingeon
> Sent: 28 June 2006 10:16
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] how to disable the NX flag in a domU?
>
> Hi,
>
> I am having problems with an unclean written closed source
> application, which segfaults by time, because it has
> executable code on the stack.
>
> Is it possible, to disable the NX bit on modern processors
> for a domU? I know, this is an unclean solution - but it
> would be a quick fix.
>
> Many thanks in advance,
>
> Johnny
>
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> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>
>
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