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Re: [Xen-devel] Re: [Xen-changelog] Fix NX/XD enable on secondary CPUs.

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-changelog] Fix NX/XD enable on secondary CPUs.
From: Gerd Knorr <kraxel@xxxxxxx>
Date: Wed, 13 Jul 2005 13:14:25 +0200
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On Wed, Jul 13, 2005 at 11:52:27AM +0100, Keir Fraser wrote:
> Does EFER_NX need setting for 32-bit PAE?
> We don't set it for *any* cpus in x86_32 builds, even cpu0...

The Dom0 linux kernel probably does for CPU #0 ...

> >  (XEN) (file=traps.c, line=872) Non-priv domain attempted 
> >RDMSR(c0000080,00000000,20100000).
> >  (XEN) (file=traps.c, line=864) Non-priv domain attempted 
> >WRMSR(c0000080,00000800,00000000).

... what the DomU kernel isn't allowed to do on CPU #1.


panic("it works"); /* avoid being flooded with debug messages */

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