From: Gerd Knorr <kraxel@suse.de>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com
Subject: Re: Re: [Xen-changelog] Fix NX/XD enable on secondary CPUs.
Date: Wed, 13 Jul 2005 13:14:25 +0200 [thread overview]
Message-ID: <20050713111425.GB5047@bytesex> (raw)
In-Reply-To: <315357b30e7899abafb8910435dad331@cl.cam.ac.uk>
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.
Gerd
--
panic("it works"); /* avoid being flooded with debug messages */
next prev parent reply other threads:[~2005-07-13 11:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1DscXL-0000Y9-14@xenbits.xensource.com>
2005-07-13 10:17 ` [Xen-changelog] Fix NX/XD enable on secondary CPUs Gerd Knorr
2005-07-13 10:52 ` Keir Fraser
2005-07-13 11:14 ` Gerd Knorr [this message]
2005-07-13 10:45 Petersson, Mats
2005-07-13 13:06 ` Keir Fraser
2005-07-13 13:51 ` Gerd Knorr
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