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Re: [Xen-devel] [PATCH] xen: Try to work around a BIOS that disables SVM but does not lock it

At 18:04 +0000 on 07 Mar (1331143469), George Dunlap wrote:
> On Wed, Mar 7, 2012 at 5:59 PM, George Dunlap
> <george.dunlap@xxxxxxxxxxxxx> wrote:
> > This is for a particular system we found with this problem; a HP DL785 with 
> > BIOS
> > dated 08/22/2008.
> >
> > Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
> Hmm, actually, looking at our ticket (CA-24173, for those who have
> access to it), I'm not sure this was ever actually shown to fix the
> bug.  Tim, can you comment?

I'm afraid I can't remember any more than is on the ticket - that was
more than two years ago. :) Do you still have one of these machines in
service to test it?

TBH, though, the 'disabled but not locked' state is a BIOS bug -
esp. since the ticket says that the BIOS claimed SVM was enabled.  
IIRC I put this patch in because we were very close to a product release
at the time and we couldn't be sure that we wouldn't hit this problem on
a lot of other customer h/w.


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