From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.xen@gmail.com>
Subject: Re: [Patch v2] x86/boot: Use mov to cr0 in preference
 to lmsw
Date: Wed, 28 Aug 2013 13:54:50 +0100
Message-ID: <CE43B1AA.321DB%keir.xen@gmail.com>
References: <1377686207-16713-1-git-send-email-andrew.cooper3@citrix.com>
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Cc: Jan Beulich <JBeulich@suse.com>
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On 28/08/2013 11:36, "Andrew Cooper" <andrew.cooper3@citrix.com> wrote:

> lmsw is for compability for 286 processors only, and any more modern
> processors are recomended to use mov to cr0.  Xen has never been capable of
> booting on a 286, given its multiboot entry.
> 
> Furthermore, this avoids needless playing with the MP, EM and TS bits.  These
> do get explicitly chosen slightly later on boot.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: Keir Fraser <keir@xen.org>
> CC: Jan Beulich <JBeulich@suse.com>

I don't know. This seems quite pointless.