From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: cpuidle and un-eoid interrupts at the local apic
Date: Wed, 18 Sep 2013 13:06:25 +0100
Message-ID: <52399741.9020208@citrix.com>
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To: "Thimo E." <abc@digithi.de>
Cc: Keir Fraser <keir@xen.org>, Jan Beulich <JBeulich@suse.com>, "Dong,
	Eddie" <eddie.dong@intel.com>, Xen-develList <xen-devel@lists.xen.org>, "Nakajima,
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	Xiantao" <xiantao.zhang@intel.com>
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On 17/09/2013 22:04, Thimo E. wrote:
> Hello,
>
> unfortunately the Xenserver kernel seems to not support reading the
> microcode, at least it is not populated in /proc/cpuinfo.
> Andrew, are there any special tricks to get the version out of the
> Xenserver kernel ?
>
> Best regards
>   Thimo

Sadly not.  In Xen 4.1, the microcode detail printing was
unconditionally compiled out in all cases.  This behaviour changed in
4.2 (or possibly 4.3).  Your best chance is probably to boot a recent
Linux LiveCD.

~Andrew