From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [xen-unstable test] 57852: regressions - FAIL
Date: Mon, 8 Jun 2015 11:21:49 -0400
Message-ID: <20150608152149.GP15682@l.oracle.com>
References: <5571814C02000078000812F1@mail.emea.novell.com>
	<1433495266.7108.145.camel@citrix.com>
	<5571858C020000780008132E@mail.emea.novell.com>
	<1433501300.7108.208.camel@citrix.com>
	<557569610200007800081D4C@mail.emea.novell.com>
	<1433753590.7108.392.camel@citrix.com>
	<557579500200007800081DF0@mail.emea.novell.com>
	<1433755652.7108.405.camel@citrix.com>
	<20150608135058.GC15682@l.oracle.com>
	<21877.43770.782910.157376@mariner.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
Received: from mail6.bemta3.messagelabs.com ([195.245.230.39])
	by lists.xen.org with esmtp (Exim 4.72)
	(envelope-from <konrad.wilk@oracle.com>) id 1Z1ysC-0006aX-T9
	for xen-devel@lists.xenproject.org; Mon, 08 Jun 2015 15:22:01 +0000
Content-Disposition: inline
In-Reply-To: <21877.43770.782910.157376@mariner.uk.xensource.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Andrew Cooper <Andrew.Cooper3@citrix.com>, Ian Campbell <ian.campbell@citrix.com>, Jan Beulich <JBeulich@suse.com>, xen-devel <xen-devel@lists.xenproject.org>
List-Id: xen-devel@lists.xenproject.org

On Mon, Jun 08, 2015 at 03:47:22PM +0100, Ian Jackson wrote:
> Konrad Rzeszutek Wilk writes ("Re: [Xen-devel] [xen-unstable test] 57852: regressions - FAIL"):
> > Could it be an missing microcode update? I don't know if the OSSTest does
> > the ucode=scan or updates the microcode later?
> 
> I think osstest's machines don't get microcode updates.  I'm no expert
> on x86 microcode, but my understanding is:
> 
> Microcode updates (i) have to be loaded dynamically at boot time and
> (ii) are regarded as a non-free package by Debian.
> 
> We could arrange to install the non-free microcode package.  I haven't
> looked into it but I would expect that to automatically arrange to
> load the microcode for native boots.  It IMO ought to do the same for
> non-native boots but I wouldn't rely on that being the case.

If Debian is using dracut it just requires adding in /etc/dracut.conf
early_microcode=yes

and from there on any regenerated initramfs will have the required
microcode. Then 'ucode=scan' needs to be added on the Xen command line.

But this is a shoot in the dark - this microcode update might have nothing
to do with these failures.
> 
> Ian.