From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Williamson <alex.williamson@hp.com>
Subject: Re: Shell test for pv vs hvm (vs dom0)
Date: Mon, 25 Feb 2008 05:58:28 -0700
Message-ID: <1203944308.7125.5.camel@lappy>
References: <C3E58772.14462%Keir.Fraser@cl.cam.ac.uk>
Mime-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C3E58772.14462%Keir.Fraser@cl.cam.ac.uk>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: "dan.magenheimer@oracle.com" <dan.magenheimer@oracle.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
List-Id: xen-devel@lists.xenproject.org


On Sat, 2008-02-23 at 08:18 +0000, Keir Fraser wrote:
> There's no general way to discriminate between HVM and native from a shell
> script. You might discriminate between HVM and PV on Linux by looking for
> /sys/hypervisor or /proc/xen.

Isn't something like this generally sufficient for a shell script?

lspci -n | grep -q "5853:0001"
if [ $? -eq 0 ]; then
	# HVM domain
elif [ -d /proc/xen ]; then
	if grep -q "control_d" /proc/xen/capabilities; then
		# DOM0
	else
		# DOMU
	fi
else
	# Native
fi

It seems fairly reliable on ia64 for Xen 3.x.  Thanks,

	Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.