Xen devel - Feb 2006 - qemu on Vt-x

Hello,

I don''t have a Vt-x machine on which I can test and see; I have
a question regarding running qemu on Vt-x xen machines.

xen-unstable has a config file example:  dist/install/etc/xen/xmexample.hvm

In this file we have the follwoing line:

device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm''

The use manual says about the device_model:
 	"The device emulation tool for VMX guests.
	This parameter should not be changed.".
	
As I understand, when starting a domU on a Vt-x domain
we start the qemu-dm.
But as far as I remember for qemu on linux, running qemu should get
a parameter which is a file image name.
( for example,  the qemu User Documentation we have
"qemu linux.img").

Is this parameter exsists anywhere ? from where is it taken ? or is
it omitted ?


Is it the image from the "disk" parameter, (like in the
dist/install/etc/xen/xmexample.hvm:) ?

disk = [ ''file:/var/images/min-el3-i386.img,ioemu:hda,w'' ]


IB

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Best Regards,
Yongkang (Kangkang) 永康
>-----Original Message-----
>From: xen-devel-bounces@lists.xensource.com
>[mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Ian Brown
>Sent: 2006年2月26日 23:11
>To: Xen-devel
>Subject: [Xen-devel] qemu on Vt-x
>
>Hello,
>
>As I understand, when starting a domU on a Vt-x domain
>we start the qemu-dm.
In VT supported machine, when create HVM (VMX) domain, it will start qemu. If
only create xenU, it is same to non VT machine. (XenU config is
/etc/xen/xmeample1 etc.)
>But as far as I remember for qemu on linux, running qemu should get
>a parameter which is a file image name.
>( for example,  the qemu User Documentation we have
>"qemu linux.img").
>
>Is this parameter exsists anywhere ? from where is it taken ? or is
>it omitted ?
It is also need parameters for Qemu to create HVM domain. Xm tool help to parse
the parameters of HVM configuration file and start Qemu with them. E.g. sdl,
vnc, disk, nic, etc. You can change device_model config to:
device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm.debug''

Then you can find the Qemu parameters in /tmp/args, after run xm create
hvm_config
>
>
>Is it the image from the "disk" parameter, (like in the
>dist/install/etc/xen/xmexample.hvm:) ?
>
>disk = [ ''file:/var/images/min-el3-i386.img,ioemu:hda,w'' ]
Correct!
>
>
>IB
>
>_______________________________________________
>Xen-devel mailing list
>Xen-devel@lists.xensource.com
>http://lists.xensource.com/xen-devel
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