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Re: [Xen-devel] can I boot privilleged dom like dom0 via xm create

  • To: "ruby young" <yangyang@xxxxxxxxxxxxxxx>
  • From: "Derek Murray" <Derek.Murray@xxxxxxxxxxxx>
  • Date: Fri, 13 Jun 2008 11:02:45 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 13 Jun 2008 03:03:08 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi Ruby,

At present, there is no way to do this with xm. In the hypervisor,
each struct domain has an is_privileged attribute (which is at present
only set when dom0 is created at boot). You could add a domctl to
control the setting of this bit, and then write a small C program that
uses do_domctl from libxc to set the privilege on a domain.

However, simply running two privileged domains with parallel sets of
Xen tools is unlikely to work, for example because you will end up
with two instances of XenStore.


Derek Murray.

2008/6/13 ruby young <yangyang@xxxxxxxxxxxxxxx>:
> Hi all,
>     I'm using vmlinuz-2.6.18-xen0 as domU kernel and I boot it via xm
> create. But the kernel didn't panic, it's running but all of xen tools can
> not work. I am surprised at this.
>     Now My question whether I can boot privilleged dom like dom0 via xm
> create ? and how can I do it?
>     I am looking forwards to your suggestions.
> Best wishes
>                                       Ruby Young
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> 杨漾
> 北京航空航天大学计算机学院体系结构研究所
> 电话:010-82338059-132
> 邮件:9907yruby@xxxxxxxxx
> 地址:北京市海淀区学院路37号北京航空航天大学新主楼 G座1026
> --------------------------------------------------------------------------------
> Yang Yang
> Institute of Computer Architecture and System
> BeiHang University(BUAA)
> Tel: (86-10)82338059-132
> Email: 9907yruby@xxxxxxxxx
> Addr: Room 1026,Building G,The New Main Building,37# Xueyuan Rd.,Haidian
> District, Beijing 100083, PRC
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