From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Wu Bingzheng" Subject: Run Xen on HVM guest? Date: Thu, 19 Mar 2009 16:15:30 +0800 (CST) Message-ID: <6234430.342561237450530757.JavaMail.coremail@bj163app80.163.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1704383974==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org --===============1704383974== Content-Type: multipart/alternative; boundary="----=_Part_92208_13207150.1237450530756" ------=_Part_92208_13207150.1237450530756 Content-Type: text/plain; charset=gbk Content-Transfer-Encoding: 7bit Hi men, I installed a HVM guest on Xen. And the results of 'cat /proc/cpuinfo' are different on Dom0 and DomU(HVM). The CPU mode is right on both: model name : Intel(R) Core(TM)2 Quad CPU Q9300 @ 2.50GHz However, on Dom0 'flags' contains 'vmx', which is the key of HVM, but on DomU, it doesn'e contains 'vmx'. Does it mean that HVM DomU dose not support 'vmx', so we can't install another Xen on HVM DomU? I want to know the reason why the DomU didnot have 'vmx': 1. Intel VT doesn't support 'vmx' on DomU 2. Intel VT supports, but Xen doesn't support (now) 3. Other reason Thanks, Wu ------=_Part_92208_13207150.1237450530756 Content-Type: text/html; charset=gbk Content-Transfer-Encoding: quoted-printable Hi men,

I installed a HVM guest on&nbs= p;Xen. And the results of 'cat /proc/cpuinfo'=
are different on Dom0 and DomU(HVM).

Th= e CPU mode is right on both:
  m= odel name      : Intel(R) Core= (TM)2 Quad  CPU Q9300  @ 2.50GHz
Howe= ver, on Dom0 'flags' contains 'vmx', which&nb= sp;is the key of HVM,
but on DomU, it=  doesn'e contains 'vmx'.

Does it mean = that HVM DomU dose not support 'vmx', so=  we can't install
another Xen on HVM = DomU?

I want to know the reason why&nb= sp;the DomU didnot have 'vmx':
1. Intel VT=  doesn't support 'vmx' on DomU
2. Intel&nb= sp;VT supports, but Xen doesn't support (now)=
3. Other reason

Thanks,
Wu

=CD=F8=D2=D7=D3=CA=CF=E4=A3=AC=D6=D0=B9=FA= =B5=DA=D2=BB=B4=F3=B5=E7=D7=D3=D3=CA=BC=FE=B7=FE=CE=F1=C9=CC ------=_Part_92208_13207150.1237450530756-- --===============1704383974== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1704383974==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: Run Xen on HVM guest? Date: Thu, 19 Mar 2009 08:34:37 +0000 Message-ID: References: <6234430.342561237450530757.JavaMail.coremail@bj163app80.163.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <6234430.342561237450530757.JavaMail.coremail@bj163app80.163.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Wu Bingzheng , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 19/03/2009 08:15, "Wu Bingzheng" wrote: > I want to know the reason why the DomU didnot have 'vmx': > 1. Intel VT doesn't support 'vmx' on DomU > 2. Intel VT supports, but Xen doesn't support (now) > 3. Other reason It=B9s not easy to support VMX in a domU. So we don=B9t support it. -- Keir From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhang, Xiantao" Subject: RE: Run Xen on HVM guest? Date: Thu, 19 Mar 2009 16:57:08 +0800 Message-ID: <706158FABBBA044BAD4FE898A02E4BC2244A8A8D@pdsmsx503.ccr.corp.intel.com> References: <6234430.342561237450530757.JavaMail.coremail@bj163app80.163.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <6234430.342561237450530757.JavaMail.coremail@bj163app80.163.com> Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Wu Bingzheng , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org >Does it mean that HVM DomU dose not support 'vmx', so we can't install >another Xen on HVM DomU=20 In theory, you can run Xen with dom0 and PV guests in hvm guest, but can't = install HVM guest in HVM guest because it depends on nested VT support in X= en. Xiantao= From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Magenheimer Subject: RE: Run Xen on HVM guest? Date: Thu, 19 Mar 2009 07:06:28 -0700 (PDT) Message-ID: <25c80287-1e49-4a50-960a-dbfd60520cce@default> References: Mime-Version: 1.0 Content-Type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser , Wu Bingzheng , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org But, yes, it IS possible to run Xen in an HVM, but the Xen in the HVM is only able to run PV guests. (Note "possible" doesn't mean that it will work on any given version of Xen.) > -----Original Message----- > From: Keir Fraser [mailto:keir.fraser@eu.citrix.com] > Sent: Thursday, March 19, 2009 2:35 AM > To: Wu Bingzheng; xen-devel@lists.xensource.com > Subject: Re: [Xen-devel] Run Xen on HVM guest? >=20 >=20 > On 19/03/2009 08:15, "Wu Bingzheng" wrote: >=20 > > I want to know the reason why the DomU didnot have 'vmx': > > 1. Intel VT doesn't support 'vmx' on DomU > > 2. Intel VT supports, but Xen doesn't support (now) > > 3. Other reason >=20 > It=B9s not easy to support VMX in a domU. So we don=B9t support it. >=20 > -- Keir >=20 >=20 >=20 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >