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xen-users
RE: [Xen-users] Can Xen run 32, 32PAE and 64-bit fully virtualized domai
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To: |
"Omer Khalid" <Omer.Khalid@xxxxxxx> |
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Subject: |
RE: [Xen-users] Can Xen run 32, 32PAE and 64-bit fully virtualized domains run side-by-side? |
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From: |
"Petersson, Mats" <Mats.Petersson@xxxxxxx> |
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Date: |
Mon, 19 Feb 2007 11:53:12 +0100 |
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Cc: |
Gerd Hoffmann <kraxel@xxxxxxx>, "Daniel P. Berrange" <berrange@xxxxxxxxxx>, "Krysan, Susan" <KRYSANS@xxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx |
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Mon, 19 Feb 2007 02:52:57 -0800 |
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[Xen-users] Can Xen run 32, 32PAE and 64-bit fully virtualized domains run side-by-side? |
Actually, for 3.0.4 the below table is correct [which my mailer decided
to completely clobber when it quited it, as per expected]
This is correct (if XenSource does what they have promised) for 3.0.5
(not yet released):
------------------------------------------------------------------------
-----------------------
| | dom0
|
------------------------------------------------------------------------
-----------------------
| | Para-virtualized |
Fully-virtualized |
------------------------------------------------------------------------
-----------------------
| | 32-bit | 32-bit-p | 64-bit | 32-bit |
32-bit-p | 64-bit |
------------------------------------------------------------------------
-----------------------
| d | |
|
| o
|-----------------------------------------------------------------------
---------------
| m | 32-bit | Y | N | N | Y | Y
| Y |
| a
|-----------------------------------------------------------------------
--------------|
| i | |
|
| n
|-----------------------------------------------------------------------
--------------|
| | 32bit-P | N | Y | !Y! | N | Y
| Y |
^^^^^
| U
|-----------------------------------------------------------------------
--------------|
| | |
|
|
|-----------------------------------------------------------------------
--------------|
| | 64-bit | N | N | Y | N |
N | Y |
------------------------------------------------------------------------
-----------------------
So, with 3.0.5 it should work to run 32P on 64.
--
Mats
> -----Original Message-----
> From: okhalid.cern@xxxxxxxxx [mailto:okhalid.cern@xxxxxxxxx]
> On Behalf Of Omer Khalid
> Sent: 19 February 2007 10:30
> To: Petersson, Mats
> Cc: Krysan, Susan; Gerd Hoffmann; Daniel P. Berrange;
> xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Can Xen run 32, 32PAE and 64-bit
> fully virtualized domains run side-by-side?
>
> Hello Mats,
>
> I really appreciate your prompt reply. Just to be 100% sure
> and not to assume some thing in the "verbal language", I made
> this table to lay out the bit-landscape of dom0/domU for
> clarity purpose for Xen 3.0.5!
>
> --------------------------------------------------------------
> ---------------------------------
> | | dom0
> |
> --------------------------------------------------------------
> ---------------------------------
> | | Para-virtualized |
> Fully-virtualized |
> --------------------------------------------------------------
> ---------------------------------
> | | 32-bit | 32-bit-p | 64-bit |
> 32-bit | 32-bit-p | 64-bit |
> --------------------------------------------------------------
> ---------------------------------
> | d | |
> |
> | o
> |-------------------------------------------------------------
> -------------------------
> | m | 32-bit | Y | N | N | Y
> | Y | Y |
> | a
> |-------------------------------------------------------------
> ------------------------|
> | i | |
> |
> | n
> |-------------------------------------------------------------
> ------------------------|
> | | 32bit-P | N | Y | N | N
> | Y | Y |
> | U
> |-------------------------------------------------------------
> ------------------------|
> | | |
> |
> |
> |-------------------------------------------------------------
> ------------------------|
> | | 64-bit | N | N | Y |
> N | N | Y |
> --------------------------------------------------------------
> ---------------------------------
>
> Would you agree with this?
>
> Regards
> Omer
>
>
>
> On 2/16/07, Petersson, Mats <Mats.Petersson@xxxxxxx> wrote:
>
>
>
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> > [mailto: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> <mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx> ] On Behalf Of
> > Omer Khalid
> > Sent: 16 February 2007 15:49
> > To: Krysan, Susan
> > Cc: Petersson, Mats; Gerd Hoffmann; Daniel P. Berrange;
> > xen-users@xxxxxxxxxxxxxxxxxxx
> <mailto:xen-users@xxxxxxxxxxxxxxxxxxx>
> > Subject: Re: [Xen-users] Can Xen run 32, 32PAE and 64-bit
> > fully virtualized domains run side-by-side?
> >
> > Hello Krysan,
> >
> > I am trying to run 32 bit PAE Para-virtualized VM on a x86_64
> > with Xen 3.0.3 64 bit. I always get this error: Xen Image is
> > not compatiable.
>
> That is the expected behaviour for 3.0.3. Current
> unstable (to become
> 3.0.5) contains code to fix this for 32PAE on 64. I
> don't know if there
> are any problems running 32PAE on 64 at the moment
> [it's not what I'm
> working on, so I haven't tried it] - but one thing is
> for sure, until
> the release of 3.0.5, there is no stable release that
> supports different
> bitness in the guest and the hypervisor/Dom0.
>
> >
> > You said in one of your messages on the Xen user list that
> > you are running 32 bit, 32 bit PAE and 64 bit
> > para-virtualized and HVM VM's with out any problems, where as
> > in some threads from Jan 2007, it was argued that its not
> > possible! I am confused!
>
> You can only (in current stable realeases of Xen) run
> "same on same" PV
> guests. HVM guest are able to run "less or equal",
> meaning that a 64-bit
> hypervisor supports "all" types of guests, but a 32-bit
> hypervisor won't
> support 64-bit guests (and non-PAE hypervisor can't
> take PAE guests).
>
> >
> > Which version of Xen are you using? And are there specific
> > configuration one have to make for domU images?
>
> Read again what Susan wrote (copied here for clarity):
> > Yes, on an x86_64 host you can run a mix of 32-bit,
> > 32-bit PAE, and 64-bit fully virtualized
> domains side-by-side.
> All of those are FULLY VIRTUALIZAED guests (that is HVM
> or non-PV
> guests, whatever you want to call it.
>
> >I have also run 64-bit paravirtualized domains
> side-by-side with fully
> > virtualized domains.
>
> Still not claiming to run para-virtual at anything
> other than "same as
> Dom0".
>
> --
> Mats
>
>
> >
> > Any help would be much appreciated! Best Regards
> >
> > Omer
> >
> >
> > On 2/9/07, Krysan, Susan <KRYSANS@xxxxxxxxxx> wrote:
> >
> > Yes, on an x86_64 host you can run a mix of 32-bit,
> > 32-bit PAE, and
> > 64-bit fully virtualized domains side-by-side. I have
> > also run 64-bit
> > paravirtualized domains side-by-side with fully
> > virtualized domains.
> >
> > Weekly I boot up the following domains simultaneously
> > on x86_64 host:
> >
> > SMP 64-bit SLES10 paravirtualized domain
> > SMP 32-bit SLES10 fully virtualized domain
> > SMP 32-bit PAE SLES10 fully virtualized domain
> > SMP 64-bit SLES10 fully virtualized domain
> > UP Windows XP fully virtualized domain
> > UP Windows 2003 Server fully virtualized domain
> >
> > Once the domains have booted, I log in and run top
> > command in the SLES10
> > guests and Windows task manager in the Windows guests.
> >
> > Thanks,
> > Sue Krysan
> > Linux Systems Group
> > Unisys Corporation
> >
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> > [mailto: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> <mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx> ] On
> > Behalf Of Liang Yang
> > Sent: Friday, February 09, 2007 2:17 PM
> > To: xen-users@xxxxxxxxxxxxxxxxxxx
> <mailto:xen-users@xxxxxxxxxxxxxxxxxxx>
> > Cc: Xen devel list
> > Subject: [Xen-users] Can Xen run 32,32PAE and 64-bit
> > fully virtualized
> > domains run side-by-side?
> >
> > Hi,
> >
> > Can Xen run 32, 32PAE and 64-bit fully
> virtualized domains run
> > side-by-side?
> > Or all DomainUF has to be the same mode?
> >
> > Thanks,
> >
> > Liang
> >
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> <http://lists.xensource.com/xen-users>
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx>
> > <mailto: Xen-users@xxxxxxxxxxxxxxxxxxx>
> > http://lists.xensource.com/xen-users
> <http://lists.xensource.com/xen-users>
> >
> >
> >
> >
> >
> > --
> >
> ---------------------------------------------------------------
> >
> >
> > CERN - European Organization for Nuclear
> > IT Department, CH-1211 Geneva 23, Switzerland
> >
> > Phone: +41 (0) 22 767 7996
> > Fax: +41 (0) 22 767 4900
> > E-mail : Omer.Khalid@xxxxxxx
> > Homepage: http://cern.ch/Omer.Khalid
> <http://cern.ch/Omer.Khalid>
> >
>
>
>
>
>
>
>
> --
> ---------------------------------------------------------------
>
>
> CERN - European Organization for Nuclear
> IT Department, CH-1211 Geneva 23, Switzerland
>
> Phone: +41 (0) 22 767 7996
> Fax: +41 (0) 22 767 4900
> E-mail : Omer.Khalid@xxxxxxx <mailto:Omer.Khalid@xxxxxxx>
> Homepage: http://cern.ch/Omer.Khalid <http://cern.ch/Omer.Khalid>
>
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