Hello, Does anyone know which is the setup to run paravirtualized domu 32bits inside a dom0 64bits... I''ve got Xen 3.1 Do I must add something to the config file ? Do I should install 32bits kernel ? Regards _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I believe you just install the 32 bit OS. It''s like running 32 bit linux on a 64bit box. You don''t need to tell the box it''s running a 32 bit OS. Of course, I could be wrong... -Dylan> Hello, > > Does anyone know which is the setup to run paravirtualized domu 32bits > inside a dom0 64bits... > I''ve got Xen 3.1 > > Do I must add something to the config file ? > Do I should install 32bits kernel ? > > Regards > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> I believe you just install the 32 bit OS. It''s like running 32 bit > linux on a 64bit box. You don''t need to tell the box it''s running a > 32 bit OS. > > Of course, I could be wrong...If you install a 32-bit filesystem and boot it using a 32-bit PAE XenLinux kernel, Xen will recognise that it''s a 32-bit guest and set things up appropriately. Cheers, Mark> -Dylan > > > Hello, > > > > Does anyone know which is the setup to run paravirtualized domu 32bits > > inside a dom0 64bits... > > I''ve got Xen 3.1 > > > > Do I must add something to the config file ? > > Do I should install 32bits kernel ? > > > > Regards > > > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- Dave: Just a question. What use is a unicyle with no seat? And no pedals! Mark: To answer a question with a question: What use is a skateboard? Dave: Skateboards have wheels. Mark: My wheel has a wheel! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Sébastien CRAMATTE escribió:> But I must Install a 32bits PAE kernel in dom0 and setup properly in > the config file isn''t it ? > When I try to instal 32bits kernel package dom0 tell me that the > architecture is incorrect. > > If I run the 32 bits domU with the dom0 kernel and uname -a return > x86_64 inside the domU. > In reality I just need to install a 32 bits domU to compile a 32bits > kernel for another application. > > make menuconfig detect that I''m on 64bits architecture so I can''t > choose 32bits processor. > > > > > Mark Williamson escribió: > >>> I believe you just install the 32 bit OS. It''s like running 32 bit >>> linux on a 64bit box. You don''t need to tell the box it''s running a >>> 32 bit OS. >>> >>> Of course, I could be wrong... >>> >>> >> If you install a 32-bit filesystem and boot it using a 32-bit PAE XenLinux >> kernel, Xen will recognise that it''s a 32-bit guest and set things up >> appropriately. >> >> Cheers, >> Mark >> >> >> >>> -Dylan >>> >>> >>> >>>> Hello, >>>> >>>> Does anyone know which is the setup to run paravirtualized domu 32bits >>>> inside a dom0 64bits... >>>> I''ve got Xen 3.1 >>>> >>>> Do I must add something to the config file ? >>>> Do I should install 32bits kernel ? >>>> >>>> Regards >>>> >>>> >>>> _______________________________________________ >>>> Xen-users mailing list >>>> Xen-users@lists.xensource.com >>>> http://lists.xensource.com/xen-users >>>> >>>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@lists.xensource.com >>> http://lists.xensource.com/xen-users >>> >>> >> >> >> > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
D''oh! My mistake!! You can run 32 bit HVM guests no problem on a 64 bit dom0, but you can''t run 32 bit PV guests on a 64 bit dom0. I really want to make a grid to add to the faq: Dom0 32bit 64bit D 32bit PV yes no o 64bit PV ?? yes m 32bit HVM yes yes U 64bit HVM ?? yes Does anyone have anything to add/fix about that grid? Especially if/when you can run a 64bit domU on a 32bit dom0? -Dylan> > But I must Install a 32bits PAE kernel in dom0 and setup properly in > > the config file isn''t it ? > > When I try to instal 32bits kernel package dom0 tell me that the > > architecture is incorrect. > > > > If I run the 32 bits domU with the dom0 kernel and uname -a return > > x86_64 inside the domU. > > In reality I just need to install a 32 bits domU to compile a 32bits > > kernel for another application. > > > > make menuconfig detect that I''m on 64bits architecture so I can''t > > choose 32bits processor. > > > > > > > > > > Mark Williamson escribió: > > > >>> I believe you just install the 32 bit OS. It''s like running 32 bit > >>> linux on a 64bit box. You don''t need to tell the box it''s running a > >>> 32 bit OS. > >>> > >>> Of course, I could be wrong... > >>> > >>> > >> If you install a 32-bit filesystem and boot it using a 32-bit PAE XenLinux > >> kernel, Xen will recognise that it''s a 32-bit guest and set things up > >> appropriately. > >> > >> Cheers, > >> Mark > >> > >> > >> > >>> -Dylan > >>> > >>> > >>> > >>>> Hello, > >>>> > >>>> Does anyone know which is the setup to run paravirtualized domu 32bits > >>>> inside a dom0 64bits... > >>>> I''ve got Xen 3.1 > >>>> > >>>> Do I must add something to the config file ? > >>>> Do I should install 32bits kernel ? > >>>> > >>>> Regards > >>>> > >>>> > >>>> _______________________________________________ > >>>> Xen-users mailing list > >>>> Xen-users@lists.xensource.com > >>>> http://lists.xensource.com/xen-users > >>>> > >>>> > >>> _______________________________________________ > >>> Xen-users mailing list > >>> Xen-users@lists.xensource.com > >>> http://lists.xensource.com/xen-users > >>> > >>> > >> > >> > >> > > > > > > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Tue, Jul 31, 2007 at 12:18:20PM -0700, Dylan Martin wrote:>D''oh! My mistake!! You can run 32 bit HVM guests no problem on a 64 >bit dom0, but you can''t run 32 bit PV guests on a 64 bit dom0.Well, I *have* a 64 bit dom0 with a 32 bit PV guest running. But the kernel is a 64 bit kernel. But since a 64 bit kernel can run 32 bit applications (if the configure options are set), there is no problem. I installed a 32 bit base system (debootstrap --arch i386 etch <target>) as a DomU, compiled a 64 bit kernel in the 64 bit Dom0 (with 32 bit support) and everything works fine. Shade and sweet water! Stephan -- | Stephan Seitz E-Mail: Nur-Ab-Sal@gmx.de | | PGP Public Keys: http://fsing.rootsland.net/~stse/pgp.html | _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> D''oh! My mistake!! You can run 32 bit HVM guests no problem on a 64 > bit dom0, but you can''t run 32 bit PV guests on a 64 bit dom0.Since 3.1 you can run 32-bit PV guests on a 64-bit Xen. You can even run a 32-bit dom0 on a 64-bit Xen and still have 64-bit domUs running. The 32-bit guests have to use PAE, though. 32-bit PV guests on Xen are, from what I''ve heard, better peforming than the 64-bit PV guests...> I really want to make a grid to add to the faq:So now we have: Xen ----------------------------------------- 32bit 32-bit/PAE 64bit Dom0 32-bit yes no no Dom0 32-bit PAE no yes yes Dom0 64-bit no no yes dU 32bit PV yes no no dU 32-bit PAE PV no yes yes dU 64bit PV no no yes dU 32bit HVM yes yes yes dU 32-bit PAE HVM no yes yes dU 64bit HVM no no yes> Does anyone have anything to add/fix about that grid? Especially > if/when you can run a 64bit domU on a 32bit dom0?How''s that? ;-) Cheers, Mark> -Dylan > > > > But I must Install a 32bits PAE kernel in dom0 and setup properly in > > > the config file isn''t it ? > > > When I try to instal 32bits kernel package dom0 tell me that the > > > architecture is incorrect. > > > > > > If I run the 32 bits domU with the dom0 kernel and uname -a return > > > x86_64 inside the domU. > > > In reality I just need to install a 32 bits domU to compile a 32bits > > > kernel for another application. > > > > > > make menuconfig detect that I''m on 64bits architecture so I can''t > > > choose 32bits processor. > > > > > > Mark Williamson escribió: > > >>> I believe you just install the 32 bit OS. It''s like running 32 bit > > >>> linux on a 64bit box. You don''t need to tell the box it''s running a > > >>> 32 bit OS. > > >>> > > >>> Of course, I could be wrong... > > >> > > >> If you install a 32-bit filesystem and boot it using a 32-bit PAE > > >> XenLinux kernel, Xen will recognise that it''s a 32-bit guest and set > > >> things up appropriately. > > >> > > >> Cheers, > > >> Mark > > >> > > >>> -Dylan > > >>> > > >>>> Hello, > > >>>> > > >>>> Does anyone know which is the setup to run paravirtualized domu > > >>>> 32bits inside a dom0 64bits... > > >>>> I''ve got Xen 3.1 > > >>>> > > >>>> Do I must add something to the config file ? > > >>>> Do I should install 32bits kernel ? > > >>>> > > >>>> Regards > > >>>> > > >>>> > > >>>> _______________________________________________ > > >>>> Xen-users mailing list > > >>>> Xen-users@lists.xensource.com > > >>>> http://lists.xensource.com/xen-users > > >>> > > >>> _______________________________________________ > > >>> Xen-users mailing list > > >>> Xen-users@lists.xensource.com > > >>> http://lists.xensource.com/xen-users > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- Dave: Just a question. What use is a unicyle with no seat? And no pedals! Mark: To answer a question with a question: What use is a skateboard? Dave: Skateboards have wheels. Mark: My wheel has a wheel! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, here another Matrix, hopefully correct, which includes PAE. Hypervisor dom0 domU(PV) domU(HVM) 32-bit 32-bit 32-bit 32-bit 32-bit PAE 32-bit PAE 32-bit PAE 32,- or 32-bit PAE 64-bit 64-bit 64-bit or 32-bit PAE* 32-, 32-PAE or 64-bit Jurgen -------- Original-Nachricht -------- Datum: Tue, 31 Jul 2007 12:18:20 -0700 Von: Dylan Martin <dmartin@sccd.ctc.edu> An: "Sébastien CRAMATTE" <s.cramatte@wanadoo.fr> CC: xen-users@lists.xensource.com Betreff: Re: [Xen-users] PV 32-in-64 ? Howto ?> D''oh! My mistake!! You can run 32 bit HVM guests no problem on a 64 > bit dom0, but you can''t run 32 bit PV guests on a 64 bit dom0. > > I really want to make a grid to add to the faq: > > Dom0 > 32bit 64bit > D 32bit PV yes no > o 64bit PV ?? yes > m 32bit HVM yes yes > U 64bit HVM ?? yes > > Does anyone have anything to add/fix about that grid? Especially > if/when you can run a 64bit domU on a 32bit dom0? > > -Dylan > > > > But I must Install a 32bits PAE kernel in dom0 and setup properly in > > > the config file isn''t it ? > > > When I try to instal 32bits kernel package dom0 tell me that the > > > architecture is incorrect. > > > > > > If I run the 32 bits domU with the dom0 kernel and uname -a return > > > x86_64 inside the domU. > > > In reality I just need to install a 32 bits domU to compile a 32bits > > > kernel for another application. > > > > > > make menuconfig detect that I''m on 64bits architecture so I can''t > > > choose 32bits processor. > > > > > > > > > > > > > > > Mark Williamson escribió: > > > > > >>> I believe you just install the 32 bit OS. It''s like running 32 bit > > >>> linux on a 64bit box. You don''t need to tell the box it''s running a > > >>> 32 bit OS. > > >>> > > >>> Of course, I could be wrong... > > >>> > > >>> > > >> If you install a 32-bit filesystem and boot it using a 32-bit PAE > XenLinux > > >> kernel, Xen will recognise that it''s a 32-bit guest and set things up > > >> appropriately. > > >> > > >> Cheers, > > >> Mark > > >> > > >> > > >> > > >>> -Dylan > > >>> > > >>> > > >>> > > >>>> Hello, > > >>>> > > >>>> Does anyone know which is the setup to run paravirtualized domu > 32bits > > >>>> inside a dom0 64bits... > > >>>> I''ve got Xen 3.1 > > >>>> > > >>>> Do I must add something to the config file ? > > >>>> Do I should install 32bits kernel ? > > >>>> > > >>>> Regards > > >>>> > > >>>> > > >>>> _______________________________________________ > > >>>> Xen-users mailing list > > >>>> Xen-users@lists.xensource.com > > >>>> http://lists.xensource.com/xen-users > > >>>> > > >>>> > > >>> _______________________________________________ > > >>> Xen-users mailing list > > >>> Xen-users@lists.xensource.com > > >>> http://lists.xensource.com/xen-users > > >>> > > >>> > > >> > > >> > > >> > > > > > > > > > > > > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- Dipl.-Inform. (Univ.) Jürgen Peter Festnetz: 030 851 76 76 Mobil: 0151 17 40 50 69 Profil http://www.gulp.de/profil/diplinform.html _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 7/31/07, Stephan Seitz <nur-ab-sal@gmx.de> wrote:> Well, I *have* a 64 bit dom0 with a 32 bit PV guest running. But the > kernel is a 64 bit kernel. But since a 64 bit kernel can run 32 bit > applications (if the configure options are set), there is no problem. > > I installed a 32 bit base system (debootstrap --arch i386 etch <target>) > as a DomU, compiled a 64 bit kernel in the 64 bit Dom0 (with 32 bit > support) and everything works fine.How does that compare to 32bit full virtualized domU running under 64bit dom0? There must be some perfomance loss because of the 32bit emulation with 64bit kernel... I cannot make my 32bit centos5 dom0 kernel to see all memory in my machine for some reason, so I''m thinking all these other options as I need a 32bit domU. Your option seems interesting as I would not have to ditch the centos rpm packaged xen. Do you know if the redhat/centos xen kernel has 32bit emulation enabled? Regards, Peter _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users