WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] more than 16 GB in a 32 Bit dom0

On Tue, 2011-02-08 at 11:30 +0000, Daniel Bauer wrote:
> Hi Ian,
> 
> From: "Ian Campbell"
> > On Tue, 2011-02-08 at 10:42 +0000, Daniel Bauer wrote:
> >> From: "Pasi Kärkkäinen"
> >> > On Tue, Feb 08, 2011 at 08:27:02AM +0100, Daniel Bauer wrote:
> >> >> I've read in many posts, that XEN limits the 32 bit PAE kernel to 
> >> >> 16
> >> >> GB
> >> >> RAM, but I don't find were to enable more. Starting linux without 
> >> >> XEN
> >> >> shows the whole memory. Is there still no solution?
> >> >>
> >> >> I don't have the possibility to upgrade the server to 64 bit.
> >> >>
> >> >
> >> > You can run 64bit hypervisor (xen.gz) with a 32bit PAE dom0 Linux
> >> > kernel.
> >> > Maybe that's an option for you..
> >>
> >> if it works, why not! But what are the issues about this solution?
> >
> > None really.
> >
> > It's certainly preferable to run a 64 bit hypervisor whenever possible
> > but running a 32 bit domain 0 is a very reasonable configuration.
> >
> > It's the default for XCP and XenServer for example and works quite 
> > well
> > there.
> >
> >> > That allows you to use all the available memory for VMs, and 
> >> > dedicate
> >> > some memory (say, 1GB) for a 32bit dom0.
> >
> > It also allows you to run a mixture of 32 and 64 bit guests.
> 
> I just tried it now, but the system doesn't boot. The reason why I can't 
> upgrade to 64 bit is, that the server is only a 32 bit box (HP ProLiant 
> DL760 G2, 8 x 3 GHz Xeon, 64 GB RAM). IMHO I need a 64 Bit CPU to run 
> the 64 bit xen.gz, or?

Er, yeah, you need a 64 bit processor.

> 
> Thanks
> Daniel 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel