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

["Daniel Bauer" <mlist@xxxxxxxxxxx>]

From: "Ian Campbell"
> On Tue, 2011-02-08 at 11:32 +0000, Daniel Bauer wrote:
> > From: "Ian Campbell"
> > > On Tue, 2011-02-08 at 10:42 +0000, Daniel Bauer wrote:
> > >> From: "Keir Fraser"
> > >> > On 08/02/2011 07:27, "Daniel Bauer" <mlist@xxxxxxxxxxx> 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.
> > >> >
> > >> > Then no.
> > >>
> > >> maybe a silly question, but who sets this limit? IMHO xen, because 
> > >> a
> > >> "normal" bigmem kernel accepts upto 64 GB RAM. Is there really no
> > >> switch
> > >> to increase the RAM under a 32 bit kernel?
> > >
> > > The limitation is due to the 32 bit hypervisor, not the kernel.
> >
> > I know, but I don't find the switch to configure more RAM than 16 GB. 
> > I
> > thought that XEN limits it to 16 GB and I could change it and 
> > recompile
> > everything.
> There is no switch, 16GB is a fundamental limitation of the 32 bit
> hypervisor.
ok, thanks a lot for thinking about my problem.

Have a nice day
Daniel 

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