Re: [Xen-users] 4GB memory installed, 3.5GB shown (Xen 3.2 + PAE)

[Wouter de Geus <benv-xensource.com@xxxxxxxxxxxxx>]

Oh, I forgot to mention that ;)

My first try I used a non-PAE 32 bit kernel.
When I noticed the missing memory I figured I needed PAE.

So now I'm using a 32 bit PAE enabled kernel. (and obviously I rebuilt Xen too).

Wouter.

* --[ UxBoD ]-- <uxbod@xxxxxxxxxxxx> [2008-03-11 16:48:35 +0000]:

> 32bit or 64bit Dom0 O/S ?
> 
> Regards,
> 
> -- 
> --[ UxBoD ]--
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> 
> ----- "Wouter de Geus" <benv-xensource.com@xxxxxxxxxxxxx> wrote:
> 
> > Hello,
> > 
> > (second attempt in sending this, messed up my from header ;))
> > 
> > I have recently upgraded one of my machines, both in hardware and Xen
> > version.
> > In the old situation it had 3GB of memory and Xen 3.1, worked like a
> > charm.
> > After upgrading it has 4GB of memory and Xen 3.2.
> > 
> > However, only 3.5GB of the memory is available to xen.
> > (xm info gives
> >   total_memory           : 3573 )
> > 
> > I've read about the grub 0.97 bug, so I patched it.
> > However, that has absolutely no effect.
> > 
> > Grub output:
> > grub> displaymem 
> >  EISA Memory BIOS Interface is present
> >  Address Map BIOS Interface is present
> >  Lower memory: 640K, Upper memory (to first chipset hole): 3072K
> >  [Address Range Descriptor entries immediately follow (values are
> > 64-bit)]
> >    Usable RAM:  Base Address:  0x0 X 4GB + 0x0,
> >       Length:   0x0 X 4GB + 0xa0000 bytes
> >    Reserved:  Base Address:  0x0 X 4GB + 0xa0000,
> >       Length:   0x0 X 4GB + 0x60000 bytes
> >    Usable RAM:  Base Address:  0x0 X 4GB + 0x100000,
> >       Length:   0x0 X 4GB + 0x300000 bytes
> 
> -- 
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> 

-- 
BenV / JuNe

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