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Re: [Xen-users] Xen pae and 32G memory

To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Xen pae and 32G memory
From: "Jason Douglas" <JDOUGLAS@xxxxxxxxxx>
Date: Thu, 31 Jan 2008 16:37:51 -0700
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I am 99% sure that the 32 (PAE) xen hypervisor has a hard-coded limit of 16 GB 
of RAM.  To be clear, that's a theoretical limit (much like 32 non-pae has a 
4GB limit) so you'll never get the full 16 GB even.  The only way to get access 
to all 32 GB is to run the 64-bit hypervisor.  Hope that helps.

Jason

>>> On 12/19/2007 at 1:45 AM, in message <4768DA2F.7070708@xxxxxxxxxxxxxx>,
Pierre-Henri Baraffe <pierre-henri.baraffe@xxxxxxxxxxxxxx> wrote:
> Hello,
> 
> I have a problem with a new install of xen.
> 
> I work on a Dell poweredge 2950, bi xeon Quadcore ang 32G of memory.
> The domain0 run on a gentoo 32 Bits.
> I use xen 3.1.2 with pae
> xen kernel : 2.6.20
> 
> So when i boot on a normal kernel, i see all of my memory. But when i 
> boot on the xen kernel, i have only 15G memory available.
> I try to force the size memory in the boot options in grub (mem=32G) but 
> that don't work.
> I search on the web to solve the problem but i find nothing.
> 
> So if anyone have an idea to help me ?
> 
> Thanks
> 
> phb
> 
> 
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