Re: [Xen-users] Accessing new extra memory

["Jeff Lane" <sundowner225@xxxxxxxxx>]

On 6/27/07, Steven Timm <timm@xxxxxxxx> wrote:
> Hi--I am currently running i386 version of xen 3.0.2
> [root@fermigrid0 ~]# uname -a
> Linux fermigrid0.fnal.gov 2.6.16-xen3_86.1_rhel4.1 #1 SMP Thu Apr 13
> 06:52:14 PDT 2006 i686 i686 i386 GNU/Linux
> Is there something in this kernel that limits us to only 4GB of RAM?
> If so, what is the way around it? I can upgrade if necessary.
Yes, and that something is called PAE.  IIRC, standard 32 bit kernels
only support up to 4GB, and you need PAE enabled to reach up to 16GB
on a 32bit system.

Your uname looks like you compiled that kernel yourself.  I would
suggest recompiling it and make sure PAE is enabled (if that version
even supports PAE) or use the PAE enabled kernel from the distro you
are using.

Sorry, but that's all I can tell you.  I use SLES and RHEL for my Xen
testing, and they both have PAE enabled kernels by default, so I
really haven't had to deal with this for some time now.

Cheers
Jeff

--
------------------> Jeffrey Lane - W4KDH <-------------------
                     www.jefflane.org
               Another cog in the great
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