[Fedora-xen] More then 16GB with FC6 or FC7?
Gerd Hoffmann
kraxel at redhat.com
Wed Jun 27 14:48:22 UTC 2007
Daniel P. Berrange wrote:
> On Wed, Jun 27, 2007 at 05:00:13AM -0400, thewird wrote:
>> Is there any way to make the xen kernel see more then
>> 16GB of ram when its installed on a 32bit OS (either
>> FC6 or FC7)?
>
> No it is an architectural limitation of Xen that 32-bit is limited to
> a maximum of 16 GB, even with PAE.
Well, there is one from the dirty tricks department: Install 32bit fc7,
pull 64bit xen kernel from the 64bit kernel-xen rpm, boot that with the
32bit linux kernel.
Mixing 32bit and 64bit guests isn't going to work for the time being
(needs a kernel update). But with the 64bit hypervisor underneath the
system should be able use all memory, even with 32bit guests only.
cheers,
Gerd
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