kernel-PAE or xen or both?

[Robert Locke]

On Wed, 2008-03-05 at 12:51 +0100, Maurizio Rottin wrote:
<snip>
> Then i'm wandering if the problem can be memory usage, since to use
> more that 4GB i should use kernel_PAE instead.
> Maybe, if kernel-xen is not compiled against PAE, the server does not
> know how to use the last GB...just supposing...
> But can i have kernel-xen combined with PAE?!? i don't know...

I don't know about what issue you are facing but can give you an FYI.
kernel-xen, or perhaps, more specifically, xen is PAE aware.  I think it
may even "require" the CPU flag to be there.  So you should be able to
utilize the full 5GB of the machine across the VM's when using
kernel-xen for each of them.  If it is specifically blowing up on the
additional RAM, it sounds like perhaps a bug.  You might want to try
subscribing to the fedora-xen list to get some help there.

I am pretty sure that Dom0 will require that you run kernel-xen, but if
you want to run kernel-PAE in any of the other DomU's, you need to turn
on "full" virtualization for that DomU. If you want to run "para"
virtualized you need to be running kernel-xen in the DomU.

Hope that helps a little at least,

--Rob