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