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Re: [Xen-devel] not enough memory for DOM0 memory reservation

To: Fernanda Barbosa Coelho <fbarbosa@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] not enough memory for DOM0 memory reservation
From: Derrik Pates <demon@xxxxxxxxxxxxx>
Date: Tue, 18 Jan 2005 15:32:41 -0500
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Fernanda Barbosa Coelho wrote:
I have xen-2.0.1 in a PentiumIII with 131079 kb of RAM, I configed my system by following the suggestions.
When I boot xen0, the following error msg printed on the screen:

(xen) not enough memory for DOM0 memory reservation


My grub configuration look like this:

title Xen 2.0.1 / XenLinux 2.6.9
      kernel /boot/xen.gz dom0_mem=131072 console=vga
      module /boot/vmlinuz-2.6.9-xen0 root=/dev/hda3 ro console=tty0

You're telling Xen to reserve nearly as much memory as the entire system has; you have to give it a slice of system memory significantly smaller than that. Keep in mind that Xen has to reserve ~32 MB for itself, and you still need to have memory available to assign to other domains. You'll probably have a hard time making use of Xen with only 128 MB of memory in your system. Might be time for an upgrade.

--
Derrik Pates
demon@xxxxxxxxxxxxx


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