[Pkg-xen-devel] Re: Re: Bug#368531: Debian Xen kernel-image?

[Matthew Palmer]

On Wed, May 24, 2006 at 08:53:20PM -0700, Jeremy T. Bouse wrote:
> Matthew Palmer wrote:
> >On Wed, May 24, 2006 at 11:50:55PM +0200, Stephane Bortzmeyer wrote:
> >  
> >>So, I tried in grub:
> >>
> >>title           XEN with Debian GNU/Linux, kernel 2.6 Debian
> >>root            (hd0,0)
> >>kernel          /boot/xen-3.0-i386.gz dom0_mem=32M
> >>    
> >
> >You'll want to give your dom0 more than that.
>    As far as I understood Xen3 doesn't even really need the dom0_mem 
> option on the kernel line as dom0 gets all mem not assigned to domU's. 

I have noticed that, when I'm getting low on memory, the dom0 gets a bit of
it's memory (down to 192MB) taken away from it.  So I guess it's probably
better to not use the dom0_mem option, at least if you're running Xen on a
workstation.

For myself, I'm still a bit freaked out by the idea of having memory just
disappear from a running machine, so I tend to avoid the balloon stuff if I
can.

> Myself I only have "kernel <dom0 kernel image>" in my grub menu.lst.

I suspect you meant "kernel <hypervisor image>" there.

- Matt