Re: [Xen-users] Basic Question

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> If I use the create a config in /etc/xen and refer to say kernel
> ="/boot/vmlinuz-2.6.11-1.1369_FC4xenU" where do I add extra flags
> during bootup, i.e selinux=0. Do I add it to the end of this line
> like:
>
> kernel ="/boot/vmlinuz-2.6.11-1.1369_FC4xenU selinux=0" or do I need
> to add to a grub.conf file in the domU?

IIRC, this sort of thing should go in the "args" variable of the config file - 
this gets appended to the kernel command line when the domain is started.

kernel= is just the path to the kernel within the dom0 ("host") filesystem.

You don't need a grub.conf in the guest but in the -unstable tree you can 
create one in the guest filesystem and get a bootloader prompt when you start 
the domain.  In this case, the guest kernel will need to be *inside* the 
guest filesystem for the bootloader to find it.

I'm not sure but there may be some config options required to enable the guest 
bootloader.

Cheers,
Mark

> Thanks
> Shaz
>
> On 6/15/05, Mark Williamson <mark.williamson@xxxxxxxxxxxx> wrote:
> > > Whats the difference between the xenU and xen0 kernel. Is there a
> > > technical difference, does this relate to how xen works? Can some one
> > > please give me a little summary of how it works.
> >
> > The xen0 kernel contains all the drivers required to run in a domU
> > (unprivileged guest) *and* all the drivers required to run in dom0 (i.e.
> > privileged command interface, device drivers for the real hardware,
> > etc.). This'll run in *any* domain.
> >
> > The xenU kernel contains only the drivers required to run in a domU - no
> > privileged command interface, no drivers for real hardware.  The only
> > practical difference is that this kernel is a few hundred kilobytes
> > smaller but can only run in domUs.
> >
> > HTH,
> > Mark

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