Re: [gentoo-user] installing Gentoo as a xen guest

["J. Roeleveld" <joost@antarean.org>]

On Thursday, September 24, 2015 09:45:09 AM Rich Freeman wrote:
> On Thu, Sep 24, 2015 at 9:22 AM, J. Roeleveld <joost@antarean.org> wrote:
> > For PV, grub is actually more work to get working. There is a config
> > option for the commandline. I will send one of mine later today.

Please see email from Håkon Alstadheim for the example.

> I can believe that.  My only experience is with Amazon, which doesn't
> give you any control over the host xen.  It just runs grub with a
> grub.cfg you provide if you want to run your own kernel (unless that
> has changed).

Sounds like pvgrub. I never looked into setting that up, afaiui, it mounts the 
guest filesystem, grabs the grub.cfg, grabs the kernel listed there, umounts, 
then boots the guest.

> > Does EC2 actually provide PV guests?
> > With PV, the guest knows it's a guest and communicates with Xen. Non-PV
> > has an emulation layer (qemu) running on the host that hides the
> > virtualisation from the guest. Special drivers on the guest can help with
> > performance, but isn't necessary to get it to work.
> I believe that EC2 ONLY provides PV guests.  I don't believe it will
> do full virtualization for linux guests.  They do provide windows
> guests, and I'm not sure of the details of how that is done.  If you
> want to run a linux guest you either use one of their kernels, or you
> can run your own as long as it supports Xen PV.

Windows guests will run in PVH mode as I doubt Microsoft has a PV-enabled 
kernel available for Amazon :)

--
Joost