On 1/10/08, D. Hageman <dhageman@dracken.com> wrote:

Xen was merged into the mainstream kernel last July(ish).

Xen as a guest support is mainline but for i386 only (useless on modern hardware in a datacenter) with 2.6.23 being the first release of this. The hypervisor stuff is still thoroughly intrusive and unlikely to go in any time soon.

If the distro you use comes with Xen and management tools for Xen then
that is probably the best option.

All the distros with Xen hosting support are providing special kernels that have the giant patch sets applied to them.