Some of the news coming out of the beta version of Red Hat Enterprise Linux (RHEL) 5.4 is its full support for the KVM hypervisor and support for a range of guest operating systems such as RHEL (versions 3-5) and Microsoft Windows (XP, Server 2003, and Server 2008). Both 32- and 64-bit guest operating systems run without modification. And paravirtualized disk and network drivers are going to be provided to enhance I/O performance. However, KVM does require processors with virtualization technology such as Intel-VT and AMD-V to be present.
In addition, all libvirt based tools such as virsh, virt-install, and virt-manager will support KVM. And although still in Technology Preview, the KVM hypervisor can run in conjunction with cluster suite which has been upgraded to enable automatic hypervisor detection.
Red Hat still has another two months before it has to tell its full KVM virtualization story, but for now you can find out more about RHEL 5.4 beta via the release notes.
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