The first release of the kvm kernel module for the upcoming 2.6.33 kernel has been published. Notable features included with this release are support for Xen PV on HVM support and improved kernel context switching speed. Some features are conditionally disabled for kernel versions prior to 2.6.33 due to bugs but which should not most users. To install this kernel module, simply run configure then make and make install. Below shows the changelog for this latest release.

Major KVM changes since kvm-kmod-2.6.32.7:

• improved kernel context switching speed
• better interoperation with other users of virtualization extensions
• improved irq scaling
• nested SVM improvements
• improved cpufreq integration
• spin loop detection on newer hardware
• adjustable paravirtual clock
• Xen PV-on-HVM guest support
• paravitual MMU is no longer advertised
• further improvements of x86 emulator

kvm-kmod changes:

• Drop workaround for !CONFIG_PREEMPT_NOTIFIERS for >= 2.6.33 (due to technical conflict, but upcoming distro kernels are likely shipping with CONFIG_KVM=m which enables them)
• Disable ioeventfd and irqfd for host kernels < 2.6.33 (no users expected + there is an unfixable race in older kernels)
   

You can find the official announcement at the following link

http://www.mail-archive.com/kvm@vger.kernel.org/msg28016.html

You can download this latest release at the following link

https://sourceforge.net/projects/kvm/files/kvm-kmod/2.6.33-rc6/kvm-kmod-2.6.33-rc6.tar.bz2/download