Today kvm-66 was released adding support for ia64 architecture. A sizeable number of bug fixes are also included for x86 which will add stability and performance. Like the s390 support, support for the ia64 is provided only in the git tree and not in the tarball download. Below is a copy of the changelog.

Changes from kvm-65:

- adjust external module for 2.6.25 module locations (Anthony Liguori)
- fix userspace compilation failure without kernel pit (Joerg Roedel)
- kvmtrace performance monitoring mechanism (Eric Liu)
- stop all vcpus before saving their state (Marcelo Tosatti)
- fixes smp live migration
- save/restore kernel apicbase (Marcelo Tosatti)
- block SIG_IPI signals (Marcelo Tosatti)
- smsw mem16, lmsw mem16 emulation and unit tests
- fix compile warnings (Jerone Young)
- fix reset with iothread
- ia64 architecture support (Xiantao Zhang, Anthony Xu)
- don't assume guest pages are backed by a 'struct page' (Anthony Liguori)
- needed for pci device assignment
- register kvm's ioctl range
- fix hardware task switching buglet (Izik Eidus)
- fix mce handling on AMD (Joerg Roedel)
- do hardware task switching in hardware when NPT is enabled (Joerg Roedel)
- fix timer race waking up a halted vcpu with smp (Marcelo Tosatti)
- fix irq race leading to irqs delivery delays (Marcelo Tosatti)
- fix triple fault handling on AMD
- fix lea instruction emulation

You can download a copy of kvm 66 here