Today kvm-71 was released featuring booting of linux 2.6.9 guests, another merge with qemu svn and virtio-blk performance improvements. Lots of other small bug fixes are also included in this release. The two notable features added with the qemu svn merge are pulseaudio drivers and nbd client/server.

The official changelog from development includes:

- fix virtio isr clearing (Laurent Vivier)
- kvmtrace ppc userspace support (Jerone Young)
- avoid fragmenting virtio-blk transfers (Anthony Liguori, Mark McLoughlin)
- ia64 build fixes (Anthony Xu)
- remove unnecessary virtio-net printout (Marcelo Tosatti)
- remove configure warning about gcc 3 (Carlo Marcelo Arenas Belon)
- rhel 5.2/centos 5.2 host support
- merge qemu-svn
- adds pulseaudio driver
- nbd client/server
- disable cpu emulation by default on ia64 (Xiantao Zhang)
- place test support files in a library (Jerone Young)
- fix qemu monitor screendump
- fix lost interrupt when changing a device irq
- fixes devices going away when disabled and enabled several times
- fix oops on shutdown freeing coalesced mmio page (Akio Takebe)
- optimize segment register access in emulator
- allow run-time enabling of mmu debug
- fix host msr corruption when host preempt is enabled
- fix kvmclock (Gerd Hoffmann)
- rename badly named msrs (Sheng Yang)
- fix incorrect usage of vmcs_config when using ept (Sheng Yang)
- emulate performance counter msrs on Intel (Chris Lalancette)
- allows Linux 2.6.9 guests to boot
- optimize vapic locking when disabled (Marcelo Tosatti)
- don't allocate dirty bitmap for s390 (Catsten Otte)
- fix memory leak on guest exit (Carsten Otte)
- update s390 guest base and limit (Christian Borntraeger)
- optimize access to guest registers (Marcelo Tosatti)
- add memory clobber to hypercalls (Anthony Liguori)
- fixes booting guests compiled with gcc 4.3
- fix ioapic hang on heavy load (Mark McLoughlin)
- move kvmtrace definitions to common header (Hollis Blanchard)
- fix suspend/resume on AMD (Joerg Roedel)
- make some functions static (Adrian Bunk)
- fix shrinker locking (Marcelo Tosatti)
- fix ept tlb flush (Sheng Yang)
- fix signal handling on uninitialized vcpus
- fix hlt instruction in real mode (Mohammed Gamal)
- check pic irq range (Ben-Ami Yassour)
- add function to inject irqs into guests (Amit Shah)

kvm-71 can be downloaded here