The Kernel-based Virtual Machine (KVM) updates for
Linux 3.9 are now known.
The KVM updates for the Linux 3.9 kernel merge window includes initial support for APICv hardware acceleration, x86 real mode emulation fixes, stronger memory slot interface restrictions, improved handling of large page faults on shadow, and other fixes.
More details on these Linux KVM changes can be found from
the mailing list pull request.