Most notable is that an fpu leak on AMD has been plugged. Currently
this has some performance impact; next release should restore
performance while maintaining correctness.
Changes from kvm-52:
- testsuite: exit on end of test
- batch mode for kvm_stat script
- compile fixes (Carlo Marcelo Arenas Belon, Joe Perches)
- portability (Jerone Young, Zhang Xiantao)
- disable lazy fpu on AMD (Amit Shah)
- should fix instability on AMD
- will cause performance regression, fix in progress
- x86 emulator: fix 'push r/m' emulation (Amit Shah)
- register use reduction in vmx guest entry
- infrastructure for per-vm stats
- extends existing per-vcpu stats
- add mmu, state switch, emulation statistics
- use copy_{to,from}_user to access guest memory (Izik Eidus)
- simplify access to guest page tables (Izik Eidus)
- fix entry to real mode with segment bases beyond 1MB (Jan Kiszka)
- finally kill last use of cr2 in emulator (Sheng Yang)
Notes:
If you use the modules bundled with kvm-53, you can use any version
of Linux from 2.6.9 upwards.
If you use the modules bundled with Linux 2.6.20, you need to use
kvm-12.
If you use the modules bundled with Linux 2.6.21, you need to use
kvm-17.
Modules from Linux 2.6.22 and up will work with any kvm version from
kvm-22. Some features may only be available in newer releases.
For best performance, use Linux 2.6.23-rc2 or later as the host.
http://kvm.qumranet.com
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