This release was cooking for far too long, and as a result there are
plenty of changes. Windows XP SMP performance is much improved for AMD
hosts or Intel hosts without FlexPriority (performance with FlexPriority
should already be very good). There are many smp and timekeeping fixes
included. mmio coalescing and async virtio-block should improve mmio
performance. SLES 10 is supported as host.
Have fun reading the changelog. There _will_ be a test.
Changes from kvm-69:
- improve virtio net performance (Anthony Liguori)
- enable pci slot identification for OS X (Alexander Graf)
- fix guest reset (Jan Kiszka)
- code cleanups (Jan Kiszka)
- fix userspace compilation on older kernels (Chris Wright)
- support running on 2.6.16 hosts (Andrea Arcangeli)
- including SLES 10
- generate mptable even for uniprocessor guests
- helps esx get further along
- fix corrupted breakpoints (Jerone Young)
- on_vcpu() mechanism to execute a function on a vcpu thread
- fix 'info registers' monitor command
- fix vcpu register access livelock when a vcpu is spinning
- fix stopping on debug events (Jan Kiszka)
- fix livelocks in guest debugger (Jan Kiszka)
- add mtrr support
- helps esx limp a bit more
- fix incorrect pmtimer overflow interrupt generation
- add 'push imm' instruction to testsuite
- fix on_vcpu() during guest debug (Jan Kiszka)
- document boot option for drive flag (Carlo Marcelo Arenas Belon)
- coalesced mmio support (Laurent Vivier)
- should speed up some workloads
- allow kprobes to coexist with preempt notifier emulation (Andrea
Arcangeli)
- allow virtio devices to reset themselves (Marcelo Tosatti)
- asynchronous virtio storage device (Marcelo Tosatti)
- should improve performance
- fix deadlock waiting for I/O completion
- merge qemu-svn
- remove dependency on gcc 3
- vnc client segfault fix
- fix vnc problems on resize
- qemu-nbd tool
- fix libkvm memory slot destruction api (Ben-Ami Yassour)
- enable tpr optimization for smp
- should drastically speed up Windows XP SMP guests
- big-endian kvmtrace support (Li Tan)
- remove unneeded variable (Glauber Costa)
- convert acpi tables to use the C preprocessor for less repetition
- external module compatibility for NMI (Alexander Graf)
- fix live migration with new on_vcpu() calls
- fix false flooding when a pte points to a page table
- improves 2.4 pae guests with CONFIG_HIGHPTE
- enable NMI support on Intel (Sheng Yang)
- fix zero extension during mmio on ia64 (Jes Sorensen)
- fix hypercall return value on AMD
- fixes running CONFIG_KVM_GUEST guests
- s390: use yield() instead of schedule() (Christian Borntraeger)
- s390: fix locking order problem (Christian Borntraeger)
- s390: handle machine checks while guest is running (Christian Borntraeger)
- s390: fix interrupt delivery (Carsen Otte)
- s390: send program check on access error (Carsen Otte)
- s390: fix race when idling (Carsen Otte)
- ppc: add lwzx/stwz instruction emulation (Hollis Blanchard)
- ppc: code cleanup (Hollis Blanchard)
- ppc: report bad gfns (Hollis Blanchard)
- optimize pio path slightly
- improve segment register ordering
- migrate pit timer on vcpu migration (Marcelo Tosatti)
- emulate jmp far instruction (Guillaume Thouvenin)
- emulate mov reg, imm instruction (Guillaume Thouvenin)
- emulate mov reg, sreg instruction (Guillaume Thouvenin)
- optimize mmu page prefetching
- emulate push imm instruction
- avoid mmu page prefetching on AMD
- allow VMware Server to take over vmx when unloading the module (Eli
Collins)
- avoid spinning during large guest teardown
- fix ioapic interrupt sharing (Marcelo Tosatti)
- fix crash on resume from suspend to ram (Andrea Arcangeli)
- fix race between timer migration and vcpu migration (Marcelo Tosatti)
- close timer injection race when entering guest mode (Marcelo Tosatti)
- fix reverse map corruption with large pages (Marcelo Tosatti)
- fix large page pte updates on non-pae guests (Marcelo Tosatti)
- avoid timer injection if timer already pending (Marcelo Tosatti)
- avoid linear rip calculation if not reporting (Glauber Costa)
- fix host oops on guest userspace access to guest page table
- improve emulation failure reporting
- emulate nop and xchg reg, acc (Mohammed Gamal)
- handle undecoded rex.b when r/m = 5
- simplify r/m and sib decoding
- simplify relative rip decoding
- avoid segment adjust for lea instruction
Notes:
If you use the modules bundled with kvm-70, you can use any version
of Linux from 2.6.17 upwards. You may also use kvm-70 userspace with
the kvm modules provided by Linux 2.6.22 or above. Some features may
only be available in newer releases.
http://kvm.qumranet.com
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