ChangeLog

version 44 [23 sep 2007]

• fix smp guest boot
• fix IDE emulation bug with newer guest kernels (S.Çağlar Onur)
• support VMware server as guest (Ryan Harper)
• fix smp race in shadow code (Izik Eidus)
• allow guest page faults to bypass kvm on Intel (performance boost)

version 43 [21 sep 2007]

• fix ioapic edge-triggered interrupt handling

version 42 [20 sep 2007]

• important host oops fix
• document -no-kvm-irqchip option in qemu help message (Carlo Marcelo Arenas Belon)
• acpi bios: export pci irqs as active high
• avoid redelivery of edge-triggered ioapic interrupts if already in service
• implement ioapic polarity
• fix x86 emulator merge problems (Nitin A Kamble, Laurent Vivier)
• fix x86 repne decoding (fixes OpenBSD boot regression) (Laurent Vivier)
• install kvm_para.h (Gerd Hoffman)

version 41 [19 sep 2007]

• refactor hypercall infrastructure for simplicity and better smp support (Anthony Liguori)
• fix ioapic level triggered interrupt redelivers (solves networking stalls)
• reduce efer reloads with 32-bit guests; minor performance improvement
• split x86 emulator decode and execute stages (Laurent Vivier)
• fix pic interrupt delivery (solves time going double speed on x86_64 Linux guests) (Qing He)
• adaptive live migration bandwidth limits (Uri Lublin)

version 40 [16 sep 2007]

• fix guest reboot (most scenarios)
• further x86 emulator work (Nitin A Kamble)
• compile fixes for older kernels
• make the external module work again

version 39 [12 sep 2007]

• provide div64_64() for older kernels
• improve emulation failure reporting
• more x86 emulator work (push imm8, pushf, call near) (Nitin A Kamble)
• don't use TPR shadow on i386 (Sheng Yang)

version 38 [12 sep 2007]

• fix fpu indication for Solaris (Amit Shah)
• Avoid GFP_NOWAIT allocation in mmu
• Fix runtime smp_processor_id() warning in lapic
• Move vcpu loop into subarch independent loop
• Rename kvm_arch_ops to kvm_x86_ops (Christian Ehrhardt)
• Fix missing "genapic" on i386 (Eddie Dong)
• Fix lapic hrtimer migration (Qing He)
• Fix lapic 64-bit division on i386 (Jindrich Makovicka)
• Simplify memory allocation ioctl (Laurent vivier)
• Keep control register shadows in sync (Rusty Russell)
• Retire invlpg (Rusty Russell)
• Expose get_cs_db_l_bits for kvm-lite (Rusty Russell)
• Fix network boot (Anthony Liguori)
• Round up memory in libkvm (Anthony Liguori)
• Fix option ROM loading (Anthony Liguori)
• Revert FACP ACPI change for Vista
• Fix segfault with -no-kvm
• lapic hrtimer external module compatibility (Qing He, Avi Kivity)
• improved (still imprefect) reboot
• better bios smp detection

version 37 [9 sep 2007]

• in-kernel lapic, ioapic, and pic (Eddie Dong, Qing He, Sheng Yang, Gregory Haskins, Dor Laor, Avi Kivity)
• split segment reload (vmx microoptimization) (Laurent Vivier)
• fix vga redraw regression (Izik Eidus)
• fix testsuite compilation with older assemblers (H. Peter Anvin)

version 36 [22 aug 2007]

• support guests with more than 2GB of RAM on 64-bit hosts (Izik Eidus)
• fix rare host oops on guest context switch
• avoid smp_call_function_single() warning on suspend/resume
• more real mode emulator work (Nitin A Kamble)
• Windows x64 support (Sheng Yang)
• close minor signal handling race
• carry bios in kvm source tree for easier maintenance
• fix -std-vga (Uri Lublin)
• advertise kvm in vnc window title (Matthew Kent)
• fix Windows SMP guests consuming cpu time when idle (Igor Lvovsky)

version 35 [15 aug 2007]

• fix kvm refusing to load on Core processors (Glauber de Oliveira Costa)
• improve qemu monitor handling CR/LF sequences (Jim Paris)
• fix compile warning in qemu (Luca Tettamanti)

version 34 [13 aug 2007]

• make kvm preemptible
• allow calling sleeping functions in the kvm exit handlers (Shaohua Li)
• this is a first step in getting guest swapping
• fix running kvm on nx-incapable host kernel on nx-capable hardware
• fix more fallback from the x86 emulator writeback changes (Aurelien Jarno, Avi Kivity)
• remove vmx specific code from subarch independent code (Gregory Haskins)
• allocate vcpus as needed (Rusty Russell)
• consolidate x86 emulator guest read/write code (Laurent Vivier)
• cleanup string pio instruction emulation (Laurent Vivier)
• ensure all cpus have the same vmx features (Sheng Yang)
• version string for external module
• disable long mode capability bit on 32-bit kernels
• fix qemu -isapc (Uri Lublin)
• fixes for smp live migration
  • this is still raw
• fix unhandled wrmsr MSR_CSTAR on i386 (Luca Tettamanti)
• some migration fixes (Jim Paris)
• the usual cleanups and minor fixes (various but mostly Rusty)

version 33 [23 jul 2007]

• fix massive performance regression

version 32 [23 jul 2007]

• fix oops with the slub allocator (CONFIG_SLUB)
• fix cmov instruction emulation, trashed by the mmio rmw fix
• fix rare, silent data corruption on writes that cross a page boundary and touch a page table (Aurelien Jarno, Avi Kivity)
• fix race between vm creation and vcpu hotunplug (Rusty Russell)
• fix guest turning on pae with invalid pdptres (Rusty Russell)
• adapt external module to changed kmem_cache_create() api
• allow external module on 2.6.22 i386 nonpae
• fix regression in network throughput caused by guest smp changes (Aurelien Jarno, Avi Kivity)
• live migration updates (Uri Lublin)
• minor cleanups (Nguyen Anh Quynh, Avi Kivity)

version 31 [19 jul 2007]

• a few cleanups that somehow evaded kvm-30 (Jeff Dike, Rusty Russell)
• allow the external module to compile on older kernels.

version 30 [19 jul 2007]

• minor fixes and cleanups (Jeff Dike, Rusty Russell, Avi Kivity)
• kernel pio string write (Eddie Dong)
• guest smp kernel fixes
• rdmsr and wrmsr real mode emulation
• fix real mode shadow pages aliasing nx large page shadows
• enable guest smp in qemu
• fix external module installer
• revert ide enable changes that caused an I/O regression

version 29 [12 jul 2007]

• live migration from 32-bit hosts to 64-bit hosts (Uri Lublin)
• monotonic timestamp counter on Intel
• more real mode support (Nitin A Kamble)
• infrastructure for in-kernel PIC and APIC (Gregory Haskins, Eddie Dong)
• fix read-modify-write to mmio (fixes F7 installer) (Luca Tettamanti)
• fix rebooting a long-running guest
• reliably detect if svm was disabled by bios (Joerg Roedel)
• suspend/resumes fixes (will not work with older kernels)
• fix nx confusion with large pages and real mode
• remove dependency on libuuid
• fix registers access in monitor/gdbstub (Anthony Liguori)
• minor fixes and cleanups (various)

version 28 [10 jun 2007]

• fix host oops on guest context switch
• many code cleanups (Nguyen Anh Quynh, others)
• prepare kernel for guest smp
• update libkvm for guest smp
• update testsuite for guest smp
• emulate hlt in real mode (avoids crash when booting from unformatted disk)
• initialize ata ports for Fedora 7 guests (Luca Tettamanti)

version 27 [3 jun 2007]

• use slab cache for mmu shadow pages
• make shadow pte updates atomic (for guest smp)
• general mmu cleanups

version 26 [27 may 2007]

• implement wbinvd emulation, triggered by Windows Vista
• compile fixes (Markus Rechberger, Avi Kivity)

version 25 [24 may 2007]

• massive performance increase (Eddie Dong)
• regenerate bios from latest bochs sources, hopefully fixing a regression with some guests
• some testsuite work (Anthony Lihuori, Eddie Dong, Avi Kivity)
• minor fixes (various)

version 24 [8 may 2007]

• fix oops loading kvm-intel module on i386 with highmem

version 23 [7 may 2007]

• OpenBSD 4.1 i386 support (Matthew Gregan)
• Fix host and guest crashes on reboot

version 22 [6 may 2007]

• Significant performance improvements (Anthony Liguori, Eddie Dong, Qing He, Avi Kivity)
• Fix longstanding bug: time runs at double speed on x86_64 Linux (Qing He)
• Windows Vista 32-bit support (Qing He, Jun Nakajima)
• Support for kvm abi 10 modules
• Minor updates

version 21 [27 apr 2007]

• fix regression on Core (not Core 2) processors
• performance improvements (Eddie Dong, Anthony Liguori)
• minor fixes

version 20 [24 apr 2007]

• Windows 2000 support
• performance enhancements
• patch against latest kernel tree included in tarball
• fix oops with 32-bit nonpae guests

version 19 [16 apr 2007]

• bug fixes
• memory aliasing api

version 18 [26 mar 2007]

• merged new userspace API
• revert the optimization which killed some 32-bit Linux guests
• reboot support on Intel hosts (AMD are already supported)
• better timekeeping under load (Uri Lublin)
• other minor fixes and cleanups

version 17 [25 mar 2007]

• live migration enhancements (Uri Lublin)
• better/working acpi support
• revert to unhacked qemu bios
• fix some 32-bit nonpae guests (*BSD)
• initial ballooning support
• random fixes

version 16 [7 mar 2007]

• bug fixes (including a nasty one on module load)
• use lanana assigned minor device number for /dev/kvm

version 15 [26 feb 2007]

• live migration with kvm (Uri Lublin)
• based on Anthony Liguori's qemu patches
• new userspace interface (work in progress)
• the usual random fixes

version 14 [19 feb 2007]

• qemu 0.9.0
• too many goodies to list
• kvm can no longer share qemu's bios on Intel hosts due to real mode trouble. use the supplied bios.
• migration now based on Anthony Liguori's live migration patches (Uri Lublin)
  • currently, only non-live migration is supported under kvm
• handle smi on host on AMD hosts (Joerg Roedel)
• random fixes

version 13 [8 feb 2007]

• add dirty page tracking in some corner cases for live migration
• fix lockups on nx-challenged hosts
• host suspend/resume
  • nobody's testing this, so it's probably broken
• host cpu hotplug support
• beginning of paravirt support (Ingo Molnar)
• guest reboot support (Markus Rechberger, Joerg Roedel)
• pio latency reduction (Anthony Liguori)
• stone age kernel compatibility (Markus Rechberger)
• the usual cleanups and stability fixes

version 12 [23 jan 2007]

• More migration work (Uri Lublin)
• savevm/loadvm (and migration) work on AMD (Leonard Norrgard)
• More guest support
• mmu testsuite and fixes
• Windows ACPI install/run support (Dor Laor)
• Fix host reboot on guest reboot on AMD (Joerg Roedel)

version 11 [11 jan 2007]

• stabilization fixes
• vmexit profiling (Ingo Molnar; requires Linux 2.6.20+)

version 10 [7 jan 2007]

• more hypercall work
• cleanup irq handling
• shadow page table caching
• migration fixes
• stabilization fixes

version 9 [31 dec 2006]

• API documentation (James Jacobsson)
• More stabilization fixes (Yoshimi Ichiyanagi, Ingo Molnar, Nguyen Anh Quynh)
• Interactivity improvements (Dor Laor)

version 8 [21 dec 2006]

• msr fixes (Michael Riepe)
• more guest support (Michael Riepe)
• random fixes
• fpu state corruption fix on AMD hosts

version 7 [12 dec 2006]

• prevent loading arch module on wrong hardware
• fix for macbooks
• other minor fixes

version 6 [11 dec 2006]

• AMD 32-bit host support (Anthony Liguori)
• more migration work
• stabilization
• improved performance
• improved guest support on AMD

version 5 [28 nov 2006]

• AMD SVM support (x86-64 hosts only)
• Preliminary live migration support
• 'make install' also installs kernel modules, if selected
• random fixes

version 4 [21 nov 2006]

• added the msr work
  • suspend/resume should work now
• more vmdk compatibility work
• random build updates

version 3 [15 nov 2006]

[Avi Kivity retained the natural number versioning after he contemplated the confusion that can arise from having releases 1, 2, and 0.3]

Kernel module

• make exit reason numbers explicit
• sync kernel module with -mm tree
  • asm constraint fixes
  • userspace interface blurb
  • segment restore across mode switch (fixes etherboot)
  • segment asm constraint fix (Bernhard Rosenkraenzer)
  • segment access cleanup

libkvm:

• better error reporting (Simon Kagstrom)
• 'make clean'
• attributions and license

kvmctl:

• add option to launch guest in 32-bit mode
• add test programs

qemu/kvm:

• autodetect kvm presence (Simon Kagstrom)

General

• fix host arch detection on debian
• fix ./configure on debian (Gildas)
• toplevel 'make clean'

version ?? [9 nov 2006]

• much easier to get running, see updated HOWTO
• now just one download, get yours while supplies last
• single qemu binary for kvm and non-kvm runs (Anthony Liguori)
• accompanying external kernel module package has all bugfixes folded in (plus a bit of cosmetics)

version v4 [5 nov 2006]

• [1]
• detect msrs on host dynamically. Avoids oopses on non-ia32e capable processors.
• web site: http://kvm.sourceforge.net
• slightly rediffed

version v3 [26 oct 2006]

• [2]
• mailing list: kvm-devel@public.gmane.org (http://lists.sourceforge.net/lists/listinfo/kvm-devel)
• applied code review comments
• fixed set_sregs() ioctl corrupting guest state if cr0.pe changed (a polite way of saying that loading a saved vm was broken)

version v2 [23 oct 2006]

• [3]
• fixed a lockup on i386 with host memory >= 4GB
• finer patch split to conform to vger limits
• minor fixes
• send through script to avoid mailer damage

version v1 [19 oct 2006]

• [4]