ChangeLog/0.15
0.15.0
Targets
- New targets added: LatticeMico32 and UniCore32.
ARM
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MIPS
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SH4
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PPC
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s390x
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SPARC
- Sparc32: Improvements to OpenBIOS make Solaris 8 boot possible.
- Minor Sparc32 and Sparc64 fixes.
Hosts
ARM
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MIPS
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IA64
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KVM
Common
- Countless fixes ported over from qemu-kvm, core is now shared with that tree, i.e. has the same quality
- Pimped up threading model, now fully synchronized with qemu-kvm tree
- Removed dependency on external kernel headers, all supported KVM features are now built into the binary
x86
- Paravirtual kvmclock fixes
- Stable guest TSC across migration
- Support for SMEP CPU feature
- Support for VIA CPU features
- Reworked & fixed MCE support
PPC
- ...
s390x
- ...
Devices
IDE / AHCI
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SCSI
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USB
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virtio
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virtio-serial
- Various fixes for hot-unplug of ports
- Disallow generic ports at id 0: port number 0 is reserved for console ports for backward compatibility; '-device virtserialport,nr=0' is now not allowed.
- Allow re-use of a chardev after a port using it gets unplugged
- Add trace events
PCI/PCI Express
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Sound
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Video
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RTC
- MC146818 (for PCs): Follow host clock resets to the past immediately (instead of freezing the clock)
Block Layer
- Added missing -drive options to the man page
Block Drivers
qcow2
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qed
- Support for growing images with qemu-img resize (commit)
- Periodically flush and clear need check bit to reduce chance of leaving image files dirty on power failure (commit)
- Fix consistency check on 32-bit hosts (commit)
CDROM Emulation
- Many fixes to comply with ATAPI specification
- GET_EVENT_STATUS_NOTIFICATION: Implement 'media' subcommand that helps report tray open/close, media present/absent states to guests. Newer Linux guests (kernels 2.6.38+) rely on this command to revalidate discs.
- Major code refactoring and cleanup
Networking
User space (slirp)
- Fixed DHCP support in restrict (host-only) mode
- Ping packet forwarding to external hosts via unprivileged ICMP sockets of Linux 3.0
Spice
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QMP / Monitor
- Support for two new QMP commands: inject-nmi (commit) and snapshot-blkdev-sync (commit)
- Fixed some issues with the JSON parser (several commits, first one here)
- Added the guest agent (commit)
Tracing
- Make simpletrace.py a Python module for trace analysis scripts (blog), (commit)
- Make 'simple' backend thread-safe (commit)
- Add tracetool --probe-prefix optional argument to prefix DTrace probe names (commit)
Linux-user
- Added support for ppoll, sched_{g,s}etaffinity, epoll, pselect6, prlimit64 syscalls
- Add s390x and unicore32 linux-user targets
- Numerous bugfixes
Other stuff
- Xen support merged (http://blog.xen.org/index.php/2011/05/13/xen-support-upstreamed-to-qemu/)