QEMU v0.12.2 is released. QEMU is a generic and open source machine emulator and virtualizer.When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performances.When used as a virtualizer, QEMU achieves near native performances by executing the guest code directly on the host CPU. A host driver called the QEMU accelerator (also known as KQEMU) is needed in this case. The virtualizer mode requires that both the host and guest machine use x86 compatible processors.

QEMU v0.12.2 changelog:
- Qemu's internal TFTP server breaks lock-step-iness of TFTP (Milan Plzik)
- osdep.c: Fix accept4 fallback (Kevin Wolf)
- pc: add rombar to compat properties for pc-0.10 and pc-0.11 (Gerd Hoffmann)
- pci: allow loading roms via fw_cfg. (Gerd Hoffmann)
- roms: rework rom loading via fw (Gerd Hoffmann)
- fw_cfg: rom loader tweaks. (Gerd Hoffmann)
- roms: minor fixes and cleanups. (Gerd Hoffmann)
- pc: add machine type for 0.12 (Gerd Hoffmann)
- loader: more ignores for rom intended to be loaded by the bios (Aurelien Jarno)
- vnc_refresh: return if vd->timer is NULL (Stefano Stabellini)
- QMP: Don't free async event's 'data' (Luiz Capitulino)
- Handle TFTP ERROR from client (Thomas Horsten)
- dmg: fix ->open failure (Christoph Hellwig)
- virtio-pci: thinko fix (Michael S. Tsirkin)
- pc-bios: Update README (SeaBIOS) (Stefan Weil)
- vmware_vga: Check cursor dimensions passed from guest to avoid buffer overflow (Roland Dreier)
- remove pending exception on vcpu reset. (Gleb Natapov)
- Fix CPU topology initialization (Jiri Denemark)
- MCE: Fix bug of IA32_MCG_STATUS after system reset (Huang Ying)
- linuxboot: fix gdt address calculation (Avi Kivity)
- QMP: Drop wrong assert() (Luiz Capitulino)
- vnc: Fix artifacts in hextile decoding (Anthony Liguori)
- target-i386: Fix "call im" on x86_64 when executing 32-bit code (Aurelien Jarno)
- Add missing newline at the end of options list (Michael Tokarev)
- Don't load options roms intended to be loaded by the bios in qemu (Avi Kivity)
- USB: Improve usbdevice error messages (Scott Tsai)
- cpu-all.h: fix cpu_get_real_ticks() #ifdef (Aurelien Jarno)
- alpha: fix compile (Blue Swirl)
- user_only: compile everything with -fpie (Kirill A. Shutemov)
- fdc/sparc32: don't hang on detection under OBP (Artyom Tarasenko)
- scsi-disk: Inquiry with allocation length of CDB < 36 (v4) (Artyom Tarasenko)
- e1000: fix init values for command register (Michael S. Tsirkin)

Download:QEMU v0.12.2
Source:Here