Features
This page tells you about all the features Qemu has and will get and/or lose in the foreseeable future.
Primary and Secondary
A primary feature is a feature that is actively maintained. Breaking it by introducing new code is a no-go.
Secondary features are there and work, but either there's no active maintainer caring enough about it or people don't deem the feature important enough to declare breakages here a blocking issue.
Guest CPU support
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| Alpha Guest | Secondary | ? | - | - |
| ARM Guest | Primary | Paul Brook Peter Maydell |
git://git.linaro.org/people/pmaydell/qemu-arm.git target-arm.next, arm-devs.next | - |
| CRIS Guest | Secondary | Edgar E. Iglesias | - | - |
| x86 Guest | Primary | ? | - | - |
| x86-64 Guest | Primary | ? | - | - |
| LM32 Guest | Secondary | Michael Walle | - | - |
| m68k Guest | Secondary | Paul Brook | - | - |
| MicroBlaze Guest | Secondary | Edgar E. Iglesias | - | - |
| MIPS Guest | Secondary | Aurelien Jarno | - | - |
| PPC Guest | Primary | Alexander Graf | git://repo.or.cz/qemu/agraf.git ppc-next | - |
| S390x Guest | Secondary | Alexander Graf | - | - |
| SH4 Guest | Secondary | Aurelien Jarno | - | - |
| Sparc Guest | Secondary | Blue Swirl | - | - |
| Xtensa Guest | Secondary | Max Filippov | - | - |
Host CPU support
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| Alpha Host | Secondary | Richard Henderson | - | - |
| ARM Host | Secondary | Paul Brook Peter Maydell |
- | - |
| HPPA Host | Secondary | Richard Henderson | - | - |
| x86 Host | Primary | ? | - | - |
| x86_64 Host | Primary | ? | - | - |
| IA64 Host | Secondary | Aurelien Jarno | - | - |
| MIPS Host | Secondary | Aurelien Jarno | - | - |
| PPC(64) Host | Secondary | malc | - | - |
| S390x Host | Secondary | Richard Henderson | - | - |
| Sparc Host | Secondary | Blue Swirl | - | - |
| Other Hosts | Experimental | Stefan Weil | - | - |
Block layer
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| Generic block layer | Primary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qemu-img Tool | Primary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qemu-nbd Tool | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qemu-io Tool | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| bochs Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| cloop Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| .cow Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| curl (http/ftp) Protocol | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| .dmg Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| nbd Protocol | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| parallels Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qcow Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qcow2 Format | Primary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| qed Format | Primary | Kevin Wolf Stefan Hajnoczi |
git://repo.or.cz/qemu/kevin.git block | - |
| raw Format | Primary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| sheepdog Format | Secondary | MORITA Kazutaka | - | - |
| .vdi Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| .vmdk Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| vpc Format | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
| vvfat Protocol | Secondary | Kevin Wolf | git://repo.or.cz/qemu/kevin.git block | - |
User interfaces
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| Human Monitor | Primary | ? | git://repo.or.cz/qemu/qmp-unstable.git queue/qmp | - |
| QMP | Primary | Luiz Capitulino | git://repo.or.cz/qemu/qmp-unstable.git queue/qmp | - |
| VNC Output | Primary | Anthony Liguori | - | - |
| Threaded VNC Output | Primary | Corentin Chary | - | - |
| SPICE Output | Primary | Gerd Hoffmann | git://anongit.freedesktop.org/spice/qemu ? | - |
| SDL Output | Primary | ? | - | - |
| curses Output | Secondary | ? | - | - |
| cocoa Output | Secondary | Andreas Färber | git://repo.or.cz/qemu/afaerber.git ? | - |
Host platform
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| Linux | Primary | ? | - | - |
| *BSD | Secondary | Blue Swirl | - | - |
| W32 | Secondary | Stefan Weil | - | This includes w32 and w64 hosts. |
| Mac OS X | Secondary | Andreas Färber | git://repo.or.cz/qemu/afaerber.git ? | - |
| AIX | Secondary | malc | - | - |
Hypervisor support
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| x86/x86_64 KVM | Primary | Avi Kivity Marcelo Tosatti |
git://github.com/avikivity/qemu.git uq/master | - |
| x86/x86_64 Xen | Secondary | Stefano Stabellini | - | - |
| PowerPC BookE KVM | Primary | Alexander Graf | - | - |
| PowerPC Book3S KVM | Primary | Alexander Graf | - | - |
| S390x KVM | Primary | Alexander Graf | - | - |
Other subsystems
| Feature | Importance | Maintainer | git tree | Comment |
|---|---|---|---|---|
| linux-user | Primary | Riku Voipio | git://git.linaro.org/people/rikuvoipio/qemu.git linux-user-for-upstream | - |
| PCI | Primary | Michael S. Tsirkin | git://github.com/mstsirkin/qemu.git ? | - |
| SLIRP | Secondary | Jan Kiszka | git://git.kiszka.org/qemu.git queues/slirp | - |
| Trivial patches | N/A | Stefan Hajnoczi | git://repo.or.cz/qemu/stefanha.git trivial-patches | - |
| Tracing | Primary | Stefan Hajnoczi | git://repo.or.cz/qemu/stefanha.git tracing | - |
| USB | Primary | Gerd Hoffman | git://git.kraxel.org/qemu ? | - |