You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Peter Maydell e9d4246192 audio: bugfixes, pa connection and stream naming. 1 day ago
accel accel/kvm: ensure ret always set 2 weeks ago
audio paaudio: fix channel order for usb-audio 5.1 and 7.1 streams 1 day ago
authz Include qemu/module.h where needed, drop it from qemu-common.h 4 months ago
backends virtio,vhost,pc: features, fixes, cleanups. 1 month ago
block qcow2-bitmap: move bitmap reopen-rw code to qcow2_reopen_commit 1 day ago
bsd-user Include qemu-common.h exactly where needed 4 months ago
capstone @ 22ead3e0bf disas: Add capstone as submodule 2 years ago
chardev socket: Add num connections to qio_net_listener_open_sync() 1 month ago
contrib virtio,vhost: fixes, features, cleanups. 1 month ago
crypto qcrypto-luks: more rigorous header checking 3 weeks ago
default-configs ipmi: Add an SMBus IPMI interface 4 weeks ago
disas cris: do not leak struct cris_disasm_data 2 weeks ago
docs virtio, vhost, acpi: features, fixes, tests 2 days ago
dtc @ 88f18909db Update dtc/libfdt submodule to v1.4.7 1 year ago
dump sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2 months ago
fpu fpu: rename softfloat-specialize.h -> .inc.c 2 months ago
fsdev 9p: Added virtfs option 'multidevs=remap|forbid|warn' 1 week ago
gdb-xml RISC-V: Add 64-bit gdb xml files. 7 months ago
hw audio: bugfixes, pa connection and stream naming. 1 day ago
include pull request 1 day ago
io socket: Add num connections to qio_net_listener_open_sync() 1 month ago
libdecnumber build: remove CONFIG_LIBDECNUMBER 2 years ago
linux-headers linux headers: update against v5.4-rc1 4 days ago
linux-user target-arm queue: 2 weeks ago
migration block/dirty-bitmap: refactor bdrv_dirty_bitmap_next 1 day ago
monitor Monitor patches for 2019-08-21 1 month ago
nbd nbd: Grab aio context lock in more places 3 weeks ago
net virtio, vhost, acpi: features, fixes, tests 2 days ago
pc-bios Update OpenBIOS images to f28e16f9 built from submodule. 1 week ago
po po/Makefile: Modern shell scripting (use $() instead of ``) 1 year ago
python/qemu Replace '-machine accel=xyz' with '-accel xyz' 1 month ago
qapi audio: bugfixes, pa connection and stream naming. 1 day ago
qga socket: Add backlog parameter to socket_listen 1 month ago
qobject json: Move switch 'fall through' comment to correct place 1 month ago
qom vl: Split off user_creatable_print_help() 5 days ago
replay replay: add BH oneshot event for block layer 5 days ago
roms Update OpenBIOS images to f28e16f9 built from submodule. 1 week ago
scripts trace: avoid "is" with a literal Python 3.8 warnings 4 days ago
scsi qemu-pr-helper: fix crash in mpath_reconstruct_sense 2 weeks ago
slirp @ 126c04acba slirp: update with CVE-2019-14378 fix 2 months ago
stubs replay: add BH oneshot event for block layer 5 days ago
target target/i386: Add Snowridge-v2 (no MPX) CPU model 3 days ago
tcg tcg/ppc: Update vector support for v3.00 dup/dupi 5 days ago
tests pull request 1 day ago
trace tcg: TCGMemOp is now accelerator independent MemOp 1 month ago
ui ui: fix keymap file search in input-barrier object 1 day ago
util util/hbitmap: strict hbitmap_reset 1 day ago
.cirrus.yml cirrus / travis: Add gnu-sed and bash for macOS and FreeBSD 5 months ago
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 4 years ago
.editorconfig editorconfig: add setting for shell scripts 4 months ago
.exrc qemu: add .exrc 7 years ago
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 2 years ago
.gitignore build: Don't ignore qapi-visit-core.c 1 month ago
.gitlab-ci.yml gitlab-ci.yml: Install libattr-devel and libcap-devel to test virtio-9p 1 month ago
.gitmodules roms: Add OpenSBI version 0.4 3 months ago
.gitpublish Add a git-publish configuration file 1 year ago
.mailmap .mailmap/aliases: add some further commentary 1 month ago
.patchew.yml ci: store Patchew configuration in the tree 4 months ago
.shippable.yml tests/docker: add debian-amd64-cross for non-x86 hosts 1 month ago
.travis.yml travis.yml: Install libcap-dev for testing virito-9p 1 month ago
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 1 month ago
COPYING COPYING: update from FSF 11 years ago
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from gnu.org 8 months ago
Changelog Use HTTPS for qemu.org and other domains 1 year ago
Kconfig.host 9p: simplify source file selection 2 months ago
LICENSE roms: Add OpenSBI version 0.4 3 months ago
MAINTAINERS MAINTAINERS: Add Vladimir as a reviewer for bitmaps 1 day ago
Makefile sphinx: Use separate doctree directories for different builders 2 days ago
Makefile.objs loader: Trace loaded images 1 month ago
Makefile.target tests/tcg: cleanup Makefile inclusions 1 month ago
README.rst docs: merge HACKING.rst contents into CODING_STYLE.rst 1 month ago
VERSION Open 4.2 development tree 2 months ago
arch_init.c qapi: Move query-target from misc.json to machine.json 1 month ago
balloon.c Clean up inclusion of exec/cpu-common.h 2 months ago
block.c qcow2-bitmap: move bitmap reopen-rw code to qcow2_reopen_commit 1 day ago
blockdev-nbd.c nbd: Grab aio context lock in more places 3 weeks ago
blockdev.c dirty-bitmaps: remove deprecated autoload parameter 1 day ago
blockjob.c blockjob: update nodes head while removing all bdrv 1 month ago
bootdevice.c fw_cfg: ignore suffixes in the bootdevice list dependent on machine class 1 year ago
bt-host.c all: Clean up includes 3 years ago
bt-vhci.c Include qemu-common.h exactly where needed 4 months ago
configure virtio, vhost, acpi: features, fixes, tests 2 days ago
cpus-common.c Monitor patches for 2019-08-21 1 month ago
cpus.c Host vector support for tcg/ppc. 2 days ago
device-hotplug.c Include hw/hw.h exactly where needed 2 months ago
device_tree.c device_tree: Fix integer overflowing in load_device_tree() 6 months ago
disas.c Include qemu-common.h exactly where needed 4 months ago
dma-helpers.c dma-helpers: ensure AIO callback is invoked after cancellation 2 months ago
exec.c rcu: Use automatic rc_read unlock in core memory/exec code 1 week ago
gdbstub.c gdbstub: Fix handler for 'F' packet 1 month ago
gitdm.config contrib: gitdm: add a mapping for Janus Technologies 7 months ago
hmp-commands-info.hx riscv: hmp: Add a command to show virtual memory mappings 1 month ago
hmp-commands.hx audio: add audiodev property to vnc and wav_capture 1 month ago
ioport.c Include qemu-common.h exactly where needed 4 months ago
iothread.c iothread: document about why we need explicit aio_poll() 7 months ago
job-qmp.c Include qemu-common.h exactly where needed 4 months ago
job.c job: drop job_drain 1 month ago
memory.c rcu: Use automatic rc_read unlock in core memory/exec code 1 week ago
memory_ldst.inc.c memory: Single byte swap along the I/O path 1 month ago
memory_mapping.c Include qemu-common.h exactly where needed 4 months ago
module-common.c all: Clean up includes 3 years ago
os-posix.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2 months ago
os-win32.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2 months ago
qdev-monitor.c qdev/machine: Introduce hotplug_allowed hook 1 month ago
qemu-bridge-helper.c qemu-bridge-helper: move repeating code in parse_acl_file 2 months ago
qemu-deprecated.texi dirty-bitmaps: remove deprecated autoload parameter 1 day ago
qemu-doc.texi qemu-ga: Convert invocation documentation to rST 1 month ago
qemu-edid.c Include qemu-common.h exactly where needed 4 months ago
qemu-img-cmds.hx qemu-img: Add salvaging mode to convert 4 months ago
qemu-img.c qemu-img: Support help options for --object 5 days ago
qemu-img.texi doc: Preallocation does not require writing zeroes 2 months ago
qemu-io-cmds.c qemu-io: Don't leak pattern file in error path 1 month ago
qemu-io.c qemu-io: Support help options for --object 5 days ago
qemu-keymap.c Include qemu-common.h exactly where needed 4 months ago
qemu-nbd.c qemu-nbd: Support help options for --object 5 days ago
qemu-nbd.texi qemu-nbd: Add --pid-file option 4 months ago
qemu-option-trace.texi qemu-option-trace: -trace enable= is a pattern, not a file 1 year ago
qemu-options-wrapper.h qemu-img: remove references to GEN_DOCS 1 year ago
qemu-options.h Clean up ill-advised or unusual header guards 3 years ago
qemu-options.hx audio: add mixing-engine option (documentation) 1 day ago
qemu-seccomp.c seccomp: report more useful errors from seccomp 6 months ago
qemu-tech.texi qemu-tech: Fix dangling @menu entries 3 months ago
qemu.nsi win32: fix README file in NSIS installer 1 month ago
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 2 years ago
qtest.c tests: add module loading test 1 month ago
replication.c replication: Introduce new APIs to do replication operation 3 years ago
replication.h Include qemu/module.h where needed, drop it from qemu-common.h 4 months ago
rules.mak contrib: add vhost-user-gpu 4 months ago
thunk.c thunk: improve readability of allocation loop 7 months ago
tpm.c tpm: Clean up error reporting in tpm_init_tpmdev() 1 year ago
trace-events exec: Adjust notdirty tracing 3 weeks ago
version.rc Use HTTPS for qemu.org and other domains 1 year ago
vl.c vl: Split off user_creatable_print_help() 5 days ago

README.rst

===========
QEMU README
===========

QEMU is a generic and open source machine & userspace emulator and
virtualizer.

QEMU is capable of emulating a complete machine in software without any
need for hardware virtualization support. By using dynamic translation,
it achieves very good performance. QEMU can also integrate with the Xen
and KVM hypervisors to provide emulated hardware while allowing the
hypervisor to manage the CPU. With hypervisor support, QEMU can achieve
near native performance for CPUs. When QEMU emulates CPUs directly it is
capable of running operating systems made for one machine (e.g. an ARMv7
board) on a different machine (e.g. an x86_64 PC board).

QEMU is also capable of providing userspace API virtualization for Linux
and BSD kernel interfaces. This allows binaries compiled against one
architecture ABI (e.g. the Linux PPC64 ABI) to be run on a host using a
different architecture ABI (e.g. the Linux x86_64 ABI). This does not
involve any hardware emulation, simply CPU and syscall emulation.

QEMU aims to fit into a variety of use cases. It can be invoked directly
by users wishing to have full control over its behaviour and settings.
It also aims to facilitate integration into higher level management
layers, by providing a stable command line interface and monitor API.
It is commonly invoked indirectly via the libvirt library when using
open source applications such as oVirt, OpenStack and virt-manager.

QEMU as a whole is released under the GNU General Public License,
version 2. For full licensing details, consult the LICENSE file.


Building
========

QEMU is multi-platform software intended to be buildable on all modern
Linux platforms, OS-X, Win32 (via the Mingw64 toolchain) and a variety
of other UNIX targets. The simple steps to build QEMU are:


.. code-block:: shell

mkdir build
cd build
../configure
make

Additional information can also be found online via the QEMU website:

* `<https://qemu.org/Hosts/Linux>`_
* `<https://qemu.org/Hosts/Mac>`_
* `<https://qemu.org/Hosts/W32>`_


Submitting patches
==================

The QEMU source code is maintained under the GIT version control system.

.. code-block:: shell

git clone https://git.qemu.org/git/qemu.git

When submitting patches, one common approach is to use 'git
format-patch' and/or 'git send-email' to format & send the mail to the
qemu-devel@nongnu.org mailing list. All patches submitted must contain
a 'Signed-off-by' line from the author. Patches should follow the
guidelines set out in the CODING_STYLE.rst file.

Additional information on submitting patches can be found online via
the QEMU website

* `<https://qemu.org/Contribute/SubmitAPatch>`_
* `<https://qemu.org/Contribute/TrivialPatches>`_

The QEMU website is also maintained under source control.

.. code-block:: shell

git clone https://git.qemu.org/git/qemu-web.git

* `<https://www.qemu.org/2017/02/04/the-new-qemu-website-is-up/>`_

A 'git-publish' utility was created to make above process less
cumbersome, and is highly recommended for making regular contributions,
or even just for sending consecutive patch series revisions. It also
requires a working 'git send-email' setup, and by default doesn't
automate everything, so you may want to go through the above steps
manually for once.

For installation instructions, please go to

* `<https://github.com/stefanha/git-publish>`_

The workflow with 'git-publish' is:

.. code-block:: shell

$ git checkout master -b my-feature
$ # work on new commits, add your 'Signed-off-by' lines to each
$ git publish

Your patch series will be sent and tagged as my-feature-v1 if you need to refer
back to it in the future.

Sending v2:

.. code-block:: shell

$ git checkout my-feature # same topic branch
$ # making changes to the commits (using 'git rebase', for example)
$ git publish

Your patch series will be sent with 'v2' tag in the subject and the git tip
will be tagged as my-feature-v2.

Bug reporting
=============

The QEMU project uses Launchpad as its primary upstream bug tracker. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

* `<https://bugs.launchpad.net/qemu/>`_

If using QEMU via an operating system vendor pre-built binary package, it
is preferable to report bugs to the vendor's own bug tracker first. If
the bug is also known to affect latest upstream code, it can also be
reported via launchpad.

For additional information on bug reporting consult:

* `<https://qemu.org/Contribute/ReportABug>`_


Contact
=======

The QEMU community can be contacted in a number of ways, with the two
main methods being email and IRC

* `<mailto:qemu-devel@nongnu.org>`_
* `<https://lists.nongnu.org/mailman/listinfo/qemu-devel>`_
* #qemu on irc.oftc.net

Information on additional methods of contacting the community can be
found online via the QEMU website:

* `<https://qemu.org/Contribute/StartHere>`_