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Peter Maydell 02f9c885ed * fix for x86 KVM on older kernels (Yang Zhong) 2 days ago
accel kvm: Introduce KVM irqchip change notifier 1 week ago
audio audio: fix audio recording 2 weeks ago
authz Include qemu/module.h where needed, drop it from qemu-common.h 5 months ago
backends core: replace getpagesize() with qemu_real_host_page_size 1 month ago
block block/file-posix: Fix laio_init() error handling crash bug 6 days ago
bsd-user *-user: plugin syscalls 1 month ago
capstone @ 22ead3e0bf disas: Add capstone as submodule 2 years ago
chardev socket: Add num connections to qio_net_listener_open_sync() 3 months ago
contrib vhost-user-input: use free(elem) instead of g_free(elem) 2 weeks ago
crypto crypto: add support for nettle's native XTS impl 1 month ago
default-configs Add Macintosh Quadra 800 machine in hw/m68k 1 month ago
disas cris: do not leak struct cris_disasm_data 2 months ago
docs docs/devel: update tcg-plugins.rst with API versioning details 2 weeks ago
dtc @ 88f18909db Update dtc/libfdt submodule to v1.4.7 1 year ago
dump sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 3 months ago
fpu softfp: Added hardfloat conversion from float32 to float64 1 month ago
fsdev 9p: Added virtfs option 'multidevs=remap|forbid|warn' 1 month ago
gdb-xml target/riscv: Expose "priv" register for GDB for reads 1 month ago
hw net/virtio: Fix failover error handling crash bugs 6 days ago
include target-arm queue: 1 week ago
io socket: Add num connections to qio_net_listener_open_sync() 3 months ago
libdecnumber build: remove CONFIG_LIBDECNUMBER 2 years ago
linux-headers linux headers: update against v5.4-rc1 1 month ago
linux-user linux-user: fix translation of statx structures 1 week ago
migration net/virtio: fix dev_unplug_pending 1 week ago
monitor monitor/qmp: resume monitor when clearing its queue 2 weeks ago
nbd nbd: Don't send oversize strings 2 weeks ago
net COLO-compare: Fix incorrect `if` logic 1 month ago
pc-bios pc-bios/s390: Update firmware image with the "fix sclp_get_loadparm_ascii" patch 1 week ago
plugins tcg plugins: expose an API version concept 3 weeks ago
po ui/gtk: fix gettext message's charset. 2 weeks ago
python/qemu Python libs: close console sockets before shutting down the VMs 1 month ago
qapi bitmap: Enforce maximum bitmap name length 2 weeks ago
qga qga: Add "guest-get-memory-block-info" to blacklist 1 month ago
qobject json: Move switch 'fall through' comment to correct place 3 months ago
qom qom: Fix error message in object_class_property_add() 3 weeks ago
replay replay: add BH oneshot event for block layer 1 month ago
roms seabios: update to pre-1.13 snapshot again (lchs fixed) 2 weeks ago
scripts vmstate-static-checker: Fix for current python 1 week ago
scsi qemu-pr-helper: fix crash in mpath_reconstruct_sense 2 months ago
slirp @ 126c04acba slirp: update with CVE-2019-14378 fix 4 months ago
stubs hw/pci-host/piix: Move i440FX declarations to hw/pci-host/i440fx.h 1 month ago
target target/i386: disable VMX features if nested=0 2 days ago
tcg tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing 3 weeks ago
tests A few vm-test updates 1 week ago
trace trace: add mmu_index to mem_info 1 month ago
ui ui/gtk: fix gettext message's charset. 2 weeks ago
util util/cutils: Fix incorrect integer->float conversion caught by clang 1 week ago
.cirrus.yml cirrus.yml: add latest Xcode build target 1 month ago
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 4 years ago
.editorconfig editorconfig: add setting for shell scripts 5 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 2 months ago
.gitlab-ci.yml gitlab-ci.yml: Use libvdeplug-dev to compile-test the VDE network backend 1 month ago
.gitmodules roms: add microvm-bios (qboot) as binary and git submodule 1 month ago
.gitpublish Add a git-publish configuration file 1 year ago
.mailmap MAINTAINERS: Update mail address of Aleksandar Rikalo 1 month ago
.patchew.yml ci: store Patchew configuration in the tree 6 months ago
.shippable.yml tests/docker: set HOST_ARCH if we don't have ARCH 1 month ago
.travis.yml .travis.yml: drop xcode9.4 from build matrix 1 week ago
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 3 months ago
COPYING COPYING: update from FSF 11 years ago
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from gnu.org 10 months ago
Changelog Use HTTPS for qemu.org and other domains 2 years ago
Kconfig.host 9p: simplify source file selection 3 months ago
LICENSE tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing 3 weeks ago
MAINTAINERS docs/devel: rename plugins.rst to tcg-plugins.rst 2 weeks ago
Makefile Trivial fixes (20191112) 3 weeks ago
Makefile.objs hw: Move PL031 device from hw/timer/ to hw/rtc/ subdirectory 1 month ago
Makefile.target TCG Plugins initial implementation 1 month ago
README.rst docs: merge HACKING.rst contents into CODING_STYLE.rst 3 months ago
VERSION Update version for v4.2.0-rc4 release 5 days ago
arch_init.c hw/m68k: add Nubus macfb video card 1 month ago
balloon.c Clean up inclusion of exec/cpu-common.h 3 months ago
block.c block: Remove 'backing': null from bs->{explicit_,}options 2 weeks ago
blockdev-nbd.c nbd: Don't send oversize strings 2 weeks ago
blockdev.c block: Add @exact parameter to bdrv_co_truncate() 1 month ago
blockjob.c blockjob: update nodes head while removing all bdrv 2 months ago
bootdevice.c bootdevice: FW_CFG interface for LCHS values 1 month ago
bt-host.c all: Clean up includes 3 years ago
bt-vhci.c Include qemu-common.h exactly where needed 5 months ago
configure configure: Check bzip2 is available 3 weeks ago
cpus-common.c cpu: introduce cpu_in_exclusive_context() 1 month ago
cpus.c cpu: hook plugin vcpu events 1 month ago
device-hotplug.c Include hw/hw.h exactly where needed 3 months ago
device_tree.c device_tree: Fix integer overflowing in load_device_tree() 8 months ago
disas.c plugin: add qemu_plugin_insn_disas helper 1 month ago
dma-helpers.c dma-helpers: ensure AIO callback is invoked after cancellation 3 months ago
exec-vary.c exec: Cache TARGET_PAGE_MASK for TARGET_PAGE_BITS_VARY 1 month ago
exec.c TCG Plugins initial implementation 1 month ago
gdbstub.c gdbstub: Fix handler for 'F' packet 3 months ago
gitdm.config contrib: gitdm: add a mapping for Janus Technologies 9 months ago
hmp-commands-info.hx riscv: hmp: Add a command to show virtual memory mappings 2 months ago
hmp-commands.hx audio: add audiodev property to vnc and wav_capture 3 months ago
ioport.c Include qemu-common.h exactly where needed 5 months ago
iothread.c iothread: document about why we need explicit aio_poll() 9 months ago
job-qmp.c Include qemu-common.h exactly where needed 5 months ago
job.c job: drop job_drain 2 months ago
memory.c Remove unassigned_access CPU hook 3 weeks ago
memory_ldst.inc.c memory: Single byte swap along the I/O path 3 months ago
memory_mapping.c Include qemu-common.h exactly where needed 5 months ago
module-common.c all: Clean up includes 3 years ago
os-posix.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 3 months ago
os-win32.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 3 months ago
qdev-monitor.c migration: allow unplug during migration for failover devices 1 month ago
qemu-bridge-helper.c qemu-bridge-helper: move repeating code in parse_acl_file 4 months ago
qemu-deprecated.texi scsi: deprecate scsi-disk 2 weeks ago
qemu-doc.texi buildfix: update texinfo menu 2 weeks ago
qemu-edid.c Include qemu-common.h exactly where needed 5 months ago
qemu-img-cmds.hx qemu-img: Add salvaging mode to convert 5 months ago
qemu-img.c Revert "qemu-img: Check post-truncation size" 1 month ago
qemu-img.texi doc: Preallocation does not require writing zeroes 3 months ago
qemu-io-cmds.c block: Pass truncate exact=true where reasonable 1 month ago
qemu-io.c qemu-io: Support help options for --object 1 month ago
qemu-keymap.c Include qemu-common.h exactly where needed 5 months ago
qemu-nbd.c nbd: Don't send oversize strings 2 weeks ago
qemu-nbd.texi qemu-nbd: Add --pid-file option 5 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: documentation update 1 month ago
qemu-seccomp.c seccomp: report more useful errors from seccomp 8 months ago
qemu-tech.texi qemu-tech: Fix dangling @menu entries 4 months ago
qemu.nsi win32: fix README file in NSIS installer 2 months ago
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 2 years ago
qtest.c tests: add module loading test 3 months 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 5 months ago
rules.mak contrib: add vhost-user-gpu 6 months ago
thunk.c thunk: improve readability of allocation loop 9 months ago
tpm.c tpm: Clean up error reporting in tpm_init_tpmdev() 1 year ago
trace-events trace: add mmu_index to mem_info 1 month ago
version.rc Use HTTPS for qemu.org and other domains 2 years ago
vl.c TCG Plugins initial implementation 1 month 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>`_