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Peter Maydell eeba63fc7f Update version for v4.0.0-rc4 release 4 days ago
accel accel: Unbreak accelerator fallback 2 weeks ago
audio audio: fix audio timer rate conversion bug 2 weeks ago
authz filemon: fix watch IDs to avoid potential wraparound issues 2 weeks ago
backends vhost-user: simplify vhost_user_init/vhost_user_cleanup 1 month ago
block qcow2: Fix preallocation bdrv_pwrite to wrong file 4 days ago
bsd-user avoid TABs in files that only contain a few 3 months ago
capstone @ 22ead3e0bf disas: Add capstone as submodule 1 year ago
chardev socket: allow wait=false for client socket 4 days ago
contrib contrib/rdmacm-mux: Fix out-of-bounds risk 1 month ago
crypto trace-events: Shorten file names in comments 4 weeks ago
default-configs target/arm: add PCI_TESTDEV back to default config 3 weeks ago
disas RISC-V: Remove unnecessary disassembler constraints 1 month ago
docs docs: add note about stibp CPU feature for spectre v2 1 month ago
dtc @ 88f18909db Update dtc/libfdt submodule to v1.4.7 6 months ago
fpu hardfloat: fix float32/64 fused multiply-add 3 weeks ago
fsdev qemu/queue.h: leave head structs anonymous unless necessary 3 months ago
gdb-xml RISC-V: Add 64-bit gdb xml files. 1 month ago
hw usb-mtp: fix bounds check for guest provided filename 4 days ago
include include/qemu/bswap.h: Use __builtin_memcpy() in accessor functions 1 week ago
io trace-events: Shorten file names in comments 4 weeks ago
libdecnumber build: remove CONFIG_LIBDECNUMBER 1 year ago
linux-headers include: update Linux headers to 4.21-rc1/5.0-rc1 2 months ago
linux-user linux-user: rename gettid() to sys_gettid() to avoid clash with glibc 1 week ago
migration migration/ram.c: Fix use-after-free in multifd_recv_unfill_packet() 1 week ago
nbd nbd/client: Fix error message for server with unusable sizing 1 week ago
net net: tap: use qemu_set_nonblock 3 weeks ago
pc-bios pc-bios: Update palcode-clipper 3 weeks ago
po po/Makefile: Modern shell scripting (use $() instead of ``) 5 months ago
python/qemu Merge remote-tracking branch 'remotes/cleber/tags/python-next-pull-request' into staging 1 month ago
qapi qapi/migration.json: Rename COLOStatus last_mode to last-mode 2 weeks ago
qga qga: process_event() simplification 1 month ago
qobject json: Fix off-by-one assert check in next_state() 3 weeks ago
qom trace-events: Shorten file names in comments 4 weeks ago
replay replay: Exit on errors reading from replay log 5 months ago
roms roms: Allow passing configure options to the EDK2 build tools 1 week ago
scripts scripts/cleanup-trace-events: Update for current practice 4 weeks ago
scsi trace-events: Shorten file names in comments 4 weeks ago
slirp slirp: Gcc 9 -O3 fix 5 days ago
stubs exec: Change RAMBlockIterFunc definition 1 month ago
target target/i386: Generate #UD for LOCK on a register increment 1 week ago
tcg tcg: Remove TODO file 1 month ago
tests iotest: Fix 241 to run in generic directory 1 week ago
trace trace: handle tracefs path truncation 4 weeks ago
ui curses: fix wchar_t printf warning 1 week ago
util filemon: fix watch IDs to avoid potential wraparound issues 2 weeks ago
.cirrus.yml cirrus.yml: Add macOS continuous integration task 1 month ago
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 3 years ago
.editorconfig editorconfig: set emacs mode 5 months ago
.exrc qemu: add .exrc 6 years ago
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 1 year ago
.gitignore .gitignore: ignore docs/built created for in-tree builds 1 month ago
.gitlab-ci.yml Add a gitlab-ci file for Continuous Integration testing on Gitlab 1 month ago
.gitmodules roms: add the edk2 project as a git submodule 1 month ago
.gitpublish Add a git-publish configuration file 1 year ago
.mailmap maint: Grammar fix to mailmap 4 months ago
.shippable.yml .shippable.yml: disable the win cross tests 4 months ago
.travis.yml .travis.yml: reduce number of targets built while disabling things 3 weeks ago
CODING_STYLE CODING_STYLE: Define our preferred form for multiline comments 10 months ago
COPYING COPYING: update from FSF 10 years ago
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from 2 months ago
Changelog Use HTTPS for and other domains 1 year ago
HACKING HACKING: document preference for g_new instead of g_malloc 11 months ago kconfig: add dependencies on CONFIG_MSI_NONBROKEN 1 month ago
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 4 years ago
MAINTAINERS MAINTAINERS: Update the latest email address 3 weeks ago
Makefile config-all-devices.mak: rebuild on reconfigure 1 month ago
Makefile.objs RISC-V: Convert trap debugging to trace events 1 month ago tests/tcg: enable tcg tests for softmmu 1 month ago
README README: use 'https://' instead of 'git://' 5 months ago
VERSION Update version for v4.0.0-rc4 release 4 days ago
arch_init.c arch_init: sort architectures 10 months ago
balloon.c balloon: Allow multiple inhibit users 8 months ago
block.c block: Forward 'discard' to temporary overlay 1 week ago
blockdev-nbd.c nbd: allow authorization with nbd-server-start QMP command 1 month ago
blockdev.c blockdev: Check @replaces in blockdev_mirror_common 1 month ago
blockjob.c blockjob: fix user pause in block_job_error_action 1 month ago
bootdevice.c fw_cfg: ignore suffixes in the bootdevice list dependent on machine class 8 months ago
bt-host.c all: Clean up includes 3 years ago
bt-vhci.c all: Clean up includes 3 years ago
configure configure: add --target-list-exclude 3 weeks ago
cpus-common.c qemu/queue.h: simplify reverse access to QTAILQ 3 months ago
cpus.c cpus: Properly release the iothread lock when killing a dummy VCPU 1 month ago
device-hotplug.c hmp: Fix drive_add ... format=help crash 1 week ago
device_tree.c device_tree: Fix integer overflowing in load_device_tree() 1 week ago
disas.c disas: Add RISC-V support 3 months ago
dma-helpers.c block: explicitly acquire aiocontext in bottom halves that need it 2 years ago
dump.c dump: Set correct vaddr for ELF dump 2 months ago
exec.c exec: Only count mapped memory backends for qemu_getrampagesize() 3 weeks ago
gdbstub.c gdbstub: fix vCont packet handling when no thread is specified 3 weeks ago
gitdm.config contrib: gitdm: add a mapping for Janus Technologies 1 month ago
hmp-commands-info.hx {hmp, hw/pvrdma}: Expose device internals via monitor interface 1 month ago
hmp-commands.hx hmp: Add hmp_announce_self 1 month ago
hmp.c migration: Fix migrate_set_parameter 2 weeks ago
hmp.h {hmp, hw/pvrdma}: Expose device internals via monitor interface 1 month ago
ioport.c trace: switch to modular code generation for sub-directories 2 years ago
iothread.c iothread: document about why we need explicit aio_poll() 1 month ago
job-qmp.c jobs: canonize Error object 7 months ago
job.c job: Fix off-by-one assert checks for JobSTT and JobVerbTable 5 months ago
memory.c memory: Fix the memory region type assignment order 1 month ago exec: Fix MAP_RAM for cached access 9 months ago
memory_mapping.c qemu/queue.h: simplify reverse access to QTAILQ 3 months ago
module-common.c all: Clean up includes 3 years ago
monitor.c qmp: common 'id' handling & make QGA conform to QMP spec 1 month ago
numa.c numa: Fixed the memory leak of numa error message 2 months ago
os-posix.c util: add qemu_write_pidfile() 6 months ago
os-win32.c util: add qemu_write_pidfile() 6 months ago
qdev-monitor.c qdev: Let the hotplug_handler_unplug() caller delete the device 1 month ago
qemu-bridge-helper.c all: Remove unnecessary glib.h includes 2 years ago
qemu-deprecated.texi socket: allow wait=false for client socket 4 days ago
qemu-doc.texi qemu-doc: Add section on MIPS' Boston board 1 month ago
qemu-edid.c display/edid: add edid generator to qemu. 6 months ago
qemu-ga.texi qemu-ga: Remove stray 'q' in documentation 2 years ago
qemu-img-cmds.hx qemu-img: fix .hx and .texi disparity 1 week ago
qemu-img.c qemu-img: Enable BDRV_REQ_MAY_UNMAP in convert 2 weeks ago
qemu-img.texi qemu-img: fix .hx and .texi disparity 1 week ago
qemu-io-cmds.c qemu-io: Add write -n for BDRV_REQ_NO_FALLBACK 3 weeks ago
qemu-io.c qom: Clean up error reporting in user_creatable_add_opts_foreach() 6 months ago
qemu-keymap.c ui: use enum to string helpers 7 months ago
qemu-nbd.c qemu-nbd: add support for authorization of TLS clients 1 month ago
qemu-nbd.texi qemu-nbd: add support for authorization of TLS clients 1 month ago
qemu-option-trace.texi qemu-option-trace: -trace enable= is a pattern, not a file 11 months ago
qemu-options-wrapper.h qemu-img: remove references to GEN_DOCS 11 months ago
qemu-options.h Clean up ill-advised or unusual header guards 2 years ago
qemu-options.hx Merge remote-tracking branch 'remotes/kraxel/tags/ui-20190313-pull-request' into staging 1 month ago
qemu-seccomp.c seccomp: report more useful errors from seccomp 3 weeks ago
qemu-tech.texi cli qmp: Mark --preconfig, exit-preconfig experimental 9 months ago
qemu.nsi Use HTTPS for and other domains 1 year ago
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 1 year ago
qmp.c qapi: make query-cpu-definitions depend on specific targets 2 months ago
qtest.c char: allow specifying a GMainContext at opening time 2 months ago
replication.c replication: Introduce new APIs to do replication operation 2 years ago
replication.h block/replication: Remove protocol_name field 1 year ago
rules.mak build: switch to Kconfig 1 month ago
thunk.c thunk: improve readability of allocation loop 1 month ago
tpm.c tpm: Clean up error reporting in tpm_init_tpmdev() 6 months ago
trace-events trace-events: Fix attribution of trace points to source 4 weeks ago
version.rc Use HTTPS for and other domains 1 year ago
vl.c vl: Document dependencies hiding in global and compat props 2 weeks ago
win_dump.c dump: fix Windows dump memory run mapping 6 months ago
win_dump.h dump: move Windows dump structures definitions 6 months ago


         QEMU README

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

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.


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:

mkdir build
cd build

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

Submitting patches

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

git clone

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

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

The QEMU website is also maintained under source control.

git clone

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

The workflow with 'git-publish' is:

$ 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:

$ 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:

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:


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

- #qemu on

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

-- End