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Peter Maydell a7b21f6762 Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.1-pull-request' into staging 1 day ago
accel tcg: Add support for vector bitwise select 2 days ago
audio audio: fix audio timer rate conversion bug 1 month ago
authz authz: Normalize #include "authz/trace.h" to "trace.h" 1 week ago
backends Add vhost-user-backend 2 weeks ago
block block/file-posix: Unaligned O_DIRECT block-status 4 days ago
bsd-user cpu: Rename parse_cpu_model() to parse_cpu_option() 4 weeks ago
capstone @ 22ead3e0bf disas: Add capstone as submodule 1 year ago
chardev char-pty: Print "char device redirected" message to stdout 1 month ago
contrib contrib: add vhost-user-input 3 days ago
crypto crypto: Change the qcrypto_random_bytes buffer type to void* 2 days ago
default-configs hw/arm: Remove hard-enablement of the remaining PCI devices 1 week ago
disas Clean up header guards that don't match their file name 1 week ago
docs docs: recommend use of md-clear feature on all Intel CPUs 3 days ago
dtc @ 88f18909db Update dtc/libfdt submodule to v1.4.7 7 months ago
fpu hardfloat: fix float32/64 fused multiply-add 2 months ago
fsdev fsdev: Error out when unsupported option is passed 1 week ago
gdb-xml RISC-V: Add 64-bit gdb xml files. 2 months ago
hw hw/display/ramfb: initialize fw-config space with xres/ yres 1 day ago
include hw/display/ramfb: initialize fw-config space with xres/ yres 1 day ago
io trace-events: Shorten file names in comments 2 months ago
libdecnumber build: remove CONFIG_LIBDECNUMBER 1 year ago
linux-headers linux headers: update against Linux 5.2-rc1 3 days ago
linux-user Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.1-pull-request' into staging 1 day ago
migration migration: Fix typo in migrate_add_blocker() error message 2 days ago
nbd nbd/client: Fix error message for server with unusable sizing 1 month ago
net do not call vhost_net_cleanup() on running net from char user event 4 days ago
pc-bios pc-bios/s390: Update firmware image with "Skip bootmap signature entries" fix 2 weeks ago
po po/Makefile: Modern shell scripting (use $() instead of ``) 7 months ago
python/qemu scripts/ support adding a console with the default serial device 3 weeks ago
qapi qapi/migration.json: Rename COLOStatus last_mode to last-mode 1 month ago
qga Clean up ill-advised or unusual header guards 1 week ago
qobject json: Fix off-by-one assert check in next_state() 2 months ago
qom Revert "globals: Allow global properties to be optional" 4 days ago
replay replay: Exit on errors reading from replay log 6 months ago
roms roms: List and describe the Makefile 'clean' rule 3 days ago
scripts update-linux-headers: handle new header file 3 days ago
scsi Normalize header guard symbol definition. 1 week ago
slirp @ f0da672620 Update upstream slirp 2 weeks ago
stubs hw/display/ramfb: initialize fw-config space with xres/ yres 1 day ago
target arm: Remove unnecessary includes of hw/arm/arm.h 2 days ago
tcg tcg/i386: Use MOVDQA for TCG_TYPE_V128 load/store 2 days ago
tests tests: fw_cfg: add 'splash-time' test case 2 days ago
trace trace: Simplify how st_print_trace_file_status() prints 1 month ago
ui ui/vnc: Use gcrypto_random_bytes for start_auth_vnc 2 days ago
util util: Add qemu_guest_getrandom and associated routines 2 days ago
.cirrus.yml cirrus / travis: Add gnu-sed and bash for macOS and FreeBSD 4 days ago
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 3 years ago
.editorconfig editorconfig: set emacs mode 6 months ago
.exrc qemu: add .exrc 6 years ago
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 1 year ago
.gitignore Makefile: install the edk2 firmware images and their descriptors 1 month ago
.gitlab-ci.yml gitlab-ci.yml: Test the TCG interpreter in a CI pipeline 3 weeks ago
.gitmodules gitmodules: use git mirrors 3 weeks ago
.gitpublish Add a git-publish configuration file 1 year ago
.mailmap maint: Grammar fix to mailmap 5 months ago
.shippable.yml .shippable.yml: disable the win cross tests 5 months ago
.travis.yml cirrus / travis: Add gnu-sed and bash for macOS and FreeBSD 4 days ago
CODING_STYLE CODING_STYLE: indent example code as all others 3 weeks ago
COPYING COPYING: update from FSF 10 years ago
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from 3 months ago
Changelog Use HTTPS for and other domains 1 year ago
HACKING HACKING: document preference for g_new instead of g_malloc 1 year ago kconfig: add dependencies on CONFIG_MSI_NONBROKEN 2 months ago
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 4 years ago
MAINTAINERS hw/nvram/fw_cfg: Add fw_cfg_arch_key_name() 2 days ago
Makefile Merge remote-tracking branch 'remotes/rth/tags/pull-rng-20190522' into staging 2 days ago
Makefile.objs Merge remote-tracking branch 'remotes/rth/tags/pull-rng-20190522' into staging 2 days ago build: Link user-only with crypto random number objects 2 days ago
README README: use 'https://' instead of 'git://' 6 months ago
VERSION Open 4.1 development tree 1 month ago
arch_init.c arch_init: sort architectures 11 months ago
balloon.c balloon: Allow multiple inhibit users 9 months ago
block.c block: Improve "Block node is read-only" message 4 days ago
blockdev-nbd.c nbd: allow authorization with nbd-server-start QMP command 2 months ago
blockdev.c blockdev: Make -drive format=help print to stdout 1 month ago
blockjob.c blockjob: Remove AioContext notifiers 4 days ago
bootdevice.c fw_cfg: ignore suffixes in the bootdevice list dependent on machine class 9 months ago
bt-host.c all: Clean up includes 3 years ago
bt-vhci.c all: Clean up includes 3 years ago
configure Merge remote-tracking branch 'remotes/rth/tags/pull-rng-20190522' into staging 2 days ago
cpus-common.c qemu/queue.h: simplify reverse access to QTAILQ 4 months ago
cpus.c cpus: Initialize pseudo-random seeds for all guest cpus 2 days ago
device-hotplug.c hmp: Fix drive_add ... format=help crash 1 month ago
device_tree.c device_tree: Fix integer overflowing in load_device_tree() 1 month ago
disas.c disas: Rename include/disas/bfd.h back to include/disas/dis-asm.h 1 month 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 3 months ago
exec.c Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging 4 weeks ago
gdbstub.c gdbstub: Fix misuse of isxdigit() 3 days ago
gitdm.config contrib: gitdm: add a mapping for Janus Technologies 2 months ago
hmp-commands-info.hx {hmp, hw/pvrdma}: Expose device internals via monitor interface 2 months ago
hmp-commands.hx hmp: gva2gpa debug command 3 weeks ago
hmp.c hmp: delvm: use hmp_handle_error 3 weeks ago
hmp.h {hmp, hw/pvrdma}: Expose device internals via monitor interface 2 months 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() 2 months ago
job-qmp.c jobs: canonize Error object 8 months ago
job.c blockjob: Fix coroutine thread after AioContext change 2 weeks ago
memory.c memory: correct the comment to DIRTY_MEMORY_MIGRATION 1 week ago exec: Fix MAP_RAM for cached access 11 months ago
memory_mapping.c qemu/queue.h: simplify reverse access to QTAILQ 4 months ago
module-common.c all: Clean up includes 3 years ago
monitor.c monitor: Call mon_get_cpu() only once at hmp_gva2gpa() 1 week ago
numa.c numa: Fixed the memory leak of numa error message 3 months ago
os-posix.c util: add qemu_write_pidfile() 7 months ago
os-win32.c util: add qemu_write_pidfile() 7 months ago
qdev-monitor.c monitor: Simplify how -device/device_add print help 1 month ago
qemu-bridge-helper.c qemu-bridge-helper: Fix misuse of isspace() 3 days ago
qemu-deprecated.texi Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging 5 days ago
qemu-doc.texi docs: add Security chapter to the documentation 2 weeks ago
qemu-edid.c display/edid: add edid generator to qemu. 8 months ago
qemu-ga.texi doc: fix the configuration path 3 weeks ago
qemu-img-cmds.hx qemu-img: fix .hx and .texi disparity 1 month ago
qemu-img.c qemu-img: Use zero writes after source backing EOF 2 weeks ago
qemu-img.texi qemu-img.texi: Describe human-readable info output 4 days ago
qemu-io-cmds.c block: Use BDRV_REQUEST_MAX_BYTES instead of BDRV_REQUEST_MAX_SECTORS 4 days ago
qemu-io.c log: Make glib logging go through QEMU 1 month ago
qemu-keymap.c ui: use enum to string helpers 9 months ago
qemu-nbd.c qemu-nbd: Look up flag names in array 2 weeks ago
qemu-nbd.texi qemu-nbd: add support for authorization of TLS clients 2 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 2 years ago
qemu-options.hx cpus: Initialize pseudo-random seeds for all guest cpus 2 days ago
qemu-seccomp.c seccomp: report more useful errors from seccomp 1 month ago
qemu-tech.texi cli qmp: Mark --preconfig, exit-preconfig experimental 10 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 2 years ago
qmp.c qmp: forbid qmp_cont in RUN_STATE_FINISH_MIGRATE 4 days ago
qtest.c qtest: Move accel code to accel/qtest.c 3 weeks 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 2 months ago
thunk.c thunk: improve readability of allocation loop 2 months ago
tpm.c tpm: Clean up error reporting in tpm_init_tpmdev() 7 months ago
trace-events trace-events: Fix attribution of trace points to source 2 months ago
version.rc Use HTTPS for and other domains 1 year ago
vl.c cpus: Initialize pseudo-random seeds for all guest cpus 2 days ago
win_dump.c dump: fix Windows dump memory run mapping 7 months ago
win_dump.h dump: move Windows dump structures definitions 7 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