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Richard Henderson 7929f75f34 Pull request
A small documentation fix.
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Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

A small documentation fix.

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# gpg: Signature made Wed 25 May 2022 05:48:53 AM PDT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]

* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  docs: Correct the default thread-pool-size

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-05-25 11:34:49 -07:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates GitLab: Add "Feature Request" issue template. 2021-06-25 10:08:37 +01:00
.gitlab-ci.d capstone: Remove the capstone submodule 2022-05-18 08:54:22 +02:00
accel Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
audio introduce -audio as a replacement for -soundhw 2022-05-14 12:33:44 +02:00
authz configure, meson: convert pam detection to meson 2021-06-25 10:54:10 +02:00
backends rng: make opened property read-only 2022-05-14 12:33:44 +02:00
block coroutine-lock: qemu_co_queue_restart_all is a coroutine-only qemu_co_enter_all 2022-05-12 12:29:44 +02:00
bsd-user Clean up decorations and whitespace around header guards 2022-05-11 16:50:32 +02:00
chardev QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
common-user common-user/host/sparc64: Fix safe_syscall_base 2022-02-09 08:46:23 +11:00
configs hppa: use new CONFIG_HPPA_B160L option instead of CONFIG_DINO to build hppa machine 2022-05-08 18:52:36 +01:00
contrib vhost-user-scsi: avoid unlink(NULL) with fd passing 2022-05-16 16:48:35 -04:00
crypto crypto: make loaded property read-only 2022-05-14 12:33:44 +02:00
disas disas: Remove old libopcode ppc disassembler 2022-05-09 08:21:05 +02:00
docs docs: Correct the default thread-pool-size 2022-05-25 11:01:38 +01:00
dtc@b6910bec11 dtc: Update to version 1.6.1 2021-10-14 08:08:11 +02:00
dump dump/win_dump: add 32-bit guest Windows support 2022-04-22 13:41:56 +04:00
ebpf ebpf: only include in system emulators 2021-09-17 16:07:52 +08:00
fpu softfloat: Use FloatRelation for fracN_cmp 2022-04-26 20:01:55 -07:00
fsdev Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
gdb-xml target/arm: Advertise MVE to gdb when present 2021-11-02 14:14:55 -04:00
hw hw/core: loader: Set is_linux to true for VxWorks uImage 2022-05-24 10:38:50 +10:00
include * Remove Ubuntu 18.04 containers (not supported anymore) 2022-05-20 08:04:30 -07:00
io QIOChannelSocket: Implement io_writev zero copy flag & io_flush for CONFIG_LINUX 2022-05-16 13:56:24 +01:00
libdecnumber libdecnumber: Introduce decNumberIntegralToInt128 2021-11-09 10:32:52 +11:00
linux-headers linux-headers: Update to v5.18-rc6 2022-05-13 08:20:11 -06:00
linux-user linux-user/host/s390: Treat EX and EXRL as writes 2022-05-23 22:54:02 +02:00
meson@12f9f04ba0 meson: bump submodule to 0.59.3 2021-11-02 15:57:28 +01:00
migration multifd: Implement zero copy write in multifd migration (multifd-zero-copy) 2022-05-16 13:56:24 +01:00
monitor migration: Add zero-copy-send parameter for QMP/HMP for Linux 2022-05-16 13:56:24 +01:00
nbd nbd/server: Allow MULTI_CONN for shared writable exports 2022-05-12 13:10:52 +02:00
net net/vmnet: implement bridged mode (vmnet-bridged) 2022-05-17 16:48:23 +08:00
pc-bios hppa: Artist graphics driver fixes for HP-UX and keyboard fix in firmware boot console 2022-05-18 09:32:15 -07:00
plugins Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
po po: update turkish translation 2021-10-22 18:07:30 +02:00
python python/qmp: remove pylint workaround from legacy.py 2022-04-21 11:01:00 -04:00
qapi net/vmnet: add vmnet backends to qapi/net 2022-05-17 16:48:23 +08:00
qga qga-win32: Add support for NVME bus type 2022-05-25 12:12:02 +03:00
qobject include/qapi: add g_autoptr support for qobject types 2022-04-06 10:50:38 +02:00
qom include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
replay Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
roms seabios-hppa: Update SeaBIOS-hppa to VERSION 5 2022-05-16 15:51:02 +02:00
scripts * Remove Ubuntu 18.04 containers (not supported anymore) 2022-05-20 08:04:30 -07:00
scsi QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
semihosting linux-user: Clean up arg_start/arg_end confusion 2022-05-23 08:15:19 +02:00
slirp@9d59bb775d slirp: bump submodule past 4.7 release 2022-05-12 12:29:44 +02:00
softmmu virtio,pc,pci: fixes,cleanups,features 2022-05-16 16:31:01 -07:00
storage-daemon include: rename qemu-common.h qemu/help-texts.h 2022-04-21 16:58:24 +04:00
stubs Move error_printf_unless_qmp() with monitor unit 2022-04-21 17:09:09 +04:00
subprojects/libvhost-user libvhost-user: expose vu_request_to_string 2022-05-16 04:38:40 -04:00
target target/riscv: add zicsr/zifencei to isa_string 2022-05-24 10:38:50 +10:00
tcg Normalize header guard symbol definition 2022-05-11 16:50:26 +02:00
tests Pull request linux-user 20220525 2022-05-25 09:32:38 -07:00
tools Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
trace error: use GLib to remember the program name 2022-03-22 14:46:18 +04:00
ui meson: link libpng independent of vnc 2022-05-12 12:29:44 +02:00
util * small cleanups for pc-bios/optionrom Makefiles 2022-05-12 10:52:15 -07:00
.cirrus.yml cirrus/win32: upgrade mingw base packages 2022-05-09 08:21:14 +02:00
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 2015-10-08 19:46:01 +03:00
.editorconfig .editorconfig: update the automatic mode setting for Emacs 2021-03-10 15:34:11 +00:00
.exrc
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 2017-06-07 14:38:45 +01:00
.gitattributes gitattributes: Cover Objective-C source files 2022-03-29 00:15:14 +02:00
.gitignore .gitignore: add .gcov pattern 2022-02-09 12:08:41 +00:00
.gitlab-ci.yml docs: Document GitLab custom CI/CD variables 2021-07-29 07:56:01 +02:00
.gitmodules capstone: Remove the capstone submodule 2022-05-18 08:54:22 +02:00
.gitpublish Add a git-publish configuration file 2018-03-05 09:03:17 +00:00
.mailmap MAINTAINERS/.mailmap: update email for Leif Lindholm 2022-05-09 11:47:53 +01:00
.patchew.yml scripts/checkpatch: roll diff tweaking into checkpatch itself 2021-06-25 10:08:33 +01:00
.readthedocs.yml readthedocs: build with Python 3.6 2020-10-05 16:30:45 +01:00
.travis.yml gitlab: disable accelerated zlib for s390x 2022-03-22 17:07:30 +00:00
COPYING
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from gnu.org 2019-01-30 11:01:22 +01:00
Kconfig meson: Introduce target-specific Kconfig 2021-07-09 18:21:34 +02:00
Kconfig.host meson: use have_vhost_* variables to pick sources 2022-05-07 07:46:58 +02:00
LICENSE tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing 2019-11-11 15:11:21 +01:00
MAINTAINERS MAINTAINERS: Add entry for Compute Express Link Emulation 2022-05-13 06:13:36 -04:00
Makefile build: remove useless dependency 2022-05-14 12:33:44 +02:00
README.rst README: Fix some documentation URLs 2021-10-23 20:28:12 +02:00
VERSION Open 7.1 development tree 2022-04-19 18:21:23 -07:00
block.c block: Classify bdrv_get_flags() as I/O function 2022-05-04 15:55:23 +02:00
blockdev-nbd.c nbd/server: Allow MULTI_CONN for shared writable exports 2022-05-12 13:10:52 +02:00
blockdev.c Replace qemu_gettimeofday() with g_get_real_time() 2022-04-06 10:50:37 +02:00
blockjob.c assertions for blockjob.h global state API 2022-03-04 18:18:25 +01:00
configure capstone: Remove the capstone submodule 2022-05-18 08:54:22 +02:00
cpu.c util/log: Remove qemu_log_close 2022-04-20 10:51:11 -07:00
cpus-common.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
disas.c disas: Remove old libopcode ppc disassembler 2022-05-09 08:21:05 +02:00
event-loop-base.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
gdbstub.c whpx: Added support for breakpoints and stepping 2022-04-06 14:31:55 +02:00
gitdm.config contrib/gitdm: add a new interns group-map for GSoC/Outreachy work 2021-07-23 17:22:16 +01:00
hmp-commands-info.hx mos6522: add "info via" HMP command for debugging 2022-03-09 09:28:28 +00:00
hmp-commands.hx net/vmnet: update hmp-commands.hx 2022-05-17 16:48:23 +08:00
iothread.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
job-qmp.c progressmeter: protect with a mutex 2021-06-25 14:24:24 +03:00
job.c job.h: assertions in the callers of JobDriver function pointers 2022-03-04 18:18:26 +01:00
memory_ldst.c.inc exec/memory_ldst: Use correct type sizes 2021-05-26 08:35:51 -07:00
meson.build * Remove Ubuntu 18.04 containers (not supported anymore) 2022-05-20 08:04:30 -07:00
meson_options.txt * Remove Ubuntu 18.04 containers (not supported anymore) 2022-05-20 08:04:30 -07:00
module-common.c all: Clean up includes 2016-02-04 17:41:30 +00:00
os-posix.c os-posix: replace pipe()+cloexec with g_unix_open_pipe(CLOEXEC) 2022-05-03 15:46:17 +04:00
os-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary-common.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary.c include: move target page bits declaration to page-vary.h 2022-04-06 14:31:43 +02:00
qemu-bridge-helper.c qemu-bridge-helper: relocate path to default ACL 2020-09-30 19:11:36 +02:00
qemu-edid.c edid: set default resolution to 1280x800 (WXGA) 2022-01-13 10:59:16 +01:00
qemu-img-cmds.hx qemu-img: Unify [-b [-F]] documentation 2022-02-01 13:49:15 +01:00
qemu-img.c qapi: rename BlockDirtyBitmapMergeSource to BlockDirtyBitmapOrStr 2022-04-26 13:13:50 -05:00
qemu-io-cmds.c nbd patches for 2022-03-07 2022-03-09 11:38:29 +00:00
qemu-io.c include: rename qemu-common.h qemu/help-texts.h 2022-04-21 16:58:24 +04:00
qemu-keymap.c qemu-keymap: Add license in generated files 2021-12-17 10:41:50 +01:00
qemu-nbd.c qemu-nbd: Pass max connections to blockdev layer 2022-05-12 13:10:52 +02:00
qemu-options.hx net/vmnet: update qemu-options.hx 2022-05-17 16:48:23 +08:00
qemu.nsi nsis installer: Fix mouse-over descriptions for emulators 2022-03-18 10:55:15 +00:00
qemu.sasl sasl: remove comment about obsolete kerberos versions 2021-06-14 13:28:50 +01:00
replication.c replication: move include out of root directory 2021-05-26 14:49:46 +02:00
trace-events tracing: remove TCG memory access tracing 2022-02-09 12:08:42 +00:00
version.rc configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION 2021-01-02 21:03:37 +01:00

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.


Documentation
=============

Documentation can be found hosted online at
`<https://www.qemu.org/documentation/>`_. The documentation for the
current development version that is available at
`<https://www.qemu.org/docs/master/>`_ is generated from the ``docs/``
folder in the source tree, and is built by `Sphinx
<https://www.sphinx-doc.org/en/master/>_`.


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


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

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

.. code-block:: shell

   git clone https://gitlab.com/qemu-project/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 `style section
<https://www.qemu.org/docs/master/devel/style.html>` of
the Developers Guide.

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

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

The QEMU website is also maintained under source control.

.. code-block:: shell

  git clone https://gitlab.com/qemu-project/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 GitLab issues to track bugs. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

* `<https://gitlab.com/qemu-project/qemu/-/issues>`_

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 GitLab.

For additional information on bug reporting consult:

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


ChangeLog
=========

For version history and release notes, please visit
`<https://wiki.qemu.org/ChangeLog/>`_ or look at the git history for
more detailed information.


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://wiki.qemu.org/Contribute/StartHere>`_