QEMU main repository: Please see http://wiki.qemu.org/Contribute/SubmitAPatch for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org
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Stacey Son ce6c541dcb bsd-user:Add AArch64 improvements and signal handling functions
Added get_ucontext_sigreturn function to check processor state ensuring current execution mode is EL0 and no flags
indicating interrupts or exceptions are set.
Updated AArch64 code to use CF directly without reading/writing the entire processor state, improving efficiency.
Changed FP data structures to use Int128 instead of __uint128_t, leveraging QEMU's generic mechanism for referencing this type.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240707191128.10509-9-itachis@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2024-07-23 10:50:54 -06:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates .gitlab/issue_templates: Move suggestions into comments 2022-12-15 15:19:24 +01:00
.gitlab-ci.d testing: bump to latest libvirt-ci 2024-07-22 09:06:17 +01:00
accel accel/tcg: Export set/clear_helper_retaddr 2024-07-23 15:19:39 +10:00
audio ui: add more tracing for dbus 2024-07-22 12:47:28 +04:00
authz error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
backends backends/rng-random: Get rid of qemu_open_old() 2024-07-17 14:04:15 +03:00
block block/curl: rewrite http header parsing function 2024-07-17 14:04:15 +03:00
bsd-user bsd-user:Add AArch64 improvements and signal handling functions 2024-07-23 10:50:54 -06:00
chardev chardev/char-win-stdio.c: restore old console mode 2024-07-22 22:25:46 +04:00
common-user common-user/host/ppc: Implement safe-syscall.inc.S 2023-01-23 14:39:48 -10:00
configs target/loongarch/gdbstub: Add vector registers support 2024-07-19 10:40:04 +08:00
contrib plugins/execlog.c: correct dump of registers values 2024-07-22 09:38:01 +01:00
crypto crypto/block: drop qcrypto_block_open() n_threads argument 2024-06-10 11:05:43 +02:00
disas disas/riscv: Add decode for Zawrs extension 2024-07-18 12:08:44 +10:00
docs plugins/stoptrigger: TCG plugin to stop execution under conditions 2024-07-22 09:37:56 +01:00
dump dump/win_dump: Improve error messages on write error 2024-05-27 12:42:12 +02:00
ebpf ebpf: Added traces back. Changed source set for eBPF to 'system'. 2024-06-04 15:14:26 +08:00
fpu target/sparc: Implement FMAf extension 2024-06-05 09:05:10 -07:00
fsdev configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
gdb-xml target/loongarch/gdbstub: Add vector registers support 2024-07-19 10:40:04 +08:00
gdbstub gdbstub: Re-factor gdb command extensions 2024-07-22 09:37:44 +01:00
host/include util/cpuinfo-riscv: Support host/cpuinfo.h for riscv 2024-07-03 10:24:12 -07:00
hw UI-related for 9.1 2024-07-23 15:23:05 +10:00
include accel/tcg: Export set/clear_helper_retaddr 2024-07-23 15:19:39 +10:00
io Revert "meson: Propagate gnutls dependency" 2024-07-03 18:41:26 +02:00
libdecnumber libdecnumber/dpd/decimal64: Fix compiler warning from Clang 15 2022-11-11 09:13:52 +01:00
linux-headers linux-headers: update to 6.10-rc1 2024-07-01 17:16:04 -04:00
linux-user target/arm: Factor out code for setting MTE TCF0 field 2024-07-05 12:35:14 +01:00
migration migration/postcopy: Add postcopy-recover-setup phase 2024-06-21 09:47:59 -03:00
monitor gdbstub: move enums into separate header 2024-06-24 10:14:17 +01:00
nbd nbd/server: Mark negotiation functions as coroutine_fn 2024-04-25 12:59:19 -05:00
net virtio: features,fixes 2024-07-03 20:54:17 -07:00
pc-bios roms/opensbi: Update to v1.5 2024-07-18 12:08:45 +10:00
plugins accel/tcg: Move qemu_plugin_vcpu_init__async() to plugins/ 2024-07-05 12:34:55 +01:00
po po: add ukrainian translation 2022-07-05 10:15:49 +02:00
python python: enable testing for 3.13 2024-07-12 16:36:20 -04:00
qapi target/s390x: filter deprecated properties based on model expansion type 2024-07-22 13:56:11 +02:00
qga qapi: update prose in note blocks 2024-07-06 08:58:24 +02:00
qobject docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
qom target/sparc/cpu: Rename the CPU models with a "+" in their names 2024-05-05 21:02:47 +01:00
replay replay: Improve error messages about configuration conflicts 2024-03-09 18:56:36 +03:00
roms roms/opensbi: Update to v1.5 2024-07-18 12:08:45 +10:00
scripts trivial patches for 2024-07-17 2024-07-18 10:07:23 +10:00
scsi configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
semihosting semihosting: Restrict to TCG 2024-07-22 09:38:16 +01:00
stats meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
storage-daemon Revert "meson: Propagate gnutls dependency" 2024-07-03 18:41:26 +02:00
stubs meson: Drop the .fa library suffix 2024-07-03 18:41:26 +02:00
subprojects libvhost-user: mask F_INFLIGHT_SHMFD if memfd is not supported 2024-07-02 09:27:56 -04:00
system system/physmem: use return value of ram_block_discard_require() as errno 2024-07-16 20:04:08 +02:00
target accel/tcg: Export set/clear_helper_retaddr 2024-07-23 15:19:39 +10:00
tcg * meson: Pass objects and dependencies to declare_dependency(), not static_library() 2024-07-04 09:16:07 -07:00
tests Maintainer updates for testing, gdbstub, semihosting, plugins 2024-07-23 12:15:11 +10:00
tools ebpf: Add a separate target for skeleton 2024-06-04 15:14:26 +08:00
trace trace: Remove deprecated 'vcpu' field from QMP trace events 2024-06-04 11:53:43 +02:00
ui ui/vdagent: send caps on fe_open 2024-07-22 12:47:28 +04:00
util util/oslib-posix: Fix superfluous trailing semicolon 2024-07-17 14:04:15 +03:00
.dir-locals.el
.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
.git-blame-ignore-revs metadata: add .git-blame-ignore-revs 2023-04-04 15:56:44 +01:00
.gitattributes gitattributes: Cover Objective-C source files 2022-03-29 00:15:14 +02:00
.gitignore configure: rename --enable-pypi to --enable-download, control subprojects too 2023-06-06 16:30:01 +02:00
.gitlab-ci.yml docs: Document GitLab custom CI/CD variables 2021-07-29 07:56:01 +02:00
.gitmodules meson: subprojects: replace berkeley-{soft,test}float-3 with wraps 2023-06-06 16:30:01 +02:00
.gitpublish Add a git-publish configuration file 2018-03-05 09:03:17 +00:00
.mailmap MAINTAINERS: Update Sriram Yagnaraman mail address 2024-04-24 16:03:38 +02:00
.patchew.yml scripts/checkpatch: roll diff tweaking into checkpatch itself 2021-06-25 10:08:33 +01:00
.readthedocs.yml readthodocs: fully specify a build environment 2024-01-12 13:23:48 +00:00
.travis.yml .travis.yml: Install python3-tomli in all build jobs 2024-07-02 09:47:47 +02:00
block.c block: Parse filenames only when explicitly requested 2024-07-02 18:12:30 +02:00
blockdev-nbd.c qapi block: Elide redundant has_FOO in generated C 2022-12-14 20:03:25 +01:00
blockdev.c qapi: blockdev-backup: add discard-source parameter 2024-05-28 15:52:15 +03:00
blockjob.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
configure tests/tcg/aarch64: Add MTE gdbstub tests 2024-07-05 12:35:36 +01:00
COPYING
COPYING.LIB COPYING.LIB: Synchronize the LGPL 2.1 with the version from gnu.org 2019-01-30 11:01:22 +01:00
cpu-common.c cpu: Free queued CPU work 2024-07-16 12:47:44 +02:00
cpu-target.c cpu-target: don't set cpu->thread_id to bogus value 2024-06-04 10:02:39 +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
gitdm.config contrib/gitdm: add group map for AMD 2023-03-22 15:08:26 +00:00
hmp-commands-info.hx hmp-commands-info.hx: Add missing info command for stats subcommand 2024-06-30 19:51:44 +03:00
hmp-commands.hx hmp/migration: Fix "migrate" command's documentation 2024-05-08 09:22:37 -03:00
iothread.c iothread: Simplify expression in qemu_in_iothread() 2024-02-13 10:59:25 +03:00
job-qmp.c qapi job: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
job.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
Kconfig meson: Introduce target-specific Kconfig 2021-07-09 18:21:34 +02:00
Kconfig.host kconfig: express dependency of individual boards on libfdt 2024-05-10 15:45:15 +02:00
LICENSE tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing 2019-11-11 15:11:21 +01:00
MAINTAINERS tests/avocado: Remove non-working sparc leon3 test 2024-07-22 09:06:17 +01:00
Makefile Makefile: fix use of -j without an argument 2024-04-12 12:02:12 +02:00
meson_options.txt meson: remove dead optimization option 2024-06-28 14:44:51 +02:00
meson.build ui/cocoa: Add cursor composition 2024-07-16 20:04:08 +02:00
module-common.c all: Clean up includes 2016-02-04 17:41:30 +00:00
os-posix.c os-posix: Expand setrlimit() syscall compatibility 2024-06-30 19:51:44 +03:00
os-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-target.c exec: Expose 'target_page.h' API to user emulation 2024-04-26 15:28:11 +02:00
page-vary-common.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary-target.c exec: Rename target specific page-vary.c -> page-vary-target.c 2023-10-04 11:03:54 -07:00
pythondeps.toml Python: bump minimum sphinx version to 3.4.3 2024-07-12 16:36:20 -04:00
qemu-bridge-helper.c qemu-bridge-helper: relocate path to default ACL 2020-09-30 19:11:36 +02:00
qemu-edid.c qemu-edid: Restrict input parameter -d to avoid division by zero 2022-10-12 13:38:15 +02:00
qemu-img-cmds.hx docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
qemu-img.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-io-cmds.c qemu-io: add cvtnum() error handling for zone commands 2024-06-10 11:05:43 +02:00
qemu-io.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-keymap.c qemu-keymap: Make references to allocations static 2024-05-29 12:41:56 +02:00
qemu-nbd.c qemu-nbd: mention --tls-hostname option in qemu-nbd --help 2024-02-13 10:59:25 +03:00
qemu-options.hx trivial patches for 2024-07-17 2024-07-18 10:07:23 +10:00
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
README.rst README.rst: add the missing punctuations 2024-07-17 14:04:15 +03:00
replication.c replication: move include out of root directory 2021-05-26 14:49:46 +02:00
trace-events tracepoints: move physmem trace points 2024-07-05 12:33:37 +01:00
VERSION Open 9.1 development tree 2024-04-23 17:33:36 -07:00
version.rc configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION 2021-01-02 21:03:37 +01:00

===========
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>`_