QEMU With E2K User Support
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Peter Maydell b9c4a2018a Block layer patches
- virtio-blk: Multiqueue fixes and cleanups
 - blklogwrites: Fixes for write_zeroes and superblock update races
 - commit/stream: Allow users to request only format driver names in
   backing file format
 - monitor: only run coroutine commands in qemu_aio_context
 - Some iotest fixes
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- virtio-blk: Multiqueue fixes and cleanups
- blklogwrites: Fixes for write_zeroes and superblock update races
- commit/stream: Allow users to request only format driver names in
  backing file format
- monitor: only run coroutine commands in qemu_aio_context
- Some iotest fixes

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# gpg: Signature made Fri 26 Jan 2024 12:26:20 GMT
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
  iotests/277: Use iotests.sock_dir for socket creation
  iotests/iothreads-stream: Use the right TimeoutError
  tests/unit: Bump test-replication timeout to 60 seconds
  iotests/264: Use iotests.sock_dir for socket creation
  block/blklogwrites: Protect mutable driver state with a mutex.
  virtio-blk: always set ioeventfd during startup
  virtio-blk: tolerate failure to set BlockBackend AioContext
  virtio-blk: restart s->rq reqs in vq AioContexts
  virtio-blk: rename dataplane to ioeventfd
  virtio-blk: rename dataplane create/destroy functions
  virtio-blk: move dataplane code into virtio-blk.c
  monitor: only run coroutine commands in qemu_aio_context
  iotests: port 141 to Python for reliable QMP testing
  iotests: add filter_qmp_generated_node_ids()
  stream: Allow users to request only format driver names in backing file format
  commit: Allow users to request only format driver names in backing file format
  string-output-visitor: Fix (pseudo) struct handling
  block/blklogwrites: Fix a bug when logging "write zeroes" operations.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-01-26 13:10:31 +00:00
.github/workflows
.gitlab/issue_templates .gitlab/issue_templates: Move suggestions into comments 2022-12-15 15:19:24 +01:00
.gitlab-ci.d testing and misc updates 2024-01-12 14:02:53 +00:00
accel HW core patch queue 2024-01-19 11:39:38 +00:00
audio Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
authz error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
backends backends/cryptodev: Do not ignore throttle/backends Errors 2024-01-19 12:28:59 +01:00
block block/blklogwrites: Protect mutable driver state with a mutex. 2024-01-26 11:16:58 +01:00
bsd-user cli: Remove deprecated '-singlestep' command line option 2024-01-19 11:38:32 +01:00
chardev chardev: use bool for fe_is_open 2024-01-12 13:23:48 +00:00
common-user common-user/host/ppc: Implement safe-syscall.inc.S 2023-01-23 14:39:48 -10:00
configs hw/arm: Add minimal support for the B-L475E-IOT01A board 2024-01-09 14:42:40 +00:00
contrib configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
crypto crypto/rsakey-builtin.c.inc: Clean up two error paths 2023-11-07 14:54:56 +00:00
disas disas/riscv: Add amocas.[w,d,q] instructions 2024-01-10 18:47:47 +10:00
docs docs/interop/bitmaps: Clean up a reference to qemu-qmp-ref 2024-01-26 07:04:53 +01:00
dump system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
ebpf trace-events: Fix the name of the tracing.rst file 2023-09-08 13:08:51 +03:00
fpu fpu: Handle m68k extended precision denormals properly 2023-09-16 14:57:16 +00:00
fsdev configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
gdb-xml gdb-xml: fix duplicate register in arm-neon.xml 2023-11-08 15:15:23 +00:00
gdbstub meson: remove config_targetos 2023-12-31 09:11:28 +01:00
host/include host/include/generic/host/atomic128: Fix compilation problem with Clang 17 2023-11-13 11:35:47 +01:00
hw Block layer patches 2024-01-26 13:10:31 +00:00
include Block layer patches 2024-01-26 13:10:31 +00:00
io io: Stop appending -listen to net listeners 2023-11-07 14:54:56 +00:00
libdecnumber
linux-headers target/loongarch/kvm: Enable LSX/LASX extension 2024-01-25 15:25:31 +08:00
linux-user linux-user/elfload: check PR_GET_DUMPABLE before creating coredump 2024-01-23 13:24:32 +10:00
migration migration/rdma: define htonll/ntohll only if not predefined 2024-01-16 11:16:10 +08:00
monitor monitor: only run coroutine commands in qemu_aio_context 2024-01-26 11:16:58 +01:00
nbd nbd/server: introduce NBDClient->lock to protect fields 2023-12-21 21:59:10 +01:00
net net: handle QIOTask completion to report useful error message 2024-01-11 11:39:26 +01:00
pc-bios target/hppa qemu v8.2 regression fixes 2024-01-16 14:24:42 +00:00
plugins configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
po
python buildsys: Bump known good meson version to v1.2.3 2023-11-24 16:21:55 +01:00
qapi Block layer patches 2024-01-26 13:10:31 +00:00
qga configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
qobject docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
qom qom/object: Limit type names to alphanumerical and some few special characters 2023-12-20 10:29:23 +01:00
replay Pull request 2024-01-09 10:32:23 +00:00
roms target/hppa qemu v8.2 regression fixes 2024-01-16 14:24:42 +00:00
scripts qapi: Fix dangling references to docs/devel/qapi-code-gen.txt 2024-01-26 07:04:53 +01:00
scsi configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
semihosting system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
stats meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
storage-daemon meson: remove config_targetos 2023-12-31 09:11:28 +01:00
stubs system/replay: Restrict icount to system emulation 2024-01-19 12:28:59 +01:00
subprojects vhost-user: Fix protocol feature bit conflict 2023-10-22 05:18:17 -04:00
system - Fix s390x ISM reset 2024-01-20 17:22:16 +00:00
target target/loongarch/kvm: Enable LSX/LASX extension 2024-01-25 15:25:31 +08:00
tcg tcg/arm: Fix SIGILL in tcg_out_qemu_st_direct 2024-01-23 13:32:10 +10:00
tests iotests/277: Use iotests.sock_dir for socket creation 2024-01-26 12:27:41 +01:00
tools ebpf: fix compatibility with libbpf 1.0+ 2023-03-10 17:26:47 +08:00
trace tracing: install trace events file only if necessary 2023-12-27 05:01:55 -05:00
ui Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
util qapi: Fix dangling references to docs/devel/qapi-code-gen.txt 2024-01-26 07:04:53 +01:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.git-blame-ignore-revs metadata: add .git-blame-ignore-revs 2023-04-04 15:56:44 +01:00
.gitattributes
.gitignore configure: rename --enable-pypi to --enable-download, control subprojects too 2023-06-06 16:30:01 +02:00
.gitlab-ci.yml
.gitmodules meson: subprojects: replace berkeley-{soft,test}float-3 with wraps 2023-06-06 16:30:01 +02:00
.gitpublish
.mailmap MAINTAINERS: Leaving Migration 2024-01-04 09:52:42 +08:00
.patchew.yml
.readthedocs.yml readthodocs: fully specify a build environment 2024-01-12 13:23:48 +00:00
.travis.yml travis-ci: Correct invalid mentions of 'softmmu' by 'system' 2023-10-07 19:02:33 +02:00
block.c commit: Allow users to request only format driver names in backing file format 2024-01-26 11:16:58 +01:00
blockdev-nbd.c
blockdev.c stream: Allow users to request only format driver names in backing file format 2024-01-26 11:16:58 +01:00
blockjob.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
configure configure: Add linux header compile support for LoongArch 2024-01-19 12:28:59 +01:00
COPYING
COPYING.LIB
cpu-common.c system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
cpu-target.c cpus: Restrict 'start-powered-off' property to system emulation 2024-01-19 12:28:59 +01:00
event-loop-base.c
gitdm.config contrib/gitdm: add group map for AMD 2023-03-22 15:08:26 +00:00
hmp-commands-info.hx docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
hmp-commands.hx hmp: Remove deprecated 'singlestep' command 2024-01-19 11:38:32 +01:00
iothread.c iothread: Remove unused Error** argument in aio_context_set_aio_params 2024-01-08 10:45:34 -05:00
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
Kconfig.host build-sys: add a "pixman" feature 2023-11-07 14:04:24 +04:00
LICENSE
MAINTAINERS MAINTAINERS: Update hw/core/cpu.c entry 2024-01-19 12:28:59 +01:00
Makefile Makefile: clean qemu-iotests output 2023-12-31 09:11:28 +01:00
memory_ldst.c.inc system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
meson_options.txt meson: fix type of "relocatable" option 2023-12-31 09:11:27 +01:00
meson.build virtio-blk: move dataplane code into virtio-blk.c 2024-01-26 11:16:58 +01:00
module-common.c
os-posix.c os-posix: Clean up global variable shadowing 2023-10-06 13:27:48 +02:00
os-win32.c
page-vary-common.c
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 buildsys: Bump known good meson version to v1.2.3 2023-11-24 16:21:55 +01:00
qemu-bridge-helper.c
qemu-edid.c
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 block: Mark bdrv_get_specific_info() and callers GRAPH_RDLOCK 2023-10-12 16:31:33 +02:00
qemu-io.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-keymap.c qemu-keymap: properly check return from xkb_keymap_mod_get_index 2023-07-03 12:51:21 +01:00
qemu-nbd.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-options.hx - Fix s390x ISM reset 2024-01-20 17:22:16 +00:00
qemu.nsi
qemu.sasl
README.rst
replication.c
trace-events trace-events: remove the remaining vcpu trace events 2023-06-01 11:05:05 -04:00
VERSION Open 9.0 development tree 2023-12-19 09:46:22 -05:00
version.rc

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