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Markus Armbruster f1cc129df8 qobject: Use GString instead of QString to accumulate JSON
QString supports modifying its string, but it's quite limited: you can
only append.  The remaining callers use it for building an initial
string, never for modifying it later.

Use of GString for building the initial string is actually more
convenient here.  Change qobject_to_json() & friends to do that.

Once all such uses are replaced this way, QString can become immutable.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-5-armbru@redhat.com>
2020-12-19 10:38:43 +01:00
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.gitlab-ci.d gitlab-ci: Add Xen cross-build jobs 2020-12-09 08:04:34 +01:00
accel tcg: Make CPUClass.debug_excp_handler optional 2020-12-16 15:50:33 -05:00
audio audio: add sanity check 2020-12-15 09:28:52 +01:00
authz authz-simple: Check that 'identity' property is set 2020-11-18 10:51:35 +00:00
backends qdev: Make qdev_get_prop_ptr() get Object* arg 2020-12-15 10:02:07 -05:00
block qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
bsd-user trace: remove argument from trace_init_file 2020-11-11 13:08:09 +00:00
capstone@f8b1b83301
chardev qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
contrib elf2dmp/pdb: Plug memleak in pdb_init_from_file 2020-12-13 23:56:16 +01:00
crypto
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disas nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
docs qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
dtc@85e5d83984
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fpu
fsdev fsdev: open brace '{' following struct go on the same line 2020-12-13 17:46:36 +01:00
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hw qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
include qobject: Use GString instead of QString to accumulate JSON 2020-12-19 10:38:43 +01:00
io
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linux-user linux-user: remove GNUC check 2020-12-15 12:53:14 -05:00
meson@776acd2a80
migration qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
monitor qobject: Make qobject_to_json_pretty() take a pretty argument 2020-12-19 10:38:43 +01:00
nbd * Fixes for compiling on Haiku, and add Haiku VM for compile-testing 2020-11-17 14:12:21 +00:00
net netfilter: Use class properties 2020-12-15 10:02:07 -05:00
pc-bios build: -no-pie is no functional linker flag 2020-12-15 12:53:16 -05:00
plugins plugin: propagate errors 2020-12-15 12:51:56 -05:00
po
python treewide: do not use short-form boolean options 2020-12-10 12:15:11 -05:00
qapi string-output-visitor: Fix to use sufficient precision 2020-12-19 10:37:16 +01:00
qga qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
qobject qobject: Use GString instead of QString to accumulate JSON 2020-12-19 10:38:43 +01:00
qom qobject: Make qobject_to_json_pretty() take a pretty argument 2020-12-19 10:38:43 +01:00
replay
roms qboot: update to latest upstream 2020-11-20 10:48:53 -05:00
scripts scripts/git.orderfile: Keep files with .inc extension sorted 2020-12-15 12:53:16 -05:00
scsi trace: remove argument from trace_init_file 2020-11-11 13:08:09 +00:00
slirp@8f43a99191 slirp: update to fix CVE-2020-29129 CVE-2020-29130 2020-11-27 20:57:11 +04:00
softmmu vl: rename local variable in configure_accelerators 2020-12-15 12:52:06 -05:00
storage-daemon storage-daemon: Call bdrv_close_all() on exit 2020-12-11 17:52:40 +01:00
stubs chardev: do not use machine_init_done 2020-12-15 12:51:51 -05:00
subprojects/libvhost-user libvhost-user: add a simple link test without glib 2020-12-09 13:04:17 -05:00
target qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
tcg
tests qobject: Make qobject_to_json_pretty() take a pretty argument 2020-12-19 10:38:43 +01:00
tools virtiofsd: replace _Static_assert with QEMU_BUILD_BUG_ON 2020-12-15 12:52:10 -05:00
trace qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
ui qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
util qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
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.dir-locals.el
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.exrc
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.gitattributes buildsys: Help git-diff adding .gitattributes config file 2020-11-18 09:33:16 +01:00
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.gitlab-ci.yml pc,pci,virtio: fixes, cleanups 2020-12-09 20:08:54 +00:00
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.mailmap MAINTAINERS: chenhc@lemote.com -> chenhuacai@kernel.org 2020-12-13 16:00:58 +01:00
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.travis.yml gitlab-ci: Move coroutine tests across to gitlab 2020-12-09 08:04:34 +01:00
block.c block: introduce BDRV_MAX_LENGTH 2020-12-11 17:52:40 +01:00
blockdev-nbd.c
blockdev.c blockdev: Fix a memleak in drive_backup_prepare() 2020-12-13 23:56:16 +01:00
blockjob.c
CODING_STYLE.rst CODING_STYLE.rst: Be less strict about 80 character limit 2020-12-13 17:51:33 +01:00
configure build: -no-pie is no functional linker flag 2020-12-15 12:53:16 -05:00
COPYING
COPYING.LIB
cpu.c cpu: Move cpu_common_props to hw/core/cpu.c 2020-12-15 10:02:07 -05:00
cpus-common.c overall/alpha tcg cpus|hppa: Fix Lesser GPL version number 2020-11-15 16:43:54 +01:00
disas.c
exec-vary.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
gdbstub.c gdbstub: Correct misparsing of vCont C/S requests 2020-12-15 12:04:29 +00:00
gitdm.config
hmp-commands-info.hx
hmp-commands.hx monitor: allow quitting while in preconfig state 2020-12-15 12:51:57 -05:00
iothread.c
job-qmp.c
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Kconfig.host
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MAINTAINERS i386: hvf: remove stale MAINTAINERS entry for old hvf stubs 2020-12-16 14:06:53 -05:00
Makefile
memory_ldst.c.inc nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
meson_options.txt fuse: Implement hole detection through lseek 2020-12-11 17:52:40 +01:00
meson.build i386: move kvm accel files into kvm/ 2020-12-16 14:06:52 -05:00
module-common.c
os-posix.c
os-win32.c
qemu-bridge-helper.c
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c qobject: Make qobject_to_json_pretty() take a pretty argument 2020-12-19 10:38:43 +01:00
qemu-io-cmds.c
qemu-io.c trace: remove argument from trace_init_file 2020-11-11 13:08:09 +00:00
qemu-keymap.c
qemu-nbd.c trace: remove argument from trace_init_file 2020-11-11 13:08:09 +00:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx Remove the deprecated -show-cursor option 2020-12-15 12:52:03 -05:00
qemu.nsi
qemu.sasl
README.rst
replication.c
replication.h
thunk.c overall usermode...: Fix Lesser GPL version number 2020-11-15 16:43:40 +01:00
trace-events
VERSION Open 6.0 development tree 2020-12-08 21:04:57 +00:00
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.


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


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

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

.. code-block:: shell

   git clone https://git.qemu.org/git/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 CODING_STYLE.rst file.

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

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

The QEMU website is also maintained under source control.

.. code-block:: shell

  git clone https://git.qemu.org/git/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 Launchpad as its primary upstream bug tracker. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

* `<https://bugs.launchpad.net/qemu/>`_

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:

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