Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
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Paolo Bonzini 245edd0cfb target/i386: handle filtered_features in a new function mark_unavailable_features
The next patch will add a different reason for filtering features, unrelated
to host feature support.  Extract a new function that takes care of disabling
the features and optionally reporting them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-04 18:49:19 +02:00
accel accel/kvm: ensure ret always set 2019-10-03 12:48:42 +02:00
audio audio: split ctl_* functions into enable_* and volume_* 2019-09-23 12:28:47 +02:00
authz
backends virtio,vhost,pc: features, fixes, cleanups. 2019-09-17 16:24:08 +01:00
block cutils: Move size_to_str() from "qemu-common.h" to "qemu/cutils.h" 2019-09-19 11:57:34 +02:00
bsd-user
capstone@22ead3e0bf
chardev socket: Add num connections to qio_net_listener_open_sync() 2019-09-03 23:24:42 +02:00
contrib virtio,vhost: fixes, features, cleanups. 2019-09-04 17:22:34 +01:00
crypto qcrypto-luks: more rigorous header checking 2019-09-26 16:34:02 +01:00
default-configs ipmi: Add an SMBus IPMI interface 2019-09-20 14:08:10 -05:00
disas cris: do not leak struct cris_disasm_data 2019-10-04 18:49:17 +02:00
docs docs/devel: add "check-tcg" to testing.rst 2019-09-26 19:00:53 +01:00
dtc@88f18909db
dump
fpu
fsdev
gdb-xml
hw memory: allow memory_region_register_iommu_notifier() to fail 2019-10-04 18:49:18 +02:00
include memory: allow memory_region_register_iommu_notifier() to fail 2019-10-04 18:49:18 +02:00
io socket: Add num connections to qio_net_listener_open_sync() 2019-09-03 23:24:42 +02:00
libdecnumber
linux-headers i386/kvm: support guest access CORE cstate 2019-09-16 12:32:20 +02:00
linux-user target-arm queue: 2019-09-30 11:02:22 +01:00
migration migration/postcopy: Recognise the recovery states as 'in_postcopy' 2019-09-25 15:51:19 +01:00
monitor
nbd nbd: Grab aio context lock in more places 2019-09-24 07:30:19 -05:00
net trace: Remove trailing newline in events 2019-09-18 10:19:47 +01:00
pc-bios Small fixes for the s390-ccw firmware 2019-09-23 09:12:39 +02:00
po
python/qemu Replace '-machine accel=xyz' with '-accel xyz' 2019-09-19 12:01:48 +02:00
qapi qapi: Clean up member name case checking 2019-09-28 17:17:18 +02:00
qga socket: Add backlog parameter to socket_listen 2019-09-03 23:24:42 +02:00
qobject
qom
replay
roms riscv: roms: Update default bios for sifive_u machine 2019-09-17 08:42:49 -07:00
scripts qapi: Improve source file read error handling 2019-09-28 17:17:48 +02:00
scsi qemu-pr-helper: fix crash in mpath_reconstruct_sense 2019-10-03 12:58:02 +02:00
slirp@126c04acba
stubs
target target/i386: handle filtered_features in a new function mark_unavailable_features 2019-10-04 18:49:19 +02:00
tcg Allow page table bit to swap endianness. 2019-09-04 16:29:18 +01:00
tests tests/docker: only enable ubsan for test-clang 2019-10-04 18:49:19 +02:00
trace tcg: TCGMemOp is now accelerator independent MemOp 2019-09-03 08:30:38 -07:00
ui vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
util win32: work around main-loop busy loop on socket/fd event 2019-10-04 18:49:18 +02:00
.cirrus.yml
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitignore build: Don't ignore qapi-visit-core.c 2019-09-19 12:14:04 +02:00
.gitlab-ci.yml gitlab-ci.yml: Install libattr-devel and libcap-devel to test virtio-9p 2019-09-05 16:00:01 +02:00
.gitmodules
.gitpublish
.mailmap .mailmap/aliases: add some further commentary 2019-09-02 10:52:22 +01:00
.patchew.yml
.shippable.yml tests/docker: add debian-amd64-cross for non-x86 hosts 2019-09-10 14:14:31 +01:00
.travis.yml travis.yml: Install libcap-dev for testing virito-9p 2019-09-10 14:14:32 +01:00
arch_init.c
balloon.c
block.c block: fix permission update in bdrv_replace_node 2019-09-03 14:55:35 +02:00
blockdev-nbd.c nbd: Grab aio context lock in more places 2019-09-24 07:30:19 -05:00
blockdev.c
blockjob.c blockjob: update nodes head while removing all bdrv 2019-09-16 15:31:12 +02:00
bootdevice.c
bt-host.c
bt-vhci.c
Changelog
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-09-05 14:41:00 +01:00
configure configure: Remove s390 (31-bit mode) from the list of supported CPUs 2019-09-30 13:51:50 +02:00
COPYING
COPYING.LIB
cpus-common.c
cpus.c cpus: Fix throttling during vm_stop 2019-09-16 17:13:07 +02:00
device_tree.c
device-hotplug.c
disas.c
dma-helpers.c
exec.c memory: allow memory_region_register_iommu_notifier() to fail 2019-10-04 18:49:18 +02:00
gdbstub.c gdbstub: Fix handler for 'F' packet 2019-08-28 10:11:15 +01:00
gitdm.config
hmp-commands-info.hx riscv: hmp: Add a command to show virtual memory mappings 2019-09-17 08:42:43 -07:00
hmp-commands.hx
ioport.c
iothread.c
job-qmp.c
job.c job: drop job_drain 2019-09-10 08:58:43 +02:00
Kconfig.host
LICENSE
MAINTAINERS MAINTAINERS: Update S390 PCI Maintainer 2019-09-30 13:51:49 +02:00
Makefile configure: preserve PKG_CONFIG for subdir builds 2019-09-26 19:00:53 +01:00
Makefile.objs loader: Trace loaded images 2019-09-18 10:18:51 +01:00
Makefile.target tests/tcg: cleanup Makefile inclusions 2019-09-10 09:38:33 +01:00
memory_ldst.inc.c memory: Single byte swap along the I/O path 2019-09-03 08:30:39 -07:00
memory_mapping.c
memory.c memory: allow memory_region_register_iommu_notifier() to fail 2019-10-04 18:49:18 +02:00
module-common.c
os-posix.c
os-win32.c
qdev-monitor.c qdev/machine: Introduce hotplug_allowed hook 2019-09-16 06:57:24 -04:00
qemu-bridge-helper.c
qemu-deprecated.texi Replace '-machine accel=xyz' with '-accel xyz' 2019-09-19 12:01:48 +02:00
qemu-doc.texi qemu-ga: Convert invocation documentation to rST 2019-09-13 16:05:01 +01:00
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c block: Use QEMU_IS_ALIGNED 2019-09-16 14:48:30 +02:00
qemu-img.texi
qemu-io-cmds.c qemu-io: Don't leak pattern file in error path 2019-09-13 12:18:37 +02:00
qemu-io.c
qemu-keymap.c
qemu-nbd.c nbd: Prepare for NBD_CMD_FLAG_FAST_ZERO 2019-09-05 16:03:13 -05:00
qemu-nbd.texi
qemu-option-trace.texi
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx audio: documentation fixes. 2019-09-24 13:51:51 +01:00
qemu-seccomp.c
qemu-tech.texi
qemu.nsi win32: fix README file in NSIS installer 2019-09-16 12:32:21 +02:00
qemu.sasl
qtest.c
README.rst docs: merge HACKING.rst contents into CODING_STYLE.rst 2019-09-05 14:27:06 +01:00
replication.c
replication.h
rules.mak
thunk.c
tpm.c
trace-events exec: Adjust notdirty tracing 2019-09-25 10:38:07 -07:00
VERSION
version.rc
vl.c Disallow colons in the parameter of "-accel" 2019-10-01 11:54:17 +02:00

===========
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.


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>`_


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>`_