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Peter Maydell e566fb8593 * vga: implement odd/even and byte/word/doubleword modes more accurately
* vga: implement horizontal pel panning
 * KVM: add class property to configure KVM device node to use
 * fix various bugs in x86 TCG PC-relative translation
 * properly align huge pages on LoongArch
 * cleanup patches
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* vga: implement odd/even and byte/word/doubleword modes more accurately
* vga: implement horizontal pel panning
* KVM: add class property to configure KVM device node to use
* fix various bugs in x86 TCG PC-relative translation
* properly align huge pages on LoongArch
* cleanup patches

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# gpg: Signature made Thu 18 Jan 2024 09:44:41 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  tests/tcg: Don't #include <inttypes.h> in aarch64/system/vtimer.c
  qemu/osdep: Add huge page aligned support on LoongArch platform
  remove unnecessary casts from uintptr_t
  target/i386: pcrel: store low bits of physical address in data[0]
  target/i386: fix incorrect EIP in PC-relative translation blocks
  target/i386: Do not re-compute new pc with CF_PCREL
  io_uring: move LuringState typedef to block/aio.h
  Add class property to configure KVM device node to use
  vga: sort-of implement word and double-word access modes
  vga: use latches in odd/even mode too
  vga: reindent memory access code
  vga: optimize horizontal pel panning in 256-color modes
  vga: implement horizontal pel panning in graphics modes
  vga: mask addresses in non-VESA modes to 256k
  vga: introduce VGADisplayParams
  vga: use common endian swap macros

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-01-19 11:39:27 +00:00
.github/workflows
.gitlab/issue_templates
.gitlab-ci.d testing and misc updates 2024-01-12 14:02:53 +00:00
accel Add class property to configure KVM device node to use 2024-01-18 10:43:14 +01:00
audio Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
authz
backends backends/iommufd: Remove mutex 2024-01-05 21:25:20 +01:00
block remove unnecessary casts from uintptr_t 2024-01-18 10:43:51 +01:00
bsd-user cpu: Add generic cpu_list() 2024-01-05 16:20:14 +01:00
chardev chardev: use bool for fe_is_open 2024-01-12 13:23:48 +00:00
common-user
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 target-arm queue: 2024-01-18 12:48:17 +00:00
dump system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
ebpf
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 * vga: implement odd/even and byte/word/doubleword modes more accurately 2024-01-19 11:39:27 +00:00
include * vga: implement odd/even and byte/word/doubleword modes more accurately 2024-01-19 11:39:27 +00:00
io io: Stop appending -listen to net listeners 2023-11-07 14:54:56 +00:00
libdecnumber
linux-headers linux-headers: riscv: add ptrace.h 2024-01-10 18:47:47 +10:00
linux-user target/alpha: Remove fallback to ev67 cpu class 2024-01-05 16:20:14 +01:00
migration migration/rdma: define htonll/ntohll only if not predefined 2024-01-16 11:16:10 +08:00
monitor hmp: Improve sync-profile error message 2023-11-17 10:07:52 +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 cpus: stop vm in suspended runstate 2024-01-04 09:52:42 +08:00
qga configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
qobject
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 testing and misc updates 2024-01-12 14:02:53 +00:00
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
storage-daemon meson: remove config_targetos 2023-12-31 09:11:28 +01:00
stubs system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 2024-01-08 10:45:43 -05:00
subprojects vhost-user: Fix protocol feature bit conflict 2023-10-22 05:18:17 -04:00
system Replace "iothread lock" with "BQL" in comments 2024-01-08 10:45:43 -05:00
target * vga: implement odd/even and byte/word/doubleword modes more accurately 2024-01-19 11:39:27 +00:00
tcg tcg/ppc: Use new registers for LQ destination 2024-01-11 08:47:45 +11:00
tests * vga: implement odd/even and byte/word/doubleword modes more accurately 2024-01-19 11:39:27 +00:00
tools
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 remove unnecessary casts from uintptr_t 2024-01-18 10:43:51 +01:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.git-blame-ignore-revs
.gitattributes
.gitignore
.gitlab-ci.yml
.gitmodules
.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 block: remove outdated AioContext locking comments 2023-12-21 22:49:27 +01:00
blockdev-nbd.c
blockdev.c block: remove bdrv_co_lock() 2023-12-21 22:49:27 +01:00
blockjob.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
configure configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +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 cpu: Add generic cpu_list() 2024-01-05 16:20:14 +01:00
event-loop-base.c
gitdm.config
hmp-commands-info.hx docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
hmp-commands.hx docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
iothread.c iothread: Remove unused Error** argument in aio_context_set_aio_params 2024-01-08 10:45:34 -05:00
job-qmp.c
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 docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
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 meson: mitigate against use of uninitialize stack for exploits 2024-01-16 07:25:27 +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-nbd.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-options.hx * vga: implement odd/even and byte/word/doubleword modes more accurately 2024-01-19 11:39:27 +00:00
qemu.nsi
qemu.sasl
README.rst
replication.c
trace-events
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>`_