QEMU With E2K User Support
Go to file
Richard Henderson b52daaf2c8 Block patches
- Fix padding of unaligned vectored requests to match the host alignment
   for vectors with 1023 or 1024 buffers
 - Refactor and fix bugs in parallels's image check functionality
 - Add an option to the qcow2 driver to retain (qcow2-level) allocations
   on discard requests from the guest (while still forwarding the discard
   to the lower level and marking the range as zero)
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEEy2LXoO44KeRfAE00ofpA0JgBnN8FAmR+AT4SHGhyZWl0ekBy
 ZWRoYXQuY29tAAoJEKH6QNCYAZzfnboQAKD6YrreZLoseomRfqOAoApSf6yOdcHk
 6kfsvzwzjosomsF1Pkzm4851vX5PyDqTdeu0iViM+pxanVO1b494q1P4VcAERqMB
 iZVs68R6M0l6HV9btWFGm+ibHJf4FapdntkIdwog1ka5TIhw5oDWCVNLigjhIoRv
 sM37Bgf14kC3sFTR++0HESsyU1eUP5gJjwJbPZ2IgJBmzYay0is1z5nHA/3VUswu
 8dKnGQDsv62EtlK7PK8cU2BhLOeNi6Wr3bAb6Wf2QLB5e0qRb7oAkqNx5/UcTznk
 a3XMC1aiWhYvM/+DaYIpQUcIPgA8xQ1KHKeD6WjbGfLgZBqseX0aGWMByUsiY8Bo
 +BPIBnUDrbiPnAKB/XLQfnzlE+s7121/JpEbB7AkZqVFRGuw8Wur4tbc2fzvy8Pw
 x/uQfv3ZPi/2Lf6u7hv/TVHubXi8jucVgx3Ubu5Jeo3901S4/KOQBQ4BQ/GYIGQX
 38ijSROcEd0eQJ1mTKPEctouxjSZCghNSbrn9DfsL1V3VWqWNKKGCU3hM+RQ1SJT
 688qvnyYt8QZfTsiDSHR/GfKsufG0DkoqE7c9IhSEPohecAH8Rrc3HcLut7fuwD2
 gCFQhm68CPwwRmBjPCY6Zi1RDzeOyFBSWN31T6t0yTb4OHJ/3/cSZVBJtwwkOVbx
 zwabHDNdY5Kw
 =GuoL
 -----END PGP SIGNATURE-----

Merge tag 'pull-block-2023-06-05' of https://gitlab.com/hreitz/qemu into staging

Block patches

- Fix padding of unaligned vectored requests to match the host alignment
  for vectors with 1023 or 1024 buffers
- Refactor and fix bugs in parallels's image check functionality
- Add an option to the qcow2 driver to retain (qcow2-level) allocations
  on discard requests from the guest (while still forwarding the discard
  to the lower level and marking the range as zero)

# -----BEGIN PGP SIGNATURE-----
#
# iQJGBAABCAAwFiEEy2LXoO44KeRfAE00ofpA0JgBnN8FAmR+AT4SHGhyZWl0ekBy
# ZWRoYXQuY29tAAoJEKH6QNCYAZzfnboQAKD6YrreZLoseomRfqOAoApSf6yOdcHk
# 6kfsvzwzjosomsF1Pkzm4851vX5PyDqTdeu0iViM+pxanVO1b494q1P4VcAERqMB
# iZVs68R6M0l6HV9btWFGm+ibHJf4FapdntkIdwog1ka5TIhw5oDWCVNLigjhIoRv
# sM37Bgf14kC3sFTR++0HESsyU1eUP5gJjwJbPZ2IgJBmzYay0is1z5nHA/3VUswu
# 8dKnGQDsv62EtlK7PK8cU2BhLOeNi6Wr3bAb6Wf2QLB5e0qRb7oAkqNx5/UcTznk
# a3XMC1aiWhYvM/+DaYIpQUcIPgA8xQ1KHKeD6WjbGfLgZBqseX0aGWMByUsiY8Bo
# +BPIBnUDrbiPnAKB/XLQfnzlE+s7121/JpEbB7AkZqVFRGuw8Wur4tbc2fzvy8Pw
# x/uQfv3ZPi/2Lf6u7hv/TVHubXi8jucVgx3Ubu5Jeo3901S4/KOQBQ4BQ/GYIGQX
# 38ijSROcEd0eQJ1mTKPEctouxjSZCghNSbrn9DfsL1V3VWqWNKKGCU3hM+RQ1SJT
# 688qvnyYt8QZfTsiDSHR/GfKsufG0DkoqE7c9IhSEPohecAH8Rrc3HcLut7fuwD2
# gCFQhm68CPwwRmBjPCY6Zi1RDzeOyFBSWN31T6t0yTb4OHJ/3/cSZVBJtwwkOVbx
# zwabHDNdY5Kw
# =GuoL
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 05 Jun 2023 08:37:34 AM PDT
# gpg:                using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg:                issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00  4D34 A1FA 40D0 9801 9CDF

* tag 'pull-block-2023-06-05' of https://gitlab.com/hreitz/qemu:
  qcow2: add discard-no-unref option
  parallels: Incorrect condition in out-of-image check
  parallels: Replace qemu_co_mutex_lock by WITH_QEMU_LOCK_GUARD
  parallels: Move statistic collection to a separate function
  parallels: Move check of leaks to a separate function
  parallels: Fix statistics calculation
  parallels: Move check of cluster outside image to a separate function
  parallels: Move check of unclean image to a separate function
  parallels: Use generic infrastructure for BAT writing in parallels_co_check()
  parallels: create parallels_set_bat_entry_helper() to assign BAT value
  parallels: Fix image_end_offset and data_end after out-of-image check
  parallels: Fix high_off calculation in parallels_co_check()
  parallels: Out of image offset in BAT leads to image inflation
  iotests/iov-padding: New test
  util/iov: Remove qemu_iovec_init_extended()
  block: Collapse padded I/O vecs exceeding IOV_MAX
  util/iov: Make qiov_slice() public

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-05 10:27:31 -07:00
.github/workflows
.gitlab/issue_templates
.gitlab-ci.d gitlab: switch from 'stable' to 'latest' docker container tags 2023-05-31 10:29:14 -07:00
accel accel/tcg: include cs_base in our hash calculations 2023-06-01 11:05:05 -04:00
audio cutils: Adjust signature of parse_uint[_full] 2023-06-02 12:27:19 -05:00
authz
backends hostmem-file: add offset option 2023-05-23 16:47:03 +02:00
block qcow2: add discard-no-unref option 2023-06-05 13:15:42 +02:00
bsd-user *-user: remove the guest_user_syscall tracepoints 2023-06-01 11:03:55 -04:00
chardev chardev: Allow setting file chardev input file on the command line 2023-04-20 06:50:11 +02:00
common-user
configs arm/Kconfig: Keep Kconfig default entries in default.mak as documentation 2023-05-30 15:50:17 +01:00
contrib cutils: Adjust signature of parse_uint[_full] 2023-06-02 12:27:19 -05:00
crypto win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
disas disas/riscv: Decode czero.{eqz,nez} 2023-05-25 13:57:52 +00:00
docs qcow2: Explicit mention of padding bytes 2023-06-02 11:24:18 -05:00
dump *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
ebpf
fpu softfloat: Fix the incorrect computation in float32_exp2 2023-05-05 16:57:48 +01:00
fsdev
gdb-xml Hexagon (gdbstub): add HVX support 2023-05-18 12:40:52 -07:00
gdbstub gdbstub: only send stop-reply packets when allowed to 2023-05-18 12:40:52 -07:00
host/include accel/tcg: Add aarch64 store_atom_insert_al16 2023-05-30 09:51:12 -07:00
hw qemu-sparc queue 2023-06-05 07:20:45 -07:00
include Block patches 2023-06-05 10:27:31 -07:00
io aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
libdecnumber
linux-headers Update linux headers to v6.3rc5 2023-04-28 15:55:55 +02:00
linux-user Hexagon update 2023-05-18 20:44:34 -07:00
migration migration: stop tracking ram writes when cancelling background migration 2023-06-02 01:03:19 +02:00
monitor monitor: do not use mb_read/mb_set 2023-05-25 10:18:33 +02:00
nbd nbd/server: Fix drained_poll to wake coroutine in right AioContext 2023-05-19 19:16:53 +02:00
net igb: Strip the second VLAN tag for extended VLAN 2023-05-23 15:20:15 +08:00
pc-bios update edk2 to 202302 stable tag 2023-03-20 13:43:35 +00:00
plugins include/qemu/plugin: Inline qemu_plugin_disable_mem_helpers 2023-03-22 15:06:57 +00:00
po
python Revert "python/qmp/protocol: add open_with_socket()" 2023-05-31 16:25:35 -04:00
qapi qcow2: add discard-no-unref option 2023-06-05 13:15:42 +02:00
qga meson: fix rule for qemu-ga installer 2023-05-25 10:02:43 +02:00
qobject docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
qom
replay ui: add the infrastructure to support MT events 2023-05-28 13:08:25 +04:00
roms edk2: replace build scripts 2023-03-20 10:36:31 +01:00
scripts trace: remove control-vcpu.h 2023-06-01 11:05:05 -04:00
scsi qemu-pr-helper: mark more coroutine_fns 2023-04-25 13:17:28 +02:00
semihosting
softmmu migration: restore vmstate on migration failure 2023-06-02 01:03:19 +02:00
stats
storage-daemon qapi storage-daemon/qapi: Fix documentation section structure 2023-04-28 11:48:34 +02:00
stubs trace: remove code that depends on setting vcpu 2023-06-01 11:05:05 -04:00
subprojects meson: use subproject for keycodemapdb 2023-05-26 12:34:18 +02:00
target target/arm: Explain why we need to select ARM_V7M 2023-05-30 15:50:17 +01:00
tcg tcg: Remove TCG_TARGET_TLB_DISPLACEMENT_BITS 2023-05-30 09:51:51 -07:00
tests iotests/iov-padding: New test 2023-06-05 13:11:26 +02:00
tools
trace trace: remove control-vcpu.h 2023-06-01 11:05:05 -04:00
ui cutils: Adjust signature of parse_uint[_full] 2023-06-02 12:27:19 -05:00
util util/iov: Remove qemu_iovec_init_extended() 2023-06-05 13:11:24 +02:00
.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 build-sys: add slirp.wrap 2023-04-20 11:17:34 +02:00
.gitlab-ci.yml
.gitmodules meson: use subproject for keycodemapdb 2023-05-26 12:34:18 +02:00
.gitpublish
.mailmap Hexagon (target/hexagon) Change Hexagon maintainer 2023-05-26 07:03:41 -07:00
.patchew.yml
.readthedocs.yml
.travis.yml travis.yml: Add missing 'flex', 'bison' packages to 'GCC (user)' job 2023-04-20 11:24:50 +02:00
block.c aio: remove aio_disable_external() API 2023-05-30 17:37:26 +02:00
blockdev-nbd.c
blockdev.c cutils: Adjust signature of parse_uint[_full] 2023-06-02 12:27:19 -05:00
blockjob.c blockjob: Adhere to rate limit even when reentered early 2023-05-19 19:12:12 +02:00
configure configure: ignore --make 2023-05-26 12:36:20 +02:00
COPYING
COPYING.LIB
cpu.c cpu: Introduce a wrapper for being able to use TARGET_NAME in common code 2023-05-16 09:14:18 +02:00
cpus-common.c cpu: expose qemu_cpu_list_lock for lock-guard use 2023-05-11 09:53:41 +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
hmp-commands.hx build: move COLO under CONFIG_REPLICATION 2023-05-10 18:48:11 +02:00
iothread.c
job-qmp.c
job.c
Kconfig
Kconfig.host
LICENSE
MAINTAINERS block: add blk_io_plug_call() API 2023-06-01 07:34:03 -04:00
Makefile build: rebuild build.ninja using "meson setup --reconfigure" 2023-05-19 20:39:53 +02:00
memory_ldst.c.inc
meson_options.txt Migration Pull request 2023-05-18 11:07:06 -07:00
meson.build qapi: add '@fdset' feature for BlockdevOptionsVirtioBlkVhostVdpa 2023-06-01 11:08:21 -04:00
module-common.c
os-posix.c util/async-teardown: wire up query-command-line-options 2023-05-16 09:14:18 +02:00
os-win32.c
page-vary-common.c
page-vary.c
qemu-bridge-helper.c
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c qemu-img: Take graph lock more selectively 2023-05-19 19:12:12 +02:00
qemu-io-cmds.c qemu-iotests: test zone append operation 2023-05-15 08:18:10 -04:00
qemu-io.c
qemu-keymap.c
qemu-nbd.c block: Take main AioContext lock when calling bdrv_open() 2023-05-30 17:21:23 +02:00
qemu-options.hx qcow2: add discard-no-unref option 2023-06-05 13:15:42 +02:00
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 8.1 development tree 2023-04-20 10:05:25 +01:00
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>`_