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Alberto Faria 1c95dc914a block: Implement blk_pwrite_zeroes() using generated_co_wrapper
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-13-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
2022-07-12 12:14:56 +02:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates
.gitlab-ci.d gitlab-ci/cirrus: Update freebsd to python 3.9 packages 2022-07-12 13:21:02 +05:30
accel accel/tcg: Fix unaligned stores to s390x low-address-protected lowcore 2022-07-12 10:43:33 +05:30
audio introduce -audio as a replacement for -soundhw 2022-05-14 12:33:44 +02:00
authz
backends crypto: Introduce RSA algorithm 2022-06-16 12:54:58 -04:00
block block: Implement blk_pwrite_zeroes() using generated_co_wrapper 2022-07-12 12:14:56 +02:00
bsd-user bsd-user: Remove stray 'inline' from do_bsd_close 2022-07-02 07:52:48 -06:00
chardev QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
common-user common-user: Only compile the common user code if have_user is set 2022-06-28 11:12:05 +02:00
configs default-configs: Add loongarch linux-user support 2022-07-04 11:08:58 +05:30
contrib contrib/vhost-user-blk: fix 32 bit build and enable 2022-06-27 18:53:18 -04:00
crypto crypto: Make block callbacks return 0 on success 2022-07-12 12:14:55 +02:00
disas disas: Remove libvixl disassembler 2022-07-05 10:15:49 +02:00
docs target/arm: Enable SME for -cpu max 2022-07-11 13:43:51 +01:00
dtc@b6910bec11
dump dump/win_dump: add 32-bit guest Windows support 2022-04-22 13:41:56 +04:00
ebpf ebpf: replace deprecated bpf_program__set_socket_filter 2022-07-06 11:39:09 +08:00
fpu softfloat: Use FloatRelation for fracN_cmp 2022-04-26 20:01:55 -07:00
fsdev Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
gdb-xml target/loongarch: Add gdb support. 2022-06-06 18:14:13 +00:00
hw block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
include block: Implement blk_pwrite_zeroes() using generated_co_wrapper 2022-07-12 12:14:56 +02:00
io io: add a QIOChannelNull equivalent to /dev/null 2022-06-22 18:11:21 +01:00
libdecnumber
linux-headers linux-headers: Add vduse.h 2022-06-24 17:07:06 +02:00
linux-user linux-user/aarch64: Add SME related hwcap entries 2022-07-11 13:43:52 +01:00
meson@12f9f04ba0
migration block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
monitor migration: Change zero_copy_send from migration parameter to migration capability 2022-06-22 18:11:17 +01:00
nbd block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
net net/vmnet: implement bridged mode (vmnet-bridged) 2022-05-17 16:48:23 +08:00
pc-bios pc-bios/s390-ccw: Update the s390-ccw bios binaries with the virtio-blk fixes 2022-07-06 18:37:46 +02:00
plugins Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
po po: add ukrainian translation 2022-07-05 10:15:49 +02:00
python Fix 'writeable' typos 2022-06-08 19:38:47 +01:00
qapi trivial patches pull request 20220629 2022-06-30 04:49:40 +05:30
qga meson: qga: do not use deprecated meson.build_root() 2022-06-06 16:04:08 +02:00
qobject include/qapi: add g_autoptr support for qobject types 2022-04-06 10:50:38 +02:00
qom include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
replay replay: simplify async event processing 2022-06-06 09:26:53 +02:00
roms New SeaBIOS-hppa version 6 2022-05-26 12:54:29 +02:00
scripts * Fix memory leak in test-cutils 2022-07-05 18:06:11 +05:30
scsi QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
semihosting semihosting: Create semihost_sys_poll_one 2022-06-28 04:41:37 +05:30
slirp@9d59bb775d slirp: bump submodule past 4.7 release 2022-05-12 12:29:44 +02:00
softmmu vga: avoid crash if no default vga card 2022-06-28 10:43:05 +02:00
storage-daemon vduse-blk: Add name option 2022-06-24 17:07:06 +02:00
stubs hw/i386/xen/xen-hvm: Inline xen_piix_pci_write_config_client() and remove it 2022-06-29 00:24:59 +02:00
subprojects libvhost-user: Fix VHOST_USER_ADD_MEM_REG reply 2022-06-27 18:53:18 -04:00
target target/arm: Enable SME for user-only 2022-07-11 13:43:52 +01:00
tcg tcg: Fix returned type in alloc_code_gen_buffer_splitwx_memfd() 2022-07-12 10:30:10 +05:30
tests block: Implement blk_pwrite_zeroes() using generated_co_wrapper 2022-07-12 12:14:56 +02:00
tools Trivial: 3 char repeat typos 2022-06-28 11:06:02 +02:00
trace
ui ui/cocoa: Fix clipboard text release 2022-07-01 12:35:47 +02:00
util trivial patches pull request 20220629 2022-06-30 04:49:40 +05:30
.cirrus.yml cirrus/win32: upgrade mingw base packages 2022-05-09 08:21:14 +02:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitattributes
.gitignore
.gitlab-ci.yml
.gitmodules vfio-user: build library 2022-06-15 16:42:33 +01:00
.gitpublish
.mailmap MAINTAINERS/.mailmap: update email for Leif Lindholm 2022-05-09 11:47:53 +01:00
.patchew.yml
.readthedocs.yml
.travis.yml
block.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
blockdev-nbd.c nbd/server: Allow MULTI_CONN for shared writable exports 2022-05-12 13:10:52 +02:00
blockdev.c Replace qemu_gettimeofday() with g_get_real_time() 2022-04-06 10:50:37 +02:00
blockjob.c
configure * statistics subsystem 2022-06-16 07:13:04 -07:00
COPYING
COPYING.LIB
cpu.c util/log: Remove qemu_log_close 2022-04-20 10:51:11 -07:00
cpus-common.c
disas.c disas: Remove libvixl disassembler 2022-07-05 10:15:49 +02:00
event-loop-base.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
gdbstub.c gdbstub: Adjust gdb_syscall_complete_cb declaration 2022-06-28 04:35:52 +05:30
gitdm.config
hmp-commands-info.hx hmp: add filtering of statistics by name 2022-06-14 16:50:30 +02:00
hmp-commands.hx block: add more commands to preconfig mode 2022-06-14 16:50:30 +02:00
iothread.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
job-qmp.c
job.c
Kconfig
Kconfig.host vfio-user: build library 2022-06-15 16:42:33 +01:00
LICENSE
MAINTAINERS disas: Remove libvixl disassembler 2022-07-05 10:15:49 +02:00
Makefile build: include pc-bios/ part in the ROMS variable 2022-06-15 11:12:32 +02:00
memory_ldst.c.inc
meson_options.txt vduse-blk: Implement vduse-blk export 2022-06-24 17:07:06 +02:00
meson.build meson.build: Require a recent version of libpng 2022-07-05 10:15:49 +02:00
module-common.c
os-posix.c os-posix: replace pipe()+cloexec with g_unix_open_pipe(CLOEXEC) 2022-05-03 15:46:17 +04:00
os-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary-common.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary.c include: move target page bits declaration to page-vary.h 2022-04-06 14:31:43 +02:00
qemu-bridge-helper.c
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c block: Change blk_pwrite_compressed() param order 2022-07-12 12:14:56 +02:00
qemu-io-cmds.c block: Change blk_pwrite_compressed() param order 2022-07-12 12:14:56 +02:00
qemu-io.c include: move qemu_*_exec_dir() to cutils 2022-05-28 11:42:56 +02:00
qemu-keymap.c
qemu-nbd.c qemu-nbd: Pass max connections to blockdev layer 2022-05-12 13:10:52 +02:00
qemu-options.hx hw/cxl: Make the CXL fixed memory window setup a machine parameter. 2022-06-09 19:32:49 -04:00
qemu.nsi
qemu.sasl
README.rst
replication.c
trace-events
VERSION Open 7.1 development tree 2022-04-19 18:21:23 -07:00
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>`_