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Peter Maydell fe16c833fd Migration pull 2022-07-20
This replaces yesterdays pull and:
   a) Fixes some test build errors without TLS
   b) Reenabled the zlib acceleration on s390
      now that we have Ilya's fix
 
   Hyman's dirty page rate limit set
   Ilya's fix for zlib vs migration
   Peter's postcopy-preempt
   Cleanup from Dan
   zero-copy tidy ups from Leo
   multifd doc fix from Juan
   Revert disable of zlib acceleration on s390x
 
 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge tag 'pull-migration-20220720c' of https://gitlab.com/dagrh/qemu into staging

Migration pull 2022-07-20

This replaces yesterdays pull and:
  a) Fixes some test build errors without TLS
  b) Reenabled the zlib acceleration on s390
     now that we have Ilya's fix

  Hyman's dirty page rate limit set
  Ilya's fix for zlib vs migration
  Peter's postcopy-preempt
  Cleanup from Dan
  zero-copy tidy ups from Leo
  multifd doc fix from Juan
  Revert disable of zlib acceleration on s390x

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

# gpg: Signature made Wed 20 Jul 2022 12:18:56 BST
# gpg:                using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* tag 'pull-migration-20220720c' of https://gitlab.com/dagrh/qemu: (30 commits)
  Revert "gitlab: disable accelerated zlib for s390x"
  migration: Avoid false-positive on non-supported scenarios for zero-copy-send
  multifd: Document the locking of MultiFD{Send/Recv}Params
  migration/multifd: Report to user when zerocopy not working
  Add dirty-sync-missed-zero-copy migration stat
  QIOChannelSocket: Fix zero-copy flush returning code 1 when nothing sent
  migration: remove unreachable code after reading data
  tests: Add postcopy preempt tests
  tests: Add postcopy tls recovery migration test
  tests: Add postcopy tls migration test
  tests: Move MigrateCommon upper
  migration: Respect postcopy request order in preemption mode
  migration: Enable TLS for preempt channel
  migration: Export tls-[creds|hostname|authz] params to cmdline too
  migration: Add helpers to detect TLS capability
  migration: Add property x-postcopy-preempt-break-huge
  migration: Create the postcopy preempt channel asynchronously
  migration: Postcopy recover with preempt enabled
  migration: Postcopy preemption enablement
  migration: Postcopy preemption preparation on channel creation
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-20 22:33:35 +01:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates
.gitlab-ci.d Revert "gitlab: disable accelerated zlib for s390x" 2022-07-20 12:15:09 +01:00
accel softmmu/dirtylimit: Implement virtual CPU throttle 2022-07-20 12:15:08 +01:00
audio audio/dbus: fix building 2022-07-08 11:03:36 +02:00
authz
backends crypto: Introduce RSA algorithm 2022-06-16 12:54:58 -04:00
block block: Remove remaining unused symbols in coroutines.h 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 hw/loongarch: Add fdt support 2022-07-19 22:55:10 +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 ui: dbus-display fix, new gtk config options. 2022-07-19 17:40:36 +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 * Fixes for s390x floating point vector instructions 2022-07-20 14:13:32 +01:00
fsdev
gdb-xml target/loongarch: Add gdb support. 2022-06-06 18:14:13 +00:00
hw -----BEGIN PGP SIGNATURE----- 2022-07-20 16:27:57 +01:00
include Migration pull 2022-07-20 2022-07-20 22:33:35 +01:00
io QIOChannelSocket: Fix zero-copy flush returning code 1 when nothing sent 2022-07-20 12:15:09 +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 migration: Avoid false-positive on non-supported scenarios for zero-copy-send 2022-07-20 12:15:09 +01:00
monitor Add dirty-sync-missed-zero-copy migration stat 2022-07-20 12:15:09 +01:00
nbd block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
net net/colo.c: fix segmentation fault when packet is not parsed correctly 2022-07-20 16:58:08 +08:00
pc-bios pc-bios/s390-ccw: add -Wno-array-bounds 2022-07-13 16:58:58 +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 python/qemu/qmp/legacy: Replace 'returns-whitelist' with the correct type 2022-07-18 20:28:06 +02:00
qapi Migration pull 2022-07-20 2022-07-20 22:33:35 +01:00
qga qga: treat get-guest-fsinfo as "best effort" 2022-07-18 20:24:36 +02:00
qobject
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 Replace 'whitelist' with 'allow' 2022-07-18 20:24:36 +02:00
scsi QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
semihosting semihosting: Remove qemu_semihosting_log_out 2022-07-12 22:32:12 +02:00
slirp@9d59bb775d slirp: bump submodule past 4.7 release 2022-05-12 12:29:44 +02:00
softmmu Migration pull 2022-07-20 2022-07-20 22:33:35 +01:00
storage-daemon qsd: Unlink absolute PID file path 2022-07-12 14:30:38 +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 * Fixes for s390x floating point vector instructions 2022-07-20 14:13:32 +01:00
tcg tcg: Fix returned type in alloc_code_gen_buffer_splitwx_memfd() 2022-07-12 10:30:10 +05:30
tests Migration pull 2022-07-20 2022-07-20 22:33:35 +01:00
tools Trivial: 3 char repeat typos 2022-06-28 11:06:02 +02:00
trace
ui gtk: Add show_tabs=on|off command line option. 2022-07-19 14:36:42 +02:00
util util: Fix broken build on Haiku 2022-07-18 20:24:36 +02:00
.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 Revert "gitlab: disable accelerated zlib for s390x" 2022-07-20 12:15:09 +01:00
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
blockjob.c
configure tests/docker/dockerfiles: Add debian-loongarch-cross.docker 2022-07-19 21:53:58 +05:30
COPYING
COPYING.LIB
cpu.c util/log: Remove qemu_log_close 2022-04-20 10:51:11 -07:00
cpus-common.c cpus: Introduce cpu_list_generation_id 2022-07-20 12:15:08 +01:00
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 softmmu/dirtylimit: Implement dirty page rate limit 2022-07-20 12:15:08 +01:00
hmp-commands.hx softmmu/dirtylimit: Implement dirty page rate limit 2022-07-20 12:15:08 +01:00
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 MAINTAINERS: Add myself as Guest Agent co-maintainer 2022-07-18 11:56:09 +03:00
Makefile cutils: Introduce bundle mechanism 2022-07-13 16:58:57 +02:00
memory_ldst.c.inc
meson_options.txt meson: Prefix each element of firmware path 2022-07-13 16:58:57 +02:00
meson.build * SCSI fuzzing fix (Mauro) 2022-07-14 18:14:12 +01:00
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
page-vary-common.c
page-vary.c
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 gtk: Add show_tabs=on|off command line option. 2022-07-19 14:36:42 +02:00
qemu.nsi
qemu.sasl
README.rst
replication.c
trace-events
VERSION
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>`_