QEMU With E2K User Support
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Igor Mammedov 9cc5a90b0e x68: acpi: trigger SMI before sending hotplug Notify event to OSPM
In case firmware has negotiated CPU hotplug SMI feature, generate
AML to describe SMI IO port region and send SMI to firmware
on each CPU hotplug SCI in case new CPUs were hotplugged.

Since new CPUs can be hotplugged while CPU_SCAN_METHOD is running
we can't send SMI before new CPUs are fetched from QEMU as it
could cause sending Notify to a CPU that firmware hasn't seen yet.
So fetch new CPUs into local cache first, then send SMI and
after that send Notify events to cached CPUs. This should ensure
that Notify is sent only to CPUs which were processed by firmware
first.
Any CPUs that were hotplugged after caching will be processed
by the next CPU_SCAN_METHOD, when pending SCI is handled.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200923094650.1301166-10-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-09-29 02:15:24 -04:00
.github
.gitlab-ci.d gitlab-ci: Add cross-compiling build tests 2020-09-07 12:34:17 +02:00
accel qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
audio Pull request 2020-09-24 18:48:45 +01:00
authz qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE 2020-09-18 14:12:32 -04:00
backends cryptodev-backend: Register "chardev" as class property 2020-09-22 16:46:09 -04:00
block qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
bsd-user
capstone@22ead3e0bf
chardev util: rename qemu_open() to qemu_open_old() 2020-09-16 10:33:48 +01:00
contrib qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
crypto qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE 2020-09-18 14:12:32 -04:00
default-configs hw/arm: Add two NPCM7xx-based machines 2020-09-14 14:24:58 +01:00
disas disas/: fix some comment spelling errors 2020-09-17 20:40:08 +02:00
docs cphp: remove deprecated cpu-add command(s) 2020-09-29 02:14:30 -04:00
dtc@85e5d83984
dump qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
fpu
fsdev Pull request trivial patches 20200919 2020-09-22 15:42:23 +01:00
gdb-xml
hw x68: acpi: trigger SMI before sending hotplug Notify event to OSPM 2020-09-29 02:15:24 -04:00
include x86: acpi: introduce the PCI0.SMI0 ACPI device 2020-09-29 02:15:24 -04:00
io qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE 2020-09-18 14:12:32 -04:00
libdecnumber qemu/: fix some comment spelling errors 2020-09-17 20:35:43 +02:00
linux-headers linux headers: sync to 5.9-rc4 2020-09-29 02:14:29 -04:00
linux-user qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
meson@68ed748f84
migration Trivial Patches Pull request 20200928 2020-09-28 14:03:09 +01:00
monitor monitor: Use LOCK_GUARD macros 2020-09-25 12:45:58 +01:00
nbd nbd: Use CAF when looking for dirty bitmap 2020-09-07 12:31:31 +02:00
net Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pc-bios seabios: add bios-microvm.bin binary 2020-09-17 14:16:19 +02:00
plugins
po
python/qemu
qapi cphp: remove deprecated cpu-add command(s) 2020-09-29 02:14:30 -04:00
qga qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
qobject qemu/: fix some comment spelling errors 2020-09-17 20:35:43 +02:00
qom Pull request 2020-09-24 18:48:45 +01:00
replay
roms seabios: add microvm config, update build rules 2020-09-17 14:16:19 +02:00
scripts qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
scsi qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
slirp@ce94eba204
softmmu qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
storage-daemon
stubs monitor: simplify functions for getting a dup'd fdset entry 2020-09-16 10:33:48 +01:00
target Pull request 2020-09-24 18:48:45 +01:00
tcg qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
tests tests: acpi: mark to be changed tables in bios-tables-test-allowed-diff 2020-09-29 02:15:24 -04:00
tools virtiofsd: Add -o allow_direct_io|no_allow_direct_io options 2020-09-25 12:45:58 +01:00
trace meson: use meson datadir instead of qemu_datadir 2020-09-01 08:51:33 -04:00
ui audio: remove qemu_spice_audio_init() 2020-09-23 08:36:50 +02:00
util util/hexdump: introduce qemu_hexdump_line() 2020-09-29 02:14:30 -04:00
.cirrus.yml cirrus: Building freebsd in a single shot 2020-09-16 12:15:07 +02:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitignore Add *.pyc back to the .gitignore file 2020-09-23 19:09:56 +02:00
.gitlab-ci.yml configure: add [lm32|unicore32]-softmmu to deprecation logic 2020-09-16 10:07:01 +01:00
.gitmodules gitmodules: add qemu.org vbootrom submodule 2020-09-23 13:44:59 +01:00
.gitpublish
.mailmap mailmap: Add entry for Greg Kurz 2020-09-01 11:13:02 +02:00
.patchew.yml
.readthedocs.yml
.shippable.yml configure: add [lm32|unicore32]-softmmu to deprecation logic 2020-09-16 10:07:01 +01:00
.travis.yml gitlab: create a build-deprecated target 2020-09-16 10:07:01 +01:00
block.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
blockdev-nbd.c
blockdev.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
blockjob.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
bootdevice.c
Changelog qemu/: fix some comment spelling errors 2020-09-17 20:35:43 +02:00
CODING_STYLE.rst CODING_STYLE.rst: flesh out our naming conventions. 2020-09-10 10:34:58 +01:00
configure configure: Fix build dependencies with vhost-vdpa. 2020-09-29 02:15:24 -04:00
COPYING
COPYING.LIB
cpus-common.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
device_tree.c
disas.c
dma-helpers.c
exec-vary.c
exec.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
gdbstub.c
gitdm.config
hmp-commands-info.hx
hmp-commands.hx cphp: remove deprecated cpu-add command(s) 2020-09-29 02:14:30 -04:00
iothread.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
job-qmp.c
job.c
Kconfig
Kconfig.host configure: Fix build dependencies with vhost-vdpa. 2020-09-29 02:15:24 -04:00
LICENSE
MAINTAINERS tests: add test-fdmon-epoll 2020-09-23 13:45:52 +01:00
Makefile Makefile: remove obsolete edk2 exception from "clean" rule 2020-09-13 23:03:14 +02:00
memory_ldst.c.inc
meson_options.txt meson: add description to options 2020-09-01 08:51:44 -04:00
meson.build configure: Fix build dependencies with vhost-vdpa. 2020-09-29 02:15:24 -04:00
module-common.c
os-posix.c util: rename qemu_open() to qemu_open_old() 2020-09-16 10:33:48 +01:00
os-win32.c
qdev-monitor.c
qemu-bridge-helper.c
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c bitmaps patches for 2020-09-21 2020-09-23 15:11:38 +01:00
qemu-io-cmds.c
qemu-io.c block: add missing socket_init() calls to tools 2020-09-02 16:47:39 -05:00
qemu-keymap.c
qemu-nbd.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx manual: escape backslashes in "parsed-literal" blocks 2020-09-16 10:52:34 +02:00
qemu-seccomp.c seccomp: fix killing of whole process instead of thread 2020-09-15 12:56:26 +02:00
qemu.nsi
qemu.sasl
README.rst
replication.c
replication.h
thunk.c
tpm.c
trace-events trace-events: Fix attribution of trace points to source 2020-09-09 17:17:58 +01:00
VERSION
version.rc
version.texi.in

===========
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>`_