README.rst - qemu - Git at Google


            
            ===========

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