-The QEMU x86 emulator
----------------------
+ QEMU README
+ ===========
-INSTALLATION
-------------
+QEMU is a generic and open source machine & userspace emulator and
+virtualizer.
-Type
+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).
- ./configure
- make
+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.
-to build qemu, qemu-CPU and libqemu.a (CPU is the name of the various
-supported target CPUs).
+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.
-Type
+QEMU as a whole is released under the GNU General Public License,
+version 2. For full licensing details, consult the LICENSE file.
- make install
-to install QEMU in /usr/local
+Building
+========
-Tested tool versions
---------------------
+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:
-In order to compile QEMU succesfully, it is very important that you
-have the right tools. The most important one is gcc. I cannot guaranty
-that QEMU works if you do not use a tested gcc version. Look at
-'configure' and 'Makefile' if you want to make a different gcc
-version work.
+ mkdir build
+ cd build
+ ../configure
+ make
-host gcc binutils glibc linux distribution
-----------------------------------------------------------------------
-x86 2.95.2 2.13.2 2.1.3 2.4.18
- 3.2 2.13.2 2.1.3 2.4.18
- 2.96 2.11.93.0.2 2.2.5 2.4.18 Red Hat 7.3
- 3.2.2 2.13.90.0.18 2.3.2 2.4.20 Red Hat 9
+Additional information can also be found online via the QEMU website:
-PowerPC 3.3 [4] 2.13.90.0.18 2.3.1 2.4.20briq
- 3.2
+ http://qemu-project.org/Hosts/Linux
+ http://qemu-project.org/Hosts/Mac
+ http://qemu-project.org/Hosts/W32
-Alpha 3.3 [1] 2.14.90.0.4 2.2.5 2.2.20 [2] Debian 3.0
-Sparc32 2.95.4 2.12.90.0.1 2.2.5 2.4.18 Debian 3.0
+Submitting patches
+==================
-ARM 2.95.4 2.12.90.0.1 2.2.5 2.4.9 [3] Debian 3.0
+The QEMU source code is maintained under the GIT version control system.
-[1] On Alpha, QEMU needs the gcc 'visibility' attribute only available
- for gcc version >= 3.3.
-[2] Linux >= 2.4.20 is necessary for precise exception support
- (untested).
-[3] 2.4.9-ac10-rmk2-np1-cerf2
+ git clone git://git.qemu-project.org/qemu.git
-[4] gcc 2.95.x generates invalid code when using too many register
-variables. You must use gcc 3.x on PowerPC.
+When submitting patches, the preferred 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 HACKING and CODING_STYLE files.
-Documentation
--------------
+Additional information on submitting patches can be found online via
+the QEMU website
-Read the documentation in qemu-doc.html.
+ http://qemu-project.org/Contribute/SubmitAPatch
+ http://qemu-project.org/Contribute/TrivialPatches
-Fabrice Bellard.
\ No newline at end of file
+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:
+
+ http://qemu-project.org/Contribute/ReportABug
+
+
+Contact
+=======
+
+The QEMU community can be contacted in a number of ways, with the two
+main methods being email and IRC
+
+ - qemu-devel@nongnu.org
+ http://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:
+
+ http://qemu-project.org/Contribute/StartHere
+
+-- End
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