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QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org
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![]() * Added several small fixes and cleanups * Added support for vfio-user client device -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEoPZlSPBIlev+awtgUaNDx8/77KEFAmhc+mwACgkQUaNDx8/7 7KHQShAAwGTjc6yzBaFr9DTKaL6Vszwby5tYdV3vWTsnFj2zBks+5BswohxbnYdk Smy5E/F+yCiHI6X4ohI4FRjJgBJplDxZ6bbEgTwZa6ADs7xWAwFWv349KQY9uLpJ XV/ACot2b6FZUskv3w1SxQrpzho4ICm3DuLOdAFAvBPRtxyC2aQMLsXTlT+7+5cC X8zJB/9mtjWIomYWKRXnYUP/uM1g7QLtyU7d01szvqCfSVUilVlg6Ys7RxnqLG0k A1/kxYOrEPHHxMO+YwFuapIfE8Gqihes2K1GfM871JaBT14dMIAZkajmVasbKD16 Iljz89nEV3UehDP9HADhx3QuXO7fhJ3cxcHvTH0xhUeoks3EgTlUq0VNRRYzu6rQ 3P1E3cVaPTmwfoSrhecNIFcln4v/bENdwzYcjh96r9fcFwE+ro4oUTGNKCPYv2t0 yOoc6PqgiZN7DM89/N2hcesgOun7oOVpMnKhiqHjVe53HoM8bfLojWECKNq9Cz1u m0YEHn2gEuEB5l03IguRnAywZq76Jivd6WFmAeXGrHRZ9sfxQCwvImbqMa7QxYpI rt+j7RAyP57WVoBPoW8hlaIQmLuIvIgdWwWkwQd2BTIprLpdHJd4SWkL6eqGozpE rsaHw+WQZqFoddrl7EUSVY/Z2CfIRr1g/Zo5z4RU9YLtxVxjSPw= =sX2P -----END PGP SIGNATURE----- Merge tag 'pull-vfio-20250626' of https://github.com/legoater/qemu into staging vfio queue: * Added several small fixes and cleanups * Added support for vfio-user client device # -----BEGIN PGP SIGNATURE----- # # iQIzBAABCAAdFiEEoPZlSPBIlev+awtgUaNDx8/77KEFAmhc+mwACgkQUaNDx8/7 # 7KHQShAAwGTjc6yzBaFr9DTKaL6Vszwby5tYdV3vWTsnFj2zBks+5BswohxbnYdk # Smy5E/F+yCiHI6X4ohI4FRjJgBJplDxZ6bbEgTwZa6ADs7xWAwFWv349KQY9uLpJ # XV/ACot2b6FZUskv3w1SxQrpzho4ICm3DuLOdAFAvBPRtxyC2aQMLsXTlT+7+5cC # X8zJB/9mtjWIomYWKRXnYUP/uM1g7QLtyU7d01szvqCfSVUilVlg6Ys7RxnqLG0k # A1/kxYOrEPHHxMO+YwFuapIfE8Gqihes2K1GfM871JaBT14dMIAZkajmVasbKD16 # Iljz89nEV3UehDP9HADhx3QuXO7fhJ3cxcHvTH0xhUeoks3EgTlUq0VNRRYzu6rQ # 3P1E3cVaPTmwfoSrhecNIFcln4v/bENdwzYcjh96r9fcFwE+ro4oUTGNKCPYv2t0 # yOoc6PqgiZN7DM89/N2hcesgOun7oOVpMnKhiqHjVe53HoM8bfLojWECKNq9Cz1u # m0YEHn2gEuEB5l03IguRnAywZq76Jivd6WFmAeXGrHRZ9sfxQCwvImbqMa7QxYpI # rt+j7RAyP57WVoBPoW8hlaIQmLuIvIgdWwWkwQd2BTIprLpdHJd4SWkL6eqGozpE # rsaHw+WQZqFoddrl7EUSVY/Z2CfIRr1g/Zo5z4RU9YLtxVxjSPw= # =sX2P # -----END PGP SIGNATURE----- # gpg: Signature made Thu 26 Jun 2025 03:44:44 EDT # gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1 # gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full] # gpg: aka "Cédric Le Goater <clg@kaod.org>" [full] # Primary key fingerprint: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1 * tag 'pull-vfio-20250626' of https://github.com/legoater/qemu: (25 commits) vfio-user: introduce vfio-user protocol specification docs: add vfio-user documentation vfio-user: add coalesced posted writes vfio-user: support posted writes vfio-user: add 'x-msg-timeout' option vfio-user: implement VFIO_USER_DMA_READ/WRITE vfio-user: implement VFIO_USER_DMA_MAP/UNMAP vfio-user: implement VFIO_USER_DEVICE_RESET vfio-user: set up container access to the proxy vfio-user: forward MSI-X PBA BAR accesses to server vfio-user: implement VFIO_USER_DEVICE_GET/SET_IRQ* vfio-user: set up PCI in vfio_user_pci_realize() vfio-user: implement VFIO_USER_REGION_READ/WRITE vfio-user: implement VFIO_USER_DEVICE_GET_REGION_INFO vfio-user: implement VFIO_USER_DEVICE_GET_INFO vfio-user: implement message send infrastructure vfio-user: implement message receive infrastructure vfio-user: connect vfio proxy to remote server vfio-user: add vfio-user class and container vfio/container: fails mdev hotplug if add migration blocker failed ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> |
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README.rst
=========== 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>`_