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<!DOCTYPE html> <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Welcome to QEMU’s documentation! — QEMU qemu-kvm-6.2.0-53.module+el8.10.0+2055+8eb7870b.4 documentation</title> <link rel="shortcut icon" href="_static/qemu_32x32.png"/> <link rel="stylesheet" href="_static/css/theme.css" type="text/css" /> <link rel="stylesheet" href="_static/pygments.css" type="text/css" /> <link rel="index" title="Index" href="genindex.html" /> <link rel="search" title="Search" href="search.html" /> <link rel="next" title="About QEMU" href="about/index.html" /> <script src="_static/js/modernizr.min.js"></script> </head> <body class="wy-body-for-nav"> <div class="wy-grid-for-nav"> <nav data-toggle="wy-nav-shift" class="wy-nav-side"> <div class="wy-side-scroll"> <div class="wy-side-nav-search"> <a href="#" class="icon icon-home"> QEMU <img src="_static/qemu_128x128.png" class="logo" alt="Logo"/> </a> <div class="version"> 6.2.0 </div> <div role="search"> <form id="rtd-search-form" class="wy-form" action="search.html" method="get"> <input type="text" name="q" placeholder="Search docs" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation"> <p class="caption"><span class="caption-text">Contents:</span></p> <ul> <li class="toctree-l1"><a class="reference internal" href="about/index.html">About QEMU</a></li> <li class="toctree-l1"><a class="reference internal" href="system/index.html">System Emulation</a></li> <li class="toctree-l1"><a class="reference internal" href="user/index.html">User Mode Emulation</a></li> <li class="toctree-l1"><a class="reference internal" href="tools/index.html">Tools</a></li> <li class="toctree-l1"><a class="reference internal" href="interop/index.html">System Emulation Management and Interoperability</a></li> <li class="toctree-l1"><a class="reference internal" href="specs/index.html">System Emulation Guest Hardware Specifications</a></li> <li class="toctree-l1"><a class="reference internal" href="devel/index.html">Developer Information</a></li> </ul> </div> </div> </nav> <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> <nav class="wy-nav-top" aria-label="top navigation"> <i data-toggle="wy-nav-top" class="fa fa-bars"></i> <a href="#">QEMU</a> </nav> <div class="wy-nav-content"> <div class="rst-content"> <div role="navigation" aria-label="breadcrumbs navigation"> <ul class="wy-breadcrumbs"> <li><a href="#">Docs</a> »</li> <li>Welcome to QEMU’s documentation!</li> <li class="wy-breadcrumbs-aside"> <a href="https://gitlab.com/qemu-project/qemu/blob/master/docs/index.rst" class="fa fa-gitlab"> Edit on GitLab</a> </li> </ul> <hr/> </div> <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> <div itemprop="articleBody"> <div class="section" id="welcome-to-qemu-s-documentation"> <h1>Welcome to QEMU’s documentation!<a class="headerlink" href="#welcome-to-qemu-s-documentation" title="Permalink to this headline">¶</a></h1> <div class="toctree-wrapper compound"> <p class="caption"><span class="caption-text">Contents:</span></p> <ul> <li class="toctree-l1"><a class="reference internal" href="about/index.html">About QEMU</a><ul> <li class="toctree-l2"><a class="reference internal" href="about/build-platforms.html">Supported build platforms</a></li> <li class="toctree-l2"><a class="reference internal" href="about/deprecated.html">Deprecated features</a></li> <li class="toctree-l2"><a class="reference internal" href="about/removed-features.html">Removed features</a></li> <li class="toctree-l2"><a class="reference internal" href="about/license.html">License</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="system/index.html">System Emulation</a><ul> <li class="toctree-l2"><a class="reference internal" href="system/quickstart.html">Quick Start</a></li> <li class="toctree-l2"><a class="reference internal" href="system/invocation.html">Invocation</a></li> <li class="toctree-l2"><a class="reference internal" href="system/device-emulation.html">Device Emulation</a></li> <li class="toctree-l2"><a class="reference internal" href="system/keys.html">Keys in the graphical frontends</a></li> <li class="toctree-l2"><a class="reference internal" href="system/mux-chardev.html">Keys in the character backend multiplexer</a></li> <li class="toctree-l2"><a class="reference internal" href="system/monitor.html">QEMU Monitor</a></li> <li class="toctree-l2"><a class="reference internal" href="system/images.html">Disk Images</a></li> <li class="toctree-l2"><a class="reference internal" href="system/virtio-net-failover.html">QEMU virtio-net standby 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usage</a></li> <li class="toctree-l2"><a class="reference internal" href="system/managed-startup.html">Managed start up options</a></li> <li class="toctree-l2"><a class="reference internal" href="system/bootindex.html">Managing device boot order with bootindex properties</a></li> <li class="toctree-l2"><a class="reference internal" href="system/cpu-hotplug.html">Virtual CPU hotplug</a></li> <li class="toctree-l2"><a class="reference internal" href="system/pr-manager.html">Persistent reservation managers</a></li> <li class="toctree-l2"><a class="reference internal" href="system/targets.html">QEMU System Emulator Targets</a></li> <li class="toctree-l2"><a class="reference internal" href="system/security.html">Security</a></li> <li class="toctree-l2"><a class="reference internal" href="system/multi-process.html">Multi-process QEMU</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="user/index.html">User Mode Emulation</a><ul> <li class="toctree-l2"><a class="reference internal" href="user/main.html">QEMU User space emulator</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="tools/index.html">Tools</a><ul> <li class="toctree-l2"><a class="reference internal" href="tools/qemu-img.html">QEMU disk image utility</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/qemu-storage-daemon.html">QEMU Storage Daemon</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/qemu-nbd.html">QEMU Disk Network Block Device Server</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/qemu-pr-helper.html">QEMU persistent reservation helper</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/qemu-trace-stap.html">QEMU SystemTap trace tool</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/virtfs-proxy-helper.html">QEMU 9p virtfs proxy filesystem helper</a></li> <li class="toctree-l2"><a class="reference internal" href="tools/virtiofsd.html">QEMU virtio-fs shared file system daemon</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="interop/index.html">System Emulation Management and Interoperability</a><ul> <li class="toctree-l2"><a class="reference internal" href="interop/barrier.html">Barrier client protocol</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/bitmaps.html">Dirty Bitmaps and Incremental Backup</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/dbus.html">D-Bus</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/dbus-vmstate.html">D-Bus VMState</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/live-block-operations.html">Live Block Device Operations</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/pr-helper.html">Persistent reservation helper protocol</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/qemu-ga.html">QEMU Guest Agent</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/qemu-ga-ref.html">QEMU Guest Agent Protocol Reference</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/qemu-qmp-ref.html">QEMU QMP Reference Manual</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/qemu-storage-daemon-qmp-ref.html">QEMU Storage Daemon QMP Reference Manual</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/vhost-user.html">Vhost-user Protocol</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/vhost-user-gpu.html">Vhost-user-gpu Protocol</a></li> <li class="toctree-l2"><a class="reference internal" href="interop/vhost-vdpa.html">Vhost-vdpa Protocol</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="specs/index.html">System Emulation Guest Hardware Specifications</a><ul> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-xive.html">POWER9 XIVE interrupt controller</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-spapr-xive.html">XIVE for sPAPR (pseries machines)</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-spapr-numa.html">NUMA mechanics for sPAPR (pseries machines)</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-spapr-numa.html#how-the-pseries-linux-guest-calculates-numa-distances">How the pseries Linux guest calculates NUMA distances</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-spapr-numa.html#pseries-numa-mechanics">pseries NUMA mechanics</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/ppc-spapr-numa.html#legacy-5-1-and-older-pseries-numa-mechanics">Legacy (5.1 and older) pseries NUMA mechanics</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_hw_reduced_hotplug.html">QEMU and ACPI BIOS Generic Event Device interface</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/tpm.html">QEMU TPM Device</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_hest_ghes.html">APEI tables generating and CPER record</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_cpu_hotplug.html">QEMU<->ACPI BIOS CPU hotplug interface</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_mem_hotplug.html">QEMU<->ACPI BIOS memory hotplug interface</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_pci_hotplug.html">QEMU<->ACPI BIOS PCI hotplug interface</a></li> <li class="toctree-l2"><a class="reference internal" href="specs/acpi_nvdimm.html">QEMU<->ACPI BIOS NVDIMM interface</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="devel/index.html">Developer Information</a><ul> <li class="toctree-l2"><a class="reference internal" href="devel/code-of-conduct.html">Code of Conduct</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/conflict-resolution.html">Conflict Resolution Policy</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/build-system.html">The QEMU build system architecture</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/style.html">QEMU Coding Style</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/kconfig.html">QEMU and Kconfig</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/testing.html">Testing in QEMU</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/fuzzing.html">Fuzzing</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/control-flow-integrity.html">Control-Flow Integrity (CFI)</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/loads-stores.html">Load and Store APIs</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/memory.html">The memory API</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/migration.html">Migration</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/atomics.html">Atomic operations in QEMU</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/stable-process.html">QEMU and the stable process</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/ci.html">CI</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/qtest.html">QTest Device Emulation Testing Framework</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/decodetree.html">Decodetree Specification</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/secure-coding-practices.html">Secure Coding Practices</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/tcg.html">Translator Internals</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/tcg-icount.html">TCG Instruction Counting</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/tracing.html">Tracing</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/multi-thread-tcg.html">Multi-threaded TCG</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/tcg-plugins.html">QEMU TCG Plugins</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/bitops.html">Bitwise operations</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/ui.html">QEMU UI subsystem</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/reset.html">Reset in QEMU: the Resettable interface</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/s390-dasd-ipl.html">Booting from real channel-attached devices on s390x</a></li> <li class="toctree-l2"><a class="reference internal" href="devel/clocks.html">Modelling a clock tree in QEMU</a></li> <li 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