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<title>Kernel-based Virtual Machine</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Kernel-based Virtual Machine</span></span>

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</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="KVM_switch" title="KVM switch">KVM switch</a>.</div>

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</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above summary">KVM</th></tr><tr><td colspan="2" class="infobox-image logo"><span typeof="mw:File"></span></td></tr><tr><td colspan="2" class="infobox-image logo"><span typeof="mw:File"></span><div class="infobox-caption">Screenshot of QEMU/KVM running <a href="NetBSD" title="NetBSD">NetBSD</a> and <a href="OpenIndiana" title="OpenIndiana">OpenIndiana</a> guests on an <a href="Arch_Linux" title="Arch Linux">Arch Linux</a> host.</div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Programmer" title="Programmer">Original author(s)</a></th><td class="infobox-data"><a href="Qumranet" title="Qumranet">Qumranet</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">The <a href="Linux_Kernel" class="mw-redirect" title="Linux Kernel">Linux Kernel</a> community</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">

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</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://git.kernel.org/pub/scm/virt/kvm/kvm.git">git<wbr>.kernel<wbr>.org<wbr>/pub<wbr>/scm<wbr>/virt<wbr>/kvm<wbr>/kvm<wbr>.git</a></span> </li></ul>

</div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="C_(programming_language)" title="C (programming language)">C</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="Unix-like" title="Unix-like">Unix-like</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><a href="ARM_architecture" class="mw-redirect" title="ARM architecture">ARM</a>, <a href="PowerPC" title="PowerPC">PowerPC</a>, <a href="IBM_ESA/390" class="mw-redirect" title="IBM ESA/390">ESA/390</a>, <a href="IA-32" title="IA-32">IA-32</a>, <a href="X86-64" title="X86-64">x86-64</a>, <a href="RISC-V" title="RISC-V">RISC-V</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="Hypervisor" title="Hypervisor">Hypervisor</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="GNU_General_Public_License" title="GNU General Public License">GNU GPL</a> or <a href="GNU_Lesser_General_Public_License" title="GNU Lesser General Public License">LGPL</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="http://www.linux-kvm.org">www<wbr>.linux-kvm<wbr>.org</a></span></td></tr></tbody></table>

<p><b>Kernel-based Virtual Machine</b> (<b>KVM</b>) is a <a href="Free_and_open-source" class="mw-redirect" title="Free and open-source">free and open-source</a> <a href="Virtualization" title="Virtualization">virtualization</a> module in the <a href="Linux_kernel" title="Linux kernel">Linux kernel</a> that allows the <a href="Kernel_(operating_system)" title="Kernel (operating system)">kernel</a> to function as a <a href="Hypervisor" title="Hypervisor">hypervisor</a>. It was merged into the <a href="Mainline_Linux" class="mw-redirect" title="Mainline Linux">mainline Linux kernel</a> in version 2.6.20, which was released on February 5, 2007.<sup id="cite_ref-2620notes_1-0" class="reference"><a href="#cite_note-2620notes-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> KVM requires a processor with <a href="Hardware_virtualization" title="Hardware virtualization">hardware virtualization</a> extensions, such as <a href="Intel_VT" class="mw-redirect" title="Intel VT">Intel VT</a> or <a href="AMD-V" class="mw-redirect" title="AMD-V">AMD-V</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> KVM has also been ported to other operating systems such as <a href="FreeBSD" title="FreeBSD">FreeBSD</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and <a href="Illumos" title="Illumos">illumos</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> in the form of loadable kernel modules.

</p><p>KVM was originally designed for <a href="X86" title="X86">x86</a> processors but has since been <a href="Porting" title="Porting">ported</a> to <a href="IBM_ESA/390" class="mw-redirect" title="IBM ESA/390">ESA/390</a>,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="PowerPC" title="PowerPC">PowerPC</a>,<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="IA-64" title="IA-64">IA-64</a>, and <a href="ARM_architecture" class="mw-redirect" title="ARM architecture">ARM</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

The IA-64 port was removed in 2014.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>

</p><p>KVM supports <a href="Hardware-assisted_virtualization" class="mw-redirect" title="Hardware-assisted virtualization">hardware-assisted virtualization</a> for a wide variety of guest operating systems including <a href="BSD" class="mw-redirect" title="BSD">BSD</a>, <a href="Solaris_(operating_system)" class="mw-redirect" title="Solaris (operating system)">Solaris</a>, <a href="Microsoft_Windows" title="Microsoft Windows">Windows</a>, <a href="Haiku_(operating_system)" title="Haiku (operating system)">Haiku</a>, <a href="ReactOS" title="ReactOS">ReactOS</a>, <a href="Plan_9_from_Bell_Labs" title="Plan 9 from Bell Labs">Plan 9</a>, <a href="AROS_Research_Operating_System" title="AROS Research Operating System">AROS</a>, <a href="MacOS" title="MacOS">macOS</a>, and even other Linux systems.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> In addition, Android 2.2, <a href="GNU/Hurd" class="mw-redirect" title="GNU/Hurd">GNU/Hurd</a><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> (<a href="Debian" title="Debian">Debian</a> K16), <a href="MINIX_3" class="mw-redirect" title="MINIX 3">Minix</a> 3.1.2a, Solaris 10 U3 and <a href="Darwin_(operating_system)" title="Darwin (operating system)">Darwin</a> 8.0.1, together with other operating systems and some newer versions of these listed, are known to work with certain limitations.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>

</p><p>Additionally, KVM provides <a href="Paravirtualization" class="mw-redirect" title="Paravirtualization">paravirtualization</a> support for Linux, <a href="OpenBSD" title="OpenBSD">OpenBSD</a>,<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> FreeBSD,<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> <a href="NetBSD" title="NetBSD">NetBSD</a>,<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Plan 9<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> and Windows guests using the VirtIO <a href="API" title="API">API</a>.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> This includes a paravirtual <a href="Ethernet_card" class="mw-redirect" title="Ethernet card">Ethernet card</a>, disk I/O controller,<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> <a href="Balloon_driver" class="mw-redirect" title="Balloon driver">balloon driver</a>, and a <a href="VGA" class="mw-redirect" title="VGA">VGA</a> graphics interface using <a href="SPICE_(protocol)" class="mw-redirect" title="SPICE (protocol)">SPICE</a> or <a href="VMware" title="VMware">VMware</a> drivers.

</p>

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>

<p><a href="Avi_Kivity" title="Avi Kivity">Avi Kivity</a> began the development of KVM in mid-2006 at <a href="Qumranet" title="Qumranet">Qumranet</a>, a technology <a href="Startup_company" title="Startup company">startup company</a><sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> that was acquired by <a href="Red_Hat" title="Red Hat">Red Hat</a> in 2008.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup>

</p><p>KVM surfaced in October 2006<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> and was merged into the Linux kernel mainline in version 2.6.20, released on 5 February 2007.<sup id="cite_ref-2620notes_1-1" class="reference"><a href="#cite_note-2620notes-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

</p><p>KVM is maintained by Paolo Bonzini.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Internals">Internals</h2></div>

<p>KVM provides device abstraction but no processor emulation. It exposes the <style data-mw-deduplicate="TemplateStyles:r886049734">

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</style><span class="monospaced">/dev/kvm</span> interface, which a user mode host can then use to:

</p>

<ul><li>Set up the guest VM's address space. The host must also supply a firmware image (usually a custom BIOS when emulating PCs) that the guest can use to bootstrap into its main OS.</li>

<li>Feed the guest simulated I/O.</li>

<li>Map the guest's video display back onto the system host.</li></ul>

<p>Originally, a forked version of <a href="QEMU" title="QEMU">QEMU</a> was provided to launch guests and deal with hardware emulation that is not handled by the kernel. That support was eventually merged into the upstream project. There are now numerous Virtual Machine Monitors (VMMs) which can utilise the KVM interface including kvmtool, crosvm and <a href="Firecracker_(software)" title="Firecracker (software)">Firecracker</a> and numerous specialised VMMs built with frameworks such as rust-vmm.

</p><p>Internally, KVM uses <a href="SeaBIOS" title="SeaBIOS">SeaBIOS</a> as an open source implementation of a 16-bit x86 <a href="BIOS" title="BIOS">BIOS</a>.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Features">Features</h2></div>

<p>KVM has had support for <a href="Hot_swapping" title="Hot swapping">hot swappable vCPUs</a>,<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> dynamic memory management,<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> and <a href="Live_Migration" class="mw-redirect" title="Live Migration">Live Migration</a> since February 2007.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> It also reduces the impact that memory write-intensive workloads have on the migration process.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Emulated_hardware">Emulated hardware</h2></div>

<p>KVM itself emulates very little hardware, instead deferring to a higher level client application such as <a href="QEMU" title="QEMU">QEMU</a>, crosvm, or <a href="Firecracker_(software)" title="Firecracker (software)">Firecracker</a> for device emulation.

</p><p>KVM provides the following emulated devices:

</p>

<ul><li>Virtual <a href="CPU" class="mw-redirect" title="CPU">CPU</a> and memory<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup></li>

<li>VirtIO</li></ul>

<div class="mw-heading mw-heading2"><h2 id="Graphical_management_tools">Graphical management tools</h2></div>

<ul><li><a href="Kimchi_(software)" title="Kimchi (software)">Kimchi</a> – web-based virtualization management tool for KVM</li>

<li><a href="Virtual_Machine_Manager" class="mw-redirect" title="Virtual Machine Manager">Virtual Machine Manager</a> – supports creating, editing, starting, and stopping KVM-based virtual machines, as well as live or cold drag-and-drop migration of VMs between hosts.</li>

<li><a href="Proxmox_Virtual_Environment" title="Proxmox Virtual Environment">Proxmox Virtual Environment</a> – an open-source virtualization management package including KVM and <a href="LXC" title="LXC">LXC</a>. It has a bare-metal installer, a web-based remote management GUI, a HA cluster stack, unified storage, flexible network, and optional commercial support.</li>

<li><a href="OpenQRM" title="OpenQRM">OpenQRM</a> – management platform for managing heterogeneous data center infrastructures</li>

<li><a href="GNOME_Boxes" title="GNOME Boxes">GNOME Boxes</a> – Gnome interface for managing libvirt guests on Linux</li>

<li><a href="OVirt" title="OVirt">oVirt</a> – open-source virtualization management tool for KVM built on top of <a href="Libvirt" title="Libvirt">libvirt</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="Licensing">Licensing</h2></div>

<p>The kernel-mode component of KVM is a part of the <a href="Linux_kernel" title="Linux kernel">Linux kernel</a>, itself licensed under <a href="GNU_General_Public_License#Version_2" title="GNU General Public License">GNU General Public License, version 2</a>.<sup id="cite_ref-Linux_Licensing_32-0" class="reference"><a href="#cite_note-Linux_Licensing-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup>

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<ul><li><a href="CloudStack" class="mw-redirect" title="CloudStack">CloudStack</a></li>

<li><a href="Comparison_of_platform_virtualization_software" title="Comparison of platform virtualization software">Comparison of platform virtualization software</a></li>

<li><a href="Hyper-V" title="Hyper-V">Hyper-V</a></li>

<li><a href="Kernel_same-page_merging" title="Kernel same-page merging">Kernel same-page merging</a> (KSM)</li>

<li><a href="Lguest" title="Lguest">Lguest</a></li>

<li><a href="Libguestfs" title="Libguestfs">libguestfs</a></li>

<li><a href="Open_Virtualization_Alliance" title="Open Virtualization Alliance">Open Virtualization Alliance</a></li>

<li><a href="OpenNebula" title="OpenNebula">OpenNebula</a></li>

<li><a href="OpenStack" title="OpenStack">OpenStack</a></li>

<li><a href="Red_Hat_Virtualization" title="Red Hat Virtualization">Red Hat Virtualization</a></li>

</div>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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<ul><li><cite id="CITEREFAmit_Shah2016" class="citation web cs1">Amit Shah (2016-11-02). <a rel="nofollow" class="external text" href="https://lwn.net/Articles/705160/">"Ten years of KVM"</a>. <i>lwn.net</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2017-02-10</span></span>.</cite></li></ul>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="http://public.dhe.ibm.com/software/dw/linux390/perf/ZSW03346USEN.pdf">Best practices for the Kernel-based Virtual Machine</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191106035557/http://public.dhe.ibm.com/software/dw/linux390/perf/ZSW03346USEN.pdf">Archived</a> 2019-11-06 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, IBM, second edition, April 2012</li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20141021055601/http://www.linux-kvm.org/wiki/images/f/f9/2012-forum-virtio-blk-performance-improvement.pdf">Virtio-blk Performance Improvement</a>, KVM Forum 2012, November 8, 2012, by Asias He</li>

<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101128114720/http://qemu-buch.de/e/Content">Wikibook QEMU & KVM</a></li>

<li><a rel="nofollow" class="external text" href="https://chromium.googlesource.com/chromiumos/platform/crosvm/">crosvm - Chrome OS virtual machine monitor</a></li>

<li><a rel="nofollow" class="external text" href="https://firecracker-microvm.github.io/">Firecracker VMM for KVM</a></li></ul>

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</style><div id="Virtualization_software371" style="font-size:114%;margin:0 4em"><a href="Virtualization" title="Virtualization">Virtualization</a> software</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><a href="Comparison_of_platform_virtualization_software" title="Comparison of platform virtualization software">Comparison of platform virtualization software</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Hardware_virtualization" title="Hardware virtualization">Hardware</a><br>(<a href="Hypervisor" title="Hypervisor">hypervisors</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Native</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Adaptive_Domain_Environment_for_Operating_Systems" title="Adaptive Domain Environment for Operating Systems">Adeos</a></li>

<li><a href="Hyper-V" title="Hyper-V">Hyper-V</a></li>

<li>

<ul><li><a href="OVirt" title="OVirt">oVirt</a></li>

<li>KubeVirt</li></ul></li>

<li><a href="Oracle_VM_Server_for_SPARC" title="Oracle VM Server for SPARC">LDoms / Oracle VM Server for SPARC</a></li>

<li><a href="Logical_partition" title="Logical partition">Logical partition</a> (LPAR)</li>

<li><a href="LynxSecure" title="LynxSecure">LynxSecure</a></li>

<li><a href="PikeOS" title="PikeOS">PikeOS</a></li>

<li><a href="Proxmox_Virtual_Environment" title="Proxmox Virtual Environment">Proxmox VE</a></li>

<li><a href="SIMMON" title="SIMMON">SIMMON</a></li>

<li><a href="VMware_ESXi" title="VMware ESXi">VMware ESXi</a>

<ul><li><a href="VMware_vSphere" title="VMware vSphere">VMware vSphere</a></li>

<li><a href="VCloud_Air" title="VCloud Air">vCloud</a></li></ul></li>

<li><a href="VMware_Infrastructure" title="VMware Infrastructure">VMware Infrastructure</a></li>

<ul><li><a href="XenServer" class="mw-redirect" title="XenServer">XenServer</a></li>

<li><a href="XtratuM" title="XtratuM">XtratuM</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Hosted</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Specialized</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Basilisk_II" title="Basilisk II">Basilisk II</a></li>

<li><a href="Bochs" title="Bochs">Bochs</a></li>

<li><a href="Cooperative_Linux" title="Cooperative Linux">Cooperative Linux</a></li>

<li><a href="DOSBox" title="DOSBox">DOSBox</a></li>

<li><a href="DOSEMU" title="DOSEMU">DOSEMU</a></li>

<li><a href="PikeOS" title="PikeOS">PikeOS</a></li>

<li><a href="SheepShaver" title="SheepShaver">SheepShaver</a></li>

<li><a href="Windows_on_Windows" title="Windows on Windows">Windows on Windows</a>

<ul><li><a href="Virtual_DOS_machine" title="Virtual DOS machine">Virtual DOS machine</a></li></ul></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Independent</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Bhyve" title="Bhyve">bhyve</a></li>

<li><a href="Microsoft_Virtual_Server" title="Microsoft Virtual Server">Microsoft Virtual Server</a></li>

<li><a href="Parallels_Workstation" title="Parallels Workstation">Parallels Workstation</a> (<a href="Parallels_Workstation_Extreme" title="Parallels Workstation Extreme">Extreme</a>)</li>

<li><a href="Parallels_Desktop_for_Mac" title="Parallels Desktop for Mac">Parallels Desktop for Mac</a></li>

<li><a href="Parallels_Server_for_Mac" class="mw-redirect" title="Parallels Server for Mac">Parallels Server for Mac</a></li>

<li><a href="PearPC" title="PearPC">PearPC</a></li>

<li><a href="VirtualBox" title="VirtualBox">VirtualBox</a></li>

<li><a href="Virtual_Iron" title="Virtual Iron">Virtual Iron</a></li>

<li><a href="Virtual_PC" title="Virtual PC">Virtual PC</a></li>

<li><a href="VMware_Fusion" title="VMware Fusion">VMware Fusion</a></li>

<li><a href="VMware_Server" title="VMware Server">VMware Server</a></li>

<li><a href="VMware_Workstation" title="VMware Workstation">VMware Workstation</a> (<a href="VMware_Workstation_Player" title="VMware Workstation Player">Player</a>)</li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tools</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Ganeti" title="Ganeti">Ganeti</a></li>

<li><a href="System_Center_Virtual_Machine_Manager" title="System Center Virtual Machine Manager">System Center Virtual Machine Manager</a></li>

<li><a href="Virt-manager" title="Virt-manager">Virt-manager</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="OS-level_virtualization" title="OS-level virtualization">Operating<br>system</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">OS containers</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="FreeBSD_jail" title="FreeBSD jail">FreeBSD jail</a></li>

<li>iCore Virtual Accounts</li>

<li><a href="Linux-VServer" title="Linux-VServer">Linux-VServer</a></li>

<li><a href="LXC" title="LXC">Linux Containers</a></li>

<li><a href="OpenVZ" title="OpenVZ">OpenVZ</a></li>

<li><a href="Solaris_Containers" title="Solaris Containers">Solaris Containers</a></li>

<li><a href="Virtuozzo_(company)#Software" title="Virtuozzo (company)">Virtuozzo</a></li>

<li><a href="Workload_Partitions" title="Workload Partitions">Workload Partitions</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Application containers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Docker_(software)" title="Docker (software)">Docker</a></li>

<li><a href="Podman" title="Podman">Podman</a></li>

<li><a href="Lmctfy" title="Lmctfy">lmctfy</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Virtual kernel architectures</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Rump_kernel" title="Rump kernel">Rump kernel</a></li>

<li><a href="User-mode_Linux" title="User-mode Linux">User-mode Linux</a></li>

<li><a href="Vkernel" title="Vkernel">vkernel</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related kernel features</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Solaris_Containers#Branded_zones" title="Solaris Containers">BrandZ</a></li>

<li><a href="Cgroups" title="Cgroups">cgroups</a></li>

<li><a href="Chroot" title="Chroot">chroot</a></li>

<li><a href="Linux_namespaces" title="Linux namespaces">namespaces</a></li>

<li><a href="Seccomp" title="Seccomp">seccomp</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Orchestration</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Amazon_Web_Services" title="Amazon Web Services">Amazon ECS</a></li>

<li><a href="Kubernetes" title="Kubernetes">Kubernetes</a></li>

<li><a href="OpenShift" title="OpenShift">OpenShift</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Desktop_virtualization" title="Desktop virtualization">Desktop</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Citrix_Virtual_Apps" title="Citrix Virtual Apps">Citrix Virtual Apps</a></li>

<li><a href="Citrix_Virtual_Desktops" title="Citrix Virtual Desktops">Citrix Virtual Desktops</a></li>

<li><a href="Remote_Desktop_Services" title="Remote Desktop Services">Remote Desktop Services</a></li>

<li><a href="VMware_Horizon" class="mw-redirect" title="VMware Horizon">VMware Horizon</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Application_virtualization" title="Application virtualization">Application</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Ceedo" title="Ceedo">Ceedo</a></li>

<li><a href="Citrix_Virtual_Apps" title="Citrix Virtual Apps">Citrix Virtual Apps</a></li>

<li><a href="Dalvik_(software)" title="Dalvik (software)">Dalvik</a></li>

<li><a href="InstallFree" title="InstallFree">InstallFree</a></li>

<li><a href="Microsoft_App-V" title="Microsoft App-V">Microsoft App-V</a></li>

<li><a href="Remote_Desktop_Services" title="Remote Desktop Services">Remote Desktop Services</a></li>

<li><a href="Symantec_Workspace_Virtualization" title="Symantec Workspace Virtualization">Symantec Workspace Virtualization</a></li>

<li><a href="Turbo_(software)" title="Turbo (software)">Turbo</a></li>

<li><a href="VMware_ThinApp" title="VMware ThinApp">VMware ThinApp</a></li>

<li><a href="ZeroVM" title="ZeroVM">ZeroVM</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Network_virtualization" title="Network virtualization">Network</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Distributed_Overlay_Virtual_Ethernet" title="Distributed Overlay Virtual Ethernet">Distributed Overlay Virtual Ethernet</a> (DOVE)</li>

<li><a href="Ethernet_VPN" title="Ethernet VPN">Ethernet VPN</a> (EVPN)</li>

<li><a href="Network_Virtualization_using_Generic_Routing_Encapsulation" title="Network Virtualization using Generic Routing Encapsulation">NVGRE</a></li>

<li><a href="Open_vSwitch" title="Open vSwitch">Open vSwitch</a></li>

<li><a href="Virtual_security_switch" title="Virtual security switch">Virtual security switch</a></li>

<li><a href="Virtual_Extensible_LAN" title="Virtual Extensible LAN">Virtual Extensible LAN</a> (VXLAN)</li>

<li><a href="Generic_Network_Virtualization_Encapsulation" title="Generic Network Virtualization Encapsulation">Generic Network Virtualization Encapsulation</a> (GENEVE)</li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="BlueStacks" title="BlueStacks">BlueStacks</a></li></ul>

</div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>See also: <a href="List_of_emulators" title="List of emulators">List of emulators</a>, <a href="List_of_computer_system_emulators" title="List of computer system emulators">List of computer system emulators</a></div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox" aria-labelledby="Linux_kernel514" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Linux_kernel514" style="font-size:114%;margin:0 4em"><a href="Linux_kernel" title="Linux kernel">Linux kernel</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organization</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Kernel19" scope="row" class="navbox-group" style="width:1%">Kernel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_Foundation" title="Linux Foundation">Linux Foundation</a></li>

<li><a href="Linux_Mark_Institute" title="Linux Mark Institute">Linux Mark Institute</a></li>

<li><a href="Linus's_law" title="Linus's law">Linus's law</a></li>

<li><a href="Tanenbaum%E2%80%93Torvalds_debate" title="Tanenbaum–Torvalds debate">Tanenbaum–Torvalds debate</a></li>

<li><a href="SCO%E2%80%93Linux_disputes" title="SCO–Linux disputes">SCO disputes</a></li>

<li><a href="Linaro" title="Linaro">Linaro</a></li>

<li><a href="Menuconfig" title="Menuconfig">menuconfig</a></li>

<li><a href="List_of_Linux-supported_computer_architectures" title="List of Linux-supported computer architectures">Supported computer architectures</a></li>

<li><a href="Linux_kernel_version_history" title="Linux kernel version history">Version history</a></li>

<li><a href="Criticism_of_Linux" title="Criticism of Linux">Criticism</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Support</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li>Developers

<ul><li><i><a href="The_Linux_Programming_Interface" title="The Linux Programming Interface">The Linux Programming Interface</a></i></li>

<li><a href="Kernel.org" title="Kernel.org">kernel.org</a></li>

<li><a href="Linux_conference" class="mw-redirect" title="Linux conference">Linux conferences</a></li></ul></li>

<li>Users

<ul><li><a href="Linux_user_group" title="Linux user group">Linux User Group (LUG)</a></li></ul></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Werner_Almesberger" title="Werner Almesberger">Werner Almesberger</a></li>

<li><a href="H._Peter_Anvin" title="H. Peter Anvin">H. Peter Anvin</a></li>

<li><a href="Jens_Axboe" title="Jens Axboe">Jens Axboe</a></li>

<li><a href="Moshe_Bar_(investor)" title="Moshe Bar (investor)">Moshe Bar</a></li>

<li><a href="Suparna_Bhattacharya" title="Suparna Bhattacharya">Suparna Bhattacharya</a></li>

<li><a href="Andries_Brouwer" title="Andries Brouwer">Andries Brouwer</a></li>

<li><a href="Matthew_Garrett" title="Matthew Garrett">Matthew Garrett</a></li>

<li><a href="Avi_Kivity" title="Avi Kivity">Avi Kivity</a></li>

<li><a href="Con_Kolivas" title="Con Kolivas">Con Kolivas</a></li>

<li><a href="Greg_Kroah-Hartman" title="Greg Kroah-Hartman">Greg Kroah-Hartman</a></li>

<li><a href="Benson_Leung" title="Benson Leung">Benson Leung</a></li>

<li><a href="Robert_Love" title="Robert Love">Robert Love</a></li>

<li><a href="David_S._Miller" title="David S. Miller">David S. Miller</a></li>

<li><a href="Ingo_Moln%C3%A1r" title="Ingo Molnár">Ingo Molnár</a></li>

<li><a href="Andrew_Morton_(computer_programmer)" title="Andrew Morton (computer programmer)">Andrew Morton</a></li>

<li><a href="Hans_Reiser" title="Hans Reiser">Hans Reiser</a></li>

<li><a href="Rusty_Russell" title="Rusty Russell">Rusty Russell</a></li>

<li><a href="Shuah_Khan" title="Shuah Khan">Shuah Khan</a></li>

<li><a href="Linus_Torvalds" title="Linus Torvalds">Linus Torvalds</a></li>

<li><a href="Theodore_Ts'o" title="Theodore Ts'o">Theodore Ts'o</a></li>

<li><a href="Stephen_Tweedie" title="Stephen Tweedie">Stephen Tweedie</a></li>

<li><a href="Harald_Welte" title="Harald Welte">Harald Welte</a></li>

<li><a href="Chris_Wright_(programmer)" title="Chris Wright (programmer)">Chris Wright</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technical</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Debugging</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Ftrace" title="Ftrace">ftrace</a></li>

<li><a href="Kdump_(Linux)" title="Kdump (Linux)">kdump</a></li>

<li><a href="Linux_kernel_oops" title="Linux kernel oops">Linux kernel oops</a></li>

<li><a href="SystemTap" title="SystemTap">SystemTap</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Booting_process_of_Linux" title="Booting process of Linux">Startup</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Vmlinux" title="Vmlinux">vmlinux</a></li>

<li><a href="System.map" title="System.map">System.map</a></li>

<li><a href="Dracut_(software)" title="Dracut (software)">dracut</a></li>

<li><a href="Initrd" class="mw-redirect" title="Initrd">initrd</a></li>

<li><a href="Initramfs" class="mw-redirect" title="Initramfs">initramfs</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces" title="Linux kernel interfaces">ABIs</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_Standard_Base" title="Linux Standard Base">Linux Standard Base</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces" title="Linux kernel interfaces">APIs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Kernel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces#SCI" title="Linux kernel interfaces">System Call<br>Interface</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="POSIX" title="POSIX">POSIX</a>

<ul><li><a href="Ioctl" title="Ioctl">ioctl</a></li>

<li><a href="Select_(Unix)" title="Select (Unix)">select</a></li>

<li><a href="Close_(system_call)" title="Close (system call)">close</a></li>

<li><a href="Linux_kernel_interfaces#Additions_to_POSIX" title="Linux kernel interfaces">Linux-only</a>

<ul><li><a href="Futex" title="Futex">futex</a></li>

<li><a href="Epoll" title="Epoll">epoll</a></li>

<li><a href="Splice_(system_call)" title="Splice (system call)">splice</a></li>

<li><a href="Dnotify" title="Dnotify">dnotify</a></li>

<li><a href="Inotify" title="Inotify">inotify</a></li>

<li><a href="Readahead" title="Readahead">readahead</a></li>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_kernel_interfaces#In–kernel_APIs" title="Linux kernel interfaces">In-kernel</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Crypto_API_(Linux)" title="Crypto API (Linux)">Crypto API</a></li>

<li><a href="Io_uring" title="Io uring">io uring</a></li>

<li><a href="Kernfs_(Linux)" title="Kernfs (Linux)">kernfs</a></li>

<li><a href="Memory_barrier" title="Memory barrier">Memory barrier</a></li>

<li><a href="Video4Linux" title="Video4Linux">Video4Linux</a></li>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="User_space_and_kernel_space" title="User space and kernel space">Userspace</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Daemon_(computing)" title="Daemon (computing)">Daemons</a>,<br><a href="Virtual_file_system" title="Virtual file system">File systems</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li>bpffs</li>

<li><a href="Configfs" title="Configfs">configfs</a></li>

<li><a href="Devfs" class="mw-redirect" title="Devfs">devfs</a></li>

<li><a href="Devpts" title="Devpts">devpts</a></li>

<li><a href="Debugfs" title="Debugfs">debugfs</a></li>

<li>hugetlbfs</li>

<li>pipefs</li>

<li><a href="Procfs" title="Procfs">procfs</a></li>

<li>securityfs</li>

<li>sockfs</li>

<li><a href="Sysfs" title="Sysfs">sysfs</a></li>

<li><a href="Tmpfs" title="Tmpfs">tmpfs</a></li>

<li><a href="Systemd" title="Systemd">systemd</a>

<li><a href="Kmscon" title="Kmscon">Kmscon</a></li>

<li><a href="Binfmt_misc" title="Binfmt misc">binfmt_misc</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Wrapper_library" title="Wrapper library">Wrapper<br>libraries</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="C_standard_library" title="C standard library">C standard library</a>

<ul><li><a href="Glibc" title="Glibc">glibc</a></li>

<li><a href="UClibc" title="UClibc">uClibc</a></li>

<li><a href="Bionic_(software)" title="Bionic (software)">Bionic</a>

<ul><li><a href="Libhybris" title="Libhybris">libhybris</a></li></ul></li>

<li><a href="Dietlibc" title="Dietlibc">dietlibc</a></li>

<li><a href="Embedded_GLIBC" class="mw-redirect" title="Embedded GLIBC">EGLIBC</a></li>

<li><a href="Klibc" title="Klibc">klibc</a></li>

<li><a href="Newlib" title="Newlib">Newlib</a></li></ul></li>

<li><a href="Cgroups" title="Cgroups">libcgroup</a></li>

<li><a href="Direct_Rendering_Manager" title="Direct Rendering Manager">libdrm</a></li>

<li><a href="Advanced_Linux_Sound_Architecture" title="Advanced Linux Sound Architecture">libalsa</a></li>

<li><a href="Evdev" title="Evdev">libevdev</a></li>

<li><a href="Libusb" title="Libusb">libusb</a></li>

<li><a href="Io_uring" title="Io uring">liburing</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Components</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Loadable_kernel_module" title="Loadable kernel module">Kernel modules</a></li>

<li><a href="BlueZ" class="mw-redirect" title="BlueZ">BlueZ</a></li>

<li><a href="Cgroups" title="Cgroups">cgroups</a></li>

<li><a href="Linux_console" title="Linux console">Console</a></li>

<li><a href="Bcache" title="Bcache">bcache</a></li>

<li><a href="Device_mapper" title="Device mapper">Device mapper</a></li>

<li><a href="Dm-cache" title="Dm-cache">dm-cache</a></li>

<li><a href="Dm-crypt" title="Dm-crypt">dm-crypt</a></li>

<li><a href="Evdev" title="Evdev">evdev</a></li>

<li><a href="Kernel_same-page_merging" title="Kernel same-page merging">Kernel same-page merging</a> (KSM)</li>

<li><a href="Linux_framebuffer" title="Linux framebuffer">Framebuffer</a></li>

<li><a href="KMS_driver" class="mw-redirect" title="KMS driver">KMS driver</a></li>

<li><a href="Netfilter" title="Netfilter">Netfilter</a></li>

<li><a href="Netlink" title="Netlink">Netlink</a></li>

<li><a href="Nftables" title="Nftables">nftables</a></li>

<li><a href="Network_scheduler" title="Network scheduler">Network scheduler</a></li>

<li><a href="Zswap" title="Zswap">zswap</a></li></ul>

<ul><li><a href="Scheduling_(computing)#Linux" title="Scheduling (computing)">Process and I/O schedulers</a>:</li>

<li><a href="Brain_Fuck_Scheduler" title="Brain Fuck Scheduler">Brain Fuck Scheduler</a></li>

<li><a href="Completely_Fair_Scheduler" title="Completely Fair Scheduler">Completely Fair Scheduler</a> (CFS)</li>

<li><a href="Earliest_eligible_virtual_deadline_first_scheduling" title="Earliest eligible virtual deadline first scheduling">Earliest eligible virtual deadline first</a> (EEVDF)</li>

<li><a href="Noop_scheduler" title="Noop scheduler">Noop scheduler</a></li>

<li><a href="O(n)_scheduler" title="O(n) scheduler">O(n) scheduler</a></li>

<li><a href="O(1)_scheduler" title="O(1) scheduler">O(1) scheduler</a></li>

<li><a href="SCHED_DEADLINE" title="SCHED DEADLINE">SCHED_DEADLINE</a></li>

<li><a href="SCHED_FIFO" class="mw-redirect" title="SCHED FIFO">SCHED_FIFO</a></li>

<li><a href="SCHED_RR" class="mw-redirect" title="SCHED RR">SCHED_RR</a></li></ul>

<ul><li><a href="Linux_Security_Modules" title="Linux Security Modules">Security Modules</a>: <a href="AppArmor" title="AppArmor">AppArmor</a></li>

<li><a href="Exec_Shield" title="Exec Shield">Exec Shield</a></li>

<li><a href="Seccomp" title="Seccomp">seccomp</a></li>

<li><a href="Security-Enhanced_Linux" title="Security-Enhanced Linux">SELinux</a></li>

<li><a href="Smack_(software)" title="Smack (software)">Smack</a></li>

<li><a href="Tomoyo_Linux" title="Tomoyo Linux">Tomoyo Linux</a></li>

<li><a href="Linux_PAM" title="Linux PAM">Linux PAM</a></li></ul>

<ul><li><a href="Device_driver" title="Device driver">Device drivers</a>

<li><a href="Free_and_open-source_graphics_device_driver" title="Free and open-source graphics device driver">graphics</a></li></ul></li>

<li><a href="Raw_device" title="Raw device">Raw device</a></li></ul>

<ul><li><a href="Initramfs" class="mw-redirect" title="Initramfs">initramfs</a></li>

<li><a href="KernelCare" title="KernelCare">KernelCare</a></li>

<li><a href="Kexec" title="Kexec">kexec</a></li>

<li><a href="KGraft" title="KGraft">kGraft</a></li>

<li><a href="Kpatch" title="Kpatch">kpatch</a></li>

<li><a href="Ksplice" title="Ksplice">Ksplice</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Variants</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Mainline_Linux" class="mw-redirect" title="Mainline Linux">Mainline</a>

<ul><li><a href="Linux_kernel" title="Linux kernel">Linux kernel</a></li>

<li><a href="Linux-libre" title="Linux-libre">Linux-libre</a></li></ul></li>

<li><a href="High-performance_computing" title="High-performance computing">High-performance computing</a>

<li><a href="Compute_Node_Linux" title="Compute Node Linux">Compute Node Linux</a></li>

<li><a href="Slurm_Workload_Manager" title="Slurm Workload Manager">SLURM</a></li></ul></li>

<li><a href="Real-time_computing" title="Real-time computing">Real-time computing</a>

<ul><li><a href="RTLinux" title="RTLinux">RTLinux</a></li>

<li><a href="Xenomai" title="Xenomai">Xenomai</a></li>

<li><a href="PREEMPT_RT" title="PREEMPT RT">PREEMPT_RT</a></li></ul></li>

<li><a href="Memory_management_unit" title="Memory management unit">MMU</a>-less

<ul><li><a href="%CE%9CClinux" title="ΜClinux">μClinux</a></li>

<li><a href="PSXLinux" title="PSXLinux">PSXLinux</a></li></ul></li></ul>

</div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Virtualization18" scope="row" class="navbox-group" style="width:1%"><a href="Virtualization" title="Virtualization">Virtualization</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Hypervisor" title="Hypervisor">Hypervisor</a>

<ul>

<li><a href="OS-level_virtualization" title="OS-level virtualization">OS-level virtualization</a>

<ul><li><a href="Linux-VServer" title="Linux-VServer">Linux-VServer</a></li>

<li><a href="Lguest" title="Lguest">Lguest</a></li>

<li><a href="OpenVZ" title="OpenVZ">OpenVZ</a></li></ul></li>

<li>Other

<ul><li><a href="L4Linux" title="L4Linux">L4Linux</a></li>

<li><a href="User-mode_Linux" title="User-mode Linux">User-mode Linux</a></li>

<li><a href="MkLinux" title="MkLinux">MkLinux</a></li>

<li><a href="Cooperative_Linux" title="Cooperative Linux">coLinux</a></li></ul></li></ul>

</div></td></tr></tbody></table><div>

</div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Linux_adoption" title="Linux adoption">Adoption</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Rangeof_use48" scope="row" class="navbox-group" style="width:1%"><a href="Linux_range_of_use" title="Linux range of use">Range<br>of use</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Linux_desktop_environments" class="mw-redirect" title="Linux desktop environments">Desktop</a></li>

<li><a href="Linux_on_embedded_systems" title="Linux on embedded systems">Embedded</a></li>

<li><a href="Video_games_and_Linux" title="Video games and Linux">Gaming</a></li>

<li>Thin client:

<li>Server:

<li><a href="Linux-powered_device" title="Linux-powered device">Devices</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Adopters</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="List_of_Linux_adopters" title="List of Linux adopters">List of Linux adopters</a></li></ul>

</div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>

<ul><li><b><span class="nowrap"><span class="noviewer" typeof="mw:File"></span> </span><a href="Portal%3ALinux" title="Portal:Linux">Linux portal</a></b></li>

<li><b><span class="nowrap"><span class="noviewer" typeof="mw:File"><span></span></span> </span><a href="Portal%3AFree_and_open-source_software" title="Portal:Free and open-source software">Free and open-source software portal</a></b></li>

<li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> <b>Category</b></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox391" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Authority control databases: National </th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/1023662787">Germany</a></span></li></ul></div></td></tr></tbody></table></div></div><div><div class="zim-footer">

This article is issued from <a class="external text" title="Last edited on 2025-07-28" href="https://en.wikipedia.org/wiki/?title=Kernel-based_Virtual_Machine&oldid=1302972155">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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