Difference between pages "KVM" and "User:Kamil.belter"

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m (tt 2 code, /etc/kvm to /dev/kvm, add gpasswd, fancy to not so much, a bunch of nit picking)
 
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== Introduction ==
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|Geoloc=51.1078852, 17.03853760000004
 
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|Location name=Wroclaw
KVM is a hardware-accelerated full-machine hypervisor and virtualization solution included as part of kernel 2.6.20 and later. It allows you to create and start hardware-accelerated virtual machines under Linux using the QEMU tools.
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|Blogs=
 
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== Kernel Setup ==
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To enable KVM, the following kernel config parameters should be enabled (this is based on a 3.x kernel):
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Under <code>Processor type and features</code>, enable <code>Linux guest support</code>, and enable the following options:
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{{kernelop|title=Processor type and features,Linux guest support|desc=
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--- Linux guest support
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[*]  Enable paravirtualization code
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[ ]    paravirt-ops debugging (NEW)
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[*]    Paravirtualization layer for spinlocks
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[ ]    Xen guest support (NEW)
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[*]  KVM Guest support (including kvmclock) (NEW)
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[ ]    Enable debug information for KVM Guests in debugfs (NEW)
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[ ]  Paravirtual steal time accounting (NEW)
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}}
 
}}
 
 
Under the <code>Virtualization</code> category from the main kernel config menu, enable <code>Kernel-based Virtual Machine (KVM) support</code>, and enable at least one type of KVM, either for Intel or AMD processors. It is also recommended to enable <code>Host kernel acceleration for virtio net</code>.
 
 
{{kernelop|title=Virtualization|desc=
 
--- Virtualization
 
<M>  Kernel-based Virtual Machine (KVM) support
 
<M>    KVM for Intel processors support
 
<M>    KVM for AMD processors support
 
[*]    KVM legacy PCI device assignment support
 
<M>  Host kernel accelerator for virtio net
 
}}
 
 
 
You can use modules or build these parts directly into the kernel. Build your new kernel and modules, and reboot.
 
 
== User-space tools ==
 
 
If you are using QEMU on your desktop, add the following USE flag to <code>/etc/portage/make.conf</code>:
 
 
<pre>
 
USE="$USE usbredir"
 
</pre>
 
This will enable good mouse support for QEMU on your desktop.
 
 
Now, emerge qemu:
 
 
<console>
 
# ##i## emerge qemu
 
</console>
 
 
==Initial Setup==
 
 
Prior to using KVM, modprobe the appropriate accelerated driver for Intel or AMD:
 
 
<console>
 
# ##i##modprobe kvm_intel
 
</console>
 
 
== Next Steps ==
 
 
{{important|Before using KVM, be sure that your user account is in the <code>kvm</code> group. You will need to use a command such as <code>vigr</code> or <code>gpasswd -a $USER kvm</code> as root to do this, and then log out and log back in for this to take effect.}}
 
 
{{important|Atm the group <code>kvm</code> has no access to /dev/kvm. Change this with
 
chown root:kvm /dev/kvm
 
chmod g+rw /dev/kvm
 
and kvm will start like expected [https://bugs.funtoo.org/browse/FL-1626 (see bug FL-1626)] }}
 
 
For information on how to use KVM with various operating systems, see:
 
 
* [[Windows 7 Virtualization with KVM]]
 
* [[Linux on KVM]]
 
 
[[Category:Virtualization]]
 
[[Category:KVM]]
 

Latest revision as of 09:41, October 19, 2014

Kamil Belter

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Wroclaw (51° 6' 28.3867", 17° 2' 18.7354")