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Add note explaining what is KVM
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qm.adoc
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qm.adoc
@ -45,7 +45,14 @@ only concerned with 32 and 64 bits PC clone emulation, since it represents the
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overwhelming majority of server hardware. The emulation of PC clones is also one
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overwhelming majority of server hardware. The emulation of PC clones is also one
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of the fastest due to the availability of processor extensions which greatly
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of the fastest due to the availability of processor extensions which greatly
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speed up Qemu when the emulated architecture is the same as the host
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speed up Qemu when the emulated architecture is the same as the host
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architecture. +
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architecture.
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NOTE: You may sometimes encounter the term _KVM_ (Kernel-based Virtual Machine).
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It means that Qemu is running with the support of the virtualization processor
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extensions, via the Linux kvm module. In the context of {pve} _Qemu_ and
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_KVM_ can be use interchangeably as Qemu in {pve} will always try to load the kvm
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module.
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Qemu inside {pve} runs as a root process, since this is required to access block
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Qemu inside {pve} runs as a root process, since this is required to access block
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and PCI devices.
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and PCI devices.
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