The relationship between KVM and QEMU

Source: Internet
Author: User
The relationship between QEMU and KVM:

Virtualization, which is now described, is generally referred to as virtualization technology based on CPU hardware support. KVM relies on this technology as well as Hyper-V and Xen. Without the support of CPU hardware virtualization, KVM is not working.
To be exact, KVM is a module of Linux. You can use Modprobe to load the KVM module. After the module is loaded, you can further create the virtual machine from another tool. But only the KVM module is not enough, because the user cannot directly control the kernel module to do things: there must be a user-space tool. This user-space tool, the developer chooses the already formed open source virtualization software QEMU. It says QEMU is also a virtualization software. It is characterized by a virtual different CPU. For example, a power CPU can be virtualized on a x86 CPU, and it can be used to compile programs that can run on power. KVM uses a subset of QEMU and is transformed into a user-space tool that can control KVM. So you'll see that the official KVM download has two major three files, namely the KVM module, the Qemu tool, and the collection. That is, you can upgrade only the KVM module, or you can upgrade only the Qemu tool. This is the relationship between KVM and QEMU.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.