Xen 裸机管理程序 [英] Xen bare metal hypervisor

问题描述

我首先认为 Xen 是一个主机管理程序.但我后来发现它是一个裸机管理程序.Xen 如何成为裸机管理程序?

I first thought that Xen was a host hypervisor. But i later found that it was a bare metal hypervisor. How does Xen qualify as a Bare metal hypervisor ?

推荐答案

因为 Xen 可以直接从 BIOS 启动，Xen 和硬件之间无需任何其他操作系统.VMware ESXi 类似(区别于需要主机操作系统的 VMware 工作站).

Because Xen can be booted to directly from BIOS, without any other operating system in between Xen and the hardware. VMware ESXi is similar (differentiating itself from VMware workstation which requires a host OS).

Xen 的 dom0 privleged guest 可以在启用 Xen 之前安装在系统上，从而混淆是否是裸机安装，但从技术上讲，它是启动 dom0 来宾的真正裸机安装.请注意，您通常可以启动一个替代内核，该内核将绕过 Xen 并将 dom0guest"作为真正的非虚拟化主机(未启用 Xen)启动.

Xen's dom0 privleged guest can be installed on the system before Xen is enabled, thus confusing matters about whether it is a bare metal install or not, but it is technically a true bare metal install that starts the dom0 guest. Note that you can often boot an alternate kernel which will bypass Xen and boot the dom0 "guest" as a true non-virtualized host (without Xen enabled).

这篇关于Xen 裸机管理程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！