You need support for multiple guest operating systems.
需要支持多客户操作系统。
The guest operating systems reside on the hypervisor.
来宾操作系统位于管理程序中。
Guest operating systems must perform fully automated builds.
客户操作系统必须执行完全自动化的构建。
They run directly on the hardware with guest operating systems running on top of them.
它们直接运行在硬件上，虚拟的操作系统又运行在它们之上。
But this kernel can also support guest operating systems, loaded through the KVM utility.
但是这个内核也可以支持通过kvm工具加载的客户操作系统。
Above the hypervisor are the guest operating systems, also called virtual machines (VMs).
系统管理程序之上是客户机操作系统，也称为虚拟机(VM)。
Because NOVA implements full virtualization, unmodified guest operating systems are supported.
由于NOVA实现了全面虚拟化，因此支持未更改的来宾操作系统。
While simple, this process illustrates how you can instantiate new guest operating systems with KVM.
尽管这个过程非常简单，但是它解释了如何使用 KVM实例化新客户操作系统。
Window view would be the most reliable and familiar method of viewing guest operating systems .
窗口显示模式是显示客操作系统最为可靠的，并且也最广为用户所熟悉的方式。
A hypervisor sits between the guest operating systems and the bare hardware as an abstraction layer.
在客户操作系统和裸硬件之间有一个hypervisor作为抽象层使用。
To run 64-bit guest operating systems, the host system must have one of the following processors.
要运行64位客户机操作系统，主机系统必须具备以下处理器之一。
After we installed the server operating system, we configured it for access by the guest operating systems.
安装好服务器操作系统后，我们将它配置为可由客户操作系统访问。
This is similar to the way that hypervisors abstract the bare hardware from the guest operating systems.
这与hypervisor从客户(guest)操作系统对裸机进行抽象的方式很相似。
The system relies on paravirtualization, so that guest operating systems are aware that they are virtualized.
此系统依赖半虚拟化，以便来宾操作系统意识到它们已被虚拟化。
Because the guest operating systems are fully separated from the underlying hardware, they can run unmodified.
由于客户操作系统与底层硬件完全分离，因此不需要修改就可以运行。
We decided to segregate the Web store and the images for the guest operating systems into separate partitions.
我们决定将客户操作系统的Web存储和映像分离到单独的分区中。
This permits multiple processors and other resources to be virtualized for a number of guest operating systems.
这样，多个处理器和其他资源就可以在多个客户操作系统上被虚拟化。
This module allows other guest operating systems to then run in user-space of the host Linux kernel (see Figure 7).
这个模块允许使用其他客户操作系统，然后在宿主Linux内核的用户空间中运行(参见图7)。
The VT-x supports two new forms of operation, one for the VMM (root) and one for guest operating systems (non-root).
VT - x支持两种格式的操作，一种用于VMM (root)，另外一种用于客户操作系统(非root)。
Recall Figure 4 in the KVM discussion: In addition to the guest operating systems, there's the KVM-modified QEMU.
回顾一下讨论KVM 时的图4：除了来宾操作系统之外，还使用了修改了 KVM的QEMU。
This model USES a virtual machine that mediates between the guest operating systems and the native hardware (see Figure 2).
这种模型使用一个虚拟机，它在客户操作系统和原始硬件之间进行协调(参见图2)。
New processors incorporate advanced instructions to make guest operating systems and hypervisor transitions more efficient.
新的处理器通过纳入高级指令来让来宾操作系统到 hypervisor 的过渡更加高效。
Some of the virtualization players provide a facility to save the context or suspend the running tasks on guest operating systems.
一些虚拟化 player提供了保存上下文或者暂停在访客操作系统上运行的任务的功能。
For example, Lguest virtualizes only other Lguest-enabled guest operating systems and currently only for the x86 architecture.
例如，Lguest仅虚拟化其他支持Lguest的来宾操作系统，并且目前仅能用于x86架构。
Buildserver.rex: This script runs on the Web server and maintains the queues that the guest operating systems use to look for work.
rex：该脚本运行在Web服务器上并维护客户操作系统用于查找工作的队列。
This means that guest operating systems know that they're being virtualized, and this knowledge comes with performance enhancements.
这意味着来宾操作系统知道自己正在被虚拟化，并且这同时还会改进性能。
Virtualization players run on host operating systems and provide the complete hardware virtualization to the guest operating systems.
虚拟化player在宿主操作系统上运行，向访客操作系统提供完整的硬件虚拟化。
The first concept that comes to the mind of the average industry professional is running one or more guest operating systems on a host.
对于一般的从业人员来讲，他们的第一反应会是在一个宿主机上运行一个或多个虚拟(客户)操作系统。
Among other things, Pacifica maintains a control block for guest operating systems that are saved on execution of special instructions.
除了其他一些特性之外，Pacifica还为在特殊指令执行时保存的客户操作系统维护了一个控制块。
As I mentioned, paravirtualization requires the guest operating systems to be modified for the hypervisor, which is a disadvantage.
正如前面介绍的一样，超虚拟化技术需要为hypervisor修改客户操作系统，这是它的一个缺点。
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