换句话说，Xenhypervisor是硬件之上一层薄的软件层。为了在Xen hypervisor上运行，每个guest操作系统的内核和驱动程序都必须作出修改。
In other words, the Xen hypervisor is a thin layer of software that sits on top of the hardware; each guest operating system's kernel and drivers have to be modified to run on it.
GPFS可移植层（PL）是内核特有的，必须为集群中的每个操作系统级别单独创建。
The GPFS portability layer (PL) is kernel-specific, and it must be created separately for each operating system level within your cluster.
首先，类似于将用户空间应用程序和内核函数连接起来的系统调用，一个通常可用的虚拟化调用(hapercall, hypervisor对操作系统进行的系统调用)层允许来宾系统向宿主操作系统发出请求。
First, similar to system calls that bridge user-space applications with kernel functions, a hypercall layer is commonly available that allows guests to make requests of the host operating system.
在操作系统内核层中，阐述了控制板mcu2启动的过程，以及启动闪存的规划和使用问题。
In OS Kernel layer, this article describes the MCU2 board's initialization procedure and the layout and functions for boot flash.
这种虚拟技术以Xen为代表，其特点是修改操作系统的内核，加入一个Xen Hypervisor层。
This virtual technology represented by Xen, which is characterized by modifying the operating system kernel, adding a Xen Hypervisor layer.
这个移植的特点就是把DOS内核和底层硬件驱动合起来作为操作系统的硬件抽象层调用。
A typical character of our system is that the HAL includes the DOS kernel and device driving, because we used the DOS kernel as the hardware boot_loader.
操作系统内核体系结构的设计采用了建立在纳核层上的微内核结构，并在微内核的构建中融合了基于对象技术，克服了传统微内核结构消息传递机制效率低下的缺点。
The architecture of the kernel is a micro-kernel developed with objects and based on a nano-kernel. It overcomes the shortcoming of inefficiency of traditional micro-kernel.
操作系统内核体系结构的设计采用了建立在纳核层上的微内核结构，并在微内核的构建中融合了基于对象技术，克服了传统微内核结构消息传递机制效率低下的缺点。
The architecture of the kernel is a micro-kernel developed with objects and based on a nano-kernel. It overcomes the shortcoming of inefficiency of traditional micro-kernel.
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