virtio

This paper provides a very thorough treatment of virtio and its internals .

这篇论文详尽阐述了virtio及其内部结构。

One of the most important benefits of virtio is performance in paravirtualized environments .

virtio的最重要优点之一是在半虚拟化环境中提升效率。

Virtio provides a common framework for the development of efficient para-virtualized drivers .

virtio为高效的准虚拟化驱动开发提供了通用框架。

The key behind virtio is exploiting paravirtualization to improve overall I / O performance .

virtio背后的秘密就是利用半虚拟化来改善总体I/O性能。

Let 's look at the internals of the virtio API and its components .

让我们查看virtioAPI的内部及其组件。

Specifically , this was implemented through a virtualized PCI interface using the virtio PCI driver .

尤其是，这是通过使用virtioPCI驱动程序的虚拟化PCI接口实现的。

Virtio is yet another example of the strengths and openness of Linux as a hypervisor .

virtio这个例子展示了将Linux用作hypervisor的强大之处和开放性。

Linux implements an I / O virtualization framework ( used by KVM ) called virtio .

Linux实现了名为virtio的I/O虚拟化框架（由KVM使用）。

The focus is on the virtio framework from the2.6.30 kernel release .

本文的重点是来自2.6.30内核发行版的virtio框架。

In sum , Virtio delivers most of the performance benefits of paravirtualization .

总之，使用Virtio可获得半虚拟化的最佳性能收益。

But even more important , virtio has been found to provide better performance ( 2-3 times for network I / O ) than current commercial solutions .

但更重要的是，实践证明virtio比现有的商业解决方案提供更出色的性能（网络I/O能够提升2-3倍）。

The libvirt wiki shows how to specify virtio devices in libvirt .

libvirtwiki展示了如何在libvirt中指定virtio设备。

Virtio was developed by Rusty Russell in support of his own virtualization solution called lguest .

virtio由RustyRussell开发，他当时的目的是支持自己的虚拟化解决方案lguest。

The virtio API relies on a simple buffer abstraction to encapsulate the command and data needs of the guest .

virtioAPI依赖一个简单的缓冲抽象来封装来宾操作系统需要的命令和数据。

Virtio opens up new opportunities for efficiency in paravirtualized I / O environments while building from previous work in Xen .

virtio为提高半虚拟化I/O环境中的效率带来了新的机会，同时能够利用Xen以前的成果。

This article touched on the intersection of libvirt ( an open virtualization API ) and the virtio framework .

本文讨论libvirt（一个开源虚拟化API）和virtio框架的相似之处。

Both of these virtualization solutions support virtio ( along with QEMU for system emulation and libvirt for virtualization management ) .

这两个虚拟化解决方案都支持virtio（以及用于系统模拟的QEMU和用于虚拟化管理的libvirt）。

This refers to the virtio_config_ops structure ( which defines the operations for configuring the virtio device ) .

这引用virtioconfigops结构（它定义配置virtio设备的操作）。

This article begins with an introduction to paravirtualization and emulated devices , and then explores the details of virtio .

本文在开篇时介绍半虚拟化和模拟设备，然后探索virtio的细节。

Although you may never develop front-end or back-end drivers for virtio , it implements an interesting architecture and is worth understanding in more detail .

也许您可能从来没有为virtio开发过前端或后端驱动程序，它实现了一个有趣的架构，值得您仔细去探索。

At the top level ( called virtio ) is the virtual queue interface that conceptually attaches front-end drivers to back-end drivers .

在顶级（称为virtio）的是虚拟队列接口，它在概念上将前端驱动程序附加到后端驱动程序。

Virtio has also been used in High-Performance Computing ( HPC ) research to develop inter-virtual machine ( VM ) communications through shared memory passing .

virtio还应用在High-PerformanceComputing（HPC）研究中，以开发出通过共享内存传递的inter-virtualmachine（VM）通信。

In a nutshell , virtio is an abstraction layer over devices in a paravirtualized hypervisor .

概而言之，virtio是半虚拟化hypervisor中位于设备之上的抽象层。

For example , the virtio network driver uses two virtual queues ( one for receive and one for transmit ), where the virtio block driver uses only one .

例如，virtio网络驱动程序使用两个虚拟队列（一个用于接收，另一个用于发送），而virtio块驱动程序仅使用一个虚拟队列。

Today , virtio and QEMU work together so emulated device transactions can be optimized between the Linux guest and QEMU emulator in the user space .

如今，virtio和QEMU可协同工作以便在用户空间内的Linuxguest和QEMU仿真器之间优化仿真设备事务。

From the previous section , you can see that virtio is an abstraction for a set of common emulated devices in a paravirtualized hypervisor .

从前面的小节可以看到，virtio是对半虚拟化hypervisor中的一组通用模拟设备的抽象。

These front-end and back-end drivers are where virtio comes in , providing a standardized interface for the development of emulated device access to propagate code reuse and increase efficiency .

通过在这些前端和后端驱动程序中的virtio，为开发模拟设备提供标准化接口，从而增加代码的跨平台重用率并提高效率。

Although the queue operations are the core of the virtio API , I provide a brief discussion of discovery , and then explore the virtqueue_ops operations in more detail .

尽管队列操作是virtioAPI的核心，我还是先简单讨论一下新的发现，然后再详细探讨virtqueueops操作。

One interesting use of virtio was the development of shared-memory message passing to allow VMs to communicate with one another through the hypervisor , as described in this paper from SpringerLink .

virtio的有趣应用之一是开发共享内存消息传递，以让VM能够通过hypervisor彼此通信，来自SpringerLink的论文对此进行了阐述。

The subdirectory . / drivers / virtio provides the implementation of the virtio interfaces ( virtio device , driver , virtqueue , and ring ) .

子目录./drivers/virtio提供virtio接口的实现（virtio设备、驱动程序、virtqueue和连接点）。