当前位置:网站首页>[QNX Hypervisor 2.2用户手册]8.7 虚拟I/O(VIRTIO)
[QNX Hypervisor 2.2用户手册]8.7 虚拟I/O(VIRTIO)
2022-07-21 22:59:00 【高桐@BILL】
[QNX Hypervisor 2.2用户手册]专栏目录导航
VIRTIO是实现虚拟设备比较便捷和俄通用的标准;使用VIRTIO虚拟设备可以减少虚拟化开销。
QNX Hypervisor当前支持VIRTIO1.1规范。VIRTIO的好处包括如下:
- 实现 - 对于Linux和Android内核不需要任何变更;
- 高效 - VIRTIO使用虚拟队列,这种虚拟队列可以高效地搜集共享设备上传输的数据;
- 序列化的队列 - 底层硬件可以以序列化的方式处理请求。
- Guest性能 - 即使共享硬件的队列是序列化的,Guest可以创建多个队列而不需要任何阻塞。Guest仅会在等完成时才会被阻塞;(例如,调用刷新数据)
更多关于VIRTIO的信息,包括最新的知道文档,请参考Organization for the Advancement of Structured Information Standards (OASIS) 网站上的OASIS Virtual I/O Device (VIRTIO) TC ,以及Edouard Bugnion, Jason Nieh and Dan Tsafrir,Hardware and Software Support for Virtualization (Morgan & Claypool, 2
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