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摘要： As the Userspace I/O HOWTO says For many types of devices, creating a Linux kernel driver is overkill. All that is really needed is some way to handle 阅读全文

摘要： 一个设备驱动的主要任务有两个： 1. 存取设备的内存 2. 处理设备产生的中断 对于第一个任务。UIO 核心实现了mmap()能够处理物理内存(physical memory)，逻辑内存(logical memory)， 虚拟内存(virtual memory)。UIO驱动的编写是就不须要再考虑这些 阅读全文

摘要： With the publishing of OASIS virtio specification version 1.0, virtio made another big step in becoming an official standard from a De-Facto standard 阅读全文