将晦涩难懂的技术讲的通俗易懂
发布时间:2014-08-31 16:13:13
C++中名字查找与继承——lvyilong316C++调用成员函数的步骤一般为:(1) 首先确定函数调用的对象、引用或指针的静态类型。(2) 在该类中查找函数,如果找不到就在直接基类中找,如此循环直到查找到最上层基类。(3) 一旦.........【阅读全文】
发布时间:2014-08-06 16:43:01
进程将fd重定向后对exec的影响我们使用两个测试程序来验证,test.cpp用来实现从标准输入读入数据,然后将数据原样输出。代码如下:test.cpp点击(此处)折叠或打开#include <unistd.h>#include <stdlib.h>#i.........【阅读全文】
吻的感觉适2025-07-18 23:22
https://txc.qq.com/products/762843/blog/2022630
https://txc.qq.com/products/762814/blog/2022624
https://txc.qq.com/products/762833/blog/2022632
https://txc.qq.com/products/762839/blog/2022631
https://txc.qq.com/products/762835/blog/2022633
https://txc.qq.com/products/762845/blog/2022634
https://txc.qq.com/products/762810/blog/2022636
https://txc.qq.com/products/762848/blog/2022637
https://txc.qq.com/products/762843/blog/2022638
https://txc.qq.com/products/762814/blog/2022639
https://txc.qq.com/products/762839/blog/2022640
https://txc.qq.com/products/762833/blog/2022642
https://txc.qq.com/products/762810/blog/2022644
https://txc.qq.com/products/762843/blog/2022645
https://txc.qq.com/products/762814/blog/2022647
https://txc.qq.com/products/762833/blog/2022648
https://txc.qq.com/products/762843/blog/2022650
zf8292024-11-13 13:41
zf829:您好,请教大神一个问题,设备直通给VM时,中断到底会不会导致VM_EXIT吗,如果会,那VIRTIO直通时还会导致IO性能下降吧?“当透传设备产生中断时,vfio_msihandler ISR执行,该函数不做实际的服务程序处理,仅仅通过eventfd_signal激活irqfd_inject,然后最终调用deliver_posted_interrupt向虚机注入中断,中断号即为虚机配置透传设备时的中断号。” 这段描述在代码上我也仔细看了,逻辑肯定是对的,但另一方面我还是不确定中断到底会不会导致VM_EXIT
这里的中断主要是指数据包收发的中断
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