将晦涩难懂的技术讲的通俗易懂
发布时间:2018-07-29 18:49:31
SRVM:Hypervisor Support for Live Migration with Passthrough SR-IOV Network Devices——lvyilong316(译)SRVM是Vmware设计的一个用于SR-IOV场景对vm进行热迁移的模块,通过修改hypervisor来实现。SR-IOV(Single-Root I/O Virtualization)方式是一种直接将设备透传给vm的方式,由于设备直接passthro.........【阅读全文】
吻的感觉适2025-07-18 23:22
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https://txc.qq.com/products/762814/blog/2022639
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https://txc.qq.com/products/762833/blog/2022642
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https://txc.qq.com/products/762814/blog/2022647
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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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