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Providing notification to speculatively waking up target virtual machine for an I/O event using multiple virtual machines and processors
Providing notification to speculatively waking up target virtual machine for an I/O event using multiple virtual machines and processors
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机译:为使用多个虚拟机和处理器的I / O事件以推测方式唤醒目标虚拟机提供通知
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摘要
A computer system having a plurality of processor cores utilizes a device driver running in a driver virtual machine to handle I/O with the corresponding device for other virtual machines. A hypervisor in the computer system receives an interrupt from the corresponding device and identifies a virtual machine that best correlates to the received interrupt prior to forwarding the interrupt for handling by the driver virtual machine. The hypervisor then speculatively transmits a notification to the identified virtual machine to wake up and poll a memory shared between the identified virtual machine and the driver virtual machine. Once the driver virtual machine completes handling of the forwarded interrupt, it copies data made available by the corresponding device to the shared memory for access by the polling identified virtual machine.
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