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Device Assignment with Nested Guests and DPDK

Device Assignment with Nested Guests and DPDK

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I/O virtualization is one of the most important aspect of virtualization technology. Generally speaking we can have three types of I/O devices in a virtual machine: emulated, para-virtualized, and device assignment. Here device assignment plays a vital role in performance critical scenarios, which allows a guest to seamlessly manipulate a real hardware device. However that was never safe to run DPDK with such a device, and even impossible for nested virtualization. In this presentation, Peter Xu will introduce his work on QEMU/KVM vIOMMU to enable these scenarios. It will contain not only how new users can start using the new feature, but also technical details and challenges on the project.
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