Virtual Remote Direct Memory Access Management

摘要

A method performed by a physical computing system includes, with a hypervisor, presenting a virtualized Remote Direct Memory Access (RDMA) device to a guest, with the hypervisor, allocating a portion of total guest memory to the guest, with the hypervisor, determining a memory threshold for the guest, the memory threshold being based on a number of virtual machines managed by the hypervisor and a size of total guest memory, with the hypervisor, receiving from the guest, a first request to register a first size sub-portion of the portion of total guest memory to the virtualized RDMA device, and with the hypervisor, in response to determining that the first size sub-portion exceeds the memory threshold, returning a notification to the guest, the notification indicating that the first request failed. The first size sub-portion is less than the portion of total guest memory.

主权项

1. A method performed by a physical computing system, the method comprising:
with a hypervisor, presenting a virtualized Remote Direct Memory Access (RDMA) device to a guest; with the hypervisor, allocating a portion of total guest memory to the guest; with the hypervisor, determining a memory threshold for the guest, the memory threshold being based on a number of virtual machines managed by the hypervisor and a size of total guest memory; with the hypervisor, receiving from the guest, a first request to register a first size sub-portion of the portion of total guest memory to the virtualized RDMA device; and with the hypervisor, in response to determining that the first size sub-portion exceeds the memory threshold, returning a notification to the guest, the notification indicating that the first request failed; wherein the first size sub-portion is less than the portion of total guest memory.