Abstract: Migrating interrupts from a source I/O adapter of a source computing system to a destination I/O adapter of a destination computing system, includes: collecting, by a source hypervisor of the source computing system, interrupt mapping information, were the source hypervisor supports operation of a logical partition executing on the source computing system and the logical partition is configured to receive interrupts from the source I/O adapter; configuring, by the destination hypervisor of the destination computing system, the destination computing system with the interrupt mapping information collected by the source hypervisor; placing, by a destination hypervisor of the destination computing system, the destination I/O adapter in an error state; migrating the logical partition from the source computing system to the destination computing system; and restarting the logical partition on the destination computing system, including recovering, by the logical partition, from the error state.

Abstract: A method, system and computer program product are provided for implementing dynamic adjustment of resources allocated to Single Root Input/Output Virtualization (SRIOV) Remote Direct Memory Access (RMDA) virtual functions (VFs) in Cloud Software Defined Server environments. A hardware management console (HMC), and a hypervisor are used to implement resource allocation to the SRIOV RDMA VFs based on resource usage. The hypervisor checks resource usage for the resource allocations of the SRIOV RDMA VF relative to lower and upper threshold values. Responsive to identifying the resource usage below the lower threshold or above the upper threshold, the hypervisor sends an event to the HMC, and the HMC starts a resource redistribution process.