Patent ID: 9740647
Date: 2017-08-22
CPC Classifications: G06F

Claim:
1. A method of migrating direct memory access (‘DMA’) mappings from a source input/output (‘I/O’) adapter of a computing system to a destination I/O adapter of the computing system, the method comprising: collecting, by a hypervisor of the computing system, DMA mapping information, wherein the hypervisor supports operation of a logical partition executing on the computing system and the logical partition is configured for DMA operations with the source I/O adapter utilizing the DMA mapping information; configuring, by the hypervisor, the destination I/O adapter with DMA mappings based on the DMA mapping information collected by the hypervisor; placing, by the hypervisor, the source and destination I/O adapter in an error state; deconfiguring the source I/O adapter from the logical partition; and enabling the logical partition and destination I/O adapter to recover from the error state.