Migrating MMIO from a source I/O adapter of a source computing system to a destination I/O adapter of a destination computing system

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United States of America Patent

PATENT NO 9875060
SERIAL NO

15467052

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Abstract

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Migrating memory MMIO 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, MMIO mapping information, where the source hypervisor supports a logical partition on the source computing system and the logical partition is configured for MMIO operations with the source I/O adapter through an MMU; 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; configuring, by the destination hypervisor of the destination computing system, the destination computing system for MMIO with the LPAR utilizing the MMIO mapping information collected by the source hypervisor; and restarting the logical partition on the destination computing system, including recovering, by the logical partition, from the error state.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arroyo, Jesse P Rochester, US 73 611
Graham, Charles S Rochester, US 81 1597
Kommineni, Prathima Hyderabad, IN 26 189
Schimke, Timothy J Stewartville, US 74 811

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