Managing host hardware configuration for virtual machine migration

A system comprising:

• a memory;
• and
• a processor, operatively coupled to the memory, the processor to:
• receive, by the system, a source hardware configuration data structure describing a hardware configuration of a source host computer system for a virtual machine;
• receive at least a part of a state of the virtual machine being migrated from the source host computer system;
• generate a destination hardware configuration data structure describing a hardware configuration of the system;
• start the virtual machine on the system;
• compare the source virtual machine configuration data structure and the destination virtual machine configuration data structure;
• responsive to detecting a difference between the source virtual machine configuration data structure and the destination virtual machine configuration data structure, notify the virtual machine of a hardware configuration change;
• receive, from the virtual machine, a hardware configuration request;
• and
• provide the destination hardware configuration data structure to another memory accessible by the virtual machine.

A non-transitory computer readable storage medium comprising instructions that, when executed by a processor, cause the processor to perform operations comprising:

• receiving, by a source host computer system, a destination hardware configuration data structure describing a hardware configuration of a destination host computer system for a virtual machine;
• transmitting, to the destination host computer system, at least a part of a state of the virtual machine being migrated from the source host computer system to the destination host computer system;
• comparing a source virtual machine configuration data structure and the destination virtual machine configuration data structure, the source virtual machine configuration data structure describing a hardware configuration of the source host computer system;
• and
• notifying the destination host computer system of a difference between the destination virtual machine configuration data structure and the source virtual machine configuration data structure.