US Patent 11182092 PRI overhead reduction for virtual machine migration

The present disclosure provides a new and innovative system, methods and apparatus for PRI overhead reduction for virtual machine migration. In an example, a system includes a memory and a hypervisor. The memory includes a plurality of memory addresses on a source host. The hypervisor is configured to generate a migration page table associated with the memory. The hypervisor is also configured to receive a migration command to copy data from a portion of the memory to a destination host. A first range of memory addresses includes data copied from the portion of the memory and a second range of memory addresses includes data that is not copied. The hypervisor is also configured to modify the migration page table to include a page table entry associated with the first range of memory addresses being migrated from the source host to the destination host.