Alibaba Group Holding Limited
Virtual Machine Hot Migration Method, Apparatus, Electronic Device, and Computer Storage Medium

Abstract:

Virtual machine hot migration method, device, electronic device, and computer storage medium are provided. The method includes: switching a first page table used for indicating a mapping relationship between a memory address of a virtual guest and a physical address of a host machine in a first physical machine to a second page table according to a switching trigger instruction; and performing a hot migration of the virtual guest from the first physical machine to a second physical machine according to the second page table, wherein a size of a physical memory page indicated by a last-level page table of the second page table satisfies a defined size, and a size of a physical memory page indicated by a last-level page table of the first page table is greater than the defined size. The embodiments of the present disclosure improve the performance of the virtual guest and its hot migration.