Changes

=== Post-copy for shared memory and hugetlbfs ===

=== Post-copy for shared memory and hugetlbfs ===

   

   

'''Summary:''' extend post-copy memory restore and migration to support shared memory and hugeltbfs.

'''Summary:''' extend post-copy memory restore and migration to support shared memory and hugetlbfs.

CRIU relies on [[Userfaultfd]] mechanism in the Linux kernel to implement the demand paging in userspace and allow post-copy memory (or lazy) [[Lazy_migration|migration]]. However, currently this support is limited to anonymous private memory mappings, although kernel also supports shared memory areas and hugetlbfs backed memory.

CRIU relies on [[Userfaultfd]] mechanism in the Linux kernel to implement the demand paging in userspace and allow post-copy memory (or lazy) [[Lazy_migration|migration]]. However, currently this support is limited to anonymous private memory mappings, although kernel also supports shared memory areas and hugetlbfs backed memory.