MPSS Extended to Shared Memory

The multiple page size support (MPSS) for shared memory feature adds large page support for mapping shared memory and provides an out-of-box (OOB) policy for the use of large pages for shared memory. The MPSS support is for shared memory created by the mmap(1) of /dev/zero or with the MAP_ANON flag, and for System V shared memory. This feature also adds support for memcntl(2) changing the page size of these shared memory segments.

MPSS support is also extended for the use of large pages for memory created by the mmap(1), mmap(MAP_PRIVATE) of /dev/zero.