On Fri, 2025-04-11 at 15:43 +1000, Andrew Donnellan wrote:

Support page table check on all PowerPC platforms. This works by
serialising assignments, reassignments and clears of page table
entries at each level in order to ensure that anonymous mappings
have at most one writable consumer, and likewise that file-backed
mappings are not simultaneously also anonymous mappings.

In order to support this infrastructure, a number of stubs must be
defined for all powerpc platforms. Additionally, separate
set_pte_at()
and set_pte_at_unchecked(), to allow for internal, uninstrumented
mappings.

(This series was written by Rohan McLure, who has left IBM and is no
longer
working on powerpc.)

Anything more we need to get this merged?

Thanks,
-- 
Andrew Donnellan    OzLabs, ADL Canberra
ajd@linux.ibm.com   IBM Australia Limited