[PATCH v13 00/11] Support page table check on PowerPC

[Andrew Donnellan]

On Wed, 2025-02-12 at 03:13 +1100, 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, seperate
> set_pte_at()
> and set_pte_at_unchecked(), to allow for internal, uninstrumented
> mappings.

Talking to Maddy about this off-list - given that this series touches
on generic code and several architectures, would it be best to take it
through the mm tree rather than powerpc?

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