[PATCH 3/5] arch/powerpc/mm: Nest MMU workaround for mprotect/autonuma RW upgrade.

NestMMU requires us to mark the pte invalid and flush the tlb when we do a RW upgrade of pte. We fixed a variant of this in the fault path in commit Fixes: bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang") Do the same for mprotect and autonuma upgrades.

[PATCH 3/5] arch/powerpc/mm: Nest MMU workaround for mprotect/autonuma RW upgrade.

NestMMU requires us to mark the pte invalid and flush the tlb when we do a RW upgrade of pte. We fixed a variant of this in the fault path in commit Fixes: bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang") Do the same for mprotect and autonuma upgrades.