Commits
Aneesh Kumar K.V committed ca94573b9c6
powerpc/mm/radix: Update pte update sequence for pte clear case In the kernel we do follow the below sequence in different code paths. pte = ptep_get_clear(ptep) .... set_pte_at(ptep, pte) We do that for mremap, autonuma protection update and softdirty clearing. This implies our optimization to skip a tlb flush when clearing a pte update is not valid, because for DD1 system that followup set_pte_at will be done witout doing the required tlbflush. Fix that by always doing the dd1 style pte update irrespective of new_pte value. In a later patch we will optimize the application exit case. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Tested-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>