We can upgrade pte access (R -> RW transition) via mprotect or autonuma. We need
to make sure we follow the recommended pte update sequence as outlined in
commit: bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang")
for such updates. This patch series do that.
Aneesh Kumar K.V (5):
mm: Update ptep_modify_prot_start/commit to take vm_area_struct as arg
mm: update ptep_modify_prot_commit to take old pte value as arg
arch/powerpc/mm: Nest MMU workaround for mprotect/autonuma RW upgrade.
mm/hugetlb: Add prot_modify_start/commit sequence for hugetlb update
arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW
upgrade
arch/powerpc/include/asm/book3s/64/hugetlb.h | 8 +++++
arch/powerpc/include/asm/book3s/64/pgtable.h | 18 ++++++++++
arch/powerpc/include/asm/hugetlb.h | 2 +-
arch/powerpc/mm/hugetlbpage.c | 35 ++++++++++++++++++++
arch/powerpc/mm/pgtable-book3s64.c | 34 +++++++++++++++++++
arch/s390/include/asm/pgtable.h | 5 +--
arch/s390/mm/pgtable.c | 8 +++--
arch/x86/include/asm/paravirt.h | 9 +++--
fs/proc/task_mmu.c | 8 +++--
include/asm-generic/pgtable.h | 10 +++---
include/linux/hugetlb.h | 18 ++++++++++
mm/hugetlb.c | 8 +++--
mm/memory.c | 8 ++---
mm/mprotect.c | 6 ++--
14 files changed, 150 insertions(+), 27 deletions(-)
--
2.17.1
