Andrew,
How do you want to merge this? Michael Ellerman suggests this should go
via -mm tree.
-aneesh
"Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> writes:
> We can upgrade pte access (R -> RW transition) via mprotect. 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.
>
> Changes from V4:
> * Drop EXPORT_SYMBOL
>
> Changes from V3:
> * Build fix for x86
>
> Changes from V2:
> * Update commit message for patch 4
> * use radix tlb flush routines directly.
>
> Changes from V1:
> * Restrict ths only for R->RW upgrade. We don't need to do this for Autonuma
> * Restrict this only for radix translation mode.
>
>
> 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 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 | 12 ++++++++++
> arch/powerpc/include/asm/book3s/64/pgtable.h | 18 ++++++++++++++
> arch/powerpc/include/asm/book3s/64/radix.h | 4 ++++
> arch/powerpc/mm/hugetlbpage-hash64.c | 25 ++++++++++++++++++++
> arch/powerpc/mm/hugetlbpage-radix.c | 17 +++++++++++++
> arch/powerpc/mm/pgtable-book3s64.c | 25 ++++++++++++++++++++
> arch/powerpc/mm/pgtable-radix.c | 18 ++++++++++++++
> arch/s390/include/asm/pgtable.h | 5 ++--
> arch/s390/mm/pgtable.c | 8 ++++---
> arch/x86/include/asm/paravirt.h | 13 +++++-----
> arch/x86/include/asm/paravirt_types.h | 5 ++--
> arch/x86/xen/mmu.h | 4 ++--
> arch/x86/xen/mmu_pv.c | 8 +++----
> fs/proc/task_mmu.c | 8 ++++---
> include/asm-generic/pgtable.h | 18 +++++++-------
> include/linux/hugetlb.h | 20 ++++++++++++++++
> mm/hugetlb.c | 8 ++++---
> mm/memory.c | 8 +++----
> mm/mprotect.c | 6 ++---
> 19 files changed, 189 insertions(+), 41 deletions(-)
>
> --
> 2.20.1
