This is not entirely settled because of future compatibility concern
but in terms of Linux code and existing processors I think the approach
works.
Thanks,
Nick
Nicholas Piggin (5):
powerpc/64s: update_mmu_cache inline the radix test
powerpc/64s: implement mm_nmmu_has_tlbs
powerpc/64s: add CONFIG_PPC_NMMU for nest MMU support
powerpc/64s/radix: implement complete radix__ptep_get_and_clear_full
powerpc/64s/radix: Use non-atomic PTE updates if the MMU does not
modify the PTE
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/book3s/64/mmu.h | 2 +
arch/powerpc/include/asm/book3s/64/pgtable.h | 10 +--
arch/powerpc/include/asm/book3s/64/radix.h | 50 +++++------
arch/powerpc/include/asm/book3s/64/tlbflush.h | 11 ++-
arch/powerpc/include/asm/book3s/pgtable.h | 11 ++-
arch/powerpc/include/asm/mmu_context.h | 5 +-
arch/powerpc/mm/book3s32/mmu.c | 4 +-
arch/powerpc/mm/book3s64/hash_utils.c | 7 +-
arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 3 +-
arch/powerpc/mm/book3s64/radix_pgtable.c | 82 +++++++++++++++----
arch/powerpc/mm/book3s64/radix_tlb.c | 26 +++---
arch/powerpc/platforms/Kconfig | 3 +
arch/powerpc/platforms/powernv/Kconfig | 1 +
14 files changed, 134 insertions(+), 82 deletions(-)
--
2.23.0
