[PATCH V5 5/5] arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW upgrade

[Michael Ellerman]

"Aneesh Kumar K.V" <aneesh.kumar at linux.ibm.com> writes:

> 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")

Odd "Fixes:" again.

> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
> ---
>  arch/powerpc/include/asm/book3s/64/hugetlb.h | 12 ++++++++++
>  arch/powerpc/mm/hugetlbpage-hash64.c         | 25 ++++++++++++++++++++
>  arch/powerpc/mm/hugetlbpage-radix.c          | 17 +++++++++++++
>  3 files changed, 54 insertions(+)

Same comment about inlining.

But otherwise looks good.

Reviewed-by: Michael Ellerman <mpe at ellerman.id.au>

cheers