[PATCH 03/16] mm: lift the x86_32 PAE version of gup_get_pte to common code

[Jason Gunthorpe]

On Tue, Jun 11, 2019 at 04:40:49PM +0200, Christoph Hellwig wrote:
> The split low/high access is the only non-READ_ONCE version of
> gup_get_pte that did show up in the various arch implemenations.
> Lift it to common code and drop the ifdef based arch override.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>  arch/x86/Kconfig                      |  1 +
>  arch/x86/include/asm/pgtable-3level.h | 47 ------------------------
>  arch/x86/kvm/mmu.c                    |  2 +-
>  mm/Kconfig                            |  3 ++
>  mm/gup.c                              | 51 ++++++++++++++++++++++++---
>  5 files changed, 52 insertions(+), 52 deletions(-)

Yep, the sh and mips conversions look right too.

Reviewed-by: Jason Gunthorpe <jgg at mellanox.com>
 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index f0c76ba47695..fe51f104a9e0 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -762,6 +762,9 @@ config GUP_BENCHMARK
>  
>  	  See tools/testing/selftests/vm/gup_benchmark.c
>
> +config GUP_GET_PTE_LOW_HIGH
> +	bool
> +

The config name seems a bit out of place though, should it be prefixed
with GENERIC_ or ARCH_?

Jason