Re: [PATCH v12 07/11] mm: Add address parameter to arch_validate_prot()

[Michael Ellerman]

Khalid Aziz <khalid.aziz@xxxxxxxxxx> writes:

> A protection flag may not be valid across entire address space and
> hence arch_validate_prot() might need the address a protection bit is
> being set on to ensure it is a valid protection flag. For example, sparc
> processors support memory corruption detection (as part of ADI feature)
> flag on memory addresses mapped on to physical RAM but not on PFN mapped
> pages or addresses mapped on to devices. This patch adds address to the
> parameters being passed to arch_validate_prot() so protection bits can
> be validated in the relevant context.
>
> Signed-off-by: Khalid Aziz <khalid.aziz@xxxxxxxxxx>
> Cc: Khalid Aziz <khalid@xxxxxxxxxxxxxx>
> Reviewed-by: Anthony Yznaga <anthony.yznaga@xxxxxxxxxx>
> ---
> v8:
> 	- Added addr parameter to powerpc arch_validate_prot() (suggested
> 	  by Michael Ellerman)
> v9:
> 	- new patch
>
>  arch/powerpc/include/asm/mman.h | 4 ++--
>  arch/powerpc/kernel/syscalls.c  | 2 +-

These changes look fine to me:

Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc)

cheers