Re: [PATCH v13 0/3] mm, x86, powerpc: Enhancements to Memory Protection Keys.

[Michael Ellerman]

Ram Pai <linuxram@xxxxxxxxxx> writes:

> This patch series provides arch-neutral enhancements to
> enable memory-keys on new architecutes, and the corresponding
> changes in x86 and powerpc specific code to support that.
>
> a) Provides ability to support upto 32 keys.  PowerPC
>         can handle 32 keys and hence needs this.
>
> b) Arch-neutral code; and not the arch-specific code,
>    determines the format of the string, that displays the key
>    for each vma in smaps.
>
> History:
> -------
> version 14:

This doesn't match the patch subjects, which is a little confusing :)

> 	(1) made VM_PKEY_BIT4 unusable on x86, #defined it to 0
> 		-- comment by Dave Hansen
> 	(2) due to some reason this patch series continue to
> 	      break some or the other build. The last series
> 	      passed everything but created a merge
> 	      conflict followed by build failure for
> 	      Michael Ellermen. :(

I have a fix, it involved some cleanup of headers prior to the smaps
change.

Will post it.

cheers