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    SubjectRe: [PATCH v13 0/3] mm, x86, powerpc: Enhancements to Memory Protection Keys.
    Date
    Ram Pai <linuxram@us.ibm.com> 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

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