[RFC v5 34/38] procfs: display the protection-key number associated with a vma

[Ram Pai]

On Mon, Jul 10, 2017 at 08:37:28AM +0530, Anshuman Khandual wrote:
> On 07/06/2017 02:52 AM, Ram Pai wrote:
> > Display the pkey number associated with the vma in smaps of a task.
> > The key will be seen as below:
> > 
> > ProtectionKey: 0
> > 
> > Signed-off-by: Ram Pai <linuxram at us.ibm.com>
> > ---
> >  arch/powerpc/kernel/setup_64.c |    8 ++++++++
> >  1 files changed, 8 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
> > index f35ff9d..ebc82b3 100644
> > --- a/arch/powerpc/kernel/setup_64.c
> > +++ b/arch/powerpc/kernel/setup_64.c
> > @@ -37,6 +37,7 @@
> >  #include <linux/memblock.h>
> >  #include <linux/memory.h>
> >  #include <linux/nmi.h>
> > +#include <linux/pkeys.h>
> >  
> >  #include <asm/io.h>
> >  #include <asm/kdump.h>
> > @@ -745,3 +746,10 @@ static int __init disable_hardlockup_detector(void)
> >  }
> >  early_initcall(disable_hardlockup_detector);
> >  #endif
> > +
> > +#ifdef CONFIG_PPC64_MEMORY_PROTECTION_KEYS
> 
> Why not for X86 protection keys ?

hmm.. I dont understand the comment.


-- 
Ram Pai