Re: [PATCH 22/34] x86, pkeys: dump PTE pkey in /proc/pid/smaps

[Thomas Gleixner]

On Thu, 3 Dec 2015, Dave Hansen wrote:
> The protection key can now be just as important as read/write
> permissions on a VMA.  We need some debug mechanism to help
> figure out if it is in play.  smaps seems like a logical
> place to expose it.
> 
> arch/x86/kernel/setup.c is a bit of a weirdo place to put
> this code, but it already had seq_file.h and there was not
> a much better existing place to put it.
> 
> We also use no #ifdef.  If protection keys is .config'd out
> we will get the same function as if we used the weak generic
> function.
> 
> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/