linux-kernel - Re: [RFC v4 02/17] mm: ability to disable execute permission on a key at creation

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Message-ID: <1498563169.7935.16.camel@gmail.com>
Date:   Tue, 27 Jun 2017 21:32:49 +1000
From:   Balbir Singh <bsingharora@...il.com>
To:     Ram Pai <linuxram@...ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, x86@...nel.org, linux-doc@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Cc:     benh@...nel.crashing.org, paulus@...ba.org, mpe@...erman.id.au,
        khandual@...ux.vnet.ibm.com, aneesh.kumar@...ux.vnet.ibm.com,
        dave.hansen@...el.com, hbabu@...ibm.com, arnd@...db.de,
        akpm@...ux-foundation.org, corbet@....net, mingo@...hat.com
Subject: Re: [RFC v4 02/17] mm: ability to disable execute permission on a
 key at creation

On Tue, 2017-06-27 at 03:11 -0700, Ram Pai wrote:
> Currently sys_pkey_create() provides the ability to disable read
> and write permission on the key, at  creation. powerpc  has  the
> hardware support to disable execute on a pkey as well.This patch
> enhances the interface to let disable execute  at  key  creation
> time. x86 does  not  allow  this.  Hence the next patch will add
> ability  in  x86  to  return  error  if  PKEY_DISABLE_EXECUTE is
> specified.
> 
> Signed-off-by: Ram Pai <linuxram@...ibm.com>
> ---

Acked-by: Balbir Singh <bsingharora@...il.com>