Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753281AbdGJDHp (ORCPT ); Sun, 9 Jul 2017 23:07:45 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:50844 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753161AbdGJDHm (ORCPT ); Sun, 9 Jul 2017 23:07:42 -0400 From: Anshuman Khandual Subject: Re: [RFC v5 34/38] procfs: display the protection-key number associated with a vma To: Ram Pai , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org References: <1499289735-14220-1-git-send-email-linuxram@us.ibm.com> <1499289735-14220-35-git-send-email-linuxram@us.ibm.com> Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, dave.hansen@intel.com, hbabu@us.ibm.com, arnd@arndb.de, akpm@linux-foundation.org, corbet@lwn.net, mingo@redhat.com Date: Mon, 10 Jul 2017 08:37:28 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <1499289735-14220-35-git-send-email-linuxram@us.ibm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable x-cbid: 17071003-0040-0000-0000-00000342E51C X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17071003-0041-0000-0000-00000CBE32DA Message-Id: <1162ac6c-5e34-8a6c-fed2-6683d261352c@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-10_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1707100053 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 924 Lines: 31 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 > --- > 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 > #include > #include > +#include > > #include > #include > @@ -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 ?