From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E34BFC43387 for ; Thu, 10 Jan 2019 20:36:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA23720879 for ; Thu, 10 Jan 2019 20:36:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729773AbfAJUg5 (ORCPT ); Thu, 10 Jan 2019 15:36:57 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:45494 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729564AbfAJUg5 (ORCPT ); Thu, 10 Jan 2019 15:36:57 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x0AKYJjd139824 for ; Thu, 10 Jan 2019 15:36:56 -0500 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0a-001b2d01.pphosted.com with ESMTP id 2pxc522qfh-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 10 Jan 2019 15:36:55 -0500 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 10 Jan 2019 20:36:42 -0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x0AKaflZ15859874 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 10 Jan 2019 20:36:41 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6BB5742042; Thu, 10 Jan 2019 20:36:41 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 065314203F; Thu, 10 Jan 2019 20:36:40 +0000 (GMT) Received: from osiris (unknown [9.145.24.85]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 10 Jan 2019 20:36:39 +0000 (GMT) Date: Thu, 10 Jan 2019 21:36:38 +0100 From: Heiko Carstens To: Arnd Bergmann Cc: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, ink@jurassic.park.msu.ru, mattst88@gmail.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com, geert@linux-m68k.org, monstr@monstr.eu, paul.burton@mips.com, deller@gmx.de, mpe@ellerman.id.au, schwidefsky@de.ibm.com, dalias@libc.org, davem@davemloft.net, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, jcmvbkbc@gmail.com, firoz.khan@linaro.org, ebiederm@xmission.com, deepa.kernel@gmail.com, linux@dominikbrodowski.net, akpm@linux-foundation.org, dave@stgolabs.net, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org Subject: Re: [PATCH 15/15] arch: add pkey and rseq syscall numbers everywhere References: <20190110162435.309262-1-arnd@arndb.de> <20190110162435.309262-16-arnd@arndb.de> MIME-Version: 1.0 In-Reply-To: <20190110162435.309262-16-arnd@arndb.de> X-TM-AS-GCONF: 00 x-cbid: 19011020-0020-0000-0000-000003049593 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19011020-0021-0000-0000-000021559B2E Message-Id: <20190110203638.GB3676@osiris> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit Content-Disposition: inline X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-10_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=5 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=966 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901100159 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 10, 2019 at 05:24:35PM +0100, Arnd Bergmann wrote: > Most architectures define system call numbers for the rseq and pkey system > calls, even when they don't support the features, and perhaps never will. > > Only a few architectures are missing these, so just define them anyway > for consistency. If we decide to add them later to one of these, the > system call numbers won't get out of sync then. > > Signed-off-by: Arnd Bergmann > diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h > index a1fbf15d53aa..ed08f114ee91 100644 > --- a/arch/s390/include/asm/unistd.h > +++ b/arch/s390/include/asm/unistd.h > @@ -11,9 +11,6 @@ > #include > > #define __IGNORE_time > -#define __IGNORE_pkey_mprotect > -#define __IGNORE_pkey_alloc > -#define __IGNORE_pkey_free > > #define __ARCH_WANT_NEW_STAT > #define __ARCH_WANT_OLD_READDIR > diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl > index 428cf512a757..f84ea364a302 100644 > --- a/arch/s390/kernel/syscalls/syscall.tbl > +++ b/arch/s390/kernel/syscalls/syscall.tbl > @@ -391,6 +391,9 @@ > 381 common kexec_file_load sys_kexec_file_load compat_sys_kexec_file_load > 382 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents > 383 common rseq sys_rseq compat_sys_rseq > +384 common pkey_alloc sys_pkey_alloc sys_pkey_alloc > +385 common pkey_free sys_pkey_free sys_pkey_free > +386 common pkey_mprotect sys_pkey_mprotect sys_pkey_mprotect Since you only need/want the system call numbers, could you please change these lines to: > +384 common pkey_alloc - - > +385 common pkey_free - - > +386 common pkey_mprotect - - Otherwise it _looks_ like we would need compat wrappers here as well, even though all of them would just jump to sys_ni_syscall() in this case. Making this explicit seems to better.