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[209.132.180.67]) by mx.google.com with ESMTP id z22si3507196pfd.197.2019.01.15.05.25.31; Tue, 15 Jan 2019 05:25:46 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@armlinux.org.uk header.s=pandora-2014 header.b=IM1vVjUk; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=armlinux.org.uk Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728641AbfAOLwx (ORCPT + 99 others); Tue, 15 Jan 2019 06:52:53 -0500 Received: from pandora.armlinux.org.uk ([78.32.30.218]:35502 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728227AbfAOLww (ORCPT ); Tue, 15 Jan 2019 06:52:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2014; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=UtkYBYQEV0zkIFWjLE1poFjLAMViJ0i4p6XlDuJkXsA=; b=IM1vVjUkT2Gq+IQyLcV94IGss VtFPaeJpVR2fEyZVwujSerg4Seq6FO3zEOGQGEoLPTih8ZfkI1OgcXiVThLTXH6ywv/mCCYfQbn6s 5LjPwUFbGDKpZOAL3FvnHuHzh6EKBskLbN1V26J3AqolhRE4flIFk6O1QcBr6gzftzQuQ=; Received: from e5254000004ec.dyn.armlinux.org.uk ([2002:4e20:1eda:1:5054:ff:fe00:4ec]:35742 helo=shell.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1gjNGg-0005RZ-3L; Tue, 15 Jan 2019 11:52:30 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.89) (envelope-from ) id 1gjNGf-0004ui-4x; Tue, 15 Jan 2019 11:52:29 +0000 Date: Tue, 15 Jan 2019 11:52:29 +0000 From: Russell King - ARM Linux admin 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, 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, heiko.carstens@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 Message-ID: <20190115115229.mcrmmpwdmjxf2cra@e5254000004ec.dyn.armlinux.org.uk> References: <20190110162435.309262-1-arnd@arndb.de> <20190110162435.309262-16-arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190110162435.309262-16-arnd@arndb.de> User-Agent: NeoMutt/20170113 (1.7.2) 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. I was lambasted for adding the pkey syscalls for 32-bit ARM in 2016, which will probably never support it. Why has the attitude towards this kind of thing now apparently become acceptable? > Signed-off-by: Arnd Bergmann > --- > arch/alpha/include/asm/unistd.h | 4 ---- > arch/alpha/kernel/syscalls/syscall.tbl | 4 ++++ > arch/ia64/kernel/syscalls/syscall.tbl | 4 ++++ > arch/m68k/kernel/syscalls/syscall.tbl | 4 ++++ > arch/parisc/include/asm/unistd.h | 3 --- > arch/parisc/kernel/syscalls/syscall.tbl | 4 ++++ > arch/s390/include/asm/unistd.h | 3 --- > arch/s390/kernel/syscalls/syscall.tbl | 3 +++ > arch/sh/kernel/syscalls/syscall.tbl | 4 ++++ > arch/sparc/include/asm/unistd.h | 5 ----- > arch/sparc/kernel/syscalls/syscall.tbl | 4 ++++ > arch/xtensa/kernel/syscalls/syscall.tbl | 1 + > 12 files changed, 28 insertions(+), 15 deletions(-) > > diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h > index 564ba87bdc38..31ad350b58a0 100644 > --- a/arch/alpha/include/asm/unistd.h > +++ b/arch/alpha/include/asm/unistd.h > @@ -29,9 +29,5 @@ > #define __IGNORE_getppid > #define __IGNORE_getuid > > -/* Alpha doesn't have protection keys. */ > -#define __IGNORE_pkey_mprotect > -#define __IGNORE_pkey_alloc > -#define __IGNORE_pkey_free > > #endif /* _ALPHA_UNISTD_H */ > diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl > index b0e247287908..25b4a7e76943 100644 > --- a/arch/alpha/kernel/syscalls/syscall.tbl > +++ b/arch/alpha/kernel/syscalls/syscall.tbl > @@ -452,3 +452,7 @@ > 521 common pwritev2 sys_pwritev2 > 522 common statx sys_statx > 523 common io_pgetevents sys_io_pgetevents > +524 common pkey_alloc sys_pkey_alloc > +525 common pkey_free sys_pkey_free > +526 common pkey_mprotect sys_pkey_mprotect > +527 common rseq sys_rseq > diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl > index 2e93dbdcdb80..84e03de00177 100644 > --- a/arch/ia64/kernel/syscalls/syscall.tbl > +++ b/arch/ia64/kernel/syscalls/syscall.tbl > @@ -339,3 +339,7 @@ > 327 common io_pgetevents sys_io_pgetevents > 328 common perf_event_open sys_perf_event_open > 329 common seccomp sys_seccomp > +330 common pkey_alloc sys_pkey_alloc > +331 common pkey_free sys_pkey_free > +332 common pkey_mprotect sys_pkey_mprotect > +333 common rseq sys_rseq > diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl > index 5354ba02eed2..ae88b85d068e 100644 > --- a/arch/m68k/kernel/syscalls/syscall.tbl > +++ b/arch/m68k/kernel/syscalls/syscall.tbl > @@ -388,6 +388,10 @@ > 378 common pwritev2 sys_pwritev2 > 379 common statx sys_statx > 380 common seccomp sys_seccomp > +381 common pkey_alloc sys_pkey_alloc > +382 common pkey_free sys_pkey_free > +383 common pkey_mprotect sys_pkey_mprotect > +384 common rseq sys_rseq > # room for arch specific calls > 393 common semget sys_semget > 394 common semctl sys_semctl > diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h > index c2c2afb28941..9ec1026af877 100644 > --- a/arch/parisc/include/asm/unistd.h > +++ b/arch/parisc/include/asm/unistd.h > @@ -12,9 +12,6 @@ > > #define __IGNORE_select /* newselect */ > #define __IGNORE_fadvise64 /* fadvise64_64 */ > -#define __IGNORE_pkey_mprotect > -#define __IGNORE_pkey_alloc > -#define __IGNORE_pkey_free > > #ifndef ASM_LINE_SEP > # define ASM_LINE_SEP ; > diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl > index 9bbd2f9f56c8..e07231de3597 100644 > --- a/arch/parisc/kernel/syscalls/syscall.tbl > +++ b/arch/parisc/kernel/syscalls/syscall.tbl > @@ -367,3 +367,7 @@ > 348 common pwritev2 sys_pwritev2 compat_sys_pwritev2 > 349 common statx sys_statx > 350 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents > +351 common pkey_alloc sys_pkey_alloc > +352 common pkey_free sys_pkey_free > +353 common pkey_mprotect sys_pkey_mprotect > +354 common rseq sys_rseq > 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 > # room for arch specific syscalls > 392 64 semtimedop sys_semtimedop - > 393 common semget sys_semget sys_semget > diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl > index 6d0b84e3ef2d..3f96ad0424e1 100644 > --- a/arch/sh/kernel/syscalls/syscall.tbl > +++ b/arch/sh/kernel/syscalls/syscall.tbl > @@ -391,6 +391,10 @@ > 381 common preadv2 sys_preadv2 > 382 common pwritev2 sys_pwritev2 > 383 common statx sys_statx > +384 common pkey_alloc sys_pkey_alloc > +385 common pkey_free sys_pkey_free > +386 common pkey_mprotect sys_pkey_mprotect > +387 common rseq sys_rseq > # room for arch specific syscalls > 393 common semget sys_semget > 394 common semctl sys_semctl > diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h > index 5194d86ef72d..08696ea5dca8 100644 > --- a/arch/sparc/include/asm/unistd.h > +++ b/arch/sparc/include/asm/unistd.h > @@ -59,9 +59,4 @@ > #define __IGNORE_getresgid > #endif > > -/* Sparc doesn't have protection keys. */ > -#define __IGNORE_pkey_mprotect > -#define __IGNORE_pkey_alloc > -#define __IGNORE_pkey_free > - > #endif /* _SPARC_UNISTD_H */ > diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl > index 8c9580302422..24ebef675184 100644 > --- a/arch/sparc/kernel/syscalls/syscall.tbl > +++ b/arch/sparc/kernel/syscalls/syscall.tbl > @@ -407,6 +407,10 @@ > 359 common pwritev2 sys_pwritev2 compat_sys_pwritev2 > 360 common statx sys_statx > 361 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents > +362 common pkey_alloc sys_pkey_alloc > +363 common pkey_free sys_pkey_free > +364 common pkey_mprotect sys_pkey_mprotect > +365 common rseq sys_rseq > # room for arch specific syscalls > 392 64 semtimedop sys_semtimedop > 393 common semget sys_semget > diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl > index f8befa11b0c4..c699e014e0dd 100644 > --- a/arch/xtensa/kernel/syscalls/syscall.tbl > +++ b/arch/xtensa/kernel/syscalls/syscall.tbl > @@ -372,3 +372,4 @@ > 349 common pkey_alloc sys_pkey_alloc > 350 common pkey_free sys_pkey_free > 351 common statx sys_statx > +352 common rseq sys_rseq > -- > 2.20.0 > > -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up