From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
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
Date: Thu, 10 Jan 2019 21:36:38 +0100 [thread overview]
Message-ID: <20190110203638.GB3676@osiris> (raw)
In-Reply-To: <20190110162435.309262-16-arnd@arndb.de>
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 <arnd@arndb.de>
> 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 <asm/unistd_nr.h>
>
> #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.
next prev parent reply other threads:[~2019-01-10 20:37 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 16:24 [PATCH 00/15] arch: synchronize syscall tables in preparation for y2038 Arnd Bergmann
2019-01-10 16:24 ` [PATCH 01/15] ia64: add __NR_umount2 definition Arnd Bergmann
2019-01-10 16:24 ` [PATCH 02/15] ia64: add statx and io_pgetevents syscalls Arnd Bergmann
2019-01-10 16:24 ` [PATCH 03/15] ia64: assign syscall numbers for perf and seccomp Arnd Bergmann
2019-01-10 16:24 ` [PATCH 04/15] alpha: wire up io_pgetevents system call Arnd Bergmann
2019-01-10 16:24 ` [PATCH 05/15] alpha: update syscall macro definitions Arnd Bergmann
2019-01-10 16:24 ` [PATCH 06/15] ARM: add migrate_pages() system call Arnd Bergmann
2019-01-10 16:32 ` Will Deacon
2019-01-10 17:11 ` Arnd Bergmann
2019-01-10 16:24 ` [PATCH 07/15] ARM: add kexec_file_load system call number Arnd Bergmann
2019-01-10 16:39 ` Will Deacon
2019-01-10 17:14 ` Arnd Bergmann
2019-01-10 16:24 ` [PATCH 08/15] m68k: assign syscall number for seccomp Arnd Bergmann
2019-01-10 16:24 ` [PATCH 09/15] sh: remove duplicate unistd_32.h file Arnd Bergmann
2019-01-10 16:24 ` [PATCH 10/15] sh: add statx system call Arnd Bergmann
2019-01-10 16:24 ` [PATCH 11/15] mips: fix n32 compat_ipc_parse_version Arnd Bergmann
2019-01-10 16:24 ` [PATCH 12/15] sparc64: fix sparc_ipc type conversion Arnd Bergmann
2019-01-10 16:24 ` [PATCH 13/15] ipc: rename old-style shmctl/semctl/msgctl syscalls Arnd Bergmann
2019-01-10 16:24 ` [PATCH 14/15] arch: add split IPC system calls where needed Arnd Bergmann
2019-01-10 20:32 ` Heiko Carstens
2019-01-11 17:33 ` Arnd Bergmann
2019-01-14 3:40 ` Michael Ellerman
2019-01-14 3:59 ` Michael Ellerman
2019-01-14 9:58 ` Michael Ellerman
2019-01-15 15:01 ` Arnd Bergmann
2019-01-15 15:18 ` Arnd Bergmann
2019-01-15 16:35 ` Geert Uytterhoeven
2019-01-15 21:24 ` Arnd Bergmann
2019-01-16 0:09 ` Michael Ellerman
2019-01-16 0:10 ` Michael Ellerman
2019-01-10 16:24 ` [PATCH 15/15] arch: add pkey and rseq syscall numbers everywhere Arnd Bergmann
2019-01-10 20:36 ` Heiko Carstens [this message]
2019-01-11 17:30 ` Arnd Bergmann
2019-01-14 8:31 ` Heiko Carstens
2019-01-15 11:52 ` Russell King - ARM Linux admin
2019-01-15 14:47 ` Arnd Bergmann
2019-01-10 16:59 ` [PATCH 00/15] arch: synchronize syscall tables in preparation for y2038 Geert Uytterhoeven
2019-01-10 17:06 ` Arnd Bergmann
2019-01-10 18:11 ` Geert Uytterhoeven
2019-01-10 22:43 ` Arnd Bergmann
2019-01-11 8:07 ` Geert Uytterhoeven
2019-01-10 18:10 ` Joseph Myers
2019-01-10 22:42 ` Arnd Bergmann
2019-01-10 23:14 ` Michael Cree
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190110203638.GB3676@osiris \
--to=heiko.carstens@de.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=dalias@libc.org \
--cc=dave@stgolabs.net \
--cc=davem@davemloft.net \
--cc=deepa.kernel@gmail.com \
--cc=deller@gmx.de \
--cc=ebiederm@xmission.com \
--cc=fenghua.yu@intel.com \
--cc=firoz.khan@linaro.org \
--cc=geert@linux-m68k.org \
--cc=hpa@zytor.com \
--cc=ink@jurassic.park.msu.ru \
--cc=jcmvbkbc@gmail.com \
--cc=linux-alpha@vger.kernel.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-m68k@lists.linux-m68k.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux-sh@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=linux@dominikbrodowski.net \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=luto@kernel.org \
--cc=mattst88@gmail.com \
--cc=mingo@redhat.com \
--cc=monstr@monstr.eu \
--cc=mpe@ellerman.id.au \
--cc=paul.burton@mips.com \
--cc=schwidefsky@de.ibm.com \
--cc=sparclinux@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=tony.luck@intel.com \
--cc=will.deacon@arm.com \
--cc=x86@kernel.org \
--cc=y2038@lists.linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).