From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-api <linux-api@vger.kernel.org>,
linux-kernel@vger.kernel.org,
Catalin Marinas <Catalin.Marinas@arm.com>
Subject: Re: [RFC PATCH 3/9] arm64: allocate sys_membarrier system call number
Date: Thu, 3 Sep 2015 15:38:58 +0000 (UTC) [thread overview]
Message-ID: <1476370440.35879.1441294738582.JavaMail.zimbra@efficios.com> (raw)
In-Reply-To: <20150902101049.GE25720@arm.com>
----- On Sep 2, 2015, at 6:10 AM, Will Deacon will.deacon@arm.com wrote:
> On Thu, Aug 27, 2015 at 06:56:49PM +0100, Mathieu Desnoyers wrote:
>> arm64 sys_membarrier number is already wired for arm64 through
>> asm-generic/unistd.h, but needs to be allocated separately for
>> the 32-bit compability layer of arm64.
>>
>> [ Untested on this architecture. To try it out: fetch linux-next/akpm,
>> apply this patch, build/run a membarrier-enabled kernel, and do make
>> kselftest. ]
>>
>> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
>> CC: Andrew Morton <akpm@linux-foundation.org>
>> CC: linux-api@vger.kernel.org
>> CC: Catalin Marinas <catalin.marinas@arm.com>
>> CC: Will Deacon <will.deacon@arm.com>
>> ---
>> arch/arm64/include/asm/unistd32.h | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/arch/arm64/include/asm/unistd32.h
>> b/arch/arm64/include/asm/unistd32.h
>> index cef934a..d97be80 100644
>> --- a/arch/arm64/include/asm/unistd32.h
>> +++ b/arch/arm64/include/asm/unistd32.h
>> @@ -797,3 +797,5 @@ __SYSCALL(__NR_memfd_create, sys_memfd_create)
>> __SYSCALL(__NR_bpf, sys_bpf)
>> #define __NR_execveat 387
>> __SYSCALL(__NR_execveat, compat_sys_execveat)
>> +#define __NR_membarrier 388
>> +__SYSCALL(__NR_membarrier, sys_membarrier)
>
> I think people have made similar comments for other architectures, but
> please also updated __NR_compat_syscalls when adding new compat syscalls
> here.
Thanks for pointing it out! I'm fixing it for the next
RFC round.
Mathieu
>
> Will
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
next prev parent reply other threads:[~2015-09-03 15:39 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-27 17:56 [RFC PATCH 0/9] allocate sys_membarrier system call number on major archs Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 1/9] powerpc: allocate sys_membarrier system call number Mathieu Desnoyers
2015-08-31 6:54 ` Michael Ellerman
2015-08-31 15:32 ` Mathieu Desnoyers
2015-09-01 1:00 ` Michael Ellerman
2015-08-27 17:56 ` [RFC PATCH 2/9] arm: " Mathieu Desnoyers
2015-08-27 22:51 ` Russell King - ARM Linux
2015-08-27 23:16 ` Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 3/9] arm64: " Mathieu Desnoyers
2015-09-02 10:10 ` Will Deacon
2015-09-03 15:38 ` Mathieu Desnoyers [this message]
2015-08-27 17:56 ` [RFC PATCH 4/9] mips: " Mathieu Desnoyers
2015-08-28 7:40 ` Ralf Baechle
2015-08-28 14:06 ` Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 5/9] s390/s390x: " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 6/9] sparc/sparc64: " Mathieu Desnoyers
2015-08-27 23:16 ` David Miller
2015-08-27 17:56 ` [RFC PATCH 7/9] alpha: " Mathieu Desnoyers
2015-08-27 18:34 ` Matt Turner
2015-08-27 19:06 ` Mathieu Desnoyers
2015-08-27 19:07 ` [RFC PATCH v2] " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 8/9] ia64: " Mathieu Desnoyers
2015-08-27 17:56 ` [RFC PATCH 9/9] parisc: " Mathieu Desnoyers
2015-09-03 12:26 ` Helge Deller
2015-09-03 15:41 ` Mathieu Desnoyers
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