Re: [RFC PATCH v2 6/9] arm: allocate sys_membarrier system call number

[Mathieu Desnoyers <mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org>]

----- On Sep 17, 2015, at 9:13 AM, Russell King - ARM Linux linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org wrote:

> On Wed, Sep 16, 2015 at 06:27:10PM +0000, Mathieu Desnoyers wrote:
>> ----- On Sep 7, 2015, at 12:15 PM, Mathieu Desnoyers
>> mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org wrote:
>> 
>> > [ 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. ]
>> 
>> Hi,
>> 
>> We tested the system call on our ARM board (Wandboard, SoC
>> Freescale i.MX6 Quad) by applying this patch on top of
>> Linux 4.3-rc1. Both the membarrier kselftest and
>> Userspace RCU regression tests (the latter manually wired up
>> on sys_membarrier) work fine.
>> 
>> Tested-by: Mathieu Desnoyers <mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org>
>> 
>> sys_membarrier has been pulled into Linux 4.3-rc1. Please
>> feel free to wire it up on ARM.
> 
> Well, it's not going to end up with 388, but 389, because we also have
> userfaultfd added in the same merge window, and I follow the x86
> syscall ordering when adding to ARM.

That's fine with me!

Thanks,

Mathieu

> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com