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

[Russell King - ARM Linux]

On Thu, Sep 17, 2015 at 01:37:53PM +0000, Mathieu Desnoyers wrote:
> ----- On Sep 17, 2015, at 9:13 AM, Russell King - ARM Linux linux@xxxxxxxxxxxxxxxx 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@xxxxxxxxxxxx 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@xxxxxxxxxxxx>
> >> 
> >> 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!

I'll also merge my patch after -rc2's out, so expect it to appear in
linux-next next week.

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