linux-kernel - Re: [RFC PATCH v2 6/9] arm: allocate sys

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Message-ID: <20150917131316.GO21084@n2100.arm.linux.org.uk>
Date:	Thu, 17 Sep 2015 14:13:16 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-api <linux-api@...r.kernel.org>,
	Michael Jeanson <mjeanson@...icios.com>
Subject: Re: [RFC PATCH v2 6/9] arm: allocate sys_membarrier system call
 number

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@...icios.com 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@...icios.com>
> 
> 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.

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