Re: [RFC PATCH v2 7/9] arm64: allocate sys_membarrier system call number
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: 2015-09-16 16:38:17
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----- On Sep 16, 2015, at 12:35 PM, Will Deacon will.deacon@arm.com wrote:
Hi Mathieu, On Wed, Sep 16, 2015 at 04:18:39PM +0100, Mathieu Desnoyers wrote:quoted
----- On Sep 7, 2015, at 12:15 PM, Mathieu Desnoyers mathieu.desnoyers@efficios.com wrote:quoted
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. ]sys_membarrier has been merged into Linux 4.3-rc1. sys_membarrier can therefore be tested on top of Linus' master.Just to say that I'm happy to merge this once arch/arm/ also has the syscall wired up. It'd be a bit weird to have the support in the arm64 compat layer but not the arch/arm/ native kernel!
Sounds good! We're currently testing sys_membarrier on a wandboard. We'll provide feedback by replying to the ARM patch thread soon. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com