From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753310AbbIPQiR (ORCPT ); Wed, 16 Sep 2015 12:38:17 -0400 Received: from mail.efficios.com ([78.47.125.74]:49220 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751965AbbIPQiO (ORCPT ); Wed, 16 Sep 2015 12:38:14 -0400 Date: Wed, 16 Sep 2015 16:38:04 +0000 (UTC) From: Mathieu Desnoyers To: Will Deacon Cc: Catalin Marinas , linux-kernel@vger.kernel.org, Andrew Morton , linux-api Message-ID: <2075941251.9404.1442421484155.JavaMail.zimbra@efficios.com> In-Reply-To: <20150916163527.GO28771@arm.com> References: <1441642556-30972-1-git-send-email-mathieu.desnoyers@efficios.com> <1441642556-30972-8-git-send-email-mathieu.desnoyers@efficios.com> <4692929.9334.1442416719904.JavaMail.zimbra@efficios.com> <20150916163527.GO28771@arm.com> Subject: Re: [RFC PATCH v2 7/9] arm64: allocate sys_membarrier system call number MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [78.47.125.74] X-Mailer: Zimbra 8.6.0_GA_1178 (ZimbraWebClient - FF40 (Linux)/8.6.0_GA_1178) Thread-Topic: arm64: allocate sys_membarrier system call number Thread-Index: a/bmb6V1hFmK9CMSEjMk5kBNLzQIww== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ----- 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: >> ----- On Sep 7, 2015, at 12:15 PM, Mathieu Desnoyers >> mathieu.desnoyers@efficios.com 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. ] >> >> 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