Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751282AbdH1RMZ (ORCPT ); Mon, 28 Aug 2017 13:12:25 -0400 Received: from mail-yw0-f174.google.com ([209.85.161.174]:34297 "EHLO mail-yw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbdH1RMX (ORCPT ); Mon, 28 Aug 2017 13:12:23 -0400 MIME-Version: 1.0 In-Reply-To: <20170827213659.29210-1-mathieu.desnoyers@efficios.com> References: <20170827213659.29210-1-mathieu.desnoyers@efficios.com> From: Max Filippov Date: Mon, 28 Aug 2017 20:12:22 +0300 Message-ID: Subject: Re: [PATCH] Fix: xtensa: add missing sync_core To: Mathieu Desnoyers Cc: "Paul E . McKenney" , LKML , Peter Zijlstra , Chris Zankel , "linux-xtensa@linux-xtensa.org" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 512 Lines: 16 Hi Mathieu, On Mon, Aug 28, 2017 at 12:36 AM, Mathieu Desnoyers wrote: > The membarrier system call now requires all architectures to implement > sync_core(). On Xtensa, it is provided by the EXTW instruction. > > [ Completely untested! Can someone on the xtensa side confirm whether > EXTW is the right way to serialize core execution and try it out ? ] Thanks for the patch. I'm currently travelling, I'll give it a try next week once I'm back at work. -- Thanks. -- Max