From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753809AbcDFE7z (ORCPT ); Wed, 6 Apr 2016 00:59:55 -0400 Received: from avon.wwwdotorg.org ([70.85.31.133]:48516 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751038AbcDFE7y (ORCPT ); Wed, 6 Apr 2016 00:59:54 -0400 Subject: Re: [PATCH 4/4] irqchip: bcm2836: Use a more generic memory barrier call To: Eric Anholt References: <1459827858-3871-1-git-send-email-eric@anholt.net> <1459827858-3871-5-git-send-email-eric@anholt.net> Cc: linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Lee Jones , Thomas Gleixner , Jason Cooper , Marc Zyngier From: Stephen Warren Message-ID: <570497C7.10501@wwwdotorg.org> Date: Tue, 5 Apr 2016 22:59:51 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <1459827858-3871-5-git-send-email-eric@anholt.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/04/2016 09:44 PM, Eric Anholt wrote: > dsb() requires an argument on arm64, so we needed to add "sy". > Instead, take this opportunity to switch to the same smp_wmb() call > that gic uses for its IPIs. This is a less strong barrier than we > were doing before (dmb(ishst) compared to dsb(sy)), but it seems to be > the correct one. I assume all MMIO is part of the ish domain? If so, the series, Acked-by: Stephen Warren