From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5CCCC433EF for ; Sun, 19 Jun 2022 09:45:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230439AbiFSJpe (ORCPT ); Sun, 19 Jun 2022 05:45:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229816AbiFSJpc (ORCPT ); Sun, 19 Jun 2022 05:45:32 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E80F3A453; Sun, 19 Jun 2022 02:45:30 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 9EC64B80CFE; Sun, 19 Jun 2022 09:45:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A049C34114; Sun, 19 Jun 2022 09:45:25 +0000 (UTC) Date: Sun, 19 Jun 2022 10:45:22 +0100 From: Catalin Marinas To: Marco Elver Cc: paulmck@kernel.org, Kefeng Wang , will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, Jonathan Corbet , linux-doc@vger.kernel.org, arnd@arndb.de, Peter Zijlstra Subject: Re: [PATCH v4 1/2] asm-generic: Add memory barrier dma_mb() Message-ID: References: <20220523113126.171714-1-wangkefeng.wang@huawei.com> <20220523113126.171714-2-wangkefeng.wang@huawei.com> <20220616231350.GA1790663@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Fri, Jun 17, 2022 at 12:18:41PM +0200, Marco Elver wrote: > On Fri, 17 Jun 2022 at 01:13, Paul E. McKenney wrote: > > On Mon, May 23, 2022 at 01:35:27PM +0200, Marco Elver wrote: > > > On Mon, 23 May 2022 at 13:21, Kefeng Wang wrote: > > > > > > > > The memory barrier dma_mb() is introduced by commit a76a37777f2c > > > > ("iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer"), > > > > which is used to ensure that prior (both reads and writes) accesses > > > > to memory by a CPU are ordered w.r.t. a subsequent MMIO write. > > > > > > > > Reviewed-by: Arnd Bergmann # for asm-generic > > > > Signed-off-by: Kefeng Wang > > > > > > Reviewed-by: Marco Elver > > > > Just checking... Did these ever get picked up? It was suggested > > that they go up via the arm64 tree, if I remember correctly. > > I don't see them in -next, and as far as I can tell, they're not in > the arm64 tree. Since v4 was posted during the merging window, it hasn't been queued for 5.19-rc1. I normally only merge patches with a Fixes tag during the -rc period (though there are some exceptions). Mark commented in v1 that such tag isn't necessary, so I thought I'd leave it for the 5.20 merging window. That said, the diffstat is small, so if it helps having this in 5.19, I can queue it for -rc4. -- Catalin