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 X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9180C47089 for ; Thu, 27 May 2021 17:43:29 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 525646052B for ; Thu, 27 May 2021 17:43:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 525646052B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BC7566B006C; Thu, 27 May 2021 13:43:28 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B773D6B006E; Thu, 27 May 2021 13:43:28 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A18266B0070; Thu, 27 May 2021 13:43:28 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0192.hostedemail.com [216.40.44.192]) by kanga.kvack.org (Postfix) with ESMTP id 6B50B6B006C for ; Thu, 27 May 2021 13:43:28 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 0BE79AF85 for ; Thu, 27 May 2021 17:43:28 +0000 (UTC) X-FDA: 78187732896.11.84CE646 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf24.hostedemail.com (Postfix) with ESMTP id D869FA0001E2 for ; Thu, 27 May 2021 17:43:19 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id B02F6610A0; Thu, 27 May 2021 17:43:23 +0000 (UTC) Date: Thu, 27 May 2021 18:43:21 +0100 From: Catalin Marinas To: Kefeng Wang Cc: Andrew Morton , linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, Will Deacon , Geert Uytterhoeven , Thomas Bogendoerfer , "David S. Miller" , Ingo Molnar , Borislav Petkov , Palmer Dabbelt , Richard Henderson , Russell King Subject: Re: [PATCH] mm: generalize ZONE_[DMA|DMA32] Message-ID: <20210527174321.GI8661@arm.com> References: <20210527143047.123611-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210527143047.123611-1-wangkefeng.wang@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) Authentication-Results: imf24.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none); spf=pass (imf24.hostedemail.com: domain of cmarinas@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=cmarinas@kernel.org X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: D869FA0001E2 X-Stat-Signature: tr81pwabh1zmu1zgz5zuceuftdsh95dc X-HE-Tag: 1622137399-95922 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, May 27, 2021 at 10:30:47PM +0800, Kefeng Wang wrote: > ZONE_[DMA|DMA32] configs have duplicate definitions on platforms > that subscribe them. Instead, just make them generic options which > can be selected on applicable platforms. > > Also only x86/arm64 architectures could enable both ZONE_DMA and > ZONE_DMA32 if EXPERT, add ARCH_HAS_ZONE_DMA_SET to make dma zone > configurable and visible on the two architectures. > > Cc: Andrew Morton > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Geert Uytterhoeven > Cc: Thomas Bogendoerfer > Cc: "David S. Miller" > Cc: Ingo Molnar > Cc: Borislav Petkov > Cc: Palmer Dabbelt > Cc: Richard Henderson > Cc: Russell King > Signed-off-by: Kefeng Wang For arm64: Acked-by: Catalin Marinas