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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 B10FDC47083 for ; Tue, 1 Jun 2021 02:56:30 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 31BBF6135C for ; Tue, 1 Jun 2021 02:56:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 31BBF6135C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 796156B006C; Mon, 31 May 2021 22:56:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 745FD6B006E; Mon, 31 May 2021 22:56:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5E6798D0002; Mon, 31 May 2021 22:56:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0087.hostedemail.com [216.40.44.87]) by kanga.kvack.org (Postfix) with ESMTP id 2DDC36B006C for ; Mon, 31 May 2021 22:56:29 -0400 (EDT) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id BD4C0180AD804 for ; Tue, 1 Jun 2021 02:56:28 +0000 (UTC) X-FDA: 78203641656.10.DD4A82E Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by imf28.hostedemail.com (Postfix) with ESMTP id B1B80200109C for ; Tue, 1 Jun 2021 02:56:16 +0000 (UTC) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4FvGy61k79z9sWF; Tue, 1 Jun 2021 12:56:13 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ellerman.id.au; s=201909; t=1622516184; bh=iY7MeF5kJVTgb76PGSIe64N6mVxLFvLQ+P911N0MgIM=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=mgyJJS7Mpwj0xHxjTQUJCbxWXBqEpx7u6kJmlJrory1kepRlcJMq86u8b7CRC0TBx 2eKAPApa1yyT+8Bx3Nq7xXqq+U0aoxEZ+zVk8LZNufbS19MjY54JklUeikWPo3saVu rZYPlntAMlPhhFnF6Z4PsS/40mD9BayKN5dAP0deDvSFY91SZJGkqyvQLfTKpVKAj7 nHaMrjkuyFLjQPzypNJGHxewO6DV/mxxi6HJjuKa/Hbn4YkWBejjdidjhax1ODsJHB 2xtaQQzhaLoYsK439xsAx0/uvUVbRJkkNCZEwtolQgis+ZjvEfMSx7TFq4rv4vlYtC mKEDQ5CYN2DQw== From: Michael Ellerman To: Kefeng Wang , Andrew Morton Cc: 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, Kefeng Wang , Catalin Marinas , Will Deacon , Geert Uytterhoeven , Thomas Bogendoerfer , "David S. Miller" , Ingo Molnar , Borislav Petkov , Palmer Dabbelt , Richard Henderson , Russell King , Mike Rapoport Subject: Re: [PATCH v2] mm: generalize ZONE_[DMA|DMA32] In-Reply-To: <20210528074557.17768-1-wangkefeng.wang@huawei.com> References: <20210527143047.123611-1-wangkefeng.wang@huawei.com> <20210528074557.17768-1-wangkefeng.wang@huawei.com> Date: Tue, 01 Jun 2021 12:56:10 +1000 Message-ID: <87k0negunp.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Queue-Id: B1B80200109C Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=ellerman.id.au header.s=201909 header.b=mgyJJS7M; spf=pass (imf28.hostedemail.com: domain of mpe@ellerman.id.au designates 203.11.71.1 as permitted sender) smtp.mailfrom=mpe@ellerman.id.au; dmarc=none X-Rspamd-Server: rspam04 X-Stat-Signature: jnm9uyanw1x3i9iua4nkcdr3y4eurhoj X-HE-Tag: 1622516176-791002 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: Kefeng Wang writes: > 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 > Acked-by: Catalin Marinas # for arm64 > Acked-by: Geert Uytterhoeven # for m68k > Acked-by: Mike Rapoport > Signed-off-by: Kefeng Wang > --- > v2: > -i386 can't enable ZONE_DMA32, fix it. > -make ZONE_DMA default y on X86 as before. > -collect ACKs > > arch/alpha/Kconfig | 5 +---- > arch/arm/Kconfig | 3 --- > arch/arm64/Kconfig | 9 +-------- > arch/ia64/Kconfig | 4 +--- > arch/m68k/Kconfig | 5 +---- > arch/microblaze/Kconfig | 4 +--- > arch/mips/Kconfig | 7 ------- > arch/powerpc/Kconfig | 4 ---- > arch/powerpc/platforms/Kconfig.cputype | 1 + Acked-by: Michael Ellerman (powerpc) cheers