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=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,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 287FFC43387 for ; Sat, 22 Dec 2018 10:33:08 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CBA42219FE for ; Sat, 22 Dec 2018 10:33:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBA42219FE 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=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43MMJx5hlxzDqbt for ; Sat, 22 Dec 2018 21:33:05 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43MLSm5Zv0zDqWq for ; Sat, 22 Dec 2018 20:54:48 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 43MLSm3jd2z9sPK; Sat, 22 Dec 2018 20:54:48 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: 25078dc1f74be16b858e914f52cc8f4d03c2271a X-Patchwork-Hint: ignore In-Reply-To: <20181216165349.24281-1-hch@lst.de> To: Christoph Hellwig , Benjamin Herrenschmidt , Paul Mackerras From: Michael Ellerman Subject: Re: powerpc: use mm zones more sensibly Message-Id: <43MLSm3jd2z9sPK@ozlabs.org> Date: Sat, 22 Dec 2018 20:54:48 +1100 (AEDT) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Sun, 2018-12-16 at 16:53:49 UTC, Christoph Hellwig wrote: > Powerpc has somewhat odd usage where ZONE_DMA is used for all memory on > common 64-bit configfs, and ZONE_DMA32 is used for 31-bit schemes. > > Move to a scheme closer to what other architectures use (and I dare to > say the intent of the system): > > - ZONE_DMA: optionally for memory < 31-bit (64-bit embedded only) > - ZONE_NORMAL: everything addressable by the kernel > - ZONE_HIGHMEM: memory > 32-bit for 32-bit kernels > > Also provide information on how ZONE_DMA is used by defining > ARCH_ZONE_DMA_BITS. > > Contains various fixes from Benjamin Herrenschmidt. > > Signed-off-by: Christoph Hellwig Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/25078dc1f74be16b858e914f52cc8f cheers