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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 B4470C433DB for ; Wed, 30 Dec 2020 10:18:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 754FC2247F for ; Wed, 30 Dec 2020 10:18:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726547AbgL3KR5 (ORCPT ); Wed, 30 Dec 2020 05:17:57 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:9660 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726203AbgL3KRz (ORCPT ); Wed, 30 Dec 2020 05:17:55 -0500 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4D5Ryb5Mp3z15YX4; Wed, 30 Dec 2020 18:16:23 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.498.0; Wed, 30 Dec 2020 18:17:03 +0800 From: Chen Zhou To: , CC: , , , , , , , , Subject: [PATCH v2 0/3] arm64: mm: reserve CMA and crashkernel in ZONE_DMA if enabled Date: Wed, 30 Dec 2020 18:23:19 +0800 Message-ID: <20201230102322.176313-1-chenzhou10@huawei.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, CMA and crashkernel are reserved in ZONE_DMA32, which is OK for majority of devices. But the ones that need them in ZONE_DMA need to configure it explicitly. Since patchset "arm64: Default to 32-bit wide ZONE_DMA", ZONE_DMA's size is fine-tuned. So we could directly reserve CMA and crashkernel in ZONE_DMA if CONFIG_ZONE_DMA is enabled, otherwise, reserving in ZONE_DMA32. Patch 1 updates the comments about the ZONE_DMA. Patch 2 move dma_contiguous_reserve() to bootmem_init() Patch 3 reserve CMA and crashkernel in ZONE_DMA if enabled Changes since v1: - Add Reviewed-by for patch 1 from Nicolas. - Suggested by Nicolas, also reserve CMA in ZONE_DMA if enabled. Chen Zhou (3): arm64: mm: update the comments about ZONE_DMA arm64: mm: move dma_contiguous_reserve() to bootmem_init() arm64: mm: reserve CMA and crashkernel in ZONE_DMA if enabled arch/arm64/mm/init.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) -- 2.20.1