From patchwork Fri Jul 30 12:48:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 12411199 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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 1F9DAC4338F for ; Fri, 30 Jul 2021 12:44:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E0A5A60E97 for ; Fri, 30 Jul 2021 12:44:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E0A5A60E97 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=C4nn/18UbH/GCp9bx4x9oQL4RBTQq7J2MJdA3dQnvC4=; b=K9iBebaHFIyOQ/ zJnw3BuGFKqiKiVP0+qGr6a3P5Hd9vBh3LSJA9BOJabhrgvhJxUHixAkARUdFpc3huZKmbaNjUyGC s0vtl0J9xjwuNZJdZXeosPlSfH4R/trsqg+JarkhkfDIo/gfD9zN+JWIUAylKEUfIFmZygdoHayPi WuxrkkxDAvfp61ZPmZMjale+AfmXQ4PPkEjGqhfmgOmOxZINeyO1Si1bHGzcrzO793KrxqevEp8fX 3I5sOWDdyL4LgI1l2IErquh3fwq2DgIujfN+egmmsK/s3K1TS0LFgQe44lv8XsaGf3Ch6sguAHvgB 6Ui6UF0ES/8tXqvJTW0Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m9Rre-008dD9-M1; Fri, 30 Jul 2021 12:43:46 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m9Rrb-008dBj-4a for linux-riscv@lists.infradead.org; Fri, 30 Jul 2021 12:43:44 +0000 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Gbn6J1S39z7x0m; Fri, 30 Jul 2021 20:39:52 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Fri, 30 Jul 2021 20:43:39 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Fri, 30 Jul 2021 20:43:38 +0800 From: Kefeng Wang To: Palmer Dabbelt , CC: , , , Kefeng Wang , "Alexandre Ghiti" Subject: [PATCH v3] riscv: Add support to allocate gigantic hugepages using CMA Date: Fri, 30 Jul 2021 20:48:41 +0800 Message-ID: <20210730124841.178455-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210730_054343_388863_7B2FDF01 X-CRM114-Status: UNSURE ( 8.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit kernel") adds support gigantic hugepage support for RV64. This patch adds support to allocate gigantic hugepages using CMA by specifying the hugetlb_cma= kernel parameter on RV64. Cc: Alexandre Ghiti Reviewed-by: Alexandre Ghiti Signed-off-by: Kefeng Wang --- v3: Update changelog and add Reviewed-by. arch/riscv/mm/init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index a14bf3910eec..e547e53cddd2 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -216,6 +217,8 @@ static void __init setup_bootmem(void) early_init_fdt_scan_reserved_mem(); dma_contiguous_reserve(dma32_phys_limit); + if (IS_ENABLED(CONFIG_64BIT)) + hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT); memblock_allow_resize(); }