From patchwork Sun Sep 11 04:44:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 12972761 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 42C7DC54EE9 for ; Sun, 11 Sep 2022 04:41:20 +0000 (UTC) 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:References:In-Reply-To: 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: List-Owner; bh=VhiRL/ksC4eH/Hv20lNRlTagUbCu7IWTa+K0Pcyc/0I=; b=CH80qjVuTaSbPL AcNIdId45wToVDU9MHt81hH7R/rlaGEE9yA+611bz4DYsBillAhbtn11U9UeOmMzSNL6+JL7zUrT0 YB45k5PJtTCTPkWjeMS2QT7uaNDzYiVLFQnLiE2a6qlReX+z1NQPPafOm0iSfk+SMzoP86XnDUKH+ pMqvOVj9feh8H8s1kFY1ElSBvAcrPX8fOHMO8jQ1tjlCaIlpbBswO34Htsg7RhX+kc850mOryhp6w gNHQ23dZVK9c5u8c8//iXLSWH+arBNzPIU7cWwMiTpeEoYXJ81XrxQJ8PRRNDWR6xWreFcygTGCRG v43ncoqcueY61KS8p1iw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oXElb-00FwUD-9M; Sun, 11 Sep 2022 04:40:23 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oXElY-00FwSR-2H for linux-arm-kernel@lists.infradead.org; Sun, 11 Sep 2022 04:40:21 +0000 Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MQH5X423XznV1S; Sun, 11 Sep 2022 12:37:36 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sun, 11 Sep 2022 12:40:14 +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 15.1.2375.24; Sun, 11 Sep 2022 12:40:14 +0800 From: Kefeng Wang To: Catalin Marinas , Will Deacon CC: , , Jonathan Corbet , Kefeng Wang Subject: [PATCH Resend] arm64: support huge vmalloc mappings Date: Sun, 11 Sep 2022 12:44:23 +0800 Message-ID: <20220911044423.139229-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: 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-20220910_214020_300580_8C9CA632 X-CRM114-Status: GOOD ( 11.25 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As commit 559089e0a93d ("vmalloc: replace VM_NO_HUGE_VMAP with VM_ALLOW_HUGE_VMAP"), the use of hugepage mappings for vmalloc is an opt-in strategy, so it is saftly to support huge vmalloc mappings on arm64, for now, it is used in kvmalloc() and alloc_large_system_hash(). Signed-off-by: Kefeng Wang --- Resend: correct commit id Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/arm64/Kconfig | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 01c996f0cdaf..2f58c764b094 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3617,7 +3617,7 @@ nohugeiomap [KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings. - nohugevmalloc [PPC] Disable kernel huge vmalloc mappings. + nohugevmalloc [KNL,X86,PPC,ARM64] Disable kernel huge vmalloc mappings. nosmt [KNL,S390] Disable symmetric multithreading (SMT). Equivalent to smt=1. diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a62a8a23c6e5..679d9a9c98d8 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -149,6 +149,7 @@ config ARM64 select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_BITREVERSE select HAVE_ARCH_COMPILER_H + select HAVE_ARCH_HUGE_VMALLOC select HAVE_ARCH_HUGE_VMAP select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE