From patchwork Sun Dec 26 08:39:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 12699309 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80C85C43217 for ; Sun, 26 Dec 2021 08:29:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E97876B007B; Sun, 26 Dec 2021 03:29:54 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E46016B007D; Sun, 26 Dec 2021 03:29:54 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D346D6B007E; Sun, 26 Dec 2021 03:29:54 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0095.hostedemail.com [216.40.44.95]) by kanga.kvack.org (Postfix) with ESMTP id C45146B007B for ; Sun, 26 Dec 2021 03:29:54 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 86C7D86984 for ; Sun, 26 Dec 2021 08:29:54 +0000 (UTC) X-FDA: 78959272308.22.130F638 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by imf16.hostedemail.com (Postfix) with ESMTP id D1C3618002B for ; Sun, 26 Dec 2021 08:29:53 +0000 (UTC) Received: from dggpemm500024.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4JMDRK0VR6z1DK7y; Sun, 26 Dec 2021 16:26:37 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500024.china.huawei.com (7.185.36.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Sun, 26 Dec 2021 16:29:50 +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 15.1.2308.20; Sun, 26 Dec 2021 16:29:50 +0800 From: Kefeng Wang To: Jonathan Corbet , Andrew Morton , , , , , , CC: Nicholas Piggin , Catalin Marinas , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Michael Ellerman , "Benjamin Herrenschmidt" , Paul Mackerras , Kefeng Wang Subject: [PATCH 3/3] x86: Support huge vmalloc mappings Date: Sun, 26 Dec 2021 16:39:12 +0800 Message-ID: <20211226083912.166512-4-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20211226083912.166512-1-wangkefeng.wang@huawei.com> References: <20211226083912.166512-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-Stat-Signature: cncrdui1du1c5dcj7y1sbber4xanwez5 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: D1C3618002B Authentication-Results: imf16.hostedemail.com; dkim=none; spf=pass (imf16.hostedemail.com: domain of wangkefeng.wang@huawei.com designates 45.249.212.255 as permitted sender) smtp.mailfrom=wangkefeng.wang@huawei.com; dmarc=pass (policy=quarantine) header.from=huawei.com X-HE-Tag: 1640507393-232161 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: This patch select HAVE_ARCH_HUGE_VMALLOC to let X86_64 and X86_PAE support huge vmalloc mappings, it is disabled by default, use hugevmalloc=on to enable it. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Signed-off-by: Kefeng Wang --- Documentation/admin-guide/kernel-parameters.txt | 4 ++-- arch/x86/Kconfig | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 235a23b08809..5c8780e66be2 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1630,7 +1630,7 @@ precedence over memory_hotplug.memmap_on_memory. - hugevmalloc= [KNL,PPC,ARM64] Reguires CONFIG_HAVE_ARCH_HUGE_VMALLOC + hugevmalloc= [KNL,PPC,ARM64,X86] Reguires CONFIG_HAVE_ARCH_HUGE_VMALLOC Format: { on | off } Default set by CONFIG_HUGE_VMALLOC_DEFAULT_ENABLED. @@ -3415,7 +3415,7 @@ nohugeiomap [KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings. - nohugevmalloc [KNL,PPC,ARM64] Disable kernel huge vmalloc mappings. + nohugevmalloc [KNL,PPC,ARM64,X86] Disable kernel huge vmalloc mappings. nosmt [KNL,S390] Disable symmetric multithreading (SMT). Equivalent to smt=1. diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5c2ccb85f2ef..31e465fecd01 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -157,6 +157,7 @@ config X86 select HAVE_ACPI_APEI_NMI if ACPI select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL + select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE