From patchwork Fri Jan 21 19:49:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Liu X-Patchwork-Id: 12720183 X-Patchwork-Delegate: bpf@iogearbox.net 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05E59C433FE for ; Fri, 21 Jan 2022 19:49:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232768AbiAUTts convert rfc822-to-8bit (ORCPT ); Fri, 21 Jan 2022 14:49:48 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:12930 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232249AbiAUTto (ORCPT ); Fri, 21 Jan 2022 14:49:44 -0500 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 20LGSdCE019512 for ; Fri, 21 Jan 2022 11:49:44 -0800 Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3dqhyvwghn-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 21 Jan 2022 11:49:44 -0800 Received: from twshared18912.14.frc2.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c085:21d::4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Fri, 21 Jan 2022 11:49:39 -0800 Received: by devbig006.ftw2.facebook.com (Postfix, from userid 4523) id 437FD284A5F10; Fri, 21 Jan 2022 11:49:32 -0800 (PST) From: Song Liu To: , , CC: , , , , , , Song Liu Subject: [PATCH v6 bpf-next 1/7] x86/Kconfig: select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP Date: Fri, 21 Jan 2022 11:49:20 -0800 Message-ID: <20220121194926.1970172-2-song@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220121194926.1970172-1-song@kernel.org> References: <20220121194926.1970172-1-song@kernel.org> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-ORIG-GUID: wxKkM3yxSck7Jz-x_d87J2TotxbZ93q7 X-Proofpoint-GUID: wxKkM3yxSck7Jz-x_d87J2TotxbZ93q7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-21_09,2022-01-21_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=fb_outbound_notspam policy=fb_outbound score=0 bulkscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 spamscore=0 impostorscore=0 clxscore=1015 mlxscore=0 malwarescore=0 mlxlogscore=914 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2201210128 X-FB-Internal: deliver Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net From: Song Liu This enables module_alloc() to allocate huge page for 2MB+ requests. To check the difference of this change, we need enable config CONFIG_PTDUMP_DEBUGFS, and call module_alloc(2MB). Before the change, /sys/kernel/debug/page_tables/kernel shows pte for this map. With the change, /sys/kernel/debug/page_tables/ show pmd for thie map. Signed-off-by: Song Liu --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8910b09b5601..b5d1582ea848 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -158,6 +158,7 @@ config X86 select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_HUGE_VMAP if X86_64 || X86_PAE + select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN if X86_64