From nobody Tue Feb 10 03:45:10 2026 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 82A74C76195 for ; Thu, 23 Mar 2023 10:54:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230217AbjCWKyU (ORCPT ); Thu, 23 Mar 2023 06:54:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230145AbjCWKxl (ORCPT ); Thu, 23 Mar 2023 06:53:41 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 900F249F9; Thu, 23 Mar 2023 03:53:08 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2C368AD7; Thu, 23 Mar 2023 03:53:52 -0700 (PDT) Received: from a077209.blr.arm.com (a077209.arm.com [10.162.40.145]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9C3873F766; Thu, 23 Mar 2023 03:53:05 -0700 (PDT) From: Chaitanya S Prakash To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Chaitanya S Prakash , Andrew Morton , "Aneesh Kumar K . V" , "Kirill A . Shutemov" , Shuah Khan , linux-kselftest@vger.kernel.org Subject: [PATCH 4/5] selftests/mm: Configure nr_hugepages for arm64 Date: Thu, 23 Mar 2023 16:22:42 +0530 Message-Id: <20230323105243.2807166-5-chaitanyas.prakash@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230323105243.2807166-1-chaitanyas.prakash@arm.com> References: <20230323105243.2807166-1-chaitanyas.prakash@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Arm64 has a default hugepage size of 512MB when CONFIG_ARM64_64K_PAGES=3Dy is enabled. While testing on arm64 platforms having up to 4PB of virtual address space, a minimum of 6 hugepages were required for all test cases to pass. Support for this requirement has been added. Cc: Andrew Morton Cc: Aneesh Kumar K.V Cc: Kirill A. Shutemov Cc: Shuah Khan Cc: linux-mm@kvack.org Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org=20 Signed-off-by: Chaitanya S Prakash --- tools/testing/selftests/mm/run_vmtests.sh | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/self= tests/mm/run_vmtests.sh index eb9823a6959a..7616b3e4a0f0 100644 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -222,8 +222,16 @@ CATEGORY=3D"hugetlb" run_test ./thuge-gen if [ $VADDR64 -ne 0 ]; then CATEGORY=3D"hugevm" run_test ./virtual_address_range =20 - # virtual address 128TB switch test + # va high address boundary switch test + ARCH_ARM64=3D"arm64" + prev_nr_hugepages=3D$(cat /proc/sys/vm/nr_hugepages) + if [ "$ARCH" =3D=3D "$ARCH_ARM64" ]; then + echo 6 > /proc/sys/vm/nr_hugepages + fi CATEGORY=3D"hugevm" run_test ./va_high_addr_switch.sh + if [ "$ARCH" =3D=3D "$ARCH_ARM64" ]; then + echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages + fi fi # VADDR64 =20 # vmalloc stability smoke test --=20 2.30.2