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Wed, 27 Mar 2024 20:34:19 -0700 Received: from blueforge.nvidia.com (10.127.8.13) by mail.nvidia.com (10.126.190.180) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Wed, 27 Mar 2024 20:34:19 -0700 From: John Hubbard To: Andrew Morton CC: David Hildenbrand , Peter Xu , "Shuah Khan" , Axel Rasmussen , "Andrea Arcangeli" , , , LKML , "John Hubbard" , Mark Brown , "Muhammad Usama Anjum" , Suren Baghdasaryan , Peter Zijlstra Subject: [PATCH 0/2] Fix selftests/mm build without requiring "make headers" Date: Wed, 27 Mar 2024 20:34:16 -0700 Message-ID: <20240328033418.203790-1-jhubbard@nvidia.com> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD74:EE_|CH3PR12MB8075:EE_ X-MS-Office365-Filtering-Correlation-Id: 0945e720-5ee2-4812-2e07-08dc4ed7f52c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Mar 2024 03:34:21.6610 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0945e720-5ee2-4812-2e07-08dc4ed7f52c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD74.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8075 Hi, As mentioned in each patch, this implements the solution that we discussed in December 2023, in [1]. This turned out to be very clean and easy. It should also be quite easy to maintain. This should also make Peter Zijlstra happy, because it directly addresses the root cause of his "NAK NAK NAK" reply [2]. :) I haven't done much build testing, because selftests are not so easy to build with a cross-compiler. So it's just tested on x86 64-bit so far. [1] https://lore.kernel.org/all/783a4178-1dec-4e30-989a-5174b8176b09@redhat.com/ [2] https://lore.kernel.org/lkml/20231103121652.GA6217@noisy.programming.kicks-ass.net/ Cc: David Hildenbrand Cc: Mark Brown Cc: Muhammad Usama Anjum Cc: Suren Baghdasaryan Cc: Peter Zijlstra John Hubbard (2): selftests: break the dependency upon local header files selftests/mm: fix additional build errors for selftests tools/include/uapi/linux/memfd.h | 39 +++ tools/include/uapi/linux/userfaultfd.h | 386 +++++++++++++++++++++++++ tools/testing/selftests/lib.mk | 9 + tools/testing/selftests/mm/Makefile | 2 +- 4 files changed, 435 insertions(+), 1 deletion(-) create mode 100644 tools/include/uapi/linux/memfd.h create mode 100644 tools/include/uapi/linux/userfaultfd.h base-commit: 98560e9019851bf55b8a4073978a623a3bcf98c0