From patchwork Mon Dec 11 22:52:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Verma, Vishal L" X-Patchwork-Id: 13488188 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3AF7E53E13 for ; Mon, 11 Dec 2023 22:52:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XPvOROPa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1702335151; x=1733871151; h=from:subject:date:message-id:mime-version: content-transfer-encoding:to:cc; bh=eRjouxxYbp6BIJhAGRJgKvaoh/ihepCgDQj/UtlSTMk=; b=XPvOROPayMCbxTv6umRNUnsyQVrrK0lsgEp/cr6AdL/0cXT4ZbXTXZo1 ykxq4Tnc4IT9UU9PjXTumQp+2g5YppkSIpmWXKy9Y4j/VxyO6AOAVL788 nZ+ddZZGxvCWrt9h/UVS1cXC7w9/2tohXBhvZ6xKC7zVnuW1ciPi04S2V o0Xhm0CBdtP36FqPIQ/SLg4kktTf7kinvVwY2TUda7WEpGwFzRPljEyK0 0OPqg7+dMFPBLp1vBFc6lhLwJd71JSkC6tchIA22VLjcIcW2RqWP8B7ms SAMLt0jNYlebUA7SXNRGf8A1ToWBykHAzdVpdJnNgMYmqsFOY5EZoWR42 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10921"; a="8083748" X-IronPort-AV: E=Sophos;i="6.04,268,1695711600"; d="scan'208";a="8083748" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Dec 2023 14:52:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10921"; a="946511328" X-IronPort-AV: E=Sophos;i="6.04,268,1695711600"; d="scan'208";a="946511328" Received: from tlyon-mobl2.amr.corp.intel.com (HELO [192.168.1.200]) ([10.212.89.19]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Dec 2023 14:52:28 -0800 From: Vishal Verma Subject: [PATCH v3 0/2] Add DAX ABI for memmap_on_memory Date: Mon, 11 Dec 2023 15:52:16 -0700 Message-Id: <20231211-vv-dax_abi-v3-0-acf6cc1bde9f@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAKGSd2UC/3WMQQ6CMBBFr2K6tmY6rQVdeQ9jTCmDTKJgWtJgC He34IaN+av3k/cmESkwRXHeTSJQ4sh9l0Hvd8K3rnuQ5DqzQECtAI8yJVm78e4qlqpwqE7eWCi syMI7UMPjGrveMrcchz581nZSy/vLINhtJikJ0hSGqrIkBOUv3A30PPj+JZZMwv8qZrUxeai1r aHcqvM8fwE5O/0+3wAAAA== To: Dan Williams , Vishal Verma , Dave Jiang Cc: linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, David Hildenbrand , Dave Hansen , Huang Ying , Li Zhijian , Jonathan Cameron X-Mailer: b4 0.13-dev-433a8 X-Developer-Signature: v=1; a=openpgp-sha256; l=1502; i=vishal.l.verma@intel.com; h=from:subject:message-id; bh=eRjouxxYbp6BIJhAGRJgKvaoh/ihepCgDQj/UtlSTMk=; b=owGbwMvMwCXGf25diOft7jLG02pJDKnlk1b7del86Ps/ZemT3JJDSXPsMlaksYg2sJQ5JmU++ 1fn4Tm9o5SFQYyLQVZMkeXvno+Mx+S25/MEJjjCzGFlAhnCwMUpABNRCmH4nxGiJlTs9PKc7gKe /GsbXulelYp/vdkihq9lgQlrwoyqh4wM952ENK+nPHNbO3fD1si6SYtfb5GauvSdwdmOH4UbCxg iOAE= X-Developer-Key: i=vishal.l.verma@intel.com; a=openpgp; fpr=F8682BE134C67A12332A2ED07AFA61BEA3B84DFF The DAX drivers were missing sysfs ABI documentation entirely. Add this missing documentation for the sysfs ABI for DAX regions and Dax devices in patch 1. Add a new ABI for toggling memmap_on_memory semantics in patch 2. The missing ABI was spotted in [1], this series is a split of the new ABI additions behind the initial documentation creation. [1]: https://lore.kernel.org/linux-cxl/651f27b728fef_ae7e7294b3@dwillia2-xfh.jf.intel.com.notmuch/ Changes in v3: - Fix typo in ABI docs (Zhijian Li) - Add kernel config and module parameter dependencies to the ABI docs entry (David Hildenbrand) - Ensure kmem isn't active when setting the sysfs attribute (Ying Huang) - Simplify returning from memmap_on_memory_store() - Link to v2: https://lore.kernel.org/r/20231206-vv-dax_abi-v2-0-f4f4f2336d08@intel.com Changes in v2: - Fix CC lists, patch 1/2 didn't get sent correctly in v1 - Link to v1: https://lore.kernel.org/r/20231206-vv-dax_abi-v1-0-474eb88e201c@intel.com --- Vishal Verma (2): Documentatiion/ABI: Add ABI documentation for sys-bus-dax dax: add a sysfs knob to control memmap_on_memory behavior drivers/dax/bus.c | 47 +++++++++ Documentation/ABI/testing/sysfs-bus-dax | 168 ++++++++++++++++++++++++++++++++ 2 files changed, 215 insertions(+) --- base-commit: c4e1ccfad42352918810802095a8ace8d1c744c9 change-id: 20231025-vv-dax_abi-17a219c46076 Best regards,