From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6F1AC4320A for ; Thu, 5 Aug 2021 21:10:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 98A6660EBC for ; Thu, 5 Aug 2021 21:10:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241795AbhHEVKZ (ORCPT ); Thu, 5 Aug 2021 17:10:25 -0400 Received: from mga03.intel.com ([134.134.136.65]:28323 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241748AbhHEVKY (ORCPT ); Thu, 5 Aug 2021 17:10:24 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="214281567" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="214281567" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 14:10:09 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="437941254" Received: from akleen-mobl1.amr.corp.intel.com (HELO [10.212.183.241]) ([10.212.183.241]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 14:10:09 -0700 Subject: Re: [PATCH v1] driver: base: Add driver filter support To: Dan Williams Cc: Greg Kroah-Hartman , Kuppuswamy Sathyanarayanan , "Rafael J . Wysocki" , Jonathan Corbet , Kuppuswamy Sathyanarayanan , Linux Kernel Mailing List , Linux Doc Mailing List References: <20210804174322.2898409-1-sathyanarayanan.kuppuswamy@linux.intel.com> <21db8884-5aa1-3971-79ef-f173a0a95bef@linux.intel.com> <1e0967ee-c41e-fd5d-f553-e4d7ab88838c@linux.intel.com> From: Andi Kleen Message-ID: <9b2956f5-3acf-e798-ff0f-002d2d5254db@linux.intel.com> Date: Thu, 5 Aug 2021 14:10:08 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/5/2021 12:01 PM, Dan Williams wrote: >> That's why I think the builtin allow list hook is still needed. Thoughts? > I see nothing that prevents a built-in allow list to augment the > driver-core default. Is there a gap I'm missing? Okay so you're suggesting to build the builtin allow list on top of the existing framework? I thought Greg's suggestion was to only rely on user space only. But if we have a way to change the authorized defaults by device (not just bus) from inside the kernel at early boot that could well work. Doing it only on the bus level I suspect wouldn't work though. -Andi