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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 D2229C433EF for ; Sat, 16 Jun 2018 15:58:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82F2B20891 for ; Sat, 16 Jun 2018 15:58:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82F2B20891 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756875AbeFPP6v (ORCPT ); Sat, 16 Jun 2018 11:58:51 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:38785 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932258AbeFPP6u (ORCPT ); Sat, 16 Jun 2018 11:58:50 -0400 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id A8EDD80548; Sat, 16 Jun 2018 17:58:48 +0200 (CEST) Date: Sat, 16 Jun 2018 17:58:44 +0200 From: Pavel Machek To: Henrique de Moraes Holschuh Cc: Pali =?iso-8859-1?Q?Roh=E1r?= , Henrique de Moraes Holschuh , ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: ThinkPad T480s & LED_MUTE, LED_MICMUTE Message-ID: <20180616155844.GA19005@amd> References: <20180608111057.4wxpg7m7nm7suf6n@pali> <20180615112606.GA3986@amd> <20180615113728.h7snxhe2juaqvjyx@pali> <20180615123007.nxsymdvr3nj3it5i@khazad-dum.debian.net> <20180615190915.cdntdeesc52ei35u@pali> <20180615233628.gy2ffgupctheyqof@khazad-dum.debian.net> <20180616073334.GA13880@amd> <20180616141231.dy4mvirgeax2tviq@khazad-dum.debian.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="0OAP2g/MAC+5xKAE" Content-Disposition: inline In-Reply-To: <20180616141231.dy4mvirgeax2tviq@khazad-dum.debian.net> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0OAP2g/MAC+5xKAE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > Question is if we want flexibility or security. >=20 > For thinkpad-acpi, it is security by default. Flexibility is allowed as > *compile*-time (Kconfig) option, and only as long as it defaults to > secure *and* the help text is very explicit at instructing distros to > NOT enable this option. Yep, no problem with that. > That said, if mic-mute is under HDA mixer control, it will only be > "secure" if ALSA is also blocking userspace access to the relevant bits, > and if that is not possible to do properly, might as well go for > flexibility. But only in that case. That also makes sense. > That would be why I use phisical shutters on embedded webcams unless the > hardware actually airgaps them from the USB bus when the privacy switch > is active. And yes, I use them, too. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --0OAP2g/MAC+5xKAE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlslM7QACgkQMOfwapXb+vKv7ACeNF8ycrtZ5XA1zZHP2yYDaEl4 YykAni8e6gJHApjHWmbYWW6GqZye1+pG =4Cg/ -----END PGP SIGNATURE----- --0OAP2g/MAC+5xKAE--