From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id IDnWEaPxamL2/gAAbAwnHQ (envelope-from ) for ; Thu, 28 Apr 2022 21:57:23 +0200 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id +Lr5EaPxamKbjgAAauVa8A (envelope-from ) for ; Thu, 28 Apr 2022 21:57:23 +0200 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 0078F3CCFE for ; Thu, 28 Apr 2022 21:57:22 +0200 (CEST) Received: from localhost ([::1]:33696 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nkAGP-0005Hu-AU for larch@yhetil.org; Thu, 28 Apr 2022 15:57:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56320) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nkAFW-0005Hh-Bw for guix-devel@gnu.org; Thu, 28 Apr 2022 15:56:26 -0400 Received: from knopi.disroot.org ([178.21.23.139]:44982) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nkAFU-0002HS-DX for guix-devel@gnu.org; Thu, 28 Apr 2022 15:56:26 -0400 Received: from localhost (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 5F73742D91; Thu, 28 Apr 2022 21:56:22 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from knopi.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oaJEAPJG_srf; Thu, 28 Apr 2022 21:56:17 +0200 (CEST) References: <874k3r8m4m.fsf@gmail.com> <8464b1bff3acb0a84f46ea6dcbbeaa7045b03d1c.camel@telenet.be> <874k3iwysf.fsf@gmail.com> <87pmm512uv.fsf@gnu.org> <86ee1ys55z.fsf@163.com> <20220415183441.49a2628b@riseup.net> <87bkwonlwh.fsf@gmail.com> <87k0b93yaj.fsf@disp3269> <87fslxds24.fsf@gmail.com> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1651175606; bh=l/TuCzTSmwtwCI56pyv4L1y9m3rWFv5BfpahNhfnHKY=; h=References:From:To:Cc:Subject:In-reply-to:Date; b=Bt0EqruQ9px2vFtlAoatV+2seAZVKILhkNBEzzu9Depnf2bJdtkAHEtXWTM0UlOAE 922DkZaQmQ9yyMCWp1zRDmdNR4IWMROSe0JsaWXcPRosICO6vnkNDgj3F1omrZf+8Y eTlPh6R0ErwYMCZeTGLctqf9N9/veVZJlz0UFKx+fXshEqD8Tj1UslvDm9VrQ1Yz1m aOIlmHEfhfRH+0+2a79ygARaL/88HgRIRzhCzvx4pwwANM9r7M7ZDXZtQFsxvFTxWp jadXC5rbGySXKQGlLFHdaeHmLNySt81Hc15legJRzXP65yGIEwNfBrA1LF/E1jLznl VvTMf3LJ+098w== From: Aurora To: Katherine Cox-Buday Cc: raingloom , guix-devel@gnu.org Subject: Re: Hardened toolchain In-reply-to: <87fslxds24.fsf@gmail.com> Date: Thu, 28 Apr 2022 15:53:13 -0400 Message-ID: <87h76d3ryu.fsf@disp3269> Mime-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=178.21.23.139; envelope-from=rind38@disroot.org; helo=knopi.disroot.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1651175843; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=l/TuCzTSmwtwCI56pyv4L1y9m3rWFv5BfpahNhfnHKY=; b=IkvyL0URKG/IfnR5hWCjevXhOS5RQeKPKp7M3lsZG4QHdvBkXLH1tPAlietv83m662x1Hn o0mghtjgI5gJ0rKJUGADbh6/Eyro7WZQjbNBU7sXOsisVeK2ATPFbp2DkcltzzA5Zemtiz pModOiSCXci/XY7YP6If2Tdmx3itJGySkKQl5EhC/XFKdfYP8pgFbOh1bTi7v6uYQE5oE6 GPf+rR9C6/prTBD7TTFZt0ENqUBdeRiFN/RqWQJ7M/H6D0ASgwV2dwUkorUbg0MVnyt+eU xRnjn08ehbTG6Awl6S8hhB2JCXeK2DtMsIZ00PhE6J8RRS1pX+0HW0ZAQpnLkg== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1651175843; a=rsa-sha256; cv=none; b=C2FePKZT5o3Xu8mYD4Qpnwo7Sf5AEeoMOH+q+DuD+Hso/BGExQY8YjbFkVLGI8J8OegijW ChveOqLeJnGb77sIeq38ABE++VlokzekSQaXopSUnSGDHS/ProTiaCw3bCCA+6bieAxobu R+m1yYTQrZ/dNwcqBVpRzfoG1jTVcT4VRHQvPJux5jHr4lcIr4oHASZVH8illfiPPm4MOh CvwglA2z+3LmuSRU0fW29HD8B6/Vg9HELuNunkZ43FQiQ7uEZ71bAc2ez8500c7cDxdDsN 0UcF4/kJEgTcfdT+RLTco28OuxVZORyDdrSagUnUpD/0ks/PmkAz7hL26ukE8Q== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=disroot.org header.s=mail header.b=Bt0EqruQ; dmarc=pass (policy=quarantine) header.from=disroot.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -3.00 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=disroot.org header.s=mail header.b=Bt0EqruQ; dmarc=pass (policy=quarantine) header.from=disroot.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 0078F3CCFE X-Spam-Score: -3.00 X-Migadu-Scanner: scn1.migadu.com X-TUID: y+6SUVEJD9Ez Katherine Cox-Buday writes: > Aurora writes: >> There are multicore processors made in the last decade or two that >> aren't affected by speculative execution vulnerabilities? > > They are vulnerable to them, but not necessarily affected by them. > Consider a computer not networked to the internet and only running > trusted workloads (e.g. scientific HPC, etc.). This is why acknowledging that everyone has a different threat model is important. > > I hope this helps to clarify. It does help, that makes sense, thanks.