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 uNZMBvvTamJhfgAAbAwnHQ (envelope-from ) for ; Thu, 28 Apr 2022 19:50:51 +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 oDF9BvvTamKNhQAAauVa8A (envelope-from ) for ; Thu, 28 Apr 2022 19:50:51 +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 A269939138 for ; Thu, 28 Apr 2022 19:50:50 +0200 (CEST) Received: from localhost ([::1]:49530 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nk8Hx-0003Hs-I5 for larch@yhetil.org; Thu, 28 Apr 2022 13:50:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59026) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nk8HN-0003HW-Co for guix-devel@gnu.org; Thu, 28 Apr 2022 13:50:13 -0400 Received: from cascadia.aikidev.net ([2600:3c01:e000:267:0:a171:de7:c]:51408) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nk8HL-00008k-Dr for guix-devel@gnu.org; Thu, 28 Apr 2022 13:50:13 -0400 Received: from localhost (unknown [IPv6:2600:3c01:e000:21:7:77:0:20]) (Authenticated sender: vagrant@cascadia.debian.net) by cascadia.aikidev.net (Postfix) with ESMTPSA id D1DB51AB85; Thu, 28 Apr 2022 10:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=debian.org; s=1.vagrant.user; t=1651168209; bh=FvxLrxwuX3WvdFPNTaifUhGcfpUPLDMyKC2IrOOC7Lw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=nDzKSce1hbI1VaFX5WHpwOe15wqqLkNPJ08l91UUl8yUEk067rRivguRrLdmzDIhs k9NKnRMm82zazfmXj0mZSFD26AnE/U6gprSj2pCsOyqfBSCxhy8hRK37iQapHBnYvt 3SfLWOYsV7ejr6028UZuMhk/9DkzL/tL8c8Dqjw9n2yo5KnRK2qX/RGi73Rp8RYEIR 8aR4BVUISiCn+PdzEXutWNf3rUIzGlTaRHRIJtTeHPjHOMcELTvQdRbHQxtM7sCUUc Kn8P5RmIwHxphgj7wR3FMumYqJ42y3RBH2BbbKptfioqgviP8VsBFi6MnvOUQSK0Xa pZdXK+TO+SOlw== From: Vagrant Cascadian To: Aurora , Katherine Cox-Buday Subject: Re: Hardened toolchain In-Reply-To: <87k0b93yaj.fsf@disp3269> 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> Date: Thu, 28 Apr 2022 10:50:05 -0700 Message-ID: <87sfpxayia.fsf@contorta> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Received-SPF: none client-ip=2600:3c01:e000:267:0:a171:de7:c; envelope-from=vagrant@debian.org; helo=cascadia.aikidev.net X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_NONE=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: , Cc: guix-devel@gnu.org 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=1651168250; 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=vA9wRxEGFJwhGC9Zhs209IX+sLE6p5fDMQ0F/pAXwhQ=; b=g29qT2z2ne9Kh1PPDEo3pemA6onS4ag+4qJUzBhhYalsV3ic4qvJCufht2QVl5L017mxiS LVahqo0ICWx2w1bZEEzcTT341XOZVk00hnjyb1E8br8GllltIMlSru3YRvJVFaefzjB9u8 UPiA0rvaYzq1bQohzGrLxvUL5bP8FD760B9Ke6U8oBJLujN1998dg1f8eaczvgr4Pz32Cl IiL+BCxgLn0u2HhGS44EtxaImvSxhSbTg0hoBdiQuQHUz90vIdhk5Q9KG1sGf56NX/TgG7 FZmg6ciNp7/AcASFPWLWCS0iUrvfITbaP+mRTTKbXFz6n5iH6GlNiz2H7vO9Cw== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1651168250; a=rsa-sha256; cv=none; b=YGfIF/A7OentTtEO8ZXz8GSsryqaMYQr+mTxU3fc2FqThUgGI1wmglo3y+Df/OHks1NFI6 wFyynglJ6JJn/9p/T/BXL/V+/LF7fB75pHQQDTsmQXz3H0kLYklizEr+Se5b2LexYFelJP plYonVPF2VgfTRpHNIa4WN9gP7eEwVqfhaw/ZigOg3UmuSd4Hv1W/5HObXMo9JVEB7sT19 IPKW6CE5BWB8vRwiM2RMuVH4OijJTkh5o2rsjPsqSGYdY4HDdwSCgBz2TZWMYdDE9sLnmb H8KI+B+q5+epFzwKTtqLRLDt6Bu6+qK2nfkh2jA93kBLoPOSdskuQOijN0r/HQ== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=debian.org header.s=1.vagrant.user header.b=nDzKSce1; dmarc=none; 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: -0.40 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=debian.org header.s=1.vagrant.user header.b=nDzKSce1; dmarc=none; 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: A269939138 X-Spam-Score: -0.40 X-Migadu-Scanner: scn1.migadu.com X-TUID: DR0DnZf33JEz --=-=-= Content-Type: text/plain On 2022-04-28, Aurora wrote: > Katherine Cox-Buday writes: > >> Everyone has different threat models and needs. A lot of computers have CPU speculative execution attack mitigation disabled because those types of attacks will never affect those computers, and it reduces the performance of the CPU a lot. > > There are multicore processors made in the last decade or two that > aren't affected by speculative execution vulnerabilities? There are some, such as the ARM-based Allwinner A64 used in in the pinebook and pinephone. Probably various processors targeted at the mobile market as well. live well, vagrant --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRlgHNhO/zFx+LkXUXcUY/If5cWqgUCYmrTzgAKCRDcUY/If5cW qodNAQDm6mhoHBs2WhziMyKynUUUZ08oYugJAEotGrdl6lRtCAD9EAl58aobAvkX IjryhB1UynIOwB7d8NxSBxl8RBMBvAw= =8iXr -----END PGP SIGNATURE----- --=-=-=--