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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 BD647C43387 for ; Mon, 14 Jan 2019 13:01:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F4A32087E for ; Mon, 14 Jan 2019 13:01:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726526AbfANNB5 (ORCPT ); Mon, 14 Jan 2019 08:01:57 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:39367 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726449AbfANNB4 (ORCPT ); Mon, 14 Jan 2019 08:01:56 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id CD5C8809FC; Mon, 14 Jan 2019 14:01:48 +0100 (CET) Date: Mon, 14 Jan 2019 14:01:54 +0100 From: Pavel Machek To: Jiri Kosina Cc: Tim Chen , Jonathan Corbet , Thomas Gleixner , Linus Torvalds , Tom Lendacky , Ingo Molnar , Peter Zijlstra , Josh Poimboeuf , Andrea Arcangeli , David Woodhouse , Andi Kleen , Dave Hansen , Asit Mallick , Arjan van de Ven , Jon Masters , Waiman Long , Greg KH , Borislav Petkov , linux-kernel@vger.kernel.org, x86@kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] x86/speculation: Add document to describe Spectre and its mitigations Message-ID: <20190114130153.GC21544@amd> References: <64efec3fda40c0758601bf9b1480a35d76d3c487.1545413988.git.tim.c.chen@linux.intel.com> <20181228103437.4c03c181@lwn.net> <20190113231001.GB18710@amd> <20190114120157.GB21544@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="uXxzq0nDebZQVNAZ" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org --uXxzq0nDebZQVNAZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon 2019-01-14 13:06:24, Jiri Kosina wrote: > On Mon, 14 Jan 2019, Pavel Machek wrote: >=20 > > > > That one really is Intel-specific (not even all x86s are affectd). = Same=20 > > > > for Meltdown. > > >=20 > > > At least for Meltdown, your claim is simply not correct. > >=20 > > You are right, there may be few ARM chips affected by meltdown. >=20 > And some of the powerpc64s as well. Do you mean this? https://lkml.org/lkml/2018/1/8/649 Frankly I'd not call it Meltdown, as it works only on data in the cache, so the defense is completely different. Seems more like a l1tf :-). Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --uXxzq0nDebZQVNAZ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlw8iEEACgkQMOfwapXb+vJqgACgmZsTauJosHl/t1XgYZPA2ajV p3UAmgMnZydkKqUgWv16yx1gr9rZQgiP =S6Lg -----END PGP SIGNATURE----- --uXxzq0nDebZQVNAZ--