From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226vtz7ANhMdSMUwn/LZgNaduBnBDaxKWhn2uZiIVXpZlkgZAt2AhgCQX29LG+yNxh+aWQQE ARC-Seal: i=1; a=rsa-sha256; t=1518555880; cv=none; d=google.com; s=arc-20160816; b=ZvI+1fuDnMIcvaavNw+twZPyLDamz3srFvcjHXw0i5OLAaKvfFLBglQEejLbDregRV D407Im9KOiQwKVCw2JbARd8JaPveAtsNRkm7ExWe6sEO4OlBzxJtI3T68pB2j1XbhOly 5ToUR0NGR0UNKAzqhilNRKkaAgc58yCPH2yBfu1AgfxbF+v5WhZZo86XMeS9SJ8GF9tK wcrPgzLezpelx/n414M1SlN0G8Sjes7TkBfUohjyUMaa3lxg53PZ3V2AuAvYUT4jdSwz iasr7UM6KMMocd2G7+hdhyI7279qb+4ygcj7GfhSK8i/pn1MsrUN2VnmjpOs6IHAX+a5 oaUg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version:references :message-id:subject:cc:to:from:date:arc-authentication-results; bh=sThUQ7I5actU64qWFrQcCluvsqx+KULDwYSH+mi88tE=; b=HxJiDIM7Usa/SaSFAjYbUWafShznvTbfdjvcVu8hxvzKGxUWTSXKNdxhtoRNraQBAc P2jOb7JpSuWnah4nXzq74UkxrjbeU1Q4WXkpKZDwLQXpP23mmf0Tapa+1egOfyVkMzPL 9vsBMEmaAwMFzmC58fnzFKeJFR8CAaaBje/8eEYCzcZyr9mUOwqHt1V2EFFgWQXRMYXG Ai+FnVCSbFDe1XVI94wz3xrXU1z+U0zZeXGG6UZgwjpjlYKXRHMMh2LAmLLR0jclE2dJ TI+8TpsCf13YIGwuqBvXnA1ZrB8Zt5O3l4y/sCTcK2o8YtUM6JslcNCcQy0VJN8OnZC/ rK0Q== ARC-Authentication-Results: i=1; mx.google.com; spf=neutral (google.com: 195.113.26.193 is neither permitted nor denied by best guess record for domain of pavel@ucw.cz) smtp.mailfrom=pavel@ucw.cz Authentication-Results: mx.google.com; spf=neutral (google.com: 195.113.26.193 is neither permitted nor denied by best guess record for domain of pavel@ucw.cz) smtp.mailfrom=pavel@ucw.cz Date: Tue, 13 Feb 2018 22:04:38 +0100 From: Pavel Machek To: Ondrej Zary Cc: whiteheadm@acm.org, David Laight , Arnd Bergmann , Alan Cox , David Woodhouse , Guenter Roeck , Greg Kroah-Hartman , Hugh Dickins , Dave Hansen , Jiri Kosina , Borislav Petkov , Kees Cook , Jamie Iles , Eduardo Valentin , Laura Abbott , Rik van Riel , Thomas Gleixner , Linux Kernel Mailing List Subject: Re: [BUG] x86 : i486 reporting to be vulnerable to Meltdown/Spectre_V1/Spectre_V2 Message-ID: <20180213210438.GA6569@amd> References: <63ca28c5acb64de5ba33a81b6da5c507@AcuMS.aculab.com> <201802090941.41782.linux@rainbow-software.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ew6BAiZeqk4r7MaW" Content-Disposition: inline In-Reply-To: <201802090941.41782.linux@rainbow-software.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1591354140743903681?= X-GMAIL-MSGID: =?utf-8?q?1592321250788924436?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: --ew6BAiZeqk4r7MaW Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > You might think this absolutely crazy, but I would be willing to test > > such systems if I can get my hands on the needed hardware that I lack. > > I am already doing sanity testing on Intel > > i486/i586/i586-MMX/i686-PentiumPro systems, I just don't have the > > clone cpus (Cyrix, etc). > > > > While few people are using the 32bit kernel, I don't think we want to > > kill it completely just yet. >=20 > I have a working Cyrix MII (was actively using it last year, now upgraded= to a=20 > P3-based Celeron). Some AMD CPUs too - K6(maybe -2 or -3?), not sure abou= t K5=20 > and also a Rise mP6. But never got a WinChip. I'm using Core Duo daily (backup machine, web browsing), and use Pentium M as an ssh client say once in month. > So the question is: what to test? Self-compiling kernel is traditional stability test. I do have two Geodes I believe, but the hardware is quite nasty to use. (One has some kind of forth-based BIOS -- forgot the name). > BTW. Kernel was not able to identify mP6 CPU 6 years ago, patches were=20 > ignored. You may want to re-send :-). Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --ew6BAiZeqk4r7MaW Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlqDUuYACgkQMOfwapXb+vJBHwCgkedcvWa3APomnAdMKAxTm19g 1+YAoKeemFW2mWPogmzG44VoOjqXwUfr =Vhep -----END PGP SIGNATURE----- --ew6BAiZeqk4r7MaW--