Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754453AbcJ2WBi (ORCPT ); Sat, 29 Oct 2016 18:01:38 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:40843 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752380AbcJ2WBh (ORCPT ); Sat, 29 Oct 2016 18:01:37 -0400 Date: Sun, 30 Oct 2016 00:01:33 +0200 From: Pavel Machek To: Daniel Gruss Cc: "kernel-hardening@lists.openwall.com" , Mark Rutland , Kees Cook , Peter Zijlstra , Arnaldo Carvalho de Melo , kernel list , Ingo Molnar , Alexander Shishkin Subject: Re: [kernel-hardening] rowhammer protection [was Re: Getting interrupt every million cache misses] Message-ID: <20161029220133.GE3827@amd> References: <20161028172710.GA10309@amd> <20161029194224.GB3827@amd> <5f5741d5-0695-6a56-6c05-ebdaaa896f54@gruss.cc> <20161029210518.GC3827@amd> <571c5ef8-ccce-0b7a-b506-c69a024276a0@gruss.cc> <20161029214540.GD3827@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Qz2CZ664xQdCRdPu" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1142 Lines: 40 --Qz2CZ664xQdCRdPu Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat 2016-10-29 23:49:57, Daniel Gruss wrote: > On 29.10.2016 23:45, Pavel Machek wrote: > >indy/sandy/haswell/skylake, so I'll just use the generic version...?) >=20 > yes, generic might work, but i never tested it on anything that old... >=20 > on my system i have >30 bit flips per second (ivy bridge i5-3xxx) with the > rowhammer-ivy test... sometimes even more than 100 per second... Hmm, maybe I'm glad I don't have a new machine :-). I assume you still get _some_ bitflips with generic "rowhammer"? Best regards, Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --Qz2CZ664xQdCRdPu Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlgVHD0ACgkQMOfwapXb+vIwowCeIPO5shuK1NeNYJ5OdNfg3Y8V EK4An28d6tyJTXnvLwORtcyZf+ZJ84qL =hZaE -----END PGP SIGNATURE----- --Qz2CZ664xQdCRdPu--