Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753571AbeADWkW (ORCPT + 1 other); Thu, 4 Jan 2018 17:40:22 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:48575 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753384AbeADWkU (ORCPT ); Thu, 4 Jan 2018 17:40:20 -0500 Date: Thu, 4 Jan 2018 23:40:18 +0100 From: Pavel Machek To: Tim Mouraveiko Cc: linux-kernel@vger.kernel.org Subject: Re: Bricked x86 CPU with software? Message-ID: <20180104224018.GA20860@amd> References: <5A4D7986.2138.FDC590CF@tim.ml.ipcopper.com> <5A4E9603.20778.21CD7C4@tim.ml.ipcopper.com> <20180104212334.GA17986@amd> <5A4EA724.8051.25FC07E@tim.ml.ipcopper.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="VbJkn9YxBvnuCH5J" Content-Disposition: inline In-Reply-To: <5A4EA724.8051.25FC07E@tim.ml.ipcopper.com> 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 Return-Path: --VbJkn9YxBvnuCH5J Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu 2018-01-04 14:13:56, Tim Mouraveiko wrote: > > > As I mentioned before, I repeatedly and fully power-cycled the mother= board and reset BIOS > > > and etc. It made no difference. I can see that the processor was not = drawing any power. The > > > software code behaved in a similar fashion on other processors, until= I fixed it so that it would > > > not kill any more processors. > > >=20 > >=20 > > So you have code that killed more than one processor? Save it! We want > > a copy. > >=20 > > Do you have model numbers of affected CPUs? >=20 >=20 > Why would you want a copy? Last time I checked bricked CPUs do not work w= ell, even as=20 > decorations. >=20 > I believe the processors were Intel Xeon series. The code would likely ru= n on others too. Well... Intel's shares are overpriced, and you have code to fix that :-). Actually... I don't think your code works. That's why I'm curious. But if it works, its rather a big news... and I'm sure Intel and cloud providers are going to be interested. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --VbJkn9YxBvnuCH5J Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlpOrVIACgkQMOfwapXb+vJsQQCgnQTJDymy0Jon3t2LvBrZpjfS P8kAoJDSfyGmmJ8ihVL26/Yh3XdjgECK =mi8v -----END PGP SIGNATURE----- --VbJkn9YxBvnuCH5J--