From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clark Williams Subject: Re: [RT] [RFC] simple SMI detector Date: Sun, 25 Jan 2009 09:04:54 -0600 Message-ID: <20090125090454.753c05dd@torg> References: <1232751312.3990.59.camel@perihelion.bos.jonmasters.org> <75b66ecd0901231833j2fda4554sb0f47457ab838566@mail.gmail.com> <1232845026.3990.71.camel@perihelion.bos.jonmasters.org> <1232849565.29318.112.camel@sven.thebigcorporation.com> <20090125040246.GE9216@mit.edu> <195c7a900901250349t6c0cdc73gdbd71a9f87151d72@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: base64 Cc: Thomas Gleixner , Theodore Tso , Sven-Thorsten Dietrich , Jon Masters , Lee Revell , linux-rt-users@vger.kernel.org, LKML , "Luis Claudio R. Goncalves" To: Bastien ROUCARIES Return-path: Received: from mx2.redhat.com ([66.187.237.31]:60477 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752832AbZAYPFj (ORCPT ); Sun, 25 Jan 2009 10:05:39 -0500 In-Reply-To: <195c7a900901250349t6c0cdc73gdbd71a9f87151d72@mail.gmail.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: LS0tLS1CRUdJTiBQR1AgU0lHTkVEIE1FU1NBR0UtLS0tLQ0KSGFzaDogU0hBMQ0KDQpPbiBTdW4s IDI1IEphbiAyMDA5IDEyOjQ5OjE4ICswMTAwDQpCYXN0aWVuIFJPVUNBUklFUyA8cm91Y2FyaWVz LmJhc3RpZW5AZ21haWwuY29tPiB3cm90ZToNCg0KPiBPbiBTdW4sIEphbiAyNSwgMjAwOSBhdCAx MDo0MCBBTSwgVGhvbWFzIEdsZWl4bmVyIDx0Z2x4QGxpbnV0cm9uaXguZGU+IHdyb3RlOg0KPiA+ DQo+ID4gTXkgY29uY2VybiBhYm91dCB0aGUgU01JIGRpc2FibGUgbW9kdWxlIGlzIHRoYXQgaXQg Y2FuIGRhbWFnZSBKb2UNCj4gPiB1c2VycyBoYXJkd2FyZS4gSSBoYXZlIGF0IGxlYXN0IHR3byBy ZXBvcnRzIHdoZXJlIHRoZSBDUFUgZ290IGZyaWVkDQo+ID4gYW5kIHNvbWUgb3RoZXJzIHdoZXJl IHBlb3BsZSBnb3QgY29uZnVzZWQgYmVjYXVzZSBjaGlwcyBzdGFydGVkDQo+ID4gYmVoYXZpbmcg d2VpcmQgYW5kIGl0IHRvb2sgcXVpdGUgYSB0aW1lIHRvIGZpZ3VyZSBvdXQgdGhhdCB0aGV5IHVz ZWQNCj4gPiB0aGUgU01JIGRpc2FibGVyLiBBIGJpZyBmYXQgd2FybmluZyBhYm91dCB0aGlzIGNv ZGUgaXMgZGVmaW5pdGVseQ0KPiA+IG5lY2Vzc2FyeS4NCj4gPg0KPiA+IFRoYW5rcywNCj4gDQo+ IA0KPiBJIHN1cHBvc2UgdGhlIG5vbiBqb2UgdXNlciBjb3VsZCBmbGFzaCB0aGVpciBtb3RoZXJi b2FyZCB3aXRoDQo+IGxpbnV4Y29yZSBhbmQgdGhlcmVmb3JlIGRvIG5vdCBkaXN0cnViIGJ5IFNN SSA6KQ0KPiANCg0KRXhjZXB0IGZvciB0aGUgZmFjdCB0aGF0IGxpbnV4Y29yZSBpcyB1bmF3YXJl IG9mIHRoZSBzcGVjaWZpYw0KcmVxdWlyZW1lbnRzIGEgcGFydGljdWxhciBtb3RoZXJib2FyZCBo YXMgZm9yIHRoZXJtYWwgbWFuYWdlbWVudC4NCg0KVHVybmluZyBvZmYgU01JJ3MgdW5jb25kaXRp b25hbGx5IGlzIGEgKmJhZCogaWRlYS4gQmV0dGVyIHRvIHN0YXJ0DQp0ZWxsaW5nIGhhcmR3YXJl IHZlbmRvcnMgdGhhdCB3ZSBjYW4ndCB1c2UgdGhlaXIgcGxhdGZvcm0gYmVjYXVzZSBvZg0KdW5l eHBsYWluZWQgbGF0ZW5jaWVzICh3aGljaCB3ZSBwcmVzdW1lIHRvIGJlIFNNSSdzKS4gDQoNCkNs YXJrDQotLS0tLUJFR0lOIFBHUCBTSUdOQVRVUkUtLS0tLQ0KVmVyc2lvbjogR251UEcgdjIuMC4x MCAoR05VL0xpbnV4KQ0KDQppRVlFQVJFQ0FBWUZBa2w4ZjVvQUNna1FIeXVqLytUVEVwMEp1d0Nm UWFhdWdVK01ZOG5XSEtzdlh1Vk5tRTZYDQpJRVlBb01GbjcwQks5TmN6ekhJMVhublF3eTdieC9K YQ0KPWFSS2wNCi0tLS0tRU5EIFBHUCBTSUdOQVRVUkUtLS0tLQ0K From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757441AbZAYPFt (ORCPT ); Sun, 25 Jan 2009 10:05:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754812AbZAYPFk (ORCPT ); Sun, 25 Jan 2009 10:05:40 -0500 Received: from mx2.redhat.com ([66.187.237.31]:60477 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752832AbZAYPFj (ORCPT ); Sun, 25 Jan 2009 10:05:39 -0500 Date: Sun, 25 Jan 2009 09:04:54 -0600 From: Clark Williams To: Bastien ROUCARIES Cc: Thomas Gleixner , Theodore Tso , Sven-Thorsten Dietrich , Jon Masters , Lee Revell , linux-rt-users@vger.kernel.org, LKML , "Luis Claudio R. Goncalves" Subject: Re: [RT] [RFC] simple SMI detector Message-ID: <20090125090454.753c05dd@torg> In-Reply-To: <195c7a900901250349t6c0cdc73gdbd71a9f87151d72@mail.gmail.com> References: <1232751312.3990.59.camel@perihelion.bos.jonmasters.org> <75b66ecd0901231833j2fda4554sb0f47457ab838566@mail.gmail.com> <1232845026.3990.71.camel@perihelion.bos.jonmasters.org> <1232849565.29318.112.camel@sven.thebigcorporation.com> <20090125040246.GE9216@mit.edu> <195c7a900901250349t6c0cdc73gdbd71a9f87151d72@mail.gmail.com> Organization: Red Hat, Inc Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by alpha id n0PF5qwM030102 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sun, 25 Jan 2009 12:49:18 +0100 Bastien ROUCARIES wrote: > On Sun, Jan 25, 2009 at 10:40 AM, Thomas Gleixner wrote: > > > > My concern about the SMI disable module is that it can damage Joe > > users hardware. I have at least two reports where the CPU got fried > > and some others where people got confused because chips started > > behaving weird and it took quite a time to figure out that they used > > the SMI disabler. A big fat warning about this code is definitely > > necessary. > > > > Thanks, > > > I suppose the non joe user could flash their motherboard with > linuxcore and therefore do not distrub by SMI :) > Except for the fact that linuxcore is unaware of the specific requirements a particular motherboard has for thermal management. Turning off SMI's unconditionally is a *bad* idea. Better to start telling hardware vendors that we can't use their platform because of unexplained latencies (which we presume to be SMI's). Clark -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.10 (GNU/Linux) iEYEARECAAYFAkl8f5oACgkQHyuj/+TTEp0JuwCfQaaugU+MY8nWHKsvXuVNmE6X IEYAoMFn70BK9NczzHI1XnnQwy7bx/Ja =aRKl -----END PGP SIGNATURE----- {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I