From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: Raise maximum number of memory controllers From: Borislav Petkov Message-Id: <20180927045244.GA30912@zn.tnic> Date: Thu, 27 Sep 2018 06:52:44 +0200 To: "Luck, Tony" Cc: Russ Anderson , Mauro Carvalho Chehab , Greg KH , Justin Ernst , russ.anderson@hpe.com, Mauro Carvalho Chehab , linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, Aristeu Rozanski Filho List-ID: T24gV2VkLCBTZXAgMjYsIDIwMTggYXQgMDQ6MDI6NTdQTSAtMDcwMCwgTHVjaywgVG9ueSB3cm90 ZToKPiBXZSBkb24ndCBoYXZlIHN0YXRzLCBub3IgY29udHJvbCBvZiBwb3dlciBvbiBhIHBlciBt ZW1vcnkgY29udHJvbGxlcgo+IG9yIHBlciBkaW1tIGJhc2lzLiBTbyBhbGwgdGhlc2UgZmlsZXMg YXJlIGp1c3Qgbm9pc2UuCgpZZWFoLCBhbmQgYWxzbywgbG9va2luZyBhdCB5b3VyIHByZXZpb3Vz IG1haWwsIHN0dWZmIGxpa2U6Cgovc3lzL2J1cy9tYzYvZGV2aWNlcy9kaW1tMAovc3lzL2J1cy9t YzQvZGV2aWNlcy9kaW1tMAoKZG9lc24ndCBtYWtlIGFueSBzZW5zZTogd2h5IGlzIG1jKiBkaXJl Y3RseSB1bmRlciBidXM/IEl0IHNob3VsZCBiZQp1bmRlciAuLi5idXMvZWRhYy9tYy8uLi4KCldl J2xsIGhhdmUgdG8gY2xlYW4gaXQgdXAgY2FyZWZ1bGx5LCB3aGVuIHRoZXJlJ3MgdGltZS4KCj4g QnV0IC4uLiB3ZSBhcmUgYXQgLXJjNS4gTm90IHN1cmUgdGhhdCB3ZSdsbCBmaWd1cmUgb3V0LCB3 cml0ZSwgdGVzdCAmIGRlYnVnCj4gdGhlIHByb3BlciBzb2x1dGlvbiBpbiB0aGUgbmV4dCAzLTQg d2Vla3MuIFNvIHBlcmhhcHMgd2Ugc2hvdWxkIGFwcGx5Cj4gCj4gLSNkZWZpbmUgRURBQ19NQVhf TUNTICAgMTYKPiArI2RlZmluZSBFREFDX01BWF9NQ1MgICA2NAo+IAo+IGFzIGEgdGVtcG9yYXJ5 IGJhbmQtYWlkIHRvIGdldCBIUEUncyAzMi1zb2NrZXQgbWFjaGluZSBydW5uaW5nIHdoaWxlCj4g d2Ugd29yayBvbiB0aGUgcHJvcGVyIGZpeD8KClllYWgsIGFmdGVyIHNsZWVwaW5nIG9uIGl0IEkg c2VlIGl0IHRoZSBzYW1lIHdheSAtIGJhbmQtYWlkIGl0IG5vdyBhbmQKY2xlYW4gaXQgdXAgcHJv cGVybHkgbGF0ZXIuCgpUaHguCg== 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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,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 78299C43382 for ; Thu, 27 Sep 2018 04:52:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AE6521570 for ; Thu, 27 Sep 2018 04:52:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3AE6521570 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726632AbeI0LJD (ORCPT ); Thu, 27 Sep 2018 07:09:03 -0400 Received: from mail.skyhub.de ([5.9.137.197]:57862 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726469AbeI0LJD (ORCPT ); Thu, 27 Sep 2018 07:09:03 -0400 X-Virus-Scanned: Nedap ESD1 at mail.skyhub.de Received: from mail.skyhub.de ([127.0.0.1]) by localhost (blast.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 2EZ77Vu4IZiC; Thu, 27 Sep 2018 06:52:43 +0200 (CEST) Received: from zn.tnic (p200300EC2BC7FB00329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2bc7:fb00:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id A90CB1EC0104; Thu, 27 Sep 2018 06:52:43 +0200 (CEST) Date: Thu, 27 Sep 2018 06:52:44 +0200 From: Borislav Petkov To: "Luck, Tony" Cc: Russ Anderson , Mauro Carvalho Chehab , Greg KH , Justin Ernst , russ.anderson@hpe.com, Mauro Carvalho Chehab , linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, Aristeu Rozanski Filho Subject: Re: [PATCH] Raise maximum number of memory controllers Message-ID: <20180927045244.GA30912@zn.tnic> References: <20180925152659.GE23986@zn.tnic> <20180925175023.GA16725@agluck-desk> <20180925180458.GG23986@zn.tnic> <20180926093510.GA5584@zn.tnic> <20180926152752.GG5584@zn.tnic> <20180926130340.6b22918b@coco.lan> <20180926161749.GI5584@zn.tnic> <20180926181035.GA1132@agluck-desk> <20180926182317.patqjso7nzw2oxiz@hpe.com> <20180926230257.GA5666@agluck-desk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20180926230257.GA5666@agluck-desk> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 26, 2018 at 04:02:57PM -0700, Luck, Tony wrote: > We don't have stats, nor control of power on a per memory controller > or per dimm basis. So all these files are just noise. Yeah, and also, looking at your previous mail, stuff like: /sys/bus/mc6/devices/dimm0 /sys/bus/mc4/devices/dimm0 doesn't make any sense: why is mc* directly under bus? It should be under ...bus/edac/mc/... We'll have to clean it up carefully, when there's time. > But ... we are at -rc5. Not sure that we'll figure out, write, test & debug > the proper solution in the next 3-4 weeks. So perhaps we should apply > > -#define EDAC_MAX_MCS 16 > +#define EDAC_MAX_MCS 64 > > as a temporary band-aid to get HPE's 32-socket machine running while > we work on the proper fix? Yeah, after sleeping on it I see it the same way - band-aid it now and clean it up properly later. Thx. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.