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: <20180925152659.GE23986@zn.tnic> Date: Tue, 25 Sep 2018 17:26:59 +0200 To: Tony Luck Cc: Justin Ernst , russ.anderson@hpe.com, Mauro Carvalho Chehab , linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org List-ID: T24gVHVlLCBTZXAgMjUsIDIwMTggYXQgMDk6MzQ6NDlBTSAtMDUwMCwgSnVzdGluIEVybnN0IHdy b3RlOgo+IFdlIG9ic2VydmUgYW4gb29wcyBpbiB0aGUgc2t4X2VkYWMgbW9kdWxlIGR1cmluZyBi b290Lgo+IEV4YW1pbmluZyAvdmFyL2xvZy9tZXNzYWdlczoKPiBbIDM0MDEuOTg1NzU3XSBFREFD IE1DMDogR2l2aW5nIG91dCBkZXZpY2UgdG8gbW9kdWxlIHNreF9lZGFjIGNvbnRyb2xsZXIgU2t5 bGFrZSBTb2NrZXQjMCBJTUMjMAo+IFsgMzQwMS45ODU4ODddIEVEQUMgTUMxOiBHaXZpbmcgb3V0 IGRldmljZSB0byBtb2R1bGUgc2t4X2VkYWMgY29udHJvbGxlciBTa3lsYWtlIFNvY2tldCMwIElN QyMxCj4gWyAzNDAxLjk4NjAxNF0gRURBQyBNQzI6IEdpdmluZyBvdXQgZGV2aWNlIHRvIG1vZHVs ZSBza3hfZWRhYyBjb250cm9sbGVyIFNreWxha2UgU29ja2V0IzEgSU1DIzAKPiAuLi4KPiBbIDM0 MDEuOTg3MzE4XSBFREFDIE1DMTM6IEdpdmluZyBvdXQgZGV2aWNlIHRvIG1vZHVsZSBza3hfZWRh YyBjb250cm9sbGVyIFNreWxha2UgU29ja2V0IzAgSU1DIzEKPiBbIDM0MDEuOTg3NDM1XSBFREFD IE1DMTQ6IEdpdmluZyBvdXQgZGV2aWNlIHRvIG1vZHVsZSBza3hfZWRhYyBjb250cm9sbGVyIFNr eWxha2UgU29ja2V0IzEgSU1DIzAKPiBbIDM0MDEuOTg3NTU2XSBFREFDIE1DMTU6IEdpdmluZyBv dXQgZGV2aWNlIHRvIG1vZHVsZSBza3hfZWRhYyBjb250cm9sbGVyIFNreWxha2UgU29ja2V0IzEg SU1DIzEKPiBbIDM0MDEuOTg3NTc5XSBUb28gbWFueSBtZW1vcnkgY29udHJvbGxlcnM6IDE2Cj4g WyAzNDAyLjA0MjYxNF0gRURBQyBNQzogUmVtb3ZlZCBkZXZpY2UgMCBmb3Igc2t4X2VkYWMgU2t5 bGFrZSBTb2NrZXQjMCBJTUMjMAo+IAo+IFdlIG9ic2VydmUgdGhlcmUgYXJlIHR3byBtZW1vcnkg Y29udHJvbGxlcnMgcGVyIHNvY2tldCwgd2l0aCBhIGxpbWl0IG9mIDE2Lgo+IFJhaXNlIHRoZSBt YXhpbXVtIG51bWJlciBvZiBtZW1vcnkgY29udHJvbGxlcnMgZnJvbSAxNiB0byAyICogTUFYX05V TU5PREVTICgxMDI0KS4KClRvbnksCgpjYW4gd2UgcmVhZCB0aGF0IG91dCBmcm9tIHRoZSBoYXJk d2FyZSBpbnN0ZWFkIG9mIGhhdmluZyB0aGlzIHNpbGx5CnN0YXRpYyBudW1iZXI/CgpMZWF2aW5n IGluIHRoZSByZXN0LgoKPiBDYzogQm9yaXNsYXYgUGV0a292IDxicEBhbGllbjguZGU+Cj4gQ2M6 IE1hdXJvIENhcnZhbGhvIENoZWhhYiA8bWNoZWhhYkBrZXJuZWwub3JnPgo+IENjOiBsaW51eC1l ZGFjQHZnZXIua2VybmVsLm9yZwo+IENjOiBsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnCj4g QWNrZWQtYnk6IFJ1c3MgQW5kZXJzb24gPHJ1c3MuYW5kZXJzb25AaHBlLmNvbT4KPiBTaWduZWQt b2ZmLWJ5OiBKdXN0aW4gRXJuc3QgPGp1c3Rpbi5lcm5zdEBocGUuY29tPgo+IC0tLQo+ICBpbmNs dWRlL2xpbnV4L2VkYWMuaCB8IDMgKystCj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMo KyksIDEgZGVsZXRpb24oLSkKPiAKPiBkaWZmIC0tZ2l0IGEvaW5jbHVkZS9saW51eC9lZGFjLmgg Yi9pbmNsdWRlL2xpbnV4L2VkYWMuaAo+IGluZGV4IGJmZmI5NzgyOGVkNi4uOTU4ZDY5MzMyYzFk IDEwMDY0NAo+IC0tLSBhL2luY2x1ZGUvbGludXgvZWRhYy5oCj4gKysrIGIvaW5jbHVkZS9saW51 eC9lZGFjLmgKPiBAQCAtMTcsNiArMTcsNyBAQAo+ICAjaW5jbHVkZSA8bGludXgvY29tcGxldGlv bi5oPgo+ICAjaW5jbHVkZSA8bGludXgvd29ya3F1ZXVlLmg+Cj4gICNpbmNsdWRlIDxsaW51eC9k ZWJ1Z2ZzLmg+Cj4gKyNpbmNsdWRlIDxsaW51eC9udW1hLmg+Cj4gIAo+ICAjZGVmaW5lIEVEQUNf REVWSUNFX05BTUVfTEVOCTMxCj4gIAo+IEBAIC02NzAsNiArNjcxLDYgQEAgc3RydWN0IG1lbV9j dGxfaW5mbyB7Cj4gIC8qCj4gICAqIE1heGltdW0gbnVtYmVyIG9mIG1lbW9yeSBjb250cm9sbGVy cyBpbiB0aGUgY29oZXJlbnQgZmFicmljLgo+ICAgKi8KPiAtI2RlZmluZSBFREFDX01BWF9NQ1MJ MTYKPiArI2RlZmluZSBFREFDX01BWF9NQ1MJMiAqIE1BWF9OVU1OT0RFUwo+ICAKPiAgI2VuZGlm Cj4gLS0gCj4gMi4xMi4zCj4K 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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, 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 1F888C43382 for ; 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Tue, 25 Sep 2018 17:26:55 +0200 (CEST) Date: Tue, 25 Sep 2018 17:26:59 +0200 From: Borislav Petkov To: Tony Luck Cc: Justin Ernst , russ.anderson@hpe.com, Mauro Carvalho Chehab , linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Raise maximum number of memory controllers Message-ID: <20180925152659.GE23986@zn.tnic> References: <20180925143449.284634-1-justin.ernst@hpe.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20180925143449.284634-1-justin.ernst@hpe.com> 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 Tue, Sep 25, 2018 at 09:34:49AM -0500, Justin Ernst wrote: > We observe an oops in the skx_edac module during boot. > Examining /var/log/messages: > [ 3401.985757] EDAC MC0: Giving out device to module skx_edac controller Skylake Socket#0 IMC#0 > [ 3401.985887] EDAC MC1: Giving out device to module skx_edac controller Skylake Socket#0 IMC#1 > [ 3401.986014] EDAC MC2: Giving out device to module skx_edac controller Skylake Socket#1 IMC#0 > ... > [ 3401.987318] EDAC MC13: Giving out device to module skx_edac controller Skylake Socket#0 IMC#1 > [ 3401.987435] EDAC MC14: Giving out device to module skx_edac controller Skylake Socket#1 IMC#0 > [ 3401.987556] EDAC MC15: Giving out device to module skx_edac controller Skylake Socket#1 IMC#1 > [ 3401.987579] Too many memory controllers: 16 > [ 3402.042614] EDAC MC: Removed device 0 for skx_edac Skylake Socket#0 IMC#0 > > We observe there are two memory controllers per socket, with a limit of 16. > Raise the maximum number of memory controllers from 16 to 2 * MAX_NUMNODES (1024). Tony, can we read that out from the hardware instead of having this silly static number? Leaving in the rest. > Cc: Borislav Petkov > Cc: Mauro Carvalho Chehab > Cc: linux-edac@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Acked-by: Russ Anderson > Signed-off-by: Justin Ernst > --- > include/linux/edac.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/linux/edac.h b/include/linux/edac.h > index bffb97828ed6..958d69332c1d 100644 > --- a/include/linux/edac.h > +++ b/include/linux/edac.h > @@ -17,6 +17,7 @@ > #include > #include > #include > +#include > > #define EDAC_DEVICE_NAME_LEN 31 > > @@ -670,6 +671,6 @@ struct mem_ctl_info { > /* > * Maximum number of memory controllers in the coherent fabric. > */ > -#define EDAC_MAX_MCS 16 > +#define EDAC_MAX_MCS 2 * MAX_NUMNODES > > #endif > -- > 2.12.3 > -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.