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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 EA8BCC10F13 for ; Tue, 16 Apr 2019 13:55:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE67521B26 for ; Tue, 16 Apr 2019 13:55:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="H5qrsVbO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729479AbfDPNzP (ORCPT ); Tue, 16 Apr 2019 09:55:15 -0400 Received: from mail.skyhub.de ([5.9.137.197]:56458 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727030AbfDPNzO (ORCPT ); Tue, 16 Apr 2019 09:55:14 -0400 Received: from zn.tnic (p200300EC2F0D690030B3A6530520175E.dip0.t-ipconnect.de [IPv6:2003:ec:2f0d:6900:30b3:a653:520:175e]) (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 AC4101EC014A; Tue, 16 Apr 2019 15:55:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1555422912; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=weQ1um983B4tDqVgPttRiVEupzuuaq5L/v9Mw9TnCIA=; b=H5qrsVbOlygyI8wNeR/EC4Ys5dXaO4SkG192cRNYrrUsQIwBuYRKByMOy1+uM5rDLfkmMW 5iz/nGHZNr4aB3XiB4GVasq3ROa0Su1+WniA2jpcS3S7IezKzbsndlZvqUQdDMUQRpyh/6 589LvEhkAqoBcd+JCtGirzojLuiRgL4= Date: Tue, 16 Apr 2019 15:55:09 +0200 From: Borislav Petkov To: "Ghannam, Yazen" Cc: "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "tony.luck@intel.com" , "x86@kernel.org" Subject: Re: [PATCH v2 4/6] x86/MCE: Make number of MCA banks per_cpu Message-ID: <20190416135508.GG31772@zn.tnic> References: <20190411201743.43195-1-Yazen.Ghannam@amd.com> <20190411201743.43195-5-Yazen.Ghannam@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190411201743.43195-5-Yazen.Ghannam@amd.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 Thu, Apr 11, 2019 at 08:18:03PM +0000, Ghannam, Yazen wrote: > @@ -1478,15 +1480,16 @@ EXPORT_SYMBOL_GPL(mce_notify_irq); > > static int __mcheck_cpu_mce_banks_init(void) > { > + u8 n_banks = this_cpu_read(mce_num_banks); > int i; > > per_cpu(mce_banks, smp_processor_id()) = > - kcalloc(MAX_NR_BANKS, sizeof(struct mce_bank), GFP_KERNEL); > + kcalloc(n_banks, sizeof(struct mce_bank), GFP_KERNEL); > > if (!this_cpu_read(mce_banks)) > return -ENOMEM; > > - for (i = 0; i < MAX_NR_BANKS; i++) { > + for (i = 0; i < n_banks; i++) { > struct mce_bank *b = &this_cpu_read(mce_banks)[i]; > > b->ctl = -1ULL; > @@ -1507,10 +1510,15 @@ static int __mcheck_cpu_cap_init(void) > rdmsrl(MSR_IA32_MCG_CAP, cap); > > b = cap & MCG_BANKCNT_MASK; > - if (WARN_ON_ONCE(b > MAX_NR_BANKS)) > + pr_debug("CPU%d supports %d MCE banks\n", smp_processor_id(), b); What for? You're removing the "Using" message because, yeah, it was worthless to people. If anyone wants to count the banks: $ ls /sys/devices/system/machinecheck/machinecheck0/bank* | wc -l 23 -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.