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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2687C433FE for ; Thu, 4 Nov 2021 14:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8705D61246 for ; Thu, 4 Nov 2021 14:40:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231395AbhKDOna (ORCPT ); Thu, 4 Nov 2021 10:43:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231129AbhKDOnZ (ORCPT ); Thu, 4 Nov 2021 10:43:25 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35068C061714 for ; Thu, 4 Nov 2021 07:40:47 -0700 (PDT) Received: from zn.tnic (p200300ec2f0f2b00bdd517953c60a78f.dip0.t-ipconnect.de [IPv6:2003:ec:2f0f:2b00:bdd5:1795:3c60:a78f]) (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 BE3061EC0575; Thu, 4 Nov 2021 15:40:45 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1636036845; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=X2rlQuLOr/R9H1i3NP5YOWXFRReBbgZZyfEqTJiKSAQ=; b=Mem8YRtwi4SeIRLzD3M72EhSJdysJXQ7cOSGSp3dKrptCCfqYGn65c7y4iGzq9grp/D0Tw avQdwHm6GSjuwE/YSfdRkbRpRvmalSQmw9jAmMbLCdeERWkkJZwbjDLiKUuQ/zhRKQHol2 sze4Mi2TRbOLyWPpIUfgwSMPWkCViFw= From: Borislav Petkov To: Tony Luck Cc: X86 ML , LKML Subject: [PATCH v0 01/12] x86/mce: Do not use memset to clear the banks bitmaps Date: Thu, 4 Nov 2021 15:40:24 +0100 Message-Id: <20211104144035.20107-2-bp@alien8.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20211104144035.20107-1-bp@alien8.de> References: <20211104144035.20107-1-bp@alien8.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov The bitmap is a single unsigned long so no need for the function call. No functional changes. Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/mce/core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 6ed365337a3b..52d277c955f9 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1340,8 +1340,8 @@ static noinstr void unexpected_machine_check(struct pt_regs *regs) noinstr void do_machine_check(struct pt_regs *regs) { int worst = 0, order, no_way_out, kill_current_task, lmce; - DECLARE_BITMAP(valid_banks, MAX_NR_BANKS); - DECLARE_BITMAP(toclear, MAX_NR_BANKS); + DECLARE_BITMAP(valid_banks, MAX_NR_BANKS) = { 0 }; + DECLARE_BITMAP(toclear, MAX_NR_BANKS) = { 0 }; struct mca_config *cfg = &mca_cfg; struct mce m, *final; char *msg = NULL; @@ -1385,7 +1385,6 @@ noinstr void do_machine_check(struct pt_regs *regs) final = this_cpu_ptr(&mces_seen); *final = m; - memset(valid_banks, 0, sizeof(valid_banks)); no_way_out = mce_no_way_out(&m, &msg, valid_banks, regs); barrier(); -- 2.29.2