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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B075FECAAA7 for ; Mon, 29 Aug 2022 18:10:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229989AbiH2SKq (ORCPT ); Mon, 29 Aug 2022 14:10:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229530AbiH2SKn (ORCPT ); Mon, 29 Aug 2022 14:10:43 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEBB57392D for ; Mon, 29 Aug 2022 11:10:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1661796641; x=1693332641; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=w3FQog0TbfF6FSRjBPM0YwFMbUuW2xTLlJneCsIaVC0=; b=d2D+MfBbMiT6uMXXiUJE9l82pWBzQRkfQjzZrBiyo9SI5Z77aNo1c7Ot UQnE4ok6vFR1BNoq45YPnVgXtKIrPEjupcwG8uWvU7DPvJyX4/2QQlgtO wALnQZ2zjwMPivTwe2ff+nfDduVqgpHYNnuQA5PgxLuFEXWy3cyx+IUg5 ojXuSdCdopjtrF4jSmVhPg3genP7ulm+Jf1soIAYPznCCqsk/rADmZnSn ZSWBrO/k8GJVWWiiP1WB/xfGlg4ksF9zm48vt1w+bewytITWPukudy00/ LyXOsmEj+Gxrz47FGKkPzWoemi347U0NJcLS6OHjqzlG5ehwGNC/7hKZn g==; X-IronPort-AV: E=McAfee;i="6500,9779,10454"; a="296241565" X-IronPort-AV: E=Sophos;i="5.93,273,1654585200"; d="scan'208";a="296241565" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Aug 2022 11:10:41 -0700 X-IronPort-AV: E=Sophos;i="5.93,273,1654585200"; d="scan'208";a="562325638" Received: from araj-dh-work.jf.intel.com ([10.165.157.158]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Aug 2022 11:10:36 -0700 From: Ashok Raj To: Borislav Petkov , Thomas Gleixner Cc: "LKML Mailing List" , X86-kernel , Dave Hansen , Andy Lutomirski , Ingo Molnar , "Ashok Raj" , Tom Lendacky , Tony Luck Subject: [PATCH] x86/microcode: Print previous version of microcode after reload Date: Mon, 29 Aug 2022 18:10:30 +0000 Message-Id: <20220829181030.722891-1-ashok.raj@intel.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It will be useful to print both old and new versions of microcode after a reload is complete. Signed-off-by: Ashok Raj --- arch/x86/kernel/cpu/microcode/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index ad57e0e4d674..6a41cee242f6 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -491,7 +491,7 @@ static int __reload_late(void *info) */ static int microcode_reload_late(void) { - int ret; + int old = boot_cpu_data.microcode, ret; pr_err("Attempting late microcode loading - it is dangerous and taints the kernel.\n"); pr_err("You should switch to early loading, if possible.\n"); @@ -503,7 +503,8 @@ static int microcode_reload_late(void) if (ret == 0) microcode_check(); - pr_info("Reload completed, microcode revision: 0x%x\n", boot_cpu_data.microcode); + pr_info("Reload completed, microcode revision: 0x%x -> 0x%x\n", + old, boot_cpu_data.microcode); return ret; } -- 2.32.0