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=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 66752C072B1 for ; Thu, 30 May 2019 04:06:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E22A25071 for ; Thu, 30 May 2019 04:06:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559189187; bh=xNydASI18Rj2zLvBaJytxcUwe6gFezTCWCARsuFWbys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=l5YKvMF1/iNPPVlLKi81KoWSuIGaGMPIyeHlg8zby/+EMSq7phzvP6SzMcVAL1zv/ dYjaNDI0Aa2nyLKG6ofzWyGHyDX7GX0QkgbL0gwDbYD4Dq4/2K6HDOsISPDs2NTQzW n26VVApbuk7rnUK3whWhf19A25rNbcpruliiwbdU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726985AbfE3EGW (ORCPT ); Thu, 30 May 2019 00:06:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:47798 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731173AbfE3DRf (ORCPT ); Wed, 29 May 2019 23:17:35 -0400 Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0458D246EE; Thu, 30 May 2019 03:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559186255; bh=xNydASI18Rj2zLvBaJytxcUwe6gFezTCWCARsuFWbys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rx43P8SqF9Czn9kYPEX5u0IrTVeMmLWayk1ETrTcFBma+YOQ3wUgPcQo4/PDGLR1c zgJ9gE17jp/XeQbcukueJOnXIirTB2p1Ijkis5r3GthKYYQ7qnd5E0K/vITMKHEIXP MYdkXj1ZEhTCFQ6nbw2AP1E0d2OP0FKrtitdBnBQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Borislav Petkov , Thomas Gleixner , Jann Horn , Sasha Levin Subject: [PATCH 4.19 174/276] x86/microcode: Fix the ancient deprecated microcode loading method Date: Wed, 29 May 2019 20:05:32 -0700 Message-Id: <20190530030536.226687991@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030523.133519668@linuxfoundation.org> References: <20190530030523.133519668@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 24613a04ad1c0588c10f4b5403ca60a73d164051 ] Commit 2613f36ed965 ("x86/microcode: Attempt late loading only when new microcode is present") added the new define UCODE_NEW to denote that an update should happen only when newer microcode (than installed on the system) has been found. But it missed adjusting that for the old /dev/cpu/microcode loading interface. Fix it. Fixes: 2613f36ed965 ("x86/microcode: Attempt late loading only when new microcode is present") Signed-off-by: Borislav Petkov Reviewed-by: Thomas Gleixner Cc: Jann Horn Link: https://lkml.kernel.org/r/20190405133010.24249-3-bp@alien8.de Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/microcode/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index b9bc8a1a584e3..b43ddefd77f45 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -418,8 +418,9 @@ static int do_microcode_update(const void __user *buf, size_t size) if (ustate == UCODE_ERROR) { error = -1; break; - } else if (ustate == UCODE_OK) + } else if (ustate == UCODE_NEW) { apply_microcode_on_target(cpu); + } } return error; -- 2.20.1