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=-14.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 D2045C63777 for ; Mon, 16 Nov 2020 20:09:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76F4420702 for ; Mon, 16 Nov 2020 20:09:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="fU4LQPnw"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="pl0EjPgv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731716AbgKPUIb (ORCPT ); Mon, 16 Nov 2020 15:08:31 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:43338 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729459AbgKPUIa (ORCPT ); Mon, 16 Nov 2020 15:08:30 -0500 Date: Mon, 16 Nov 2020 20:08:27 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1605557308; h=from:from:sender:sender:reply-to: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=np68QpS74WRZwzXnueJuSt4qob2qXsd/YJ/hEUqDJBw=; b=fU4LQPnw503NIF+fsts6CliwvYBVLn8qee0epIK/3R7Y2qO561vaqLjh+wmo2bxLMoEvwj tkUp4gb3NNJU3I/Cqp1FhKXVve3zx4rizS3X5624JyqNf/xBdFzPgw7AbmPv+yFccFtgXq hHmD/optMiYJamU9Im9c8lpmdzqIVGZ0jh2G9pe5ltCs8rHzkbAuqQgFD7ZYBofUDyS5nT yS/HZ67ZMsY8P1srTq0IjSv1Ed4bxduSJSeEEhhhrcn4pxtszvIOzfGQwGB2GywhL/ODH8 xy6pF8rCiIKR+dwPMzkRxQeB0neUMFlRU8x1+4714los/Z1ecE3XkDcFlxE2KQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1605557308; h=from:from:sender:sender:reply-to: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=np68QpS74WRZwzXnueJuSt4qob2qXsd/YJ/hEUqDJBw=; b=pl0EjPgvr5zFow1fnY77XQSacxaz8qiYIXIR/CgzwyS1nNpGMBvhJ7Ws78GAboLSsAPenx 7mkK0ATad+DKzaAQ== From: "tip-bot2 for Borislav Petkov" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/misc] x86/msr: Do not allow writes to MSR_IA32_ENERGY_PERF_BIAS Cc: Borislav Petkov , Shuah Khan , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20201029190259.3476-5-bp@alien8.de> References: <20201029190259.3476-5-bp@alien8.de> MIME-Version: 1.0 Message-ID: <160555730711.11244.5287578166367187235.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/misc branch of tip: Commit-ID: 18741a5251d018094536a2dffe284d269ebb07fe Gitweb: https://git.kernel.org/tip/18741a5251d018094536a2dffe284d269ebb07fe Author: Borislav Petkov AuthorDate: Thu, 15 Oct 2020 15:00:31 +02:00 Committer: Borislav Petkov CommitterDate: Mon, 16 Nov 2020 17:44:04 +01:00 x86/msr: Do not allow writes to MSR_IA32_ENERGY_PERF_BIAS Now that all in-kernel-tree users are converted to using the sysfs file, remove the MSR from the "allowlist". Signed-off-by: Borislav Petkov Reviewed-by: Shuah Khan Link: https://lkml.kernel.org/r/20201029190259.3476-5-bp@alien8.de --- arch/x86/kernel/msr.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index c0d4098..b114786 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -99,9 +99,6 @@ static int filter_write(u32 reg) if (!__ratelimit(&fw_rs)) return 0; - if (reg == MSR_IA32_ENERGY_PERF_BIAS) - return 0; - pr_err("Write to unrecognized MSR 0x%x by %s (pid: %d). Please report to x86@kernel.org.\n", reg, current->comm, current->pid);