From patchwork Thu Oct 15 14:45:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Borislav Petkov X-Patchwork-Id: 11839463 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF2BB61C for ; Thu, 15 Oct 2020 14:46:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9868D22268 for ; Thu, 15 Oct 2020 14:46:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="PsR5+v0Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388685AbgJOOqp (ORCPT ); Thu, 15 Oct 2020 10:46:45 -0400 Received: from mail.skyhub.de ([5.9.137.197]:48138 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388305AbgJOOqR (ORCPT ); Thu, 15 Oct 2020 10:46:17 -0400 Received: from zn.tnic (p200300ec2f0ed2005c4d90d75300802a.dip0.t-ipconnect.de [IPv6:2003:ec:2f0e:d200:5c4d:90d7:5300:802a]) (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 4CBCD1EC0328; Thu, 15 Oct 2020 16:46:16 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1602773176; 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: references; bh=rpunifJ24jwRTZS2TIiqk+YVW7s/WrEZ0ErJ6Xjz+kk=; b=PsR5+v0QW6IRQyCgmP8YtQlaL/SmzuwT8hmSisd/dUW41yOTWs8mwj+R1VF6JT/MfiwbcS K/ZgmuoYcIxH89Y4Wg7x6P7vZ4OT2Dx2nbr8EmiSYaHWhbT61CpGLhbhtzoQyZdqzbce1k cWEizykX+SN1q/GTgbsaYvh/lQ1RzMQ= From: Borislav Petkov To: X86 ML Cc: Thomas Renninger , Shuah Khan , Len Brown , linux-pm@vger.kernel.org, LKML Subject: [PATCH 0/4] x86: Remove direct use of MSR_IA32_ENERGY_PERF_BIAS Date: Thu, 15 Oct 2020 16:45:59 +0200 Message-Id: <20201015144603.27933-1-bp@alien8.de> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Borislav Petkov Hi all, here's something from my todo list: remove all in-kernel tools use of that MSR and lastly drop it from the allowed-MSRs-list in the filtering. Out-of-tree tools should do a similar, trivial conversion. Constructive comments are, as always, appreciated. Thx. Borislav Petkov (4): tools/power/cpupower: Read energy_perf_bias from sysfs tools/power/turbostat: Read energy_perf_bias from sysfs tools/power/x86_energy_perf_policy: Read energy_perf_bias from sysfs x86/msr: Do not allow writes to MSR_IA32_ENERGY_PERF_BIAS arch/x86/kernel/msr.c | 3 - tools/power/cpupower/lib/cpupower.c | 23 +++- tools/power/cpupower/lib/cpupower_intern.h | 5 + tools/power/cpupower/utils/cpupower-info.c | 2 +- tools/power/cpupower/utils/cpupower-set.c | 2 +- tools/power/cpupower/utils/helpers/helpers.h | 8 +- tools/power/cpupower/utils/helpers/misc.c | 48 ++++++++ tools/power/cpupower/utils/helpers/msr.c | 28 ----- tools/power/x86/turbostat/turbostat.c | 29 ++++- .../x86_energy_perf_policy.c | 109 ++++++++++++++++-- 10 files changed, 204 insertions(+), 53 deletions(-)