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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,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 ED672C4360F for ; Wed, 3 Apr 2019 12:24:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B186820643 for ; Wed, 3 Apr 2019 12:24:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=maine.edu header.i=@maine.edu header.b="UuYxKhpy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726193AbfDCMYA (ORCPT ); Wed, 3 Apr 2019 08:24:00 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:40943 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726064AbfDCMX7 (ORCPT ); Wed, 3 Apr 2019 08:23:59 -0400 Received: by mail-qt1-f195.google.com with SMTP id x12so19185142qts.7 for ; Wed, 03 Apr 2019 05:23:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=maine.edu; s=google; h=from:date:to:cc:subject:in-reply-to:message-id:references :user-agent:mime-version; bh=msxtIHAtJz4OY5Sv8/Ja7X44EEFN0Z54zKL8t5s+a1A=; b=UuYxKhpyzwNXizySpmvdMrgOGMuu+8jYEU3E4FzENoIsoEYOZoVz100zTI2besjFKa W2D+rzw2OcLaWStcOgorwbS6sztHvPezDZrrq7gJ2nFqSewNYCY1V9LsQW4vbjlK5nnp fVZLAH4O6uf7LZ2+zbqtNYShEdiGS3oInzW/4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:in-reply-to:message-id :references:user-agent:mime-version; bh=msxtIHAtJz4OY5Sv8/Ja7X44EEFN0Z54zKL8t5s+a1A=; b=PpLCZVWNC9LTMgPJ/CPggAxDLuA9xYM7YaNgAkLQdDYSGmAYxGokzb4Okh+C+3nmD0 O5MdLeYnokNvZ87O0iFQ6BFT9auQpttabYAsaDQ7Bp2KM8F7Vup/FFQ5L5S9jhr2jFi5 URwIA/FeIRrOTIZZ9VvJBy1AmGc631Sh0YW/v5T3n3t2mHEaDAIApmJR71SVSkfHSB2j Rw8iGR3pwQBEABIjC1JRRmc44LJ/buEe6TWX/xPAwgEN9KxsXR3JPZJLHllGvmOwUzQC 4c6N192lwyBGVp5a6e32tXFSNhFJ6QGbX5ULRsaIOTqo+DU4omuAQfwyqqqW99pxFRBV pDjg== X-Gm-Message-State: APjAAAWKOs+nPGiVVJtN1Ulc2QGvay0CWqvSsDA4Y5TsCYRMSVJhFbL2 Aiigz931FHZZ03pLwhFQZA7nug== X-Google-Smtp-Source: APXvYqyqNvmtb6PJRvTNthZo3Avx9Soy5BGJOj63KReQJj9m6VSyefDcK/b3rPrYZGf8mv+GyDPl9g== X-Received: by 2002:a0c:b8aa:: with SMTP id y42mr61217214qvf.66.1554294238476; Wed, 03 Apr 2019 05:23:58 -0700 (PDT) Received: from macbook-air (weaver.eece.maine.edu. [130.111.218.23]) by smtp.gmail.com with ESMTPSA id b37sm13576985qtb.92.2019.04.03.05.23.56 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 03 Apr 2019 05:23:57 -0700 (PDT) From: Vince Weaver X-Google-Original-From: Vince Weaver Date: Wed, 3 Apr 2019 08:23:52 -0400 (EDT) X-X-Sender: vince@macbook-air To: Thomas Gleixner cc: nelson.dsouza@intel.com, jolsa@redhat.com, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, peterz@infradead.org, vincent.weaver@maine.edu, eranian@google.com, hpa@zytor.com, mingo@kernel.org, torvalds@linux-foundation.org, acme@redhat.com, linux-tip-commits@vger.kernel.org Subject: Re: [tip:perf/urgent] perf/x86/intel: Initialize TFA MSR In-Reply-To: Message-ID: References: <20190321123849.GN6521@hirez.programming.kicks-ass.net> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 3 Apr 2019, Thomas Gleixner wrote: > On Wed, 3 Apr 2019, tip-bot for Peter Zijlstra wrote: > > > Commit-ID: d7262457e35dbe239659e62654e56f8ddb814bed > > Gitweb: https://git.kernel.org/tip/d7262457e35dbe239659e62654e56f8ddb814bed > > Author: Peter Zijlstra > > AuthorDate: Thu, 21 Mar 2019 13:38:49 +0100 > > Committer: Ingo Molnar > > CommitDate: Wed, 3 Apr 2019 11:40:32 +0200 > > > > perf/x86/intel: Initialize TFA MSR > > > > Stephane reported that the TFA MSR is not initialized by the kernel, > > but the TFA bit could set by firmware or as a leftover from a kexec, > > which makes the state inconsistent. > > > > Reported-by: Stephane Eranian > > Tested-by: Nelson DSouza > > Signed-off-by: Peter Zijlstra (Intel) > > Cc: Alexander Shishkin > > Cc: Arnaldo Carvalho de Melo > > Cc: Jiri Olsa > > Cc: Linus Torvalds > > Cc: Peter Zijlstra > > Cc: Thomas Gleixner > > Cc: Vince Weaver > > Cc: tonyj@suse.com > > Link: https://lkml.kernel.org/r/20190321123849.GN6521@hirez.programming.kicks-ass.net > > Signed-off-by: Ingo Molnar > > This lacks: > > 1) Fixes tag > > 2) Cc: stable .... > > Sigh. It would also be nice to know what a "TFA" bit is without having to go find a copy of the Intel documentation. Vince