Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753211AbbEHL3b (ORCPT ); Fri, 8 May 2015 07:29:31 -0400 Received: from casper.infradead.org ([85.118.1.10]:37510 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752818AbbEHL30 (ORCPT ); Fri, 8 May 2015 07:29:26 -0400 Date: Fri, 8 May 2015 13:29:12 +0200 From: Peter Zijlstra To: Andi Kleen Cc: Kan Liang , mingo@kernel.org, acme@infradead.org, eranian@google.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH V8 3/8] perf, x86: handle multiple records in PEBS buffer Message-ID: <20150508112912.GF27504@twins.programming.kicks-ass.net> References: <1430940834-8964-1-git-send-email-kan.liang@intel.com> <1430940834-8964-4-git-send-email-kan.liang@intel.com> <20150508110547.GS2366@two.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150508110547.GS2366@two.firstfloor.org> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 642 Lines: 13 On Fri, May 08, 2015 at 01:05:47PM +0200, Andi Kleen wrote: > > The first issue is that the 'status' field of the PEBS record is a copy > > of the GLOBAL_STATUS MSR at PEBS assist time. To see why this is a > > I wanted to mention that Skylake has this issue fixed. The status > field in PEBS is now only the counter that triggered the PEBS record. Yes, just read the latest SDM on this, great! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/