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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 2A419C43381 for ; Thu, 21 Mar 2019 20:07:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E64BF218A5 for ; Thu, 21 Mar 2019 20:07:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="o2bvrNzy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728659AbfCUUHJ (ORCPT ); Thu, 21 Mar 2019 16:07:09 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:37656 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728093AbfCUUHJ (ORCPT ); Thu, 21 Mar 2019 16:07:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=3o8rNNR79KjbvJW9ZxtTG+6dKrElMem/IZjqCz79qTA=; b=o2bvrNzy2fHPR5oH5bGdlW3Ra DXqtFsHmLFthb4J/kYFs1ndtxMTJlHPeMGZNY5OLMwnyltbDU5iuE7hYfHIkQa6ov4x/kdF520Mek c52mrahXr/y/4prwUWOeKqnIE45LDuxpp/BrypWpJ0Df7OJ+zps1LB+eNDL0lts182UZqJKp23+ze KdMUkqIIXqKwKGkdoepAkpjQ7i5/XR3yysS7zwqvFuGM3XbD5o/qNNiHX8BL3vRaAKrc0G3u555qu RrZnh7wnnKc8TXkoqC3FhUMoPvhG0iwYQr2wHeSqvJ5RxKFtbY/xsEOUHVknD+pgA76/QWTyt6akR iEkRYv7tg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1h73xu-0004yF-DD; Thu, 21 Mar 2019 20:07:02 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 6900A984EEA; Thu, 21 Mar 2019 21:07:00 +0100 (CET) Date: Thu, 21 Mar 2019 21:07:00 +0100 From: Peter Zijlstra To: "DSouza, Nelson" Cc: Tony Jones , Thomas Gleixner , Stephane Eranian , Ingo Molnar , Jiri Olsa , LKML Subject: Re: [PATCH 1/8] perf/x86/intel: Fix memory corruption Message-ID: <20190321200700.GD2490@worktop.programming.kicks-ass.net> References: <20190319182041.GO5996@hirez.programming.kicks-ass.net> <20190320222220.GA2490@worktop.programming.kicks-ass.net> <20190321123849.GN6521@hirez.programming.kicks-ass.net> <20190321171047.GR5996@hirez.programming.kicks-ass.net> <20190321182011.GT5996@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 21, 2019 at 07:47:50PM +0000, DSouza, Nelson wrote: > Is the request to check whether the msr gets reset to default upon reboot of the machine ? basically: - apply patch - start workload with 4 counter (on all CPUs), such that tfa-msr=1 - try the following: o cpu hotplug o kexec to see if the new WARN will trigger -- it should not.