Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757082Ab1DGDSw (ORCPT ); Wed, 6 Apr 2011 23:18:52 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:39802 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752858Ab1DGDSv convert rfc822-to-8bit (ORCPT ); Wed, 6 Apr 2011 23:18:51 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=dn89SVBKhZDai3XN9xzqEiKPojf2aZuqtbLRisdhjmufkZQZ5gPklmkNYbWRsF8UYA 36pzAn+u6BjnaImRSNFjlwG/TlWvcv5y9y7kMZvLXNluADd+PNbWcVEXatM3Y2fT/H4I zCkl924TQCqd9QJqKhPff438qEI4DzCkvKYUE= MIME-Version: 1.0 In-Reply-To: <20110407001658.GW12642@redhat.com> References: <20110406223036.GA15721@digium.com> <20110407001658.GW12642@redhat.com> Date: Thu, 7 Apr 2011 07:18:50 +0400 X-Google-Sender-Auth: rHpOS7MycNV_guMh2WCXhipTBwc Message-ID: Subject: Re: [regression 2.6.39-rc2][bisected] "perf, x86: P4 PMU - Read proper MSR register to catch" and NMIs From: Cyrill Gorcunov To: Don Zickus Cc: Shaun Ruffell , "linux-kernel@vger.kernel.org" , Cyrill Gorcunov , Ingo Molnar Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1102 Lines: 27 On Thursday, April 7, 2011, Don Zickus wrote: > On Wed, Apr 06, 2011 at 05:30:36PM -0500, Shaun Ruffell wrote: >> Hello Don, >> >> I was able to bisect it down to commit 242214f9c1eeaae40, but I'm not >> certain where to go from here. ?Is this something that is already known >> or is there more information I should try to collect? > > Nope, this is an ongoing issue. ?What happened was the perf P4 nmi handler > was swallowing all the NMIs. ?My patch fixed that and exposed a double NMI > problem. ?We have been chasing it for a couple of months. ?I think Cyril > was finally able to duplicate it (as he wrote the P4 code). ?I have > confidence that he will find a fix for it soon. :-) > > Thanks for the report though! > > Cheers, > Don > Hi, yeah, i got it too and i hope to fix this issue soon. Will ping as only get working fix. -- 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/