Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754538Ab2FMWeP (ORCPT ); Wed, 13 Jun 2012 18:34:15 -0400 Received: from mga01.intel.com ([192.55.52.88]:21051 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750732Ab2FMWeO (ORCPT ); Wed, 13 Jun 2012 18:34:14 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="165345161" From: Andi Kleen To: Peter Zijlstra Cc: x86@kernel.org, linux-kernel@vger.kernel.org, eranian@google.com Subject: Re: [PATCH 3/4] perf, x86: check ucode before disabling PEBS on SandyBridge v3 References: <1339618842-26636-1-git-send-email-andi@firstfloor.org> <1339618842-26636-4-git-send-email-andi@firstfloor.org> <1339623054.8980.64.camel@twins> <20120613213451.GC32604@tassilo.jf.intel.com> <1339623417.8980.68.camel@twins> Date: Wed, 13 Jun 2012 15:34:13 -0700 In-Reply-To: <1339623417.8980.68.camel@twins> (Peter Zijlstra's message of "Wed, 13 Jun 2012 23:36:57 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 736 Lines: 20 Peter Zijlstra writes: > > Is there a ucode revision for C2 higher than 0x618 but lower than > 0x70c ? If so, your code is wrong for it would enable PEBS on that chip. I was told there's only a single revision per model number that goes up. That's also the model that other microcode checks in Linux follow. Not sure what's happening with Stephane's setup. I get 0x618 on Stepping 6. I'll try to find a C2. -Andi -- ak@linux.intel.com -- Speaking for myself only -- 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/