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=-1.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,UPPERCASE_50_75, 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 CA823C282CB for ; Mon, 4 Feb 2019 15:44:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B5A42082E for ; Mon, 4 Feb 2019 15:44:22 +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="1rjelOz0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731406AbfBDPoV (ORCPT ); Mon, 4 Feb 2019 10:44:21 -0500 Received: from merlin.infradead.org ([205.233.59.134]:37068 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731353AbfBDPoU (ORCPT ); Mon, 4 Feb 2019 10:44:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.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=Nz64tbSXt8gpJy5Ya6dENktKCqV+ItLtmt4Bt8Avfk8=; b=1rjelOz0WdEmoQ8icu1gxf9Am SgSnMVWktbsiNq0CbnAJt5akiMWtn7YgUVXGhNFT3vnDckprEwc1nd8fKxN3O1eqAPHONA2Qicnre dmRmu2mjvbeDai/bkC2CRsss03iErO9dxoqBToGQyjdMokeWGP76fTnrT2uvwqmhkpjwAYUf2S0K1 NINuc6pi1yWfObO3fS17UoqPATxy2uS5nBGbM+EvkHttISPmat/nU0sNdmnDYYVoxP9S5zCu1Osx3 CN8FHyWrTzFXZHRpUGObEm7v7OOwNPnJA2tOyA9zY6i2dGn1uPjpVp5nsv0k6BRLsD73AYg3M1SS4 8K+1kwuCA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gqgPt-0000Qo-59; Mon, 04 Feb 2019 15:44:13 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id EBB31202A2A0F; Mon, 4 Feb 2019 16:44:11 +0100 (CET) Date: Mon, 4 Feb 2019 16:44:11 +0100 From: Peter Zijlstra To: kan.liang@linux.intel.com Cc: x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, bp@alien8.de, mingo@redhat.com, ak@linux.intel.com, eranian@google.com Subject: Re: [PATCH V6 2/5] perf/x86/kvm: Avoid unnecessary work in guest filtering Message-ID: <20190204154411.GC17582@hirez.programming.kicks-ass.net> References: <1548106951-4811-1-git-send-email-kan.liang@linux.intel.com> <1548106951-4811-2-git-send-email-kan.liang@linux.intel.com> <20190204153827.GG17528@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190204153827.GG17528@hirez.programming.kicks-ass.net> 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 Mon, Feb 04, 2019 at 04:38:27PM +0100, Peter Zijlstra wrote: > +static const struct x86_cpu_desc isolation_ucodes[] = { > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_MOBILE, 9, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_MOBILE, 10, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_MOBILE, 11, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_MOBILE, 12, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_DESKTOP, 10, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_DESKTOP, 11, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_DESKTOP, 12, 0x0000004e), > + INTEL_CPU_DESC(INTEL_FAM6_KABYLAKE_DESKTOP, 13, 0x0000004e), Do we want a special stepping (0 / -1) to be able to denote 'all' ?