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=-8.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 2D235C433DB for ; Fri, 5 Feb 2021 21:10:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDB2464FB1 for ; Fri, 5 Feb 2021 21:10:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233758AbhBEVJz (ORCPT ); Fri, 5 Feb 2021 16:09:55 -0500 Received: from mga14.intel.com ([192.55.52.115]:28055 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233604AbhBETMJ (ORCPT ); Fri, 5 Feb 2021 14:12:09 -0500 IronPort-SDR: gsWqV96ITRrZ22HcE7cu5owf2BZw2GEwf52zOTQHpPDMO0KuwHy/RD8zI7uBHwQmfnIjby3uZK yTLJuQ+Rz06w== X-IronPort-AV: E=McAfee;i="6000,8403,9886"; a="180711254" X-IronPort-AV: E=Sophos;i="5.81,156,1610438400"; d="scan'208";a="180711254" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2021 12:52:50 -0800 IronPort-SDR: lgHN/v12VV3ovvexLRsvsJwgV5WcoPPRk/SWeAg19Gounw59TTqQPAi/r+KPaoedYJwVtngGUe n0vPu0AO2Giw== X-IronPort-AV: E=Sophos;i="5.81,156,1610438400"; d="scan'208";a="394010888" Received: from tassilo.jf.intel.com ([10.54.74.11]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2021 12:52:49 -0800 Date: Fri, 5 Feb 2021 12:52:47 -0800 From: Andi Kleen To: Jim Mattson Cc: linux-kernel@vger.kernel.org, x86@kernel.org, kvm@vger.kernel.org, pbonzini@redhat.com, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Borislav Petkov , "H. Peter Anvin" Subject: Re: [PATCH RESEND] perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[] Message-ID: <20210205205247.GF27611@tassilo.jf.intel.com> References: <20210205191324.2889006-1-jmattson@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210205191324.2889006-1-jmattson@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 05, 2021 at 11:13:24AM -0800, Jim Mattson wrote: > Cascade Lake Xeon parts have the same model number as Skylake Xeon > parts, so they are tagged with the intel_pebs_isolation > quirk. However, as with Skylake Xeon H0 stepping parts, the PEBS > isolation issue is fixed in all microcode versions. > > Add the Cascade Lake Xeon steppings (5, 6, and 7) to the > isolation_ucodes[] table so that these parts benefit from Andi's > optimization in commit 9b545c04abd4f ("perf/x86/kvm: Avoid unnecessary > work in guest filtering"). Reviewed-by: Andi Kleen -Andi