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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 62904C43387 for ; Wed, 9 Jan 2019 12:14:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2EA23206BB for ; Wed, 9 Jan 2019 12:14:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="OfTCfQOl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730756AbfAIMOz (ORCPT ); Wed, 9 Jan 2019 07:14:55 -0500 Received: from mail.skyhub.de ([5.9.137.197]:38328 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730734AbfAIMOy (ORCPT ); Wed, 9 Jan 2019 07:14:54 -0500 Received: from zn.tnic (p200300EC2BEA1000E56F05EB9FFDE1E7.dip0.t-ipconnect.de [IPv6:2003:ec:2bea:1000:e56f:5eb:9ffd:e1e7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 80E501EC072C; Wed, 9 Jan 2019 13:14:53 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1547036093; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=NCylCB+Zci1N3EZZ2Gu5Vhpnbf+/VuasVuh9mkjJNMA=; b=OfTCfQOl0ssH7VNtaZ+n1zTtFTQ3Feyw9joyGYL/xyria1ecQn2FGRDa+v8FmeMNKJHldF Vf1+TmnOQoTnJEwlvb4bBLy3yPHMUJeKQMsJcoRkLcWKp4m/NecqNHcUva+fmkPruJxDOX rx/1wrIQBw7PDVFx5cb/2qlasHwNYCY= Date: Wed, 9 Jan 2019 13:14:45 +0100 From: Borislav Petkov To: Vitaly Kuznetsov Cc: Reinette Chatre , Babu Moger , x86@kernel.org, linux-kernel@vger.kernel.org, Fenghua Yu , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Jan =?utf-8?Q?H=2E_Sch=C3=B6nherr?= , David Duncan Subject: Re: [PATCH] x86/intel_rdt: use rdmsr_safe() to workaround AWS host issue Message-ID: <20190109121445.GC15665@zn.tnic> References: <20181220134046.7916-1-vkuznets@redhat.com> <20181220161722.GD31403@zn.tnic> <51dcb13a-4751-47f5-1e01-f6731a2c6f3c@intel.com> <20521afe-09af-7acf-6f32-3f6e9a971091@intel.com> <20190109113915.GB15665@zn.tnic> <87bm4qoww4.fsf@vitty.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <87bm4qoww4.fsf@vitty.brq.redhat.com> 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 Wed, Jan 09, 2019 at 01:09:31PM +0100, Vitaly Kuznetsov wrote: > Hm, why is that? In theory, hypervisors can pass through or emulate the > required MSRs... ...and when the theory becomes reality we'll remove the check. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.