Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp3642319pxj; Tue, 11 May 2021 08:45:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwCYIfSelzG7Vybpv73B+LsXfMFcUZX+iHqjnBM8FsfK/VVLCts+XKKlOd5FKEzksXDe6HS X-Received: by 2002:a17:906:f56:: with SMTP id h22mr32417258ejj.366.1620747944149; Tue, 11 May 2021 08:45:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1620747944; cv=none; d=google.com; s=arc-20160816; b=Hlavlm0Gz/WlBz7873POVqhpGMXEPBSwVde1xT3HCazg9FvG8/AL5AmiuR/j3QYKQO y/ATpIapNhgRhtbeeyj+wD8oyypJZjglH0kT5x3i9lYE3xXNIrrUSIEVbspjV/A9Vt7L H2kg2TO+4Y4wNJolNjIujg2wlRDRCEfMNAA+EnWL5p6AAKwVtKaVggwCZNKvTrBT+ctN k0/g7+vjqJvjd6+2NgakJsWrYSNEpmqUgRksdom6R3cgXSqD82KVa9wkdt80vbbrzL07 2z7KIU1P17r94gGuEIDF+cycjP5R4GY6cRrj7HqFkVvPyO5jmdWo+vEOf+2/H60iyYg5 q2Mw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-language:content-transfer-encoding :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:ironport-sdr:ironport-sdr; bh=wxXgBazAAqsdLLaarh+Bq6ClOZShYK57R3G+zxa36W0=; b=liVxRbEdH678ErhYcuMwlqujV5KbALpym1n5h4bSStw1C4nJ3q7qH+oRm1YHNEkwjz BJu/Pko6Oau/WJCk6DNPNLF+VP9KPGDjifAjyXoe+1euGcOXJAsh3/Jo7xr0pDfBZTPv jQVJawSP/reVn1kzzbY+zbdGdCwvent5zaYF9pKsc1TIq5215NUiWShrp0HlKOe9kfu5 T4bpRscxfMp7uL5esNb6KBXi1PRIDN/jgpPDg6C1BEDlzdmfr5orR34+1oXlwHWs+KiP 2wbmweXH8FAlLJRTeUq4pUnaTYNHCDYFB9NmLTRK0WgwE4oxoRyYi1v9YSk3vDGIbVUU pHRA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id bs19si16511908ejb.238.2021.05.11.08.45.18; Tue, 11 May 2021 08:45:44 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231852AbhEKPny (ORCPT + 99 others); Tue, 11 May 2021 11:43:54 -0400 Received: from mga17.intel.com ([192.55.52.151]:18632 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231851AbhEKPnx (ORCPT ); Tue, 11 May 2021 11:43:53 -0400 IronPort-SDR: OrpArYHUy97RlCm3sphoN8YW2P6A1lL4AZMaOYtxhIPUSSdBYDRyMAGaHA79NLuEtreh6BD0ED oc6rbSLE5DVg== X-IronPort-AV: E=McAfee;i="6200,9189,9981"; a="179736627" X-IronPort-AV: E=Sophos;i="5.82,291,1613462400"; d="scan'208";a="179736627" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2021 08:42:46 -0700 IronPort-SDR: K2SCQfHgEmPmRA7D2fYVmLD3IzbIz5C1AYPo1rmfpYZlfvqmDge5ZUrWyD++URsoqaV6svMU7u N9SjR7qWARmA== X-IronPort-AV: E=Sophos;i="5.82,291,1613462400"; d="scan'208";a="434606478" Received: from akleen-mobl1.amr.corp.intel.com (HELO [10.212.131.161]) ([10.212.131.161]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2021 08:42:45 -0700 Subject: Re: [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD To: Dan Williams Cc: Kuppuswamy Sathyanarayanan , Peter Zijlstra , Andy Lutomirski , Dave Hansen , Tony Luck , Kirill Shutemov , Kuppuswamy Sathyanarayanan , Raj Ashok , Sean Christopherson , Linux Kernel Mailing List References: <0e577692-101e-38f7-ebe2-2e7222016a9f@linux.intel.com> From: Andi Kleen Message-ID: Date: Tue, 11 May 2021 08:42:44 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/11/2021 8:37 AM, Dan Williams wrote: > O > Why not just drop the patch if it continues to cause people to spend > cycles on it and it addresses a problem that will never happen? We want to at least get some kind of warning if there is really a mistake. Just dropping such an ability wouldn't seem right. That's all that the patch does really. -Andi