Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp2128648ybb; Thu, 2 Apr 2020 13:44:35 -0700 (PDT) X-Google-Smtp-Source: APiQypLZ+xwTiO2LHKqqglkVaSgdUQSHL5nvGMHIHiVerPUOl/fkJNMlD9Sv8/T25TQlC7FjX5CW X-Received: by 2002:a9d:7f19:: with SMTP id j25mr3986958otq.129.1585860275049; Thu, 02 Apr 2020 13:44:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1585860275; cv=none; d=google.com; s=arc-20160816; b=PyjiEQDr0MLywUevXzo4qW7aqguPYj/tl1DD0MXjgNXG/AvWGmM74Oqe1nN7yDYjLS m4iuX2GsOOC1oy7ZDZR5ZK3nQ5wbrZ07ffQUaH8Ph7faT8oC4GSMln+SHMVkE9ZNQYCI gLo8yF5jiXugu3qn202OnjYI9/ahkXAHLX6FNgDAZEBqueTuo3R6DafH4cujIxRlQGCz 1Zb9xqA2Oxmpef9/squdLtvMLDlC5nOf8im0atFLpDJT97gBeO3EUvSNthG0wqfkZWd6 YpwT3dm+0WvcBeHY2MoAQjk3+DwFBRSgB+PSqT99+8ef4gGJWZol1kkuKj7oQocxB47K Pqew== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-id:content-language:accept-language:in-reply-to:references :message-id:date:thread-index:cc:to:from:thread-topic:subject :ironport-sdr:dkim-signature; bh=/AMe5jtWvL4jnCf4DQWrkvz+agPOIGzaDNZ89UTBJo0=; b=bQhzfHkxAzYUB7Kw+ZFTFLIo01IEc+7gdXcGCu8XSrIadmTPM/ZADEBiar3JY+15rM xxA1oyPql2PNKfjab0/uvgZa+XfY2ml0G9yi/Rc5ZNYpTmg49hUMBFiNM5BeDANhi40n i3HYfpUHsD/kdjzfB8g11fueQxLFJOkD9iu7Lt+jzZzK5/pbDDUHNFHGLNbhKhA08waY jXrvZDFctF3pRmq/W0bABX8pIwUSDD+PJFoa068vpX/oR9hSAYKSULno9X3exseBHtME pdei7zu/6BVWeYfqDZNl7vLCHAd6Gw41pxP3XEzGeou4mEe8Pnb57DJmnLVghv/QiGWe dzow== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=DfcbS0Ec; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c125si2878334ooc.50.2020.04.02.13.44.22; Thu, 02 Apr 2020 13:44:35 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=DfcbS0Ec; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733252AbgDBUfy (ORCPT + 99 others); Thu, 2 Apr 2020 16:35:54 -0400 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]:24686 "EHLO smtp-fw-33001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729549AbgDBUfy (ORCPT ); Thu, 2 Apr 2020 16:35:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1585859753; x=1617395753; h=from:to:cc:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version:subject; bh=/AMe5jtWvL4jnCf4DQWrkvz+agPOIGzaDNZ89UTBJo0=; b=DfcbS0Ec3Z/c1TxDJ49bfczSgFsABQzp6es9c3Yp8cWhmjmtVn5lrawx ahgB6vqe7Y4OvQ6yirOVkoP2U52lUQTXaQt/stfHjfHHDByPHL/cVdeHY GeNUdrraGoJc3IP1o3sf70VoUBhbnCR+NXdvvaadGBGYiswlvmdvpqqfF Y=; IronPort-SDR: kpS8uj1f1Ls8HuyFfoJ0Bw2Di3PD7hbv2msHR46lCFkUsSmlEqmo7Dtnz7RPkorXNxRasyuiWL Xx0HmnUjbe0A== X-IronPort-AV: E=Sophos;i="5.72,336,1580774400"; d="scan'208";a="36371078" Subject: Re: [PATCH 0/3] arch/x86: Optionally flush L1D on context switch Thread-Topic: [PATCH 0/3] arch/x86: Optionally flush L1D on context switch Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1a-715bee71.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP; 02 Apr 2020 20:35:50 +0000 Received: from EX13MTAUWB001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1a-715bee71.us-east-1.amazon.com (Postfix) with ESMTPS id 6A282A30EB; Thu, 2 Apr 2020 20:35:47 +0000 (UTC) Received: from EX13D01UWB004.ant.amazon.com (10.43.161.157) by EX13MTAUWB001.ant.amazon.com (10.43.161.207) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 2 Apr 2020 20:35:46 +0000 Received: from EX13D01UWB002.ant.amazon.com (10.43.161.136) by EX13d01UWB004.ant.amazon.com (10.43.161.157) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 2 Apr 2020 20:35:46 +0000 Received: from EX13D01UWB002.ant.amazon.com ([10.43.161.136]) by EX13d01UWB002.ant.amazon.com ([10.43.161.136]) with mapi id 15.00.1497.006; Thu, 2 Apr 2020 20:35:46 +0000 From: "Singh, Balbir" To: "jpoimboe@redhat.com" CC: "tglx@linutronix.de" , "linux-kernel@vger.kernel.org" , "tony.luck@intel.com" , "keescook@chromium.org" , "benh@kernel.crashing.org" , "x86@kernel.org" , "dave.hansen@intel.com" Thread-Index: AQHWCLef4bwaosvK0kiEVSQik6PTPKhmROgAgAAGOQA= Date: Thu, 2 Apr 2020 20:35:46 +0000 Message-ID: <31c9720eff18ce167378e9a0017dcd73e0552164.camel@amazon.com> References: <20200402062401.29856-1-sblbir@amazon.com> <20200402201328.zqnxwaetpk4ubg56@treble> In-Reply-To: <20200402201328.zqnxwaetpk4ubg56@treble> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.43.160.65] Content-Type: text/plain; charset="utf-8" Content-ID: <686FB9B2CCB0D6428F002ABED8171883@amazon.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gVGh1LCAyMDIwLTA0LTAyIGF0IDE1OjEzIC0wNTAwLCBKb3NoIFBvaW1ib2V1ZiB3cm90ZToN Cj4gQ0FVVElPTjogVGhpcyBlbWFpbCBvcmlnaW5hdGVkIGZyb20gb3V0c2lkZSBvZiB0aGUgb3Jn YW5pemF0aW9uLiBEbyBub3QNCj4gY2xpY2sgbGlua3Mgb3Igb3BlbiBhdHRhY2htZW50cyB1bmxl c3MgeW91IGNhbiBjb25maXJtIHRoZSBzZW5kZXIgYW5kIGtub3cNCj4gdGhlIGNvbnRlbnQgaXMg c2FmZS4NCj4gDQo+IA0KPiANCj4gT24gVGh1LCBBcHIgMDIsIDIwMjAgYXQgMDU6MjM6NThQTSAr MTEwMCwgQmFsYmlyIFNpbmdoIHdyb3RlOg0KPiA+IFByb3ZpZGUgYSBtZWNoYW5pc24gdG8gZmx1 c2ggdGhlIEwxRCBjYWNoZSBvbiBjb250ZXh0IHN3aXRjaC4gIFRoZSBnb2FsDQo+ID4gaXMgdG8g YWxsb3cgdGFza3MgdGhhdCBhcmUgcGFyYW5vaWQgZHVlIHRvIHRoZSByZWNlbnQgc25vb3AgYXNz aXN0ZWQgZGF0YQ0KPiA+IHNhbXBsaW5nIHZ1bG5lcmFiaWxpdGVzLCB0byBmbHVzaCB0aGVpciBM MUQgb24gYmVpbmcgc3dpdGNoZWQgb3V0Lg0KPiANCj4gSGkgQmFsYmlyLA0KPiANCj4gSnVzdCBj dXJpb3VzLCBpcyBpdCByZWFsbHkgdnVsbmVyYWJpbGl0aWVzLCBwbHVyYWw/ICBJIHRob3VnaHQg dGhlcmUgd2FzDQo+IG9ubHkgb25lOiBDVkUtMjAyMC0wNTUwIChTbm9vcC1hc3Npc3RlZCBMMSBE YXRhIFNhbXBsaW5nKS4NCj4gDQo+IChUaGVyZSB3YXMgYSBzaW1pbGFyIG9uZSB3aXRob3V0IHRo ZSAic25vb3AiOiBMMUQgRXZpY3Rpb24gU2FtcGxpbmcsIGJ1dA0KPiBpdCdzIHN1cHBvc2VkIHRv IGdldCBmaXhlZCBpbiBtaWNyb2NvZGUpLg0KPiANCg0KSGksIEpvc2gNCg0KWWVzLCB0aGF0IENW RSB0aGUgbW90aXZhdGlvbiwgdGhlIG1pdGlnYXRpb24gZm9yIENWRS0yMDIwLTA1NTAgZG9lcyBz dWdnZXN0DQpmbHVzaGluZyB0aGUgY2FjaGUgb24gY29udGV4dCBzd2l0Y2guIEJ1dCBpbiBnZW5l cmFsLCBhcyB3ZSBiZWdpbiB0byBmaW5kIG1vcmUNCndheXMgb2YgZXZpY3RpbmcgZGF0YSBvciBz bm9wcGluZyBkYXRhLCBhIGdlbmVyaWMgbWVjaGFuaXNtIGlzIG1vcmUgdXNlZnVsIGFuZA0KdGhh dCBpcyB3aHkgSSBhbSBtYWtpbmcgaXQgYW4gb3B0LWluLg0KDQpCYWxiaXIgU2luZ2guDQo=