Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp2202010ybb; Thu, 2 Apr 2020 15:25:08 -0700 (PDT) X-Google-Smtp-Source: APiQypIu63Nfqv9eJXxUNLtmBgkZ7sGtm45Pin+T4SJbqSKIwgw6eDjAUT2Ot+3n73yPCFuqRXc+ X-Received: by 2002:a05:6830:101a:: with SMTP id a26mr3932492otp.173.1585866308059; Thu, 02 Apr 2020 15:25:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1585866308; cv=none; d=google.com; s=arc-20160816; b=GfRf0QKNg9UMiVJpBP1bddziHwf4brMu4VAgk+Ojx22N9PsaGy2aopN4kyiocA266h yjU5T9zf8ADS+d7pTNxdP9PxPDFwCeWSZJsLD3l+g5weW5d2pvtx9gL5bE9ptg2aKemK IpY0lRc3U82e4fHbVv11mI/Q3/HR1j5bKKW7sexUF5RDWDm68UYtXpHCmJ7rVpkpl/Uw oiYhSQEQ3QZuMO8EGPRRGuLGwM1Q2gRR3xGY2ryAxaerTnB77J/c+4CZ8PRQSTk/lk+c GDR40eqC3wy5M1ctEVFkoBjP/Dth2kx55FkXX5lF+KsvI2CevOM3/Ao14gHU7MP2maH6 oLSA== 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=M/fTHiiTfTqWAYDRfIup3tvNO526R1ZSWUN4QpIFN68=; b=tbhOlPPmHGq5tR8yALZcMNX0nc4/rk8VpMg/JFKE20qXbUmmDdFhaAufRJ1k7Se5OJ OMEfbV0p7sCAJ7E7Bxc5bz8TnVhSNs5m9WPASSXekKwEYg20H0c9vbXOshkGdEJKRUTQ r2ZI7QIvEpqxoEQ/tTvmCtNjUUiBtDEphjS9HzZz0syJJ2iwStRWPIubdrlyOGfKlIsL Saf4GVXoadM4iS0bGN2LbOXKTIPb86k1U6eLeCEqcwfQgf3nalbIATAwjXpiQnXHMcMZ WextDAy3KrN3CrHf/ZM9ayjy5Y0F4MXtbqmNFCA9f1JqSKvfkKwYJI91HJq1aHnmmCCB znfQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=TEG4Lp1U; 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 d27si2427435ote.88.2020.04.02.15.24.53; Thu, 02 Apr 2020 15:25:08 -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=TEG4Lp1U; 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 S2389588AbgDBWYG (ORCPT + 99 others); Thu, 2 Apr 2020 18:24:06 -0400 Received: from smtp-fw-6002.amazon.com ([52.95.49.90]:19154 "EHLO smtp-fw-6002.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726963AbgDBWYG (ORCPT ); Thu, 2 Apr 2020 18:24:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1585866246; x=1617402246; h=from:to:cc:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version:subject; bh=M/fTHiiTfTqWAYDRfIup3tvNO526R1ZSWUN4QpIFN68=; b=TEG4Lp1UiLN2XNXpCtkOrYGTX3TAfBc9o2qKo8vif/QIOuXGFD6DpWWz 74fclfBx3v284H+IKdU6FwO4CgGR65kMPQMIg29uR6FRgoj6pusZtdujH ClpN+E95iSyW8qMML5/u8XB7aPMSWr5p3Hrp/8bciaEiUmN49nymSCaoE Y=; IronPort-SDR: CNp7QJexbmMmslgKbUccPTyyFqhl1WLPv4UA9skLgqkA8lkpkviQnda+3aVsHgzNcWV5R8wXvb W1EYbMoXm1mg== X-IronPort-AV: E=Sophos;i="5.72,337,1580774400"; d="scan'208";a="23907680" 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 iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-1d-37fd6b3d.us-east-1.amazon.com) ([10.43.8.6]) by smtp-border-fw-out-6002.iad6.amazon.com with ESMTP; 02 Apr 2020 22:23:54 +0000 Received: from EX13MTAUWB001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1d-37fd6b3d.us-east-1.amazon.com (Postfix) with ESMTPS id 0E2C028833F; Thu, 2 Apr 2020 22:23:51 +0000 (UTC) Received: from EX13D01UWB002.ant.amazon.com (10.43.161.136) by EX13MTAUWB001.ant.amazon.com (10.43.161.207) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 2 Apr 2020 22:23:50 +0000 Received: from EX13D01UWB002.ant.amazon.com (10.43.161.136) by EX13d01UWB002.ant.amazon.com (10.43.161.136) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 2 Apr 2020 22:23:50 +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 22:23:50 +0000 From: "Singh, Balbir" To: "tglx@linutronix.de" , "jpoimboe@redhat.com" CC: "keescook@chromium.org" , "linux-kernel@vger.kernel.org" , "tony.luck@intel.com" , "benh@kernel.crashing.org" , "x86@kernel.org" , "dave.hansen@intel.com" Thread-Index: AQHWCLef4bwaosvK0kiEVSQik6PTPKhmROgAgAAGOQCAAANggIAAD/uAgAAK1AA= Date: Thu, 2 Apr 2020 22:23:50 +0000 Message-ID: References: <20200402062401.29856-1-sblbir@amazon.com> <20200402201328.zqnxwaetpk4ubg56@treble> <31c9720eff18ce167378e9a0017dcd73e0552164.camel@amazon.com> <20200402204749.33ulub5jx66dktxg@treble> <875zehmujm.fsf@nanos.tec.linutronix.de> In-Reply-To: <875zehmujm.fsf@nanos.tec.linutronix.de> 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: [10.43.160.90] Content-Type: text/plain; charset="utf-8" Content-ID: <21808619CF4E2D45A69E6BD493A42BCC@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 T24gVGh1LCAyMDIwLTA0LTAyIGF0IDIzOjQ1ICswMjAwLCBUaG9tYXMgR2xlaXhuZXIgd3JvdGU6 DQo+IENBVVRJT046IFRoaXMgZW1haWwgb3JpZ2luYXRlZCBmcm9tIG91dHNpZGUgb2YgdGhlIG9y Z2FuaXphdGlvbi4gRG8gbm90DQo+IGNsaWNrIGxpbmtzIG9yIG9wZW4gYXR0YWNobWVudHMgdW5s ZXNzIHlvdSBjYW4gY29uZmlybSB0aGUgc2VuZGVyIGFuZCBrbm93DQo+IHRoZSBjb250ZW50IGlz IHNhZmUuDQo+IA0KPiANCj4gDQo+IEpvc2ggUG9pbWJvZXVmIDxqcG9pbWJvZUByZWRoYXQuY29t PiB3cml0ZXM6DQo+ID4gT24gVGh1LCBBcHIgMDIsIDIwMjAgYXQgMDg6MzU6NDZQTSArMDAwMCwg U2luZ2gsIEJhbGJpciB3cm90ZToNCj4gPiA+IFllcywgdGhhdCBDVkUgdGhlIG1vdGl2YXRpb24s IHRoZSBtaXRpZ2F0aW9uIGZvciBDVkUtMjAyMC0wNTUwIGRvZXMNCj4gPiA+IHN1Z2dlc3QNCj4g PiA+IGZsdXNoaW5nIHRoZSBjYWNoZSBvbiBjb250ZXh0IHN3aXRjaC4gQnV0IGluIGdlbmVyYWws IGFzIHdlIGJlZ2luIHRvDQo+ID4gPiBmaW5kIG1vcmUNCj4gPiA+IHdheXMgb2YgZXZpY3Rpbmcg ZGF0YSBvciBzbm9wcGluZyBkYXRhLCBhIGdlbmVyaWMgbWVjaGFuaXNtIGlzIG1vcmUNCj4gPiA+ IHVzZWZ1bCBhbmQNCj4gPiA+IHRoYXQgaXMgd2h5IEkgYW0gbWFraW5nIGl0IGFuIG9wdC1pbi4N Cj4gPiANCj4gPiBPay4gIEkgdGhpbmsgaXQgd291bGQgYmUgYSBnb29kIGlkZWEgdG8gZXhwYW5k IG9uIHRoYXQganVzdGlmaWNhdGlvbg0KPiA+IG1vcmUgcHJlY2lzZWx5IGluIHRoZSBjb21taXQg bWVzc2FnZS4gIFRoYXQgd291bGQgaGVscCBib3RoIHJldmlld2VycyBvZg0KPiA+IHRoZSBjb2Rl IGFuZCB1c2VycyBvZiB0aGUgbmV3IG9wdGlvbiB1bmRlcnN0YW5kIHdoYXQgbGV2ZWwgb2YgcGFy YW5vaWENCj4gPiB0aGV5J3JlIG9wdGluZyBpbiB0byA6LSkNCj4gDQo+IFRoZSBjb21taXQgbWVz c2FnZSBpcyBtb3N0bHkgdXNlZnVsIGZvciByZXZpZXdlcnMgYW5kIHBlb3BsZSB3aG8gaGF2ZSB0 bw0KPiBkbyBjb2RlIGFyY2hlYW9sb2d5Lg0KPiANCj4gRG9jdW1lbnRhdGlvbi9hZG1pbi1ndWlk ZS9ody12dWxuLyBoYXMgcGxlbnR5IG9mIHNwYWNlIHRvIGhvc3QgYQ0KPiBkb2N1bWVudCB3aXRo IGV4cGxhbmF0aW9ucy4gcGFyYW5vaWEucnN0IGNvbWVzIHRvIG15IG1pbmQuIDopDQoNCkkgaG9w ZSBwZW9wbGUgZG9uJ3QgZ28gbG9va2luZyBmb3IgYWxpZW5zIGluIHRoZXJlIDopIEknbGwgd3Jp dGUgdXAgc29tZQ0KZG9jdW1lbnRhdGlvbiBpZiB0aGF0IGhlbHBzLCBzdGFydGluZyB3aXRoIHNv bWV0aGluZyBzaW1wbGUuDQoNCkJhbGJpcg0KDQo+IA0KPiBUaGFua3MsDQo+IA0KPiAgICAgICAg IHRnbHgNCj4gDQo=