Received: by 2002:a25:ad19:0:0:0:0:0 with SMTP id y25csp7934399ybi; Mon, 22 Jul 2019 23:47:25 -0700 (PDT) X-Google-Smtp-Source: APXvYqw+DYQg3/mouoIDQbWE9hWDPddWV3vCfOkMjtf03w+FKsKvs6Sl0vwNP6T92Ybe7Lc1lRls X-Received: by 2002:a17:902:54d:: with SMTP id 71mr77423549plf.140.1563864445401; Mon, 22 Jul 2019 23:47:25 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1563864445; cv=pass; d=google.com; s=arc-20160816; b=UNz/bQdiaMaWFNF6gzqk62aN5uaIXpUeDfi38q1OWhssfZJv4qY1NUQH9msOxZJdhX os1+CFoVqi3THVCPRY2nNm0rw80ex5JTD8sk/FXpW1EK27/3H6i3X9QM7aqjZOvhHtvd wA/kKxDEj1IJW/bJ5qTYtGU811hztD87xuT84TDOPXwZ9+iUIiHnnDwJV4y6LM+rc9/l dspXBQFqiueJxlGT981+y4mlU7eEoC6fqzcAJLYZL7Xgc1kf0T/Ahm5k5XceIvPNOuuU 76OPb3rGWTOd6AYnW2FUW5pJu5TErV22MM2nk5C2pkrMsunrVBG4mVuWJMG2Y+kPO+OC gJrw== ARC-Message-Signature: i=2; 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:thread-topic:subject:cc:to:from :dkim-signature; bh=8mCowyNd03zlCl6BHOR2vZ4QHbPAVX+x8wP5gGxNEYg=; b=1B0hmo7I6swaxunK+hZcf3aJHCdUG+zT4RUsIZDz8gDfPjV7NxVvjpd1AsdR1jPHtm lBSUR2TnIIn62a0eyCLDeTUZJC95yIa7ABzXTYEkkS2xClJbpg2tAQewJh0fmnrH+CzS bq9YxVM4hINxnYzsmQXwGPzqR7bsAhjAerYAqLs846qkdmTGOOnnXJRGsK++4Ss/BrGT 8FyHO8EFlqD4ISX+zVonLQqPrOqJbGefeuc0siqQ2nzRhYe/2iJElKjoNY664BROQrNH cBJXOrXW7fPHG0XcvIImFmigLRMLejIsCs/7X206dFCBBa4hVcjNvbgKWhTf+xyeORpa Hgtw== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@vmware.com header.s=selector2 header.b=jIClnpG6; arc=pass (i=1 spf=pass spfdomain=vmware.com dkim=pass dkdomain=vmware.com dmarc=pass fromdomain=vmware.com); 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=NONE dis=NONE) header.from=vmware.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 5si10963841plx.200.2019.07.22.23.47.09; Mon, 22 Jul 2019 23:47:25 -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=@vmware.com header.s=selector2 header.b=jIClnpG6; arc=pass (i=1 spf=pass spfdomain=vmware.com dkim=pass dkdomain=vmware.com dmarc=pass fromdomain=vmware.com); 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=NONE dis=NONE) header.from=vmware.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731134AbfGVVUx (ORCPT + 99 others); Mon, 22 Jul 2019 17:20:53 -0400 Received: from mail-eopbgr780045.outbound.protection.outlook.com ([40.107.78.45]:38816 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728441AbfGVVUw (ORCPT ); Mon, 22 Jul 2019 17:20:52 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HE9G/G5HsihVHizAiDEWHLMV7Rxm+zFZCLYM6/XknYg+lV5bMztrjU4moFo/EsMHHIiMRcEKMbAjjclPyoYUEamEQ0IK1n5BTLkcjBFCifBqOt2IGmbOwd7FBmnQc6djKH0QvxZI+QU2JjdRd4yuk2AtSRSsnpS8Vvewq5d37tUzQpiDRzlEY3ubgkSVFBI3wpHe3xJaCtdiRHyxoUtwM0KnL9biw/qhiWSqOqK9CEG3uO7PTiJNY/AbuveMPbEe9EwgfxGXUF55GVRb6Gi4tJI2gixWK4TELhJmJXS5kG6D1PYsfN5WCsx971F7UwEKaybFEIEzcKMfOyM6NByLnQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8mCowyNd03zlCl6BHOR2vZ4QHbPAVX+x8wP5gGxNEYg=; b=Hf84zEjpD3chfpCmdi/xywaFwMzxXh1QFI7mcwLeNJc9NTW6sT3U+55DizJFQHGtcYXM1K2xDnsrizge4skSReTO0JvbcR2KArj7NQgFioDkyyN48+K4ipoo+w4tpUjEANT9Hgc7ZfbjSMceVDOoesY5lGcQd9L6Z+9EsIP22Ag/XkG8FqHL5wmIeEj52fG62N4855Nj478lNdBisC1u9KLN/ZpCMNMV3noj2mHt071+xLrYrcIob9NdfmiV3XuX3rO+9vbTa2EnNHoL+1eRH3cDikSyz3zbUFHpQA9uWCTGA4xAkSus1amUyoa+zjM6zM36pdaFXrUEKWffBMbP5A== ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass smtp.mailfrom=vmware.com;dmarc=pass action=none header.from=vmware.com;dkim=pass header.d=vmware.com;arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vmware.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8mCowyNd03zlCl6BHOR2vZ4QHbPAVX+x8wP5gGxNEYg=; b=jIClnpG6g2I9P+RMKacRP9521I81Lmz+6eg9yKIaudZDsJIbbCXYbALAjBDwbPUHU6Q2LWNTWzOfc1jDXVrZs2E5OWfgTqIoqNYhquZl8To4821df651ZBDB5VB0ozzdn8YmvjWcs6/K7URQV3aHoXZyX4NCWerKdPOj74s+9dg= Received: from BYAPR05MB4776.namprd05.prod.outlook.com (52.135.233.146) by BYAPR05MB6296.namprd05.prod.outlook.com (20.178.51.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2115.8; Mon, 22 Jul 2019 21:20:46 +0000 Received: from BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::e00b:cb41:8ed6:b718]) by BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::e00b:cb41:8ed6:b718%2]) with mapi id 15.20.2115.005; Mon, 22 Jul 2019 21:20:46 +0000 From: Nadav Amit To: Peter Zijlstra CC: Andy Lutomirski , the arch/x86 maintainers , LKML , Dave Hansen , Thomas Gleixner , Ingo Molnar Subject: Re: [RFC 7/7] x86/current: Aggressive caching of current Thread-Topic: [RFC 7/7] x86/current: Aggressive caching of current Thread-Index: AQHVPc3icdeutwj3P0Cy0fu3DYyqBqbXJzcAgAAD0oA= Date: Mon, 22 Jul 2019 21:20:46 +0000 Message-ID: <9D1835AD-AB52-4B01-B783-67CB27CFEA9D@vmware.com> References: <20190718174110.4635-1-namit@vmware.com> <20190718174110.4635-8-namit@vmware.com> <20190722210704.GL6698@worktop.programming.kicks-ass.net> In-Reply-To: <20190722210704.GL6698@worktop.programming.kicks-ass.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=namit@vmware.com; x-originating-ip: [66.170.99.2] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: d4c6538a-aece-472e-f50a-08d70eea7667 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:BYAPR05MB6296; x-ms-traffictypediagnostic: BYAPR05MB6296: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7691; x-forefront-prvs: 01068D0A20 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(39860400002)(136003)(376002)(346002)(366004)(396003)(189003)(199004)(6116002)(3846002)(7736002)(305945005)(54906003)(66476007)(81166006)(8676002)(36756003)(66556008)(64756008)(66446008)(66946007)(76116006)(256004)(76176011)(71190400001)(8936002)(5660300002)(86362001)(81156014)(26005)(4326008)(71200400001)(66066001)(99286004)(6246003)(102836004)(11346002)(6512007)(2906002)(68736007)(25786009)(6486002)(2616005)(476003)(6916009)(6506007)(478600001)(53546011)(229853002)(14454004)(53936002)(316002)(446003)(33656002)(6436002)(486006)(186003);DIR:OUT;SFP:1101;SCL:1;SRVR:BYAPR05MB6296;H:BYAPR05MB4776.namprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: vmware.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: NDcUow80DqlFxLhP/1eC6DMMcZpn5XAuafmcYeOrfBp4wzpBUNUhxpjrCONrqEgnBecWMczb8RMyJIFRvDIFKi0fTKrMw4vPm2WLTU4TNoq1LZ2RwRc/34IfowcKxkXm6zu2NUo1Bgle/xI8qDa7LzjcyOcChD1AFL2JyU9rZwadIZQjRpDiflxePsQMGdsM25JOg5rSGcSpgqHCSOCCtGuzL7UfMwJZQU+3WC6ypVK5wIdVHwJkEQJvwUQFn6e0ysjKHxTIhE5JmhVR7szpS1XG+UjkE6EuhBYO+sUq4P+eKrJbwOo1B7GyGg2DzgSr7tmeomV64qcrqdymAysJAE1ETgwoswmqpbDA2KcgSBkNpvopr0KkGY5AsZfe5fctvf+2Ox0yCXhmmmYcbn3m9P4RXu9p3rPMxk003wrqh4A= Content-Type: text/plain; charset="utf-8" Content-ID: <45819626B6928D4EA0BBC854CB148F12@namprd05.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: vmware.com X-MS-Exchange-CrossTenant-Network-Message-Id: d4c6538a-aece-472e-f50a-08d70eea7667 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Jul 2019 21:20:46.6415 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b39138ca-3cee-4b4a-a4d6-cd83d9dd62f0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: namit@vmware.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB6296 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiBPbiBKdWwgMjIsIDIwMTksIGF0IDI6MDcgUE0sIFBldGVyIFppamxzdHJhIDxwZXRlcnpAaW5m cmFkZWFkLm9yZz4gd3JvdGU6DQo+IA0KPiBPbiBUaHUsIEp1bCAxOCwgMjAxOSBhdCAxMDo0MTox MEFNIC0wNzAwLCBOYWRhdiBBbWl0IHdyb3RlOg0KPj4gVGhlIGN1cnJlbnRfdGFzayBpcyBzdXBw b3NlZCB0byBiZSBjb25zdGFudCBpbiBlYWNoIHRocmVhZCBhbmQgdGhlcmVmb3JlDQo+PiBkb2Vz IG5vdCBuZWVkIHRvIGJlIHJlcmVhZC4gVGhlcmUgaXMgYWxyZWFkeSBhbiBhdHRlbXB0IHRvIGNh Y2hlIGl0DQo+PiB1c2luZyBpbmxpbmUgYXNzZW1ibHksIHVzaW5nIHRoaXNfY3B1X3JlYWRfc3Rh YmxlKCksIHdoaWNoIGhpZGVzIHRoZQ0KPj4gZGVwZW5kZW5jeSBvbiB0aGUgcmVhZCBtZW1vcnkg YWRkcmVzcy4NCj4gDQo+IElzIHRoYXQgd2hhdCBpdCBkb2VzPyEsIEkgbmV2ZXIgcXVpdGUgY291 bGQgdW5kZXJzdGFuZA0KPiBwZXJjcHVfc3RhYmxlX29wKCkuDQoNClRoYXTigJlzIG15IHVuZGVy c3RhbmRpbmcuIEkgYW0gbm90IHRvbyBwbGVhc2VkIHRoYXQgSSBjb3VsZCBub3QgY29tZSB1cCB3 aXRoDQphIGdlbmVyYWwgYWx0ZXJuYXRpdmUgdG8gdGhpc19jcHVfcmVhZF9zdGFibGUoKSwgbWFp bmx5IGJlY2F1c2UgZ2NjIGRvZXMgbm90DQpwcm92aWRlIGEgd2F5IHRvIGdldCB0aGUgdHlwZSB3 aXRob3V0IHRoZSBzZWdtZW50IHF1YWxpZmllci4gQW55aG93LA0K4oCcY3VycmVudOKAnSBzZWVt cyB0byBiZSB0aGUgbWFpbiBwYWluLXBvaW50Lg0KDQpJIHRoaW5rIGEgc2ltaWxhciBjb25zdC1h bGlhcyBhcHByb2FjaCBjYW4gYWxzbyBiZSB1c2VkIGZvciBzdHVmZiBsaWtlDQpib290X2NwdV9o YXMoKS4gSSBoYXZlIHNvbWUgcGF0Y2hlcyBmb3IgdGhhdCBzb21ld2hlcmUsIGJ1dCB0aGUgaW1w YWN0IGlzDQpzbWFsbGVyLiBJIGRvIHNlZSBzb21lIHNtYWxsLCBidXQgbWVhc3VyYWJsZSBwZXJm b3JtYW5jZSBpbXByb3ZlbWVudHMgd2l0aA0KdGhpcyBzZXJpZXMuIEnigJlsbCB0cnkgdG8gaW5j b3Jwb3JhdGUgdGhlbSBpbiB2MSBvbmNlIEkgaGF2ZSB0aW1lLg==