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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 2BBD6C43441 for ; Fri, 23 Nov 2018 09:34:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E794020820 for ; Fri, 23 Nov 2018 09:34:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E794020820 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405361AbeKWUSQ (ORCPT ); Fri, 23 Nov 2018 15:18:16 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:23632 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387987AbeKWUSQ (ORCPT ); Fri, 23 Nov 2018 15:18:16 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-166-TWy6a9ZrMV6iTM9A9wSALQ-1; Fri, 23 Nov 2018 09:34:42 +0000 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b::d117) by AcuMS.aculab.com (fd9f:af1c:a25b::d117) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 23 Nov 2018 09:34:49 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Fri, 23 Nov 2018 09:34:49 +0000 From: David Laight To: 'Linus Torvalds' , Andrew Lutomirski CC: "dvlasenk@redhat.com" , Jens Axboe , Ingo Molnar , Thomas Gleixner , "Ingo Molnar" , "bp@alien8.de" , Peter Anvin , the arch/x86 maintainers , Andrew Morton , Peter Zijlstra , "brgerst@gmail.com" , Linux List Kernel Mailing , "pabeni@redhat.com" Subject: RE: [PATCH] x86: only use ERMS for user copies for larger sizes Thread-Topic: [PATCH] x86: only use ERMS for user copies for larger sizes Thread-Index: AQHUgaBY0KBBfG3q00apJLDxEV5GB6VcD8pwgAAXuEiAAPNRcA== Date: Fri, 23 Nov 2018 09:34:49 +0000 Message-ID: References: <02bfc577-32a5-66be-64bf-d476b7d447d2@kernel.dk> <20181121063609.GA109082@gmail.com> <48e27a3a-2bb2-ff41-3512-8aeb3fd59e57@kernel.dk> <26eff539-7de7-784c-0c88-f1d30753299d@redhat.com> <7ea44458b90b4d41a08ba9012818d273@AcuMS.aculab.com> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: TWy6a9ZrMV6iTM9A9wSALQ-1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjIgTm92ZW1iZXIgMjAxOCAxODo1OA0KLi4u DQo+IE9oLCBhbmQgSSBqdXN0IG5vdGljZWQgdGhhdCBvbiB4ODYgd2UgZXhwcmVzc2x5IHVzZSBv dXIgb2xkICJzYWZlIGFuZA0KPiBzYW5lIiBmdW5jdGlvbnM6IHNlZSBfX2lubGluZV9tZW1jcHko KSwgYW5kIGl0cyB1c2UgaW4NCj4gX19tZW1jcHlfe2Zyb20sdG99aW8oKS4NCj4gDQo+IFNvIHRo ZSAiZmFsbHMgYmFjayB0byBtZW1jcHkiIHdhcyBhbHdheXMgYSByZWQgaGVycmluZy4gV2UgZG9u J3QNCj4gYWN0dWFsbHkgZG8gdGhhdC4NCj4gDQo+IFdoaWNoIGV4cGxhaW5zIHdoeSB0aGluZ3Mg d29yay4NCg0KSXQgZG9lc24ndCBleHBsYWluIHdoeSBJJ3ZlIHNlZW4gc2luZ2xlIGJ5dGUgUENJ ZSBUTFAgZ2VuZXJhdGVkDQpieSBtZW1jcHlfdG8vZnJvbWlvKCkuDQoNCkkndmUgaGFkIHRvIGNo YW5nZSBjb2RlIHRvIHVzZSByZWFkcS93cml0ZXEgbG9vcHMgYmVjYXVzZSB0aGUNCmJ5dGUgYWNj ZXNzZXMgYXJlIHNvIHNsb3cgLSBldmVuIHdoZW4gUElPIHBlcmZvcm1hbmNlIHNob3VsZA0KYmUg J2dvb2QgZW5vdWdoJy4NCg0KSXQgbWlnaHQgaGF2ZSBiZWVuIGNoYW5nZWQgc2luY2UgbGFzdCB0 aW1lIEkgdGVzdGVkIGl0Lg0KQnV0IEkgZG9uJ3QgcmVtZW1iZXIgc2VlaW5nIGEgY29tbWl0IGdv IGJ5Lg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5 IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRp b24gTm86IDEzOTczODYgKFdhbGVzKQ0K