Received: by 2002:a6b:500f:0:0:0:0:0 with SMTP id e15csp941448iob; Fri, 13 May 2022 17:12:36 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz11AvjTZ3GN4F1QY8jeRNIPx38ucpdF2YUTwT0Q/BObBn3e0shZ+z2+NZcWfNgg/y6PX7U X-Received: by 2002:a1c:2c3:0:b0:38f:f280:caa3 with SMTP id 186-20020a1c02c3000000b0038ff280caa3mr6576098wmc.14.1652487156391; Fri, 13 May 2022 17:12:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1652487156; cv=none; d=google.com; s=arc-20160816; b=ef+jb0cjkGzJvCILHtsWVxY3XRiViR7dDDvUHmOmDqIiz1vvmLZdyCd7yLdK2YmNZy rjP60MnJGw/NYkY1+/Qpid26lelzoptWJUcLE1JGe5nQGWWt9z4uexwqNI6ZUfTjkBgI 6qc+6KoBzqyJS6Jqr7OF7o7imITQlPBqhelCVxPkhBHWxoYrG6s/o/bvfI7bWoWXd6bs ONRxPKT9ovMG45uNM2zM69UeToNdFhPwc86b8aDr/8Tl8r2gexn9D4TNONXjWMlEklLM wJyqcz6FZgx24AGPa+BPoqrk6kwfHY2tQ3twopjLXZFTSf3eENafr0V9ABVIuMq/Fmtw 7JQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=jMS2ziKoZUswcyqpFKeGWgK6vetpm0Bz3eY7e4pggk4=; b=imaydP3iwjl48/h7V3o03stXNQGdRnUEAiiYhi7oSQx78WgCgTiqQYrfF/MS9Vk3/s 3MbH/zY9DtgDu3oIICmLRBP/8IIKaUBy6gg8ZoJTYSPC1diJm1KsVG9TCbIRDygnyXJv 76q0yWRNMLxZM48jxWuiKjEVz7SoWgFYTtL8DesEgNBrT894TkicYu9bwo/Pwf2SkrFV HGbJTXVKo2vMd3a81PxZfHNkgcPhEpaZCiChRytM+PRRIWiTb7nhVVNiYMrAdwH4z2yy ivdeCJblI4Ra/4x/0SlhzoF9eBNM6gS37rYMcT9Nh1hzI7oTP6j+U6citV76gq9+7ssA 3Svg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Return-Path: Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id e14-20020adfe38e000000b0020ab78c24fdsi3157648wrm.746.2022.05.13.17.12.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 May 2022 17:12:36 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5C00F31BFED; Fri, 13 May 2022 16:13:42 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355984AbiELPd6 (ORCPT + 99 others); Thu, 12 May 2022 11:33:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354821AbiELPd5 (ORCPT ); Thu, 12 May 2022 11:33:57 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6605422A8B7 for ; Thu, 12 May 2022 08:33:56 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-66-PftQrsdrOv2ZJM_NmJ7mQQ-1; Thu, 12 May 2022 16:33:53 +0100 X-MC-Unique: PftQrsdrOv2ZJM_NmJ7mQQ-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Thu, 12 May 2022 16:33:52 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.033; Thu, 12 May 2022 16:33:52 +0100 From: David Laight To: 'Thomas Gleixner' , Matthew Wilcox CC: "'Kirill A. Shutemov'" , Dave Hansen , Andy Lutomirski , "Peter Zijlstra" , "x86@kernel.org" , "Andrey Ryabinin" , Alexander Potapenko , Dmitry Vyukov , "H . J . Lu" , "Andi Kleen" , Rick Edgecombe , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] x86: Implement Linear Address Masking support Thread-Topic: [PATCH] x86: Implement Linear Address Masking support Thread-Index: AQHYZN7+/opgI73BZUKmGdIzOSRkmq0bNCgQgAAl446AAAZ9cA== Date: Thu, 12 May 2022 15:33:52 +0000 Message-ID: References: <20220511022751.65540-1-kirill.shutemov@linux.intel.com> <20220511022751.65540-2-kirill.shutemov@linux.intel.com> <87v8uavlha.ffs@tglx> In-Reply-To: <87v8uavlha.ffs@tglx> Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogVGhvbWFzIEdsZWl4bmVyDQo+IFNlbnQ6IDEyIE1heSAyMDIyIDE2OjA3DQo+IA0KPiBP biBUaHUsIE1heSAxMiAyMDIyIGF0IDE1OjA3LCBNYXR0aGV3IFdpbGNveCB3cm90ZToNCj4gPiBP biBUaHUsIE1heSAxMiwgMjAyMiBhdCAwMTowMTowN1BNICswMDAwLCBEYXZpZCBMYWlnaHQgd3Jv dGU6DQo+ID4+ID4gK3N0YXRpYyBpbmxpbmUgaW50NjRfdCBzaWduX2V4dGVuZDY0KHVpbnQ2NF90 IHZhbHVlLCBpbnQgaW5kZXgpDQo+ID4+ID4gK3sNCj4gPj4gPiArICAgIGludCBzaGlmdCA9IDYz IC0gaW5kZXg7DQo+ID4+ID4gKyAgICByZXR1cm4gKGludDY0X3QpKHZhbHVlIDw8IHNoaWZ0KSA+ PiBzaGlmdDsNCj4gPj4gPiArfQ0KPiA+Pg0KPiA+PiBTaGlmdCBvZiBzaWduZWQgaW50ZWdlcnMg YXJlIFVCLg0KPiA+DQo+ID4gQ2l0YXRpb24gbmVlZGVkLg0KPiANCj4gSSdsbCBiaXRlIDopDQo+ IA0KPiBDMTEvMTk6IDYuNS43IEJpdHdpc2Ugc2hpZnQgb3BlcmF0b3JzDQo+IA0KPiAgIDQgVGhl IHJlc3VsdCBvZiBFMSA8PCBFMiBpcyBFMSBsZWZ0LXNoaWZ0ZWQgRTIgYml0IHBvc2l0aW9uczsg dmFjYXRlZA0KPiAgICAgYml0cyBhcmUgZmlsbGVkIHdpdGggemVyb3MuIElmIEUxIGhhcyBhbiB1 bnNpZ25lZCB0eXBlLCB0aGUgdmFsdWUgb2YNCj4gICAgIHRoZSByZXN1bHQgaXMgRTEgw5cgMkUy LCByZWR1Y2VkIG1vZHVsbyBvbmUgbW9yZSB0aGFuIHRoZSBtYXhpbXVtDQo+ICAgICB2YWx1ZSBy ZXByZXNlbnRhYmxlIGluIHRoZSByZXN1bHQgdHlwZS4gSWYgRTEgaGFzIGEgc2lnbmVkIHR5cGUg YW5kDQo+ICAgICBub25uZWdhdGl2ZSB2YWx1ZSwgYW5kIEUxIMOXIDJFMiBpcyByZXByZXNlbnRh YmxlIGluIHRoZSByZXN1bHQgdHlwZSwNCj4gICAgIHRoZW4gdGhhdCBpcyB0aGUgcmVzdWx0aW5n IHZhbHVlOyBvdGhlcndpc2UsIHRoZSBiZWhhdmlvciBpcw0KPiAgICAgdW5kZWZpbmVkLg0KPiAN Cj4gVGhpcyBpcyBpcnJlbGV2YW50IGZvciB0aGUgY2FzZSBhYm92ZSBiZWNhdXNlIHRoZSBsZWZ0 IHNoaWZ0IGlzIG9uIGFuDQo+IHVuc2lnbmVkIGludGVnZXIuIFRoZSBpbnRlcmVzdGluZyBwYXJ0 IGlzIHRoaXM6DQo+IA0KPiAgIDUgVGhlIHJlc3VsdCBvZiBFMSA+PiBFMiBpcyBFMSByaWdodC1z aGlmdGVkIEUyIGJpdCBwb3NpdGlvbnMuIElmIEUxDQo+ICAgICBoYXMgYW4gdW5zaWduZWQgdHlw ZSBvciBpZiBFMSBoYXMgYSBzaWduZWQgdHlwZSBhbmQgYSBub25uZWdhdGl2ZQ0KPiAgICAgdmFs dWUsIHRoZSB2YWx1ZSBvZiB0aGUgcmVzdWx0IGlzIHRoZSBpbnRlZ3JhbCBwYXJ0IG9mIHRoZSBx dW90aWVudA0KPiAgICAgb2YgRTEvMkUyLiAgSWYgRTEgaGFzIGEgc2lnbmVkIHR5cGUgYW5kIGEg bmVnYXRpdmUgdmFsdWUsIHRoZQ0KPiAgICAgcmVzdWx0aW5nIHZhbHVlIGlzIGltcGxlbWVudGF0 aW9uLWRlZmluZWQuDQo+IA0KPiBTbyBpdCdzIG5vdCBVQiwgaXQncyBpbXBsZW1lbnRhdGlvbiBk ZWZpbmVkLiBUaGUgb2J2aW91cyBjaG9pY2UgaXMgdG8NCj4ga2VlcCBMU0Igc2V0LCBpLmUuIGFy aXRobWV0aWMgc2hpZnQsIHdoYXQgYm90aCBHQ0MgYW5kIGNsYW5nIGRvLg0KDQpJJ20gc3VyZSBz b21lb25lIHJlY2VudGx5IHNhaWQgb25lIG9mIHRoZSBzdGFuZGFyZHMgaGFkIG1hZGUgdGhlbSBV Qi4NCg0KSW4gYW55IGNhc2UsIGdpdmVuIHRoZSBjYWxsZXIgc2VlbXMgdG8ga25vdyB3aGV0aGVy IHRoZSB0b3AgYml0IGlzIHNldA0KKGFuZCBkb2VzIGEgZGlmZmVyZW50IGNhbGwpIHVzaW5nIHw9 IG9yICY9IGlzIGRpc3RpbmN0bHkgYmV0dGVyLg0KRXNwZWNpYWxseSBzaW5jZSB0aGUgcmVxdWly ZWQgY29uc3RhbnQgY2FuIGJlIGNvbXB1dGVkIGluIGEgc2xvdyBwYXRoLg0KDQoJRGF2aWQNCg0K LQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0s IE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdh bGVzKQ0K