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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05D67C433EF for ; Thu, 12 May 2022 15:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355991AbiELPd7 (ORCPT ); Thu, 12 May 2022 11:33:59 -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. 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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 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