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 2CABFC433EF for ; Fri, 11 Mar 2022 08:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234704AbiCKIRC (ORCPT ); Fri, 11 Mar 2022 03:17:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232648AbiCKIRA (ORCPT ); Fri, 11 Mar 2022 03:17:00 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DE04212220F for ; Fri, 11 Mar 2022 00:15:56 -0800 (PST) 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-mtapsc-5-eW6bvoBZPHeqSlfdNPCSeQ-1; Fri, 11 Mar 2022 08:15:54 +0000 X-MC-Unique: eW6bvoBZPHeqSlfdNPCSeQ-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 15.0.1497.28; Fri, 11 Mar 2022 08:15:52 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Fri, 11 Mar 2022 08:15:52 +0000 From: David Laight To: 'Bharata B Rao' , 'Dave Hansen' , "linux-kernel@vger.kernel.org" CC: "linux-mm@kvack.org" , "x86@kernel.org" , "kirill.shutemov@linux.intel.com" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "catalin.marinas@arm.com" , "will@kernel.org" , "shuah@kernel.org" , "oleg@redhat.com" , "ananth.narayan@amd.com" Subject: RE: [RFC PATCH v0 0/6] x86/AMD: Userspace address tagging Thread-Topic: [RFC PATCH v0 0/6] x86/AMD: Userspace address tagging Thread-Index: AQHYNHBEWuVw0etF4EmWwhK6DFJ++Ky4rWmQgAAmSACAAAWIEIAA046AgAAnczA= Date: Fri, 11 Mar 2022 08:15:52 +0000 Message-ID: <15fb8774026b4350b2653ce119c85820@AcuMS.aculab.com> References: <20220310111545.10852-1-bharata@amd.com> <699fb763ac054833bc8c29c9814c63b2@AcuMS.aculab.com> <286efdb9-7dbf-82f3-b172-29c575a3791b@intel.com> In-Reply-To: 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 RnJvbTogQmhhcmF0YSBCIFJhbw0KPiBTZW50OiAxMSBNYXJjaCAyMDIyIDA1OjQzDQo+IE9uIDMv MTAvMjAyMiAxMDo0OSBQTSwgRGF2aWQgTGFpZ2h0IHdyb3RlOg0KPiA+IEZyb206IERhdmUgSGFu c2VuIDxkYXZlLmhhbnNlbkBpbnRlbC5jb20+DQo+ID4+IFNlbnQ6IDEwIE1hcmNoIDIwMjIgMTY6 NDYNCj4gPj4NCj4gPj4gT24gMy8xMC8yMiAwNjozMiwgRGF2aWQgTGFpZ2h0IHdyb3RlOg0KPiA+ Pj4+IFVBSSBhbGxvd3Mgc29mdHdhcmUgdG8gc3RvcmUgYSB0YWcgaW4gdGhlIHVwcGVyIDcgYml0 cyBvZiBhIGxvZ2ljYWwNCj4gPj4+PiBhZGRyZXNzIFs2Mzo1N10uIFdoZW4gZW5hYmxlZCwgdGhl IHByb2Nlc3NvciB3aWxsIHN1cHByZXNzIHRoZQ0KPiA+Pj4+IHRyYWRpdGlvbmFsIGNhbm9uaWNh bCBhZGRyZXNzIGNoZWNrcyBvbiB0aGUgYWRkcmVzc2VzLiBNb3JlIGluZm9ybWF0aW9uDQo+ID4+ Pj4gYWJvdXQgVUFJIGNhbiBiZSBmb3VuZCBpbiBzZWN0aW9uIDUuMTAgb2YgJ0FNRDY0IEFyY2hp dGVjdHVyZQ0KPiA+Pj4+IFByb2dyYW1tZXIncyBNYW51YWwsIFZvbCAyOiBTeXN0ZW0gUHJvZ3Jh bW1pbmcnIHdoaWNoIGlzIGF2YWlsYWJsZSBmcm9tDQo+ID4+Pj4NCiwsLA0KPiA+Pj4gSXMgdGhh dCByZWFsbHkgYWxsb3dpbmcgYml0IDYzIHRvIGJlIHVzZWQ/DQo+ID4+PiBUaGF0IGlzIG5vcm1h bGx5IHRoZSB1c2VyLWtlcm5lbCBiaXQuDQo+ID4+PiBJIGNhbid0IGhlbHAgZmVlbGluZyB0aGF0 IHdpbGwganVzdCBiYWRseSBicmVhayB0aGluZ3MuDQo+ID4+DQo+ID4+IFllYWgsIHRoaXMgZG9l cyBzZWVtIHdvcnJpc29tZS4gIFRoZSBMQU0gYXBwcm9hY2hbMV0gcmV0YWlucw0KPiA+PiBjYW5v bmljYWxpdHkgY2hlY2tpbmcgZm9yIGJpdCA2My4NCj4gPg0KPiA+IEFjdHVhbGx5IGl0IGlzIHJh dGhlciB3b3JzZSB0aGFuICd3b3JyaXNvbWUnLg0KPiA+IEFsbG93aW5nIHRoZSB1c2VyIGFsbCBh ZGRyZXNzIHVwdG8gdGhlIGJhc2Ugb2YgdGhlIHZhbGlkDQo+ID4ga2VybmVsIGFkZHJlc3NlcyAo cHJvYmFibHkgdGFncyB0byAzZSwgYnV0IG5vdCAzZikNCj4gPiBtZWFucyB0aGF0IHlvdSBjYW4n dCB1c2UgYSBmYXN0IGFkZHJlc3MgY2hlY2sgaW4gYWNjZXNzX29rKCkuDQo+ID4gWW91IGFyZSBm b3JjZWQgdG8gdXNlIHRoZSBzdHJpY3QgdGVzdCB0aGF0IDMyYml0IGtlcm5lbHMgdXNlLg0KPiAN Cj4gRnJvbSB3aGF0IEkgc2VlLCB0aGVyZSBpcyBhIHNpbmdsZSBpbXBsZW1lbnRhdGlvbiBvZiBh Y2Nlc3Nfb2soKQ0KPiBpbiBhcmNoL3g4Ni9hc20vaW5jbHVkZS91YWNjZXNzLmggdGhhdCBkb2Vz IGNoZWNrIGlmIHRoZSB1c2VyDQo+IGFkZHJlc3Mrc2l6ZSBleGNlZWRzIHRoZSBsaW1pdC4NCj4g DQo+IEd1ZXNzIEkgYW0gbWlzc2luZyBzb21ldGhpbmcsIGJ1dCBjYW4geW91IHBsZWFzZSBwb2lu dCBtZSB0byB0aGUgZmFzdA0KPiBpbXBsZW1lbnRhdGlvbih0aGF0IGJlbmVmaXRzIGZyb20gYml0 IDYzIGJlaW5nIHVzZXIva2VybmVsIGFkZHJlc3MNCj4gZGlzYW1iaWd1YXRpb24gYml0KSBhbmQg dGhlIHN0cmljdCBjaGVja2luZyBpbiAzMmJpdCBrZXJuZWxzIHRoYXQNCj4gYXJlIHlvdSBhcmUg cmVmZXJyaW5nIHRvPw0KDQpZb3UgY2FuIGp1c3QgY2hlY2sgKChhZGRyZXNzIHwgc2l6ZSkgPj4g NjIpIG9uIDY0Yml0IGFyY2ggdGhhdA0KdXNlIGJpdCA2MyB0byBzZWxlY3QgdXNlci9rZXJuZWwg YW5kIGhhdmUgYSBtYXNzaXZlIGFkZHJlc3MNCmhvbGUgbmVhciB0aGUgYm91bmRhcnkuDQpUaGUg Y29tcGlsZXIgb3B0aW1pc2VzIG91dCBjb25zdGFudCBzaXplIGZyb20gdGhhdCBjYWxjdWxhdGlv bi4NCk9uIHg4Ni02NCBub24tY2Fub25pY2FsIGFkZHJlc3NlcyBnaXZlIGEgZGlmZmVyZW50IGZh dWx0DQp0byAncGFnZSBub3QgcHJlc2VudCcgLSBidXQgdGhhdCBjYW4gYmUgaGFuZGxlZC4NCg0K SW4gcHJhY3RpY2UgeW91IGNhbiAocHJvYmFibHkpIGV2ZW4gY29tcGxldGVseSBpZ25vcmUgdGhl ICdzaXplJw0KYW5kIGp1c3QgZXJyb3IgaWYgdGhlIHRvcCBiaXQgb2YgdGhlIGFkZHJlc3MgaXMg c2V0Lg0KV2hpbGUgYWNjZXNzZXMgbWlnaHQgbm90IGJlIGNvbXBsZXRlbHkgc2VxdWVudGlhbCB0 aGV5IGFyZW4ndA0KZ29pbmcgdG8ganVtcCBvdmVyIHRoZSBub24tY2Fub25pY2FsIGFkZHJlc3Nl cy4NCg0KPiBBbHNvIEkgd29uZGVyIGhlcmUgd2h5IEFSTTY0IFRCSSB3aGljaCBhbHNvIHVzZXMg dGhlIGZ1bGwgdXBwZXIgYnl0ZQ0KPiAoaW5jbHVkaW5nIGJpdCA2MykgZm9yIHN0b3JpbmcgdGFn L21ldGFkYXRhIGRvZXNuJ3Qgc3VmZmVyIGZyb20NCj4gdGhpcyBzYW1lIHByb2JsZW0/DQoNClRo ZSB1c2VyLWtlcm5lbCBiaXQgaXMgbG93ZXIgZG93biAoc29tZXRoaW5nIGxpa2UgYml0IDUzKSBz byB0aGUNCnRhZ3MgYXJlIHVzaW5nIHNlcGFyYXRlIGJpdHMuDQpBbHRob3VnaCB0aGF0IGNob2lj ZSBvZiB1c2VyL2tlcm5lbCBiaXQgbWFrZXMgbGlmZSBoYXJkIGVsc2V3aGVyZS4NCg0KCURhdmlk DQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBG YXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2 IChXYWxlcykNCg==