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 EBAD4C43334 for ; Tue, 26 Jul 2022 07:41:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238144AbiGZHls (ORCPT ); Tue, 26 Jul 2022 03:41:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238570AbiGZHla (ORCPT ); Tue, 26 Jul 2022 03:41:30 -0400 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 34F7A25E for ; Tue, 26 Jul 2022 00:41:06 -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-117-Nb8URzkWP6GuxQBT3N9TeA-1; Tue, 26 Jul 2022 08:41:04 +0100 X-MC-Unique: Nb8URzkWP6GuxQBT3N9TeA-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 15.0.1497.36; Tue, 26 Jul 2022 08:41:03 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.036; Tue, 26 Jul 2022 08:41:03 +0100 From: David Laight To: 'Dave Hansen' , 'Yi Sun' , "linux-kernel@vger.kernel.org" , "x86@kernel.org" CC: "sohil.mehta@intel.com" , "tony.luck@intel.com" , "heng.su@intel.com" Subject: RE: [PATCH 1/2] x86/fpu: Measure the Latency of XSAVE and XRSTOR Thread-Topic: [PATCH 1/2] x86/fpu: Measure the Latency of XSAVE and XRSTOR Thread-Index: AQHYnm+ODXPdzib5uU6pj7yBjiIw9q2OAAFwgAFOtoCAAPilIA== Date: Tue, 26 Jul 2022 07:41:03 +0000 Message-ID: References: <20220723083800.824442-1-yi.sun@intel.com> <20220723083800.824442-2-yi.sun@intel.com> <921078bc2a994d3ab6aba26d4654cb47@AcuMS.aculab.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 RnJvbTogRGF2ZSBIYW5zZW4NCj4gU2VudDogMjUgSnVseSAyMDIyIDE4OjQ0DQo+IA0KPiBPbiA3 LzI0LzIyIDEzOjU0LCBEYXZpZCBMYWlnaHQgd3JvdGU6DQo+ID4gSSd2ZSBkb25lIHNvbWUgZXhw ZXJpbWVudHMgdGhhdCBtZWFzdXJlIHNob3J0IGluc3RydWN0aW9uIGxhdGVuY2llcy4NCj4gPiBC YXNpY2FsbHkgSSBmb3VuZDoNCj4gDQo+IFNob3J0PyAgVGhlIGluc3RydWN0aW9ucyBpbiBxdWVz dGlvbiBjYW4gd3JpdGUgdXAgdG8gYWJvdXQgMTJrIG9mIGRhdGEuDQo+ICBUaGF0J3Mgbm90ICJz aG9ydCIgYnkgYW55IG1lYW5zLg0KPiANCj4gSSdtIGFsc28gbm90IHN1cmUgcHJlY2lzaW9uIGhl cmUgaXMgYWxsIHRoYXQgaW1wb3J0YW50LiAgVGhlIG1haW4gdGhpbmdzDQo+IHdlIHdhbnQgdG8g a25vdyBoZXJlIHdoZW4gYW5kIHdoZXJlIHRoZSBpbml0IGFuZCBtb2RpZmllZCBvcHRpbWl6YXRp b25zDQo+IGFyZSBjb21pbmcgaW50byBwbGF5LiAgSW4gb3RoZXIgd29yZHMsIGhvdyBvZnRlbiBp cyB0aGVyZSBhY3R1YWwgZGF0YQ0KPiB0aGF0ICpuZWVkcyogdG8gYmUgc2F2ZWQgYW5kIHJlc3Rv cmVkIGFuZCBjYW4ndCBiZSBvcHRpbWl6ZWQgYXdheS4NCj4gDQo+IFNvLCBzdXJlLCBpZiB3ZSB3 ZXJlIG1lYXN1cmluZyBhIGRvemVuIGN5Y2xlcyBoZXJlLCB5b3UgY291bGQgbWFrZSBhbg0KPiBh cmd1bWVudCB0aGF0IHRoaXMgX21pZ2h0XyBiZSBwcm9ibGVtYXRpYy4NCj4gDQo+IEJ1dCwgaW4g dGhpcyBjYXNlLCB3ZSByZWFsbHkganVzdCB3YW50IHRvIGJlIGFibGUgdG8gdGVsbCB3aGVuDQo+ IFhTQVZFL1hSU1RPUiBhcmUgZ2V0dGluZyBtb3JlIG9yIGxlc3MgZXhwZW5zaXZlIGFuZCBhbHNv IGdldCBvdXQgYQ0KPiBtaW5pbWFsIGFtb3VudCBvZiBkYXRhIChSRkJNL1hJTlVTRSkgdG8gbWFr ZSBhIGd1ZXNzIHdoeSB0aGF0IG1pZ2h0IGJlLg0KPiANCj4gSXMgaXQgKlJFQUxMWSogd29ydGgg dGhyb3dpbmcgc2VyaWFsaXppbmcgaW5zdHJ1Y3Rpb25zIGluIGFuZCBtb3ZpbmcNCj4gY2xvY2sg c291cmNlcyB0byBkbyB0aGF0PyAgSXMgdGhlIGFkZGVkIHByZWNpc2lvbiB3b3J0aCBpdD8NCg0K SSBzdXNwZWN0IHRoYXQgaWYgeW91IHJ1biB5b3VyIHRlc3QgaW4gYSBsb29wIHRoZSBjcHUgd2ls bA0KYmUgcnVubmluZyBhdCA4MDBNSHogZm9yIHRoZSBmaXJzdCBpdGVyYXRpb24gYnV0IHdpbGwg c29vbg0KYmUgcnVubmluZyBhdCAzR0h6Lg0KVGhhdCBpcyBhIDQtZm9sZCBjaGFuZ2UgaW4gZXhl Y3V0aW9uIHRpbWUgaWYgeW91IHVzZSB0aGUgVFNDLg0KDQpJSVJDIFJEVFNDIGlzIGEgc2VyaWFs aXNpbmcgaW5zdHJ1Y3Rpb24gKG9mIHNvbWUgZm9ybSksIFhTQVZFDQphbmQgWFJTVE9SIG1heSBh bHNvIGJlIC0gc28geW91IHByb2JhYmx5IGFyZSB3YWl0aW5nIGZvciB0aGUNCmluc3RydWN0aW9u IHRvIGZpbmlzaC4NCkJ1dCB5b3UgZG8gYWN0dWFsbHkgbmVlZCB0byBlbnN1cmUgdGhhdCBpcyBo YXBwZW5pbmcuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJy YW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lz dHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=