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=-8.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 650BAC433B4 for ; Thu, 29 Apr 2021 21:08:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43AC761445 for ; Thu, 29 Apr 2021 21:08:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234710AbhD2VJl (ORCPT ); Thu, 29 Apr 2021 17:09:41 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:3096 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233284AbhD2VJk (ORCPT ); Thu, 29 Apr 2021 17:09:40 -0400 Received: from dggeme762-chm.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4FWSgS12HrzWZ7B; Fri, 30 Apr 2021 05:04:52 +0800 (CST) Received: from dggemi761-chm.china.huawei.com (10.1.198.147) by dggeme762-chm.china.huawei.com (10.3.19.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 30 Apr 2021 05:08:51 +0800 Received: from dggemi761-chm.china.huawei.com ([10.9.49.202]) by dggemi761-chm.china.huawei.com ([10.9.49.202]) with mapi id 15.01.2176.012; Fri, 30 Apr 2021 05:08:50 +0800 From: "Song Bao Hua (Barry Song)" To: Dave Hansen , "tiantao (H)" , "corbet@lwn.net" , "gregkh@linuxfoundation.org" CC: "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Rafael J. Wysocki" , Peter Zijlstra , "Valentin Schneider" , Dave Hansen , Daniel Bristot de Oliveira Subject: RE: [PATCH 1/2] CPU, NUMA topology ABIs: clarify the overflow issue of sysfs pagebuf Thread-Topic: [PATCH 1/2] CPU, NUMA topology ABIs: clarify the overflow issue of sysfs pagebuf Thread-Index: AQHXPMXH0SQBD1qG+ECo3ZrOidSRtqrLBimAgADzHOA= Date: Thu, 29 Apr 2021 21:08:50 +0000 Message-ID: <602918a1e2214ea7bd0890a751975566@hisilicon.com> References: <1619679819-45256-1-git-send-email-tiantao6@hisilicon.com> <1619679819-45256-2-git-send-email-tiantao6@hisilicon.com> <146e051b-603c-a6d3-43d8-d083cf2c8119@intel.com> In-Reply-To: <146e051b-603c-a6d3-43d8-d083cf2c8119@intel.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.126.200.93] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogRGF2ZSBIYW5zZW4gW21h aWx0bzpkYXZlLmhhbnNlbkBpbnRlbC5jb21dDQo+IFNlbnQ6IEZyaWRheSwgQXByaWwgMzAsIDIw MjEgMjoyMSBBTQ0KPiBUbzogdGlhbnRhbyAoSCkgPHRpYW50YW82QGhpc2lsaWNvbi5jb20+OyBj b3JiZXRAbHduLm5ldDsNCj4gZ3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5vcmc7IFNvbmcgQmFvIEh1 YSAoQmFycnkgU29uZykNCj4gPHNvbmcuYmFvLmh1YUBoaXNpbGljb24uY29tPg0KPiBDYzogbGlu dXgtZG9jQHZnZXIua2VybmVsLm9yZzsgbGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZzsgUmFm YWVsIEouDQo+IFd5c29ja2kgPHJhZmFlbEBrZXJuZWwub3JnPjsgUGV0ZXIgWmlqbHN0cmEgPHBl dGVyekBpbmZyYWRlYWQub3JnPjsgVmFsZW50aW4NCj4gU2NobmVpZGVyIDx2YWxlbnRpbi5zY2hu ZWlkZXJAYXJtLmNvbT47IERhdmUgSGFuc2VuDQo+IDxkYXZlLmhhbnNlbkBsaW51eC5pbnRlbC5j b20+OyBEYW5pZWwgQnJpc3RvdCBkZSBPbGl2ZWlyYSA8YnJpc3RvdEByZWRoYXQuY29tPg0KPiBT dWJqZWN0OiBSZTogW1BBVENIIDEvMl0gQ1BVLCBOVU1BIHRvcG9sb2d5IEFCSXM6IGNsYXJpZnkg dGhlIG92ZXJmbG93IGlzc3VlDQo+IG9mIHN5c2ZzIHBhZ2VidWYNCj4gDQo+IE9uIDQvMjkvMjEg MTI6MDMgQU0sIFRpYW4gVGFvIHdyb3RlOg0KPiA+IGRpZmYgLS1naXQgYS9Eb2N1bWVudGF0aW9u L0FCSS9zdGFibGUvc3lzZnMtZGV2aWNlcy1ub2RlDQo+IGIvRG9jdW1lbnRhdGlvbi9BQkkvc3Rh YmxlL3N5c2ZzLWRldmljZXMtbm9kZQ0KPiA+IGluZGV4IDQ4NGZjMDQuLjgyZGZlNjQgMTAwNjQ0 DQo+ID4gLS0tIGEvRG9jdW1lbnRhdGlvbi9BQkkvc3RhYmxlL3N5c2ZzLWRldmljZXMtbm9kZQ0K PiA+ICsrKyBiL0RvY3VtZW50YXRpb24vQUJJL3N0YWJsZS9zeXNmcy1kZXZpY2VzLW5vZGUNCj4g PiBAQCAtNDcsNyArNDcsMTAgQEAgV2hhdDoJCS9zeXMvZGV2aWNlcy9zeXN0ZW0vbm9kZS9ub2Rl WC9jcHVsaXN0DQo+ID4gIERhdGU6CQlPY3RvYmVyIDIwMDINCj4gPiAgQ29udGFjdDoJTGludXgg TWVtb3J5IE1hbmFnZW1lbnQgbGlzdCA8bGludXgtbW1Aa3ZhY2sub3JnPg0KPiA+ICBEZXNjcmlw dGlvbjoNCj4gPiAtCQlUaGUgQ1BVcyBhc3NvY2lhdGVkIHRvIHRoZSBub2RlLg0KPiA+ICsJCVRo ZSBDUFVzIGFzc29jaWF0ZWQgdG8gdGhlIG5vZGUuIFRoZSBmb3JtYXQgaXMgbGlrZSAwLTMsDQo+ ID4gKwkJOC0xMSwgMTQsMTcuIG1heGltdW0gc2l6ZSBpcyBQQUdFX1NJWkUsIHNvIHRoZSB0YWls DQo+ID4gKwkJb2YgdGhlIHN0cmluZyB3aWxsIGJlIHRyaW1tZWQgd2hpbGUgaXRzIHNpemUgaXMg bGFyZ2VyDQo+ID4gKwkJdGhhbiBQQUdFX1NJWkUuDQo+IA0KPiBJIHRoaW5rIGl0J3MgcHJldHR5 IGFyZ3VhYmxlIHRoYXQgdHJ1bmNhdGluZyBvdXRwdXQgb24gYSByZWFsIHN5c3RlbSBpcw0KPiBh biBBQkkgYnJlYWsuICBEb2luZyB0aGlzIHdvdWxkIG1ha2UgdGhlIGludGVyZmFjZSByYXRoZXIg dXNlbGVzcy4NCj4gDQo+IERvbid0IHdlIG5lZWQgYSByZWFsIHNvbHV0aW9uIHJhdGhlciB0aGFu IHRocm93aW5nIHVwIG91ciBoYW5kcz8NCj4gDQo+IERvIHdlIHRoaW5rID5QQUdFX1NJWkUgZGF0 YSBvdXQgb2YgYSBzeXNmcyBmaWxlIGlzIGEgd29yc2UgQUJJIGJyZWFrIG9yDQo+IHNvbWV0aGlu Zz8NCg0KVGhpcyBraW5kIG9mIGNwdSBsaXN0IEFCSXMgaGF2ZSBiZWVuIHRoZXJlIGZvciBtYW55 IHllYXJzIGJ1dCBoYXZlIA0KbmV2ZXIgYmVlbiBkb2N1bWVudGVkIHdlbGwuDQoNCldlIGhhdmUg dHdvIEFCSXM6DQp4eHhfY3B1cyAtIGluIGZvcm1hdCBsaWtlIDMzMzMzMzMzMzMNCnh4eF9jcHVz X2xpc3QgLSBpbiBmb3JtYXQgbGlrZSAwLDMsNSw3LDksMTEsMTMuLi4uDQoNCnh4eF9jcHVzX2xp c3QgaXMgYW5vdGhlciBodW1hbi1yZWFkYWJsZSB2ZXJzaW9uIG9mIHh4eF9jcHVzLiBJdCBkb2Vz bid0DQppbmNsdWRlIGFueSBtb3JlIHVzZWZ1bCBpbmZvcm1hdGlvbiB0aGFuIHh4eF9jcHVzLg0K DQp4eHhfY3B1cyB3b24ndCBvdmVyZmxvdyBiYXNlZCBvbiBCVUlMRF9CVUdfT04gYW5kIG1heGlt dW0gTlJfQ1BVUw0KaW4ga2NvbmZpZyBub3dhZGF5cy4NCg0KaWYgcGVvcGxlIGFsbCBhZ3JlZSB0 aGUgdHJpbW1lZCBsaXN0IGlzIGEgYnJlYWsgb2YgQUJJLCBJIHRoaW5rIHdlIG1heQ0KdG90YWxs eSByZW1vdmUgdGhpcyBsaXN0LiBGb3IgdGhlc2UgZGF5cywgdGhpcyBsaXN0IHByb2JhYmx5IGhh cyBuZXZlcg0Kb3ZlcmZsb3dlZCBidXQgbGl0ZXJhbGx5IHRoaXMgY291bGQgaGFwcGVuLg0KDQp0 aG91Z2h0cz8NCg0KVGhhbmtzDQpCYXJyeQ0K