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[2620:137:e000::1:20]) by mx.google.com with ESMTP id x20-20020a05640226d400b0045cf3759408si18494582edd.49.2022.11.02.14.55.46; Wed, 02 Nov 2022 14:56:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231262AbiKBVlw (ORCPT + 98 others); Wed, 2 Nov 2022 17:41:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229459AbiKBVlu (ORCPT ); Wed, 2 Nov 2022 17:41:50 -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 ESMTPS id DD4B26428 for ; Wed, 2 Nov 2022 14:41:48 -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-113-H_Ns1qzeOZy9zA3lcEYQCQ-1; Wed, 02 Nov 2022 21:41:45 +0000 X-MC-Unique: H_Ns1qzeOZy9zA3lcEYQCQ-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 2 Nov 2022 21:41:45 +0000 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.042; Wed, 2 Nov 2022 21:41:45 +0000 From: David Laight To: 'Borislav Petkov' , YingChi Long CC: "chang.seok.bae@intel.com" , "dave.hansen@linux.intel.com" , "hpa@zytor.com" , "linux-kernel@vger.kernel.org" , "mingo@redhat.com" , "ndesaulniers@google.com" , "pbonzini@redhat.com" , "tglx@linutronix.de" , "x86@kernel.org" Subject: RE: [PATCH RESEND v3] x86/fpu: use _Alignof to avoid UB in TYPE_ALIGN Thread-Topic: [PATCH RESEND v3] x86/fpu: use _Alignof to avoid UB in TYPE_ALIGN Thread-Index: AQHY7tv1cHXXelDx7UO8GrKC3QIm9K4sJ2Ig Date: Wed, 2 Nov 2022 21:41:44 +0000 Message-ID: <1f8cc34bc3af40468e9de6307ff4ad1a@AcuMS.aculab.com> References: <20221006141442.2475978-1-me@inclyc.cn> <20221029122552.2855941-1-me@inclyc.cn> 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 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,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 RnJvbTogQm9yaXNsYXYgUGV0a292DQo+IFNlbnQ6IDAyIE5vdmVtYmVyIDIwMjIgMTY6NTYNCj4g DQo+IE9uIFNhdCwgT2N0IDI5LCAyMDIyIGF0IDA4OjI1OjUyUE0gKzA4MDAsIFlpbmdDaGkgTG9u ZyB3cm90ZToNCj4gPiBXRzE0IE4yMzUwIG1hZGUgdmVyeSBjbGVhciB0aGF0IGl0IGlzIGFuIFVC IGhhdmluZyB0eXBlIGRlZmluaXRpb25zDQo+ID4gd2l0aCBpbiAib2Zmc2V0b2YiLg0KPiANCj4g UGxzIHB1dCB0aGUgd29ya2luZyBncm91cCBVUkwgbm90ZSBoZXJlLCBub3QgYmVsb3cgaW4gYSBM aW5rIHRhZy4NCj4gDQo+IEFsc28sIHdyaXRlIG91dCAiVUIiIHBscy4NCg0KSSdtIGFsc28gcHJl dHR5IHN1cmUgaXQgaXMgb25seSB1bmRlZmluZWQgYmVjYXVzZSBhIGNvbXBpbGVyDQppcyBhbGxv d2VkIHRvIGFkZCBwYWRkaW5nIGJldHdlZW4gc3RydWN0dXJlIG1lbWJlcnMuDQpTbyB0aGUgdHlw ZSBkZWZpbml0aW9uIGluc2lkZSBvZmZzZXRvZigpIGNvdWxkIGJlIGxhaWQgb3V0DQpkaWZmZXJl bnRseSBmcm9tIGFueSBvdGhlciBzaW1pbGFyIGRlZmluaXRpb24uDQoNCkhvd2V2ZXIgdGhlIGtl cm5lbCByZXF1aXJlcyB0aGF0IHRoZSBjb21waWxlciBvbmx5IGFkZHMgdGhlDQptaW5pbXVtIHBh ZGRpbmcgcmVxdWlyZWQgdG8gYWxpZ24gbWVtYmVycy4NClNvIGluIHRoZSBrZXJuZWwgaXQgaXMg YWN0dWFsbHkgZmluZS4NCg0KT1RPSCB1c2luZyBBbGlnbm9mKCkgKGV0YykgaXMgY2xlYW5lci4N Cg0KVGhpcyBpcyBhbGwgc2ltaWxhciB0byAocHJvYmFibHkpIHdoeSBjbGFuZyBvYmplY3RzIHRv IGFyaXRobWV0aWMNCm9uIE5VTEwgKGllIGltcGxlbWVudGluZyBvZmZzZXRvZiBieSBsb29raW5n IGF0IHRoZSBhZGRyZXNzIG9mDQphIGZpZWxkIHdoZW4gTlVMTCBpcyBjYXN0IHRvIHRoZSBzdHJ1 Y3QgdHlwZSkuDQpUaGlzIGlzIG9ubHkgdW5kZWZpbmVkIGJlY2F1c2UgdGhlIE5VTEwgcG9pbnRl ciBtaWdodCBub3QNCmhhdmUgdGhlIGFsbC16ZXJvIGJpdCBwYXR0ZXJuLg0KQnV0IHByZXR0eSBt dWNoIGV2ZXJ5IEMgQUJJIHVzZXMgdGhlIHplcm8gYml0IHBhdHRlcm4gZm9yIE5VTEwuDQpJZiBp dCB1c2VkIGFueSBvdGhlciB2YWx1ZSB0aGVuIG1vc3Qgb2YgdGhlIG1lbXNldCgpIG9mIHN0cnVj dHVyZXMNCndvdWxkIG5lZWQgY2hhbmdpbmcuIFNvIGZvciBwb3J0YWJpbGl0eSB0aGV5IG91Z2h0 IHRvIGdlbmVyYXRlDQp3YXJuaW5ncyBhcyB3ZWxsLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJl ZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXlu ZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K