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 CA246C77B60 for ; Sun, 30 Apr 2023 11:59:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230335AbjD3L7Y (ORCPT ); Sun, 30 Apr 2023 07:59:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229478AbjD3L7W (ORCPT ); Sun, 30 Apr 2023 07:59:22 -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 5EFD72693 for ; Sun, 30 Apr 2023 04:59:21 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-403-6JDYqp_lNlWX5TmoN08BwA-1; Sun, 30 Apr 2023 12:59:18 +0100 X-MC-Unique: 6JDYqp_lNlWX5TmoN08BwA-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Sun, 30 Apr 2023 12:59:17 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Sun, 30 Apr 2023 12:59:17 +0100 From: David Laight To: 'Josh Poimboeuf' , Oleg Nesterov CC: Peter Zijlstra , Thomas Gleixner , Vernon Lovejoy , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] x86/show_trace_log_lvl: ensure stack pointer is aligned, again Thread-Topic: [PATCH] x86/show_trace_log_lvl: ensure stack pointer is aligned, again Thread-Index: AQHZei1BLgvPQksxmEaOh5pjR+4dkK9DwORQ Date: Sun, 30 Apr 2023 11:59:17 +0000 Message-ID: References: <20230427140054.GA17800@redhat.com> <20230428043158.r5omehiaqawcac2y@treble> <20230428065513.GA22111@redhat.com> <20230428235747.b5smutdttv5eeopi@treble> In-Reply-To: <20230428235747.b5smutdttv5eeopi@treble> 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogSm9zaCBQb2ltYm9ldWYNCj4gU2VudDogMjkgQXByaWwgMjAyMyAwMDo1OA0KPiANCj4g T24gRnJpLCBBcHIgMjgsIDIwMjMgYXQgMDg6NTU6MTNBTSArMDIwMCwgT2xlZyBOZXN0ZXJvdiB3 cm90ZToNCj4gPiBPbiAwNC8yNywgSm9zaCBQb2ltYm9ldWYgd3JvdGU6DQo+ID4gPg0KPiA+ID4g T24gVGh1LCBBcHIgMjcsIDIwMjMgYXQgMDQ6MDA6NTRQTSArMDIwMCwgT2xlZyBOZXN0ZXJvdiB3 cm90ZToNCj4gPiA+ID4gKwlzdGFjayA9IFBUUl9BTElHTihzdGFjaywgc2l6ZW9mKGxvbmcpKTsN Cj4gPiA+ID4gIAlmb3IgKCA7IHN0YWNrOyBzdGFjayA9IFBUUl9BTElHTihzdGFja19pbmZvLm5l eHRfc3AsIHNpemVvZihsb25nKSkpIHsNCj4gPiA+ID4gIAkJY29uc3QgY2hhciAqc3RhY2tfbmFt ZTsNCj4gPiA+DQo+ID4gPiBTZWVtcyByZWFzb25hYmxlLCB0aG91Z2ggJ3N0YWNrJyBpcyBhbHJl YWR5IGluaXRpYWxpemVkIGEgZmV3IGxpbmVzDQo+ID4gPiBhYm92ZSB0aGlzLCBzbyBpdCB3b3Vs ZCBiZSBjbGVhbmVyIHRvIGRvIHRoZSBQVFJfQUxJR04gdGhlbi4gIE9yIGV2ZW4NCj4gPiA+IGJl dHRlciwganVzdCBtb3ZlIGl0IGFsbCB0byB0aGUgZm9yIGxvb3A6DQo+ID4gPg0KPiA+ID4gCWZv ciAoc3RhY2sgPSBQVFJfQUxJR04oc3RhY2sgPyA6IGdldF9zdGFja19wb2ludGVyKHRhc2ssIHJl Z3MpKTsNCj4gPiA+IAkgICAgIHN0YWNrOw0KPiA+ID4gCSAgICAgc3RhY2sgPSBQVFJfQUxJR04o c3RhY2tfaW5mby5uZXh0X3NwLCBzaXplb2YobG9uZykpKSB7DQo+ID4NCj4gPiBXZSBkZWNpZGVk IHRvIG1ha2UgdGhlIHNpbXBsZXN0IG9uZS1saW5lciBmaXgsIGJ1dCBJIHdhcyB0aGlua2luZyBh Ym91dA0KPiA+DQo+ID4gCWZvciAoIHN0YWNrID0gc3RhY2sgPyA6IGdldF9zdGFja19wb2ludGVy KHRhc2ssIHJlZ3MpOw0KPiA+IAkgICAgIChzdGFjayA9IFBUUl9BTElHTihzdGFjaywgc2l6ZW9m KGxvbmcpKSk7DQo+ID4gCSAgICAgIHN0YWNrID0gc3RhY2tfaW5mby5uZXh0X3NwKQ0KPiA+IAl7 DQo+ID4gCQkuLi4NCj4gPg0KPiA+IHRvIGZhY3RvdXQgb3V0IHRoZSBhbm5veWluZyBQVFJfQUxJ R04oKS4gV2lsbCBpdCB3b3JrIGZvciB5b3U/DQo+IA0KPiBJJ2QgcmF0aGVyIG5vdCwgdGhhdCdz IGEgbGl0dGxlICp0b28qIGNsZXZlciwgSU1PLg0KDQpJJ2QgbGVhdmUgdGhlIGluaXRpYWxpc2F0 aW9uIG91dHNpZGUgdGhlIGxvb3AgYW5kIG1vdmUNCnRoZSBQVFJfQUxJR04oKSBpbnRvIHRoZSBs b29wIHNvIHRoYXQgdGhlICdmb3InIGZpdHMgb24gb25lIGxpbmU6DQoJaWYgKCFzdGFjaykNCgkJ c3RhY2sgPSBnZXRfc3RhY2tfcG9pbnRlcih0YXNrLCByZWdzKTsNCglmb3IgKDsgc3RhY2s7IHN0 YWNrID0gc3RhY2tfaW5mby5uZXh0X3NwKSB7DQoJCWNvbnN0IGNoYXIgLi4uDQoJCXN0YWNrID0g UFRSX0FMSUdOKHN0YWNrLCBzaXplb2YobG9uZykpOw0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJl ZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXlu ZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K