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 11D81C83005 for ; Mon, 12 Jun 2023 11:38:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233109AbjFLLiX (ORCPT ); Mon, 12 Jun 2023 07:38:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234292AbjFLLh6 (ORCPT ); Mon, 12 Jun 2023 07:37:58 -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 90D5C7D9C for ; Mon, 12 Jun 2023 04:22:29 -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-261-YAv902QKNE-1ixxPiO8tQA-1; Mon, 12 Jun 2023 12:22:27 +0100 X-MC-Unique: YAv902QKNE-1ixxPiO8tQA-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Mon, 12 Jun 2023 12:22:15 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Mon, 12 Jun 2023 12:22:15 +0100 From: David Laight To: 'Borislav Petkov' , Breno Leitao CC: "tglx@linutronix.de" , "pawan.kumar.gupta@linux.intel.com" , "paul@paul-moore.com" , "leit@meta.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] cpu/bugs: Disable CPU mitigations at compilation time Thread-Topic: [PATCH] cpu/bugs: Disable CPU mitigations at compilation time Thread-Index: AQHZmviQI/r0/Sv4xEqYGehxHbaKRa+HB92A Date: Mon, 12 Jun 2023 11:22:15 +0000 Message-ID: <543116e1a8cf4b7a8b086c850374f99e@AcuMS.aculab.com> References: <20230203120615.1121272-1-leitao@debian.org> <20230609173343.GDZINid4EgJGnkW7HK@fat_crate.local> In-Reply-To: <20230609173343.GDZINid4EgJGnkW7HK@fat_crate.local> 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 RnJvbTogQm9yaXNsYXYgUGV0a292DQo+IFNlbnQ6IDA5IEp1bmUgMjAyMyAxODozNA0KPiANCj4g T24gRnJpLCBGZWIgMDMsIDIwMjMgYXQgMDQ6MDY6MTVBTSAtMDgwMCwgQnJlbm8gTGVpdGFvIHdy b3RlOg0KPiA+IFJpZ2h0IG5vdyBpdCBpcyBub3QgcG9zc2libGUgdG8gZGlzYWJsZSBDUFUgdnVs bmVyYWJpbGl0aWVzIG1pdGlnYXRpb25zDQo+ID4gYXQgYnVpbGQgdGltZS4gTWl0aWdhdGlvbiBu ZWVkcyB0byBiZSBkaXNhYmxlZCBwYXNzaW5nIGtlcm5lbA0KPiA+IHBhcmFtZXRlcnMsIHN1Y2gg YXMgJ21pdGlnYXRpb25zPW9mZicuDQo+ID4NCj4gPiBDcmVhdGUgYSBuZXcgY29uZmlnIG9wdGlv biAoQ09ORklHX0NQVV9NSVRJR0FUSU9OU19ERUZBVUxUX09GRikgdGhhdA0KPiA+IHNldHMgdGhl IGdsb2JhbCB2YXJpYWJsZSBgY3B1X21pdGlnYXRpb25zYCB0byBPRkYsIGluc3RlYWQgb2YgQVVU Ty4gVGhpcw0KPiA+IGFsbG93cyB0aGUgY3JlYXRpb24gb2Yga2VybmVsIGJpbmFyaWVzIHRoYXQg Ym9vdHMgd2l0aCB0aGUgQ1BVDQo+ID4gbWl0aWdhdGlvbnMgdHVybmVkIG9mZiBieSBkZWZhdWx0 LCBhbmQgZG9lcyBub3QgcmVxdWlyZSBkZWFsaW5nIGtlcm5lbA0KPiA+IHBhcmFtZXRlcnMuDQo+ IA0KPiBXaGF0J3MgdGhlIHJlYWwtbGlmZSB1c2UgY2FzZSBmb3IgdGhpcz8NCg0KSSBjYW4gZGVm aW5pdGVseSBqdXN0aWZ5IGNvbXBpbGluZyB0aGVtIGFsbCBvdXQuDQpGb3IgaW5zdGFuY2UgZW1i ZWRkZWQgc3lzdGVtcyB3aXRoIGxpbWl0ZWQgdXNlcnNwYWNlIGFuZA0KKHByZXR0eSBtdWNoKSBl dmVyeXRoaW5nIHJ1bm5pbmcgYXMgcm9vdC4NCg0KQ29tcGlsaW5nIHRoZW0gb3V0IGdpdmVzIGJl dHRlciBjb2RlIHRoYW4gcGF0Y2hpbmcgdGhlbSBvdXQNCmR1cmluZyBib290Lg0KSSd2ZSBzdG9w cGVkIHVwZGF0aW5nIGFuIExUUyBrZXJuZWwgYmVjYXVzZSBJIHJlYWxseSBkb24ndA0Kd2FudC9u ZWVkIGFueSBvZiB0aGUgbWl0aWdhdGlvbnMgLSBlc3BlY2lhbGx5IHRoZSBvbmVzDQphc3NvY2lh dGVkIHdpdGggJ3JldCcgaW5zdHJ1Y3Rpb25zLg0KVGhleSBhcmUgZmFyIG1vcmUgcGVydmFzaXZl IHRoYW4gdGhlIG9uZXMgZm9yIGluZGlyZWN0IGp1bXBzLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0 ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBL ZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K