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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 1E6FDC43381 for ; Tue, 19 Jan 2021 12:21:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4F1F23104 for ; Tue, 19 Jan 2021 12:21:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392726AbhASMTD (ORCPT ); Tue, 19 Jan 2021 07:19:03 -0500 Received: from mx2.suse.de ([195.135.220.15]:50782 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404226AbhASMMv (ORCPT ); Tue, 19 Jan 2021 07:12:51 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1611058325; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=saQvCDaldXcs7FVnWcHYWWXIeWtmeguqFpHLMVKBPkI=; b=VDq5A9NmLAAduXcIPMoZxzQp46sB4/zrxqhCmeFYebCSl2fFvdLUVX4rlg2N6E+65mnTiJ yuZBRLN7TaEZE1Av3ThpPAT+r2VuHEaqJwBFml64xyPGsDSDV9D8Ro2PV3yxKUpiM/0Pie mC/Kjvgl9RLgoJCThqWQL+/eAX035ZA= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 3B708AC6E; Tue, 19 Jan 2021 12:12:05 +0000 (UTC) Subject: Re: [PATCH v3 07/15] x86/alternative: support "not feature" and ALTERNATIVE_TERNARY To: Borislav Petkov Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" References: <20201217093133.1507-1-jgross@suse.com> <20201217093133.1507-8-jgross@suse.com> <20210107190819.GI14697@zn.tnic> <5ed34a1d-86c4-ed03-4c92-b275a555c41c@suse.com> <20210119120647.GJ27433@zn.tnic> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <76e70343-e9f6-9054-4fd1-703821fe77df@suse.com> Date: Tue, 19 Jan 2021 13:12:04 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.1 MIME-Version: 1.0 In-Reply-To: <20210119120647.GJ27433@zn.tnic> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="5exeZXOiKxc0mcAMcs5PgXUIG1AxQnHpb" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --5exeZXOiKxc0mcAMcs5PgXUIG1AxQnHpb Content-Type: multipart/mixed; boundary="6QfW8sVIPdAg7gsqxAxufzWHk0ksf5b6n"; protected-headers="v1" From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= To: Borislav Petkov Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Message-ID: <76e70343-e9f6-9054-4fd1-703821fe77df@suse.com> Subject: Re: [PATCH v3 07/15] x86/alternative: support "not feature" and ALTERNATIVE_TERNARY References: <20201217093133.1507-1-jgross@suse.com> <20201217093133.1507-8-jgross@suse.com> <20210107190819.GI14697@zn.tnic> <5ed34a1d-86c4-ed03-4c92-b275a555c41c@suse.com> <20210119120647.GJ27433@zn.tnic> In-Reply-To: <20210119120647.GJ27433@zn.tnic> --6QfW8sVIPdAg7gsqxAxufzWHk0ksf5b6n Content-Type: multipart/mixed; boundary="------------A424C7B79701C35F1CE50638" Content-Language: en-US This is a multi-part message in MIME format. --------------A424C7B79701C35F1CE50638 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 19.01.21 13:06, Borislav Petkov wrote: > On Tue, Jan 19, 2021 at 12:35:42PM +0100, J=C3=BCrgen Gro=C3=9F wrote: >> In fact this should rather be named "X86_FEATURE_TRUE", as this is its= >> semantics. >> >> And I think I can define it to the value 0xffff instead of using a >> "real" bit for it. >=20 > A real bit is cheap - a special value to pay attention to in the future= > not so much. Also we do have X86_FEATURE_ALWAYS already which has a > similar purpose... >=20 Oh, well hidden. :-) I'll use that one. 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