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 BD20EC04A6A for ; Tue, 15 Aug 2023 08:27:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235674AbjHOI0i (ORCPT ); Tue, 15 Aug 2023 04:26:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235629AbjHOI0P (ORCPT ); Tue, 15 Aug 2023 04:26:15 -0400 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 535C8B3 for ; Tue, 15 Aug 2023 01:26:11 -0700 (PDT) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id C7C4A40E0197; Tue, 15 Aug 2023 08:26:09 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id oC7Aen0r7e2r; Tue, 15 Aug 2023 08:26:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1692087964; bh=SLjMpJVf4Lp7hv2TydLocpzoAwt5EI3fFCwqsC3/CBY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PtExnofD1O9WOuvajglriYuZbcV8ASLIaEVBKeWl43tqIszAgqhwRPh6Y9JJsUWtJ JUyZ/OLkj+BmhFgg0SW4wXr2At2FAYGfLNWRMLSabvR8EI0DrWGRW8dYpaGFJt01lc /mr5d2uDMcUcuN4m1cTzQdbv7xS84d/3hW2RDVi/sl8oT/ha5wE+1ZtGziPVk2MghK CxTT91qEC3juv1iXWtbzrmH5hwfvXfTWPba/TrfP/bBRHwgwJfbtVT5FDBtYN7g3TY uYtdov/h9ldyQGORBlXMP9L71XiO+fhaZfVBOfWXuA7WA+W6DBslT/gOBzebGBgDZ1 z7w0oEOUQDBTyVFZBJkdld72sp+hOP0ePO/NrRKXutuYgy7aMytamL/QiUY2R7EyTk ZTlyyANWWHrHPTJXtVEja+Iys0I+VdN2YpjIqxfVsF9s+IfxyHccQKKtAsLHfuN0jj AJcgGJONFOtd8tZDVyt3/9Wiwr0gqw1tihG67f/iPmNhyjwqlcflQdAj9RNBOoBp8x 5su7Bn/HrgQ9ukIIc+TJPM4g/sowUenX4Wci6UDyqHWKgJTNBECOU0t/EokLarVACt 16iFR/rHvqntp0AR1lKD+xb9G0ljhfak99jBQAKyk/e0t9AAuWiD0soqseEoQG5wLF B/aTyqFLKxtQzkguq7FxsUoQ= Received: from zn.tnic (pd9530d32.dip0.t-ipconnect.de [217.83.13.50]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 5A0EB40E0196; Tue, 15 Aug 2023 08:25:57 +0000 (UTC) Date: Tue, 15 Aug 2023 10:25:51 +0200 From: Borislav Petkov To: Josh Triplett Cc: Thomas Gleixner , LKML , x86@kernel.org, Ashok Raj , Arjan van de Ven , Nikolay Borisov Subject: Re: [patch V2 02/37] x86/microcode: Hide the config knob Message-ID: <20230815082551.GAZNs2j/fUUOuahpx9@fat_crate.local> References: <20230812194003.682298127@linutronix.de> <20230812195727.660453052@linutronix.de> <20230814211912.GMZNqaUD6FriYo1wOo@fat_crate.local> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 14, 2023 at 04:57:30PM -0700, Josh Triplett wrote: > Multiple reasons. First, because "a couple more KBs" (concretely, 4637 > bytes in this case) add up across the kernel. Sure, if it were not really core. But this is core code. This is used on practically every baremetal x86 machine out there. You have other core code which is not used on virt either but that doesn't mean we'll axe it off on virt with a Kconfig option just to save a couple of KBs. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette