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[2620:137:e000::1:20]) by mx.google.com with ESMTP id q20-20020a170902e31400b001b3d426e32fsi1218304plc.119.2023.06.12.06.52.52; Mon, 12 Jun 2023 06:53:05 -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; dkim=pass header.i=@alien8.de header.s=dkim header.b=e+AGctKH; dkim=pass header.i=@alien8.de header.s=alien8 header.b=hasGth3i; 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=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233889AbjFLNco (ORCPT + 99 others); Mon, 12 Jun 2023 09:32:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229988AbjFLNcm (ORCPT ); Mon, 12 Jun 2023 09:32:42 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BFCE1E9 for ; Mon, 12 Jun 2023 06:32:41 -0700 (PDT) Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 5A7661EC040F; Mon, 12 Jun 2023 15:32:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1686576760; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=M8WvkyNjJkr8h4loqT04EVexnrcX1BJj9fmJ/m/uFNI=; b=e+AGctKHAz89SxMfUQLQc5bEVMBiLdUbdqK37OdAF2i05S3nuP0dNpvGwiqBA1gwrqFetV gK1RWbK5k3DduNjWfvbTWmXRdRknITsAFC8+iuAr1CltODuINMfvOSDukvtCx5rVQ0I1hl WPWiDi2gVhBoEs7l+tbKHJMB/qigYBM= 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 zLpbemDgxUEP; Mon, 12 Jun 2023 13:32:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1686576758; bh=M8WvkyNjJkr8h4loqT04EVexnrcX1BJj9fmJ/m/uFNI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hasGth3iQ4VtIjSp/bvNzxnZejWQioNFjdnfunukaVAiNTqNOu43NETPM37dPSiIb 7xhYyoRFTqdjj2Dg/Z+blwtheiq6sBIdaNOrQIA6Y56v07mXK7KtbMi+KKmxCgZtHm ANJI/kHGM3vtHKcuuN8XGHDaucLsAwii2CojYXrC25q5/Stg320mUcOWwecZJh6Xx9 HNEFs/FQ4m3di3h81jJoYz7mpWpomF3q0bRoecYQKoEGJRsIEa6jx9H76fEPS7n4hm zmrcjaXnrf3yB5PMK055VNe0xT4m7V1RJlC2Vn1Ukx128K0DmAToQXEn4EBjHKnSFt B+r5Yq19/Jlls44veBT6tVDAQJcdpWYfVsIB98tKxO89n6+Jwv4Y/YVTzp7cc7ilbw Kvr9nVc8Z/GX7gR1P1BkCXa1lQgkFi4qc/nqkTnKSwKbOvGzPNUk0mBjqB/Fey8Pos MK9hKs7QG2PE0glUIF0SPit6XRk0JWSpsbPVYBPU/QK+ht7f/1UVlhJv2Oq6bAiIwK yLzWUfdHgnv0aHOHwndJrPMtqTIsPZK/8YFwuixe7pDOYsapv20LIyGUJeJsZm3mI/ 9r5aWQ3+Y9gC19i5di3cREfukKxG8YQc1X7nU2XkJxzeAVFhBvLqxgjIq0wrchFn74 9Ie9ujvJuRs1gxgzJM1bRthk= Received: from zn.tnic (p200300ea971dc5f0329c23fffea6a903.dip0.t-ipconnect.de [IPv6:2003:ea:971d:c5f0:329c:23ff:fea6:a903]) (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 0377340E00EA; Mon, 12 Jun 2023 13:32:30 +0000 (UTC) Date: Mon, 12 Jun 2023 15:32:30 +0200 From: Borislav Petkov To: Breno Leitao Cc: Thomas Gleixner , 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 Message-ID: <20230612133230.GJZIcebkHxd8QJs0Dv@fat_crate.local> References: <20230203120615.1121272-1-leitao@debian.org> <87352z7xld.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE 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 On Mon, Jun 12, 2023 at 05:54:56AM -0700, Breno Leitao wrote: > 1) We keep consistency with other CONFIG options. Linux already has a > CONFIG option to enable/disable mitigations for speculations > (CONFIG_SPECULATION_MITIGATIONS), so, this will be a similar one. So you can get what you want by disabling all those options there, right? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette