Received: by 2002:a05:6358:11c7:b0:104:8066:f915 with SMTP id i7csp2426968rwl; Sat, 1 Apr 2023 07:35:46 -0700 (PDT) X-Google-Smtp-Source: AKy350bgKqqgnwhpliFM5ki56Sw0yzmAT9rVlKp78HoCb9+qEGBvBp3DoHhQ919P7USf+gaVIaA+ X-Received: by 2002:a05:6402:450:b0:4fa:e8f3:9685 with SMTP id p16-20020a056402045000b004fae8f39685mr28929129edw.28.1680359746642; Sat, 01 Apr 2023 07:35:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680359746; cv=none; d=google.com; s=arc-20160816; b=e3NrCzJTddWPy4HVnXbe7uWm7aqrgAzla/BwqfkSLAdyzKl6N4LUzeqZzWgsA5OFMo yZhf1K8Dbr6OdqAn1Bv3+GsEBOkT93GVcpfToM+5NMqwRlRntjxmA5fhoZAdLIRd6ceu tinzIdZfZKeiVaO+ZjtQ/myvMMUJmZmTv6nw5rZaqnEh1ZKSvVz3CVQOqz5vxeUs1FFv PFS3X7xni3AZBjLkvUdnR/YFJ1LwMBJDo0kVoRHuuj+ErhZFY1aFi7uKYJCvtFsAaejB Qaxr/RfwqQLdIrRJgxce5iaA44JQDoDGE65hHVdfejPzOeUqA0e+xkJj3k6mHowA+tTn YITA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=3B+zsaPtlmltz8XFOiurt9dC/urcpVERHr2urY/O8Ds=; b=WdnWn/wTQZdmfvyWmm5rsZjt8JlaR47RpegzWJjStDRc/z8GMJJx36tMZS3OkgaRxX acQ4jK1NkorETYSIV19E6i+CqbxqgjXMi9ZqfXHAkZ/xmddP61xI/uuvLQO7sd+BvMZh djzpW54BFwEfSRY3efJwyjI/YR5r8gP15f2rVyuyC9uflGCpTozQ9SEbyeByBqgS1Cbj Tgem+2HzdTcQSt0ao2ANmoAsgzP1zeo3e6zBdWGaQOMGKx7GOSg44xtWUdZAFSD/9MND ulUDx2QyT3zf43sHZACoC5LEPPjOYMrg4al38LDCHz4PPqKKEgdqGluNw7Y0Ms7s6DXN YRug== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=rCbUHfLQ; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n23-20020a05640206d700b004fac80816a7si1479853edy.183.2023.04.01.07.35.22; Sat, 01 Apr 2023 07:35:46 -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=rCbUHfLQ; 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 S229675AbjDAO0b (ORCPT + 99 others); Sat, 1 Apr 2023 10:26:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229502AbjDAO0a (ORCPT ); Sat, 1 Apr 2023 10:26:30 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1473AD30 for ; Sat, 1 Apr 2023 07:26:28 -0700 (PDT) Received: from zn.tnic (p5de8e687.dip0.t-ipconnect.de [93.232.230.135]) (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 F193C1EC03DB; Sat, 1 Apr 2023 16:26:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1680359187; 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=3B+zsaPtlmltz8XFOiurt9dC/urcpVERHr2urY/O8Ds=; b=rCbUHfLQIrDqQAHr9N4KWxC/ieOe9VLRIMbt2hjb/YHVRdyMeFKgH/pyt7iO5xU2Ew9QNP 9UzFixbcTi7CJUMlpjq7rC1/vF5u0CnwLu2KbfPqYANXEJjb6EZOb78/xIgPx9rWvqIdZR pKwHTXHm1ggFaKhqxPpt/w2dpmTiMq4= Date: Sat, 1 Apr 2023 16:26:26 +0200 From: Borislav Petkov To: Juergen Gross Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Thomas Gleixner , Ingo Molnar , Dave Hansen , "H. Peter Anvin" Subject: Re: [PATCH v4 09/12] x86/mtrr: construct a memory map with cache modes Message-ID: <20230401142626.GDZCg/EsspWrd7BV1G@fat_crate.local> References: <20230306163425.8324-1-jgross@suse.com> <20230306163425.8324-10-jgross@suse.com> <20230331125740.GCZCbYxFkJOg8hIl6C@fat_crate.local> <73226c11-4443-1e52-4566-5799d21e4ccb@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <73226c11-4443-1e52-4566-5799d21e4ccb@suse.com> X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 Fri, Mar 31, 2023 at 03:35:07PM +0200, Juergen Gross wrote: > Hmm, this makes it much harder to see that the code really does nothing > if enabled isn't set. Both callsites in mtrr_bp_init() are behind such a check already. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette