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[23.128.96.19]) by mx.google.com with ESMTPS id x17-20020a7bc211000000b00393ebee0e19si6762003wmi.121.2022.05.13.19.16.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 May 2022 19:16:51 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=h17j89dq; spf=softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E6C884AD7C0; Fri, 13 May 2022 17:34:12 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346356AbiEKSgd (ORCPT + 99 others); Wed, 11 May 2022 14:36:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346355AbiEKSg3 (ORCPT ); Wed, 11 May 2022 14:36:29 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08B6B2715D for ; Wed, 11 May 2022 11:36:27 -0700 (PDT) Received: from zn.tnic (p5de8eeb4.dip0.t-ipconnect.de [93.232.238.180]) (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 062C21EC0535; Wed, 11 May 2022 20:36:21 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1652294181; 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=A270b9t9P5kCPcfe34jRXo9/Zav2yNHFkgsYFfjWaCk=; b=h17j89dq6s1q02WQMimA2WKWzxWZbCKfEfAVtNRbEytJkOdWStrRoMGKZuIbLgnN+6Prup VbPaFmOPO2XeDbp6K/ANGDwBm0YGH7xAw0LWWVvWsP9kkG7AR8zlH8rAa+MAHNc2LAWzeV sGsFWhzmxSPDzHgAetnWWFUROADFzAE= Date: Wed, 11 May 2022 20:36:24 +0200 From: Borislav Petkov To: Kees Cook Cc: Andy Lutomirski , x86@kernel.org, LKML , Florian Weimer Subject: Re: [PATCH] x86/vsyscall: Remove CONFIG_LEGACY_VSYSCALL_EMULATE Message-ID: References: <898932fe61db6a9d61bc2458fa2f6049f1ca9f5c.1652290558.git.luto@kernel.org> <202205111104.464A6619@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <202205111104.464A6619@keescook> X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no 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 Wed, May 11, 2022 at 11:04:55AM -0700, Kees Cook wrote: > Sounds legit! Can we switch the default to "none" while we're at it? I'd say one breakage at a time. :-) I am fearing us breaking some ancient crap with it and Andy assures me there shouldn't be anything except some ancient "pin" binary which has been fixed in the meantime. I'd say we can do the "none" by default thing but do it as a separate patch so that it can be reverted easily in case someone screams in a justified manner. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette