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 A895AC433EF for ; Mon, 9 May 2022 19:40:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240635AbiEIToc (ORCPT ); Mon, 9 May 2022 15:44:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231781AbiEITo2 (ORCPT ); Mon, 9 May 2022 15:44:28 -0400 Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC68B17706D; Mon, 9 May 2022 12:40:32 -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 8BA8B1EC0494; Mon, 9 May 2022 21:40:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1652125226; 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=AoQvWKpDU2P9lFLXU3ELvlGMrlfk5EWwWkEu8isye3M=; b=DQuH+dnuMo1XHCdc4ZpdApzMaFQlpLltEumRjTO50gpT+YcXRQwzFwSB5wJ2DyhUWQ/HFz KZ50vFjPK3Eo8Oo0PNr+rFPebrt+K0CRHG4cS6DBsf7DllxhAOeBaeyMX23V+ApO6wOyW5 8OnulC85syhrH2iJiEvQ95QtbvZ2bOo= Date: Mon, 9 May 2022 21:40:28 +0200 From: Borislav Petkov To: Jonathan McDowell Cc: Thomas Gleixner , James Morris , Ingo Molnar , Dave Hansen , "H. Peter Anvin" , Dmitry Kasatkin , "x86@kernel.org" , Mimi Zohar , "Serge E. Hallyn" , "linux-kernel@vger.kernel.org" , "linux-integrity@vger.kernel.org" , "linux-security-module@vger.kernel.org" Subject: Re: [PATCH v2] Carry forward IMA measurement log on kexec on x86_64 Message-ID: References: <0960C132-581C-4881-8948-C566657C3998@alien8.de> 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, May 09, 2022 at 06:41:17PM +0000, Jonathan McDowell wrote: > I'm not tied to setup_data but given the concerns I raise above with > device tree on x86 and the need to handle this in the kernel it seemed > like a reasonable first approach. You seem to be saying it's not and > either adding the device tree infrastructure or doing a command line > hack would be preferable? All I'm doing is asking more questions to make you give more details as to why you wanna do it this way. I'll take a detailed look tomorrow but it looks ok from a quick glance. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette