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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92D09C433EF for ; Tue, 9 Nov 2021 10:30:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 79991610FF for ; Tue, 9 Nov 2021 10:30:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245340AbhKIKdN (ORCPT ); Tue, 9 Nov 2021 05:33:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245323AbhKIKc4 (ORCPT ); Tue, 9 Nov 2021 05:32:56 -0500 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 928BCC061766 for ; Tue, 9 Nov 2021 02:30:10 -0800 (PST) Received: by mail-wr1-x429.google.com with SMTP id t30so32087627wra.10 for ; Tue, 09 Nov 2021 02:30:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=immu-ne.20210112.gappssmtp.com; s=20210112; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-transfer-encoding:content-disposition; bh=MfHxJl5a6auNvNFSJ7rg1Gf81R9mZfjH7HTWxoZ/5G0=; b=0/vArSvCwEu3G9LIyqv5w8ArrzCbHLtzXuKaog7D4my9z8GI1I9RVqTMwLeTPkeZWM mW4I5lBV7rFZTY8olzrkDgcE55U6BiaIBKdF/Vr3JqlgRy+jGxTGeuxtwCyVSaMFm6ry FOKxFRTjfd11wb6i75STiqoqpwhhNCRakWeIbiWt0LLhty13cRsMR1dJSRIbRlSlGpsR wHDf8LkYUo/cBCkx4FNFGobOUJik483qiT0AyF+5mD9sjlorkzvSSp/f/0hY9Jf6VPtF 9Ibs57mwkqTfKmYK3vLqI+D4d2dpEsvrdy7NFFjSGaggmpJhDVW56xprcwmAcGKFXo9L mAMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:content-transfer-encoding :content-disposition; bh=MfHxJl5a6auNvNFSJ7rg1Gf81R9mZfjH7HTWxoZ/5G0=; b=uba03OP/vVjhJOrPm/l2lNVf7ksEQmp5TZL0i5qOLtY0ElRnILYybgcXnK8r7cWPMl AsFT9us2BGEv8sGH7yjV1/XmYJr7xdU3qrrY6Q9XBD0BjzsgQUnTfM+17Zvjdwhayhdv DAAseVjJBhoGDflKHFttAb4hT7w1XSzqJJb1wNTajmRYA8lMYq3wo7t4HMhCX6iteKJr WyLZkUo2ykfPvZp7gXCzSAzOIQkcedAfFyU+aPitj4ydRCN4UKDXHHZT9WkkKbHepxa8 fy1tKxbyDg+gQPsGnJ/FvnOrRu8AwEAQfDcNLzkXLmD8ozZ9QUJkUN02Vyp7ZV24TbnC 2gEQ== X-Gm-Message-State: AOAM533vJZoJ6EVRWq2KtoNfK+DjKEf4qt4l/rOWhWgSfWC3RYj5FvUm V4OHCXRzLJL01P3nFyYiutp5aQ== X-Google-Smtp-Source: ABdhPJzN8THOHqvkX+1aIcikWUkFt1UOpd4MA5jJv58ReOK0cNxpt57XaqOcBPqkiLMdgU8y+axNGA== X-Received: by 2002:adf:ded0:: with SMTP id i16mr8047576wrn.335.1636453808864; Tue, 09 Nov 2021 02:30:08 -0800 (PST) Received: from Haruhi ([185.254.75.37]) by smtp.gmail.com with ESMTPSA id t9sm21192654wrx.72.2021.11.09.02.30.06 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 09 Nov 2021 02:30:08 -0800 (PST) Date: Tue, 9 Nov 2021 11:30:06 +0100 From: Philipp Deppenwiese To: Greg KH Cc: Hans-Gert Dahmen , "=?utf-8?Q?akpm=40linux-foundation.org?=" , "=?utf-8?Q?linux-kernel=40vger.kernel.org?=" , "=?utf-8?Q?mauro.lima=40eclypsium.com?=" , "=?utf-8?Q?hughsient=40gmail.com?=" , "=?utf-8?Q?platform-driver-x86=40vger.kernel.org?=" Message-ID: In-Reply-To: References: Subject: Re: [PATCH] firmware: export x86_64 platform flash bios region via sysfs X-Mailer: Mailspring MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greg, sorry for the previous html email, totally forgot kernel ml was plain text only. Just some feedback regarding the use case for the interface. As you may know the firmware (BIOS/UE=46I/coreboot) is growing massively in the last= few years. So we have now 32MB of firmware on a normal x86 system. The interface shall be used as safe and secure method to get the first 16MB read-only copy of the firmware. The interface from Intel is read-only so we shouldn't introduce any security issues here. Aside from us there is fwupd.org=C2=A0and another company which are interested in the interface as well. We have added Richard from Redhat to the CC. We use the interface mainly for firmware analysis and TPM PCR pre-calculation features in our SaaS product. I hope that resolves your questions :).=C2=A0Let me know if you want to discuss more. =40Hans-Gert can you deliver the documentation, otherwise I can help out.= Greetings Philipp On Nov. 9 2021, at 11:24 am, Greg KH wrote= : > On Tue, Nov 09, 2021 at 11:06:07AM +0100, Philipp Deppenwiese wrote: >> Hi Greg, > =20 > > =20 > Sorry, html email is rejected by the mailing lists. Please fix your > email client to send text-only email and I will be glad to respond. > =20 > thanks, > =20 > greg k-h >