linux-kernel - Re: [PATCH v7 0/5] Add Intel IOMMU debugfs support

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Message-ID: <1519285717.2388.11.camel@debian.org>
Date:   Thu, 22 Feb 2018 08:48:37 +0100
From:   Yves-Alexis Perez <corsac@...ian.org>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     "Raj, Ashok" <ashok.raj@...el.com>, Joerg Roedel <joro@...tes.org>,
        Sohil Mehta <sohil.mehta@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [PATCH v7 0/5] Add Intel IOMMU debugfs support

On Tue, 2018-02-20 at 14:25 -0800, Jacob Pan wrote:
> I didn't know about chipsec but reading the code seems to rely on an
> out-of-tree kernel module. I don't think it matches what we need here.

Yes good indeed, I had forgot about that. Maybe the userland part is still
useful, but there's definitely a need for (protected) access to privileged
memory (and access to /dev/mem is less practical than debugfs, I guess).

Regards,
-- 
Yves-Alexis
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