linux-kernel - Re: [PATCH] Platform integrity information in sysfs

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Message-ID: <CAFmMkTFXaU64JzWoc2cFYE9i8hXjfAwRy8Ct0_9EWV_PSJPi6w@mail.gmail.com>
Date:   Thu, 3 Sep 2020 13:35:30 -0300
From:   Daniel Gutson <daniel@...ypsium.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Derek Kiernan <derek.kiernan@...inx.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Richard Hughes <hughsient@...il.com>,
        Alex Bazhaniuk <alex@...ypsium.com>
Subject: Re: [PATCH] Platform integrity information in sysfs

On Thu, Sep 3, 2020 at 1:27 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Thu, Sep 03, 2020 at 01:18:04PM -0300, Daniel Gutson wrote:
> > This patch exports information about the platform integrity
> > firmware configuration in the sysfs filesystem.
> > In this initial patch, I include some configuration attributes
> > for the system SPI chip.
> >
> > This initial version exports the BIOS Write Enable (bioswe),
> > BIOS Lock Enable (ble), and the SMM BIOS Write Protect (SMM_BWP)
> > fields of the BIOS Control register. The idea is to keep adding more
> > flags, not only from the BC but also from other registers in following
> > versions.
> >
> > The goal is that the attributes are avilable to fwupd when SecureBoot
> > is turned on.
> >
> > The patch provides a new misc driver, as proposed in the previous patch,
> > that provides a registration function for HW Driver devices to register
> > class_attributes.
> > In this case, the intel SPI flash chip (intel-spi) registers three
> > class_attributes corresponding to the fields mentioned above.
> >
> > This version of the patch provides a new API supporting regular
> > device attributes rather than custom attributes, and also avoids
> > a race condition when exporting the driver sysfs dir and the
> > attributes files inside it.
> > Also, this patch renames 'platform lockdown' by 'platform integrity'.
> >
> > Signed-off-by: Daniel Gutson <daniel.gutson@...ypsium.com>
> > ---
>
> Always version your patches, there's no way this is "v1", right?

Sorry, I thought the version was reseted after the title changed.

>
> greg k-h



-- 
Daniel Gutson
Argentina Site Director
Enginieering Director
Eclypsium

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