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

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Date:   Thu, 3 Sep 2020 18:27:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Daniel Gutson <daniel.gutson@...ypsium.com>
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@...r.kernel.org, Richard Hughes <hughsient@...il.com>,
        Alex Bazhaniuk <alex@...ypsium.com>
Subject: Re: [PATCH] Platform integrity information in sysfs

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?

greg k-h