linux-kernel - Re: [PATCH v2 10/14] platform/x86/intel/ifs: Add metadata validation

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Message-ID: <a0f6723b-ecfa-ba5b-5779-c7326cd31a86@intel.com>
Date:   Wed, 9 Nov 2022 15:15:37 -0800
From:   Sohil Mehta <sohil.mehta@...el.com>
To:     Jithu Joseph <jithu.joseph@...el.com>, <hdegoede@...hat.com>,
        <markgross@...nel.org>
CC:     <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        <dave.hansen@...ux.intel.com>, <x86@...nel.org>, <hpa@...or.com>,
        <gregkh@...uxfoundation.org>, <ashok.raj@...el.com>,
        <tony.luck@...el.com>, <linux-kernel@...r.kernel.org>,
        <platform-driver-x86@...r.kernel.org>, <patches@...ts.linux.dev>,
        <ravi.v.shankar@...el.com>, <thiago.macieira@...el.com>,
        <athenas.jimenez.gonzalez@...el.com>
Subject: Re: [PATCH v2 10/14] platform/x86/intel/ifs: Add metadata validation

Jithu, I replied to the prior version of the series by mistake. 
Duplicating that comment over here.

On 11/7/2022 2:53 PM, Jithu Joseph wrote:
> The data portion of IFS test image file contains a metadata
> region containing possibly multiple metadata structures in
> addition to test data and hashes.
> 
> Introduce the layout of this meta_data structure and validate
> the sanity of certain fields of the new image before loading.
> 
> Tweak references to IFS test image chunks to reflect the updated
> layout of the test image.
> 

Can you provide some more information on the updated layout of the 
metadata structure?

Some parts of validate_ifs_metadata() like the ifs_test_image_ptr 
calculation would be easier to follow with that.