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

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Date:   Thu, 10 Nov 2022 01:40:46 -0800
From:   Sohil Mehta <sohil.mehta@...el.com>
To:     "Joseph, Jithu" <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

On 11/9/2022 5:22 PM, Joseph, Jithu wrote:

> Here is the layout of the metadata section in an IFS test image.
> Test Data (chunks) follow the struct meta_data  defined in load.c
> 

Thanks, this helps clarify things around the test data placement in this 
patch. I think it would be useful to include the below information in 
the commit message as well.

Given that,

Reviewed-by: Sohil Mehta <sohil.mehta@...el.com>

>      IFS Metadata layout
>     +----------------------+  0
>     |META_TYPE_IFS (=1)    |
>     +----------------------+
>     |meta_size             |
>     +----------------------+
>     |test type             |
>     +----------------------+
>     |fusa info             |
>     +----------------------+
>     |total images          |
>     +----------------------+
>     |current image#        |
>     +----------------------+
>     |total chunks          |
>     +----------------------+
>     |starting chunk        |
>     +----------------------+
>     |size per chunk        |
>     +----------------------+
>     |chunks per stride     |
>     +----------------------+
>     |Reserved[54]          |
>     +----------------------+ 256
>     |                      |
>     |                      |
>     |                      |
>     |                      |
>     |Test Data/Chunks      |
>     |                      |
>     |                      |
>     |                      |
>     |                      |
>     +----------------------+  meta_size
>     |   META_TYPE_END (=0) |
>     +----------------------+  meta_size + 4
>     |   size of end (=8)   |
>     |                      |
>     +----------------------+  meta_size + 8
> 
> 
> Jithu