Re: [PATCH for-4.22 v2] acpi: Set TPM2 LAML to actual log area size

["Tu Dinh" <ngoc-tu.dinh@xxxxxxxxxx>]

On 06/11/2025 13:10, Jan Beulich wrote:
> On 05.11.2025 01:03, Tu Dinh wrote:
>> The LAML field should follow the TCG PFP specification:
>>
>> The TCG ACPI specification uses the field name "Log Area Minimum
>> Length", but the field value is the actual log area length reserved by
>> Platform Firmware, not a lower bound.
>
> And this is said where? Even the field description (ACPI 6.5) reads 
> "Identifies
> the minimum length (in bytes) of the system’s preboot CC event log area." (I
> agree it makes little sense that way, but the change still needs proper
> explanation.)
>
> Jan

The above is an exact quote from the "TCG PC Client Platform Firmware
Profile Specification Version 1.06 Revision 52".


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Ngoc Tu Dinh | Vates XCP-ng Developer

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