The previous patch created a new instance SecTpmMeasurementLibTdx, which is not 
a best idea.

If we can use the existing instance, there is no need to create a new one. Just 
create a new instance.

Thank you
Yao Jiewen

> -----Original Message-----
> From: Gerd Hoffmann <[email protected]>
> Sent: Tuesday, June 7, 2022 6:35 PM
> To: Xu, Min M <[email protected]>
> Cc: [email protected]; Yao, Jiewen <[email protected]>; Wang, Jian J
> <[email protected]>; Aktas, Erdem <[email protected]>; James
> Bottomley <[email protected]>; Tom Lendacky <[email protected]>
> Subject: Re: [PATCH 0/3] Introduce SecTpmMeasurementLibTdx
> 
> On Sun, Jun 05, 2022 at 09:02:45AM +0800, Min Xu wrote:
> > SecTpmMeasurementLibTdx is an instance of TpmMeasurement lib in SEC
> phase.
> > It provides RTMR based measurement functions for Intel Tdx guest.
> >
> > Commit a708536dce introduces SecMeasurementLibTdx which provides the
> same
> > functions. But it is not an instance of TpmMeasurementLib.
> > We have updated DxeTpmMeasurementLib (which is an instance of
> > TpmMeasurementLib) to support RTMR based measurement. To make the
> design
> > consistent, SecTpmMeasurementLibTdx is introduced. After that
> > SecMeasurementLibTdx is removed.
> 
> So, what is the difference?  Just make the calling convention compatible
> with TpmMeasurementLib?
> 
> take care,
>   Gerd



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