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SubjectRe: Aw: Re: [tpmdd-devel] [PATCH] tpm: improve tpm_tis send() performance by ignoring burstcount
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On 8/9/2017 5:00 PM, Peter Huewe wrote:
>
> Since we are the linux kernel, we do have to care for legacy
> devices. And a system with LPC, PS2Mouse on SuperIO and a TPM are not
> that uncommon.
>
> And heck, we even have support for 1.1b TPM devices....

Understood. However, remember that SuperIO is a 1980's device that
predates the TPM. Since the TPM requires special LPC bus cycles, it's
even less likely that an old chipset has an attached TPM.

> Interesting - let me check with Georg tomorrow. Unfortunately I do
> not have access to my tcg mails from home (since I'm not working :),
> but did you _explicitly_ talk about LPC and the system? I'm sure the
> TPM does not care about the waitstates...

Yes, Infineon was one of the 3 TPM vendors who confirmed this.


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