Re: [PATCH 1/1] tpm: disable hwrng for fTPM on some AMD designs

[Linus Torvalds]

On Mon, 31 Jul 2023 at 14:57, Limonciello, Mario
<mario.limonciello@xxxxxxx> wrote:
>
> Are you thinking then to unregister the tpm hwrng "sometime" after boot?

No, I was more thinking that instead of registering it as a randomness
source, you'd just do a one-time

    tpm_get_random(..);
    add_hwgenerator_randomness(..);

and leave it at that.

Even if there is some stutter due to some crazy firmware
implementation for reading the random data, at boot time nobody will
notice it.

           Linus