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

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Message-Id: <CUE1Z76QDX0Z.2K0OU6TPMS50X@seitikki>
Date:   Fri, 28 Jul 2023 19:30:18 +0000
From:   "Jarkko Sakkinen" <jarkko@...nel.org>
To:     "Daniil Stas" <daniil.stas@...teo.net>, <mario.limonciello@....com>
Cc:     <James.Bottomley@...senpartnership.com>, <Jason@...c4.com>,
        <linux-integrity@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <regressions@...mhuis.info>, <stable@...r.kernel.org>,
        <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 1/1] tpm: disable hwrng for fTPM on some AMD designs

On Thu Jul 27, 2023 at 3:38 PM UTC, Daniil Stas wrote:
> Hi,
> I am still getting fTPM stutters with 6.4.3 kernel on Asus GA402RJ
> laptop.
> Compiling kernel without TPM support makes the stutters go away.
> The fTPM firmware version is 0x3005700020005 on my machine.

This is needs a bit more elaboration in order to be comprehended.

Do you mean by "stutter" unexpected delays and when do they happen?

BR, Jarkko