On Sun, Oct 05, 2025 at 11:09:08AM -0700, Linus Torvalds wrote: > On Sun, 5 Oct 2025 at 08:47, Jarkko Sakkinen <[email protected]> wrote: > > > > This pull request disables > > TCG_TPM2_HMAC from the default configuration as it does not perform well > > enough [1]. > > > > [1] > > https://lore.kernel.org/linux-integrity/[email protected]/ > > This link is entirely useless, and doesn't explain what the problem > was and *why* TPM2_TCG_HMAC shouldn't be on by default. > > I think a much better link is > > > https://lore.kernel.org/linux-integrity/[email protected]/ > > which talks about the problems that TPM2_TCG_HMAC causes. > > Which weren't just about "not performing well enough", but actually > about how it breaks TPM entirely for some cases.
Fair enough. I'll also enumerate the issues, and also roadmap to heal the feature. > > Linus BR, Jarkko
