Aug 1, 2023 · Information Security

Why Linus Torvalds Wants to Disable AMD’s fTPM RNG – A Hidden Kernel Issue

Linus Torvalds has publicly criticized AMD’s firmware‑based TPM random number generator for causing system stalls on Linux, urging the community to disable the fTPM hwrng until reliable fixes are delivered, highlighting broader security and firmware concerns.

AMDKernelRandom Number Generator

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Why Linus Torvalds Wants to Disable AMD’s fTPM RNG – A Hidden Kernel Issue

Liangxu Linux

Apr 10, 2022 · Fundamentals

How Linux’s New getrandom() Overhaul Boosts Performance by Up to 8450%

Under Jason Donenfeld’s leadership, Linux kernel random number generation was dramatically revamped in versions 5.17 and 5.18, replacing SHA1 with BLAKE2s and shifting from per‑NUMA to per‑CPU structures, delivering up to 131% speed gains in 5.17 and a staggering 8450% boost for getrandom() on multi‑core systems.

BLAKE2sRandom Number Generatorgetrandom

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How Linux’s New getrandom() Overhaul Boosts Performance by Up to 8450%