25

Libre-Chip Awarded NLnet Grant to Prototype a CPU Isn't Vulnerable to Spectre

Interesting to see, hope they make progress on preventing the spectre attacks, since these are still relevant today. See this paper that was presented at the WHY2025 hacker camp: https://openreview.net/pdf?id=4tDNvQe2G0

a day agodutchmartin

Speculative execution > Variants,: https://en.wikipedia.org/wiki/Speculative_execution

Transient execution CPU vulnerability: https://en.wikipedia.org/wiki/Transient_execution_CPU_vulner...

Does RISC-V have speculative execution?

A RISC-V CPU out of graphene would be more efficient.

a day agowesturner

openhwgroup has open Verilog implementations of RISC-V cores from 2 stages through 6 stages that will boot Linux: https://github.com/openhwgroup

There are various optional feature flags for RISC-V.

The RISC-V open ISA is probably advantageous especially for research implementations.