Software Mitigation of RISC-V Spectre Attacks · HackerPapers discussions

Software Mitigation of RISC-V Spectre Attacks — mentioned by acdha

Wed, 09 Aug 2023 15:21:01 GMT

I see you’re basically trying to “No True Scotsman” a definition where anything which isn’t RISC-V is too complicated. That’s a shame as the time you’re spending on counterproductive RISC-V advocacy could have been spent learning about this class of attack and how it has nothing to do with the ISA. When a CPU implements speculative execution, this class of attack becomes a concern. If it doesn’t, it’ll be too slow for most applications. Fortunately, the people who are - unlike you - actually helping RISC-V are working on efficient countermeasures: https://arxiv.org/abs/2206.04507

Paper and discussion history. A mention is not an endorsement.

Software Mitigation of RISC-V Spectre Attacks — mentioned by belter

Sun, 03 Jul 2022 22:30:54 GMT

[PDF]: https://arxiv.org/pdf/2206.04507.pdf "...In this paper we focus on the RISC-V cores where speculation is enabled and, as we show, where Spectre attacks are as effective as on x86. Even though RISC-V hardware mitigations were proposed in the past, they have not yet passed the prototype phase. Instead, we propose low-overhead software mitigations for Spectre-BTI, inspired from those used on the x86 architecture, and for Spectre-RSB, to our knowledge the first such mitigation to be proposed. We show that these mitigations work in practice and that they can be integrated in the LLVM…

Paper and discussion history. A mention is not an endorsement.

Software Mitigation of RISC-V Spectre Attacks — HN submission

Sun, 03 Jul 2022 22:30:54 GMT

Software Mitigation of RISC-V Spectre Attacks

1 point; 2 discussion replies on HN. Paper and source history. A submission is not an endorsement.