search for: speculation_safe_valu

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2018 Jul 11
3
RFC: Speculative Load Hardening (a Spectre variant #1 mitigation)
..., we can rework things to move in this direction. > I've split the patches according to the following functionality: > - LLVM: https://reviews.llvm.org/D49069: Introduce control flow > speculation tracking for AArch64. > - LLVM: https://reviews.llvm.org/D49070: Introduce > llvm.speculation_safe_value intrinsic. > - LLVM: https://reviews.llvm.org/D49071: Enable lowering of > llvm.speculation_safe_value to DSB/ISB pair. > - LLVM: https://reviews.llvm.org/D49072: Enable automatic mitigation > against control flow speculation. > - Clang: https://reviews.llvm.org/D49073: Introducing...
2018 Mar 23
5
RFC: Speculative Load Hardening (a Spectre variant #1 mitigation)
Hello all, I've been working for the last month or so on a comprehensive mitigation approach to variant #1 of Spectre. There are a bunch of reasons why this is desirable: - Critical software that is unlikely to be easily hand-mitigated (or where the performance tradeoff isn't worth it) will have a compelling option. - It gives us a baseline on performance for hand-mitigation. - Combined