[libre-riscv-dev] [Bug 209] spectre-proof speculative execution

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon May 18 20:24:53 BST 2020


--- Comment #4 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Yehowshua from comment #3)

> Its all about making sure that cache is reverted during L1 so that you can
> cache flushes cannot leak sensitive information.

so basically this extends the Dependency Matrix "Shadow" concept actually
right down into the Caches.

(if a Shadow exists it is because there is some "damage" that could occur due
to cancellation).

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