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rasz
on Jan 4, 2018
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Reading privileged memory with a side-channel
Keep a small pool of cache lines exclusive to speculative execution, discard when non taken, rename affected cache lines (like register renaming so no copy) when taken.
ant6n
on Jan 4, 2018
[–]
Also, separate BTB for each process and privilege level.
rasz
on Jan 4, 2018
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parent
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Yes, this would have a bonus effect of actually gaining IPC in multi process loads.
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