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rbanffy
on June 19, 2021
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Spectre mitigations murder userspace performance
Yes. You’d need to split caches by security context too.
lanstin
on June 20, 2021
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Maybe each security context needs to be in its own cloud account and own network. Long ago it was an axiom that if you share a call stack in a process you trust each other. Perhaps the current truth is if you share hardware you trust each other.
rbanffy
on June 20, 2021
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That should work with multiple services, but not in a user/kernel split as we have today.
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