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Re: Spectre V1 diagnostic / mitigation
* Richard Biener:
> Sure, if we'd ever deploy this in production placing this in the
> TCB for glibc targets might be beneifical. But as said the
> current implementation was just an experiment intended to be
> maximum portable. I suppose the dynamic loader takes care
> of initializing the TCB data?
Yes, the dynamic linker will initialize it. If you need 100% reliable
initialization with something that is not zero, it's going to be tricky
though. Initial-exec TLS memory has this covered, but in the TCB, we
only have zeroed-out reservations today.