[RFC PATCH glibc] Linux: Use fixed rseq_len value for rseq registration
Florian Weimer
fweimer@redhat.com
Tue Jul 14 13:54:58 GMT 2020
* Christian Brauner:
>> It works reliably as long as glibc only ever uses the minimum rseq size.
>> And since glibc monopolizes the rseq registration, applications cannot
>> register a larger area. So there is no way to make use of any future
>> kernel extensions.
>
> But when you bump ABI in glibc you can switch to a new rseq size, no?
We are expected to support interposers with their own definition
__rseq_abi, which could be smaller.
Thanks,
Florian
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