Re: [patch 00/38] x86/retbleed: Call depth tracking mitigation

Joao Moreira
2022-07-19T00:19:26Z

> The extra instruction is likely less of a problem than the extra
> register used.
>
FWIIW, per-ABI, R11 is a scratch-reg and should be usable without hard
consequences in this scenario.

Joao