RE: [PATCH 1/5] x86/ibrs: Introduce native_rdmsrl, and native_wrmsrl
From: Van De Ven, Arjan
Date: Sat Jan 13 2018 - 08:52:36 EST
> > We were also worried about the indirect calls that are part of the
> > paravirt interfaces when retpolines are not in place.
> >
>
> How could those possibly be any worse than any other indirect call in
> the kernel?
they're worse if they happen before you write the MSR that then protects them?