On Wed, Nov 07, 2018 at 06:41:47PM +0000, Joakim Tjernlund wrote: > > Certainly not. I'm not sure which architectures do have Spectre V2 > > mitigations which make indirect branches expensive now... perhaps there is > > no intersection with the cases where we really care about JFFS2 being > > CPU-bound? > > All that passing of a new extra arg and extra if .. elif .. does cost too.
I know of no current microarchitecture where an indirect call is cheaper than a simple branch, which can be very well predicted.
