Re: [PATCH 1/3] perf/x86/intel: output LBR support statement after validation

[Andi Kleen]

> Ok, so you're saying that syscall and int are not causing LBR callstack to
> record an entry. If that is the case, then a rfi should not cause a pop of the
> last LBR entry. Is that right?

rfi = ?

But likely yes. There shouldn't be any ring 0 branches in the callstack LBR,
as long as the patch forcing it to ring 3 is still there.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only