On Tue, Sep 20, 2016 at 11:39:35PM -0700, Andy Lutomirski wrote: > > And the ia64 entry code has some similar language: > > > > /* > > * Invoke schedule_tail(task) while preserving in0-in7, > > which may be needed > > * in case a system call gets restarted. > > */ > > GLOBAL_ENTRY(ia64_invoke_schedule_tail) > > ... > > That comment has to be wrong. What syscall could possibly be > restarted across schedule_tail()? It's a brand new thread and has > literally never done a syscall.
Hm, yeah, that comment doesn't make any sense. > There may be another reason that the registers are live there, but I > generally do my best to never look at ia64 asm code. Yeah, I'm just going to turn around, pretend I never saw it, and slowly walk away... -- Josh
