On Sun, Aug 14, 2016 at 01:23:11AM -0700, Andy Lutomirski wrote: > On Fri, Aug 12, 2016 at 7:29 AM, Josh Poimboeuf <jpoim...@redhat.com> wrote: > > The entry code doesn't encode pt_regs for syscalls. But they're always > > at the same location, so we can add a manual check for them. > > At first I thought these would be useless (they're the *user* state > and aren't directly relevant to the kernel), but then I realized that > they could be extremely valuable: they contain the syscall args.
Yeah, that's what I was thinking. I'll add that justification to the patch header. > Do they display in OOPS dumps? Yes. > It might be nice to add orig_ax to the regs display too so we get the > syscall nr as well. Hm, good idea. I'm surprised orig_ax isn't already being shown since it could be useful for exceptions and irqs too. -- Josh
