On Tue, Apr 02, 2019 at 05:48:56PM +0200, Thomas Gleixner wrote: > > With the above "(stk <= begin || stk >= end)" check, removing the loop > > becomes not all that important since exception stack dumps are quite > > rare and not performance sensitive. With all the macros this code > > becomes a little more obtuse, so I'm not sure whether removal of the > > loop is a net positive. > > What about perf? It's NMI context and probably starts from there. Peter?
I believe perf unwinds starting from the regs from the context which was interrupted by the NMI. -- Josh
