On 09/20/17 10:38, Dmitry Vyukov wrote: > > I think we need just the frame itself and RSP pointing below this > frame. If we don't have a frame, CALL instruction will smash whatever > RSP happens to point to. Compiler doesn't have to setup RSP to point > below used part of stack in leaf functions. >
In the kernel it does. Redzoning is not allowed in the kernel, because
interrupts or exceptions would also smash the redzone.
-hpa
