On Thu, 15 Apr 2021 14:18:31 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > My last release of that code is here: > > https://lore.kernel.org/lkml/20190525031633.811342628@xxxxxxxxxxx/ > > It allows you to "reserve data" to pass from the caller to the return, and > that could hold the arguments. See patch 15 of that series. Note that implementation only lets you save up to 4 words on the stack, but that can be changed. Or you could have a separate shadow stack for saving arguments, and only pass the pointer to the location on the other stack where those arguments are. -- Steve
