On Fri, 11 Jul 2025 09:43:21 +0100 David Laight <david.laight.linux@xxxxxxxxx> wrote: > On Mon, 07 Jul 2025 21:22:52 -0400 > Steven Rostedt <rostedt@xxxxxxxxxx> wrote: > > > From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> > > > > Use ARCH_INIT_USER_FP_FRAME to describe how frame pointers are unwound > > on x86, and enable CONFIG_HAVE_UNWIND_USER_FP accordingly so the > > unwind_user interfaces can be used. > > How is that going to work? > Pretty much all x86 userspace is compiled with bp as a general > purpose register not a frame pointer. Which is where this patch set comes in... https://lore.kernel.org/linux-trace-kernel/20250701184939.026626626@xxxxxxxxxxx -- Steve
