Commit def3c5d0 authored Oct 12, 2009 by H. Peter Anvin

x86: use kernel_stack_pointer() in process_32.c



The way to obtain a kernel-mode stack pointer from a struct pt_regs in
32-bit mode is "subtle": the stack doesn't actually contain the stack
pointer, but rather the location where it would have been marks the
actual previous stack frame.  For clarity, use kernel_stack_pointer()
instead of coding this weirdness explicitly.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent d93a8f82

arch/x86/kernel/process_32.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -134,7 +134,7 @@ void __show_regs(struct pt_regs *regs, int all)
		ss = regs->ss & 0xffff;
		gs = get_user_gs(regs);
		} else {
		sp = (unsigned long) (&regs->sp);
		sp = kernel_stack_pointer(regs);
		savesegment(ss, ss);
		savesegment(gs, gs);
		}