commit 5ca6c0ca5dbf105d7b0ffdae2289519982189730
author H. Peter Anvin <hpa@zytor.com> Mon Oct 12 14:12:18 2009 -0700
committer H. Peter Anvin <hpa@zytor.com> Mon Oct 12 14:19:35 2009 -0700
tree c9226c93c710f56b416545bad112b77047c4de32
parent a343c75d338aa2afaea4a2a8e40de9e67b6fb4a7

x86: use kernel_stack_pointer() in kgdb.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>
Cc: Jason Wessel <jason.wessel@windriver.com>