x86: use kernel_stack_pointer() in kprobes.c

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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: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Masami Hiramatsu <mhiramat@redhat.com>

...

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H. Peter Anvin 2009-10-12 14:14:10 -07:00

parent 5ca6c0ca5d

commit 98272ed0d2

1 changed files with 1 additions and 13 deletions

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arch/x86/kernel/kprobes.c

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