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powerpc: Rename STACK_FRAME_MARKER and derive it from frame offset

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This is a count of longs from the stack pointer to the regs marker.
Rename it to make it more distinct from the other byte offsets. It
can be derived from the byte offset definitions just added.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221127124942.1665522-10-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin
2022-11-27 22:49:34 +10:00
committed by Michael Ellerman
parent d2e8ff9f14
commit e856e33692
5 changed files with 6 additions and 7 deletions
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arch/powerpc/kernel/process.c
+1 -1
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@@ -2263,7 +2263,7 @@ void __no_sanitize_address show_stack(struct task_struct *tsk,
* We look for the "regs" marker in the current frame.
*/
if (validate_sp(sp, tsk, STACK_FRAME_WITH_PT_REGS)
&& stack[STACK_FRAME_MARKER] == STACK_FRAME_REGS_MARKER) {
&& stack[STACK_INT_FRAME_MARKER_LONGS] == STACK_FRAME_REGS_MARKER) {
struct pt_regs *regs = (struct pt_regs *)
(sp + STACK_INT_FRAME_REGS);