powerpc: add definition for pt_regs offset within an interrupt frame
This is a common offset that currently uses the overloaded
STACK_FRAME_OVERHEAD constant. It's easier to read and more
flexible to use a specific regs offset for this.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221127124942.1665522-8-npiggin@gmail.com
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index 1cb9d0f..3149ac2 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -99,7 +99,7 @@ END_BTB_FLUSH_SECTION
mfspr r10,SPRN_XER
addi r2, r2, -THREAD
stw r10,_XER(r1)
- addi r3,r1,STACK_FRAME_OVERHEAD
+ addi r3,r1,STACK_INT_FRAME_REGS
.endm
.macro prepare_transfer_to_handler
