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Commit a1d711c5 authored by Michael Ellerman's avatar Michael Ellerman Committed by Benjamin Herrenschmidt
Browse files

powerpc: Document register clobbering in EXCEPTION_COMMON() 



Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 144beb2f

arch/powerpc/include/asm/exception-64s.h

+1 −0
Original line number Diff line number Diff line
@@ -532,6 +532,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CTRL) 
	.globl label##_common;					\

label##_common:							\

	EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN);		\

	/* Volatile regs are potentially clobbered here */	\

	additions;						\

	addi	r3,r1,STACK_FRAME_OVERHEAD;			\

	bl	hdlr;						\