From 6cde2b6f399e7d68a4b482680850a077104f9068 Mon Sep 17 00:00:00 2001 From: LEROY Christophe Date: Fri, 19 Sep 2014 10:36:08 +0200 Subject: [PATCH] powerpc/8xx: No need to restore registers and save them again. In DTLBError handler there is not need to restore r10, r11 and cr registers after fixing DAR as they are saved again to the same place just after. Signed-off-by: Christophe Leroy Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_8xx.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 464be24fd3eb..c061bc8d9045 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -481,8 +481,8 @@ DataTLBError: cmpwi cr0, r11, 0x00f0 beq- FixupDAR /* must be a buggy dcbX, icbi insn. */ DARFixed:/* Return from dcbx instruction bug workaround */ - EXCEPTION_EPILOG_0 - EXCEPTION_PROLOG + EXCEPTION_PROLOG_1 + EXCEPTION_PROLOG_2 mfspr r10,SPRN_DSISR stw r10,_DSISR(r11) mr r5,r10 -- 2.20.1