From fb0fce3e554e5513aaa1c1c52b2ece11feea3c7d Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 29 May 2013 21:33:19 +0000 Subject: [PATCH] powerpc/power8: Update denormalization handler POWER8 can take a denormalisation exception on any VSX registers. This does the extra 32 VSX registers we don't currently handle. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/exceptions-64s.S | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 3c9296bcf960..e783453f910d 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -480,6 +480,16 @@ FTR_SECTION_ELSE XVCPSGNDP32(0) ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206) + +BEGIN_FTR_SECTION + b denorm_done +END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) +/* + * To denormalise we need to move a copy of the register to itself. + * For POWER8 we need to do that for all 64 VSX registers + */ + XVCPSGNDP32(32) +denorm_done: mtspr SPRN_HSRR0,r11 mtcrf 0x80,r9 ld r9,PACA_EXGEN+EX_R9(r13) -- 2.20.1