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Commit fb0fce3e authored by Michael Neuling's avatar Michael Neuling Committed by Benjamin Herrenschmidt
Browse files

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: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent d7c67fb1

arch/powerpc/kernel/exceptions-64s.S

+10 −0
Original line number Diff line number Diff line
@@ -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)