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powerpc/power8: Update denormalization handler

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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 <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling 2013-05-29 21:33:19 +00:00 committed by Benjamin Herrenschmidt
parent d7c67fb1cf
commit fb0fce3e55
1 changed files with 10 additions and 0 deletions
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10
arch/powerpc/kernel/exceptions-64s.S
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@ -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)