aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
authorMichael Neuling <mikey@neuling.org>2013-05-29 21:33:19 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-06-10 08:36:26 +1000
commitfb0fce3e554e5513aaa1c1c52b2ece11feea3c7d (patch)
treee4cfbf84c5519efd83dbf9cfce5c0e88c5a3a191 /arch/powerpc
parentd7c67fb1cf00b84829ae06fca04ad39408f156ba (diff)
downloadvexpress-lsk-fb0fce3e554e5513aaa1c1c52b2ece11feea3c7d.tar.gz
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 <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 3c9296bcf96..e783453f910 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)