Move in_mce decrement earlier before registers are restored (but
still after RI=0). This helps with later consolidation.
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
arch/powerpc/kernel/exceptions-64s.S | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S
b/arch/powerpc/kernel/exceptions-64s.S
index b1dfd0af0120..c1d9ec5fe849 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1080,6 +1080,10 @@ EXC_COMMON_BEGIN(machine_check_common)
/* Clear MSR_RI before setting SRR0 and SRR1. */\
li r9,0; \
mtmsrd r9,1; /* Clear MSR_RI */ \
+ /* Decrement paca->in_mce now RI is clear. */ \
+ lhz r12,PACA_IN_MCE(r13); \
+ subi r12,r12,1; \
+ sth r12,PACA_IN_MCE(r13); \
/* Move original SRR0 and SRR1 into the respective regs */ \
ld r9,_MSR(r1); \
mtspr SPRN_SRR1,r9; \
@@ -1096,10 +1100,6 @@ EXC_COMMON_BEGIN(machine_check_common)
REST_GPR(10, r1); \
ld r11,_CCR(r1); \
mtcr r11; \
- /* Decrement paca->in_mce. */ \
- lhz r12,PACA_IN_MCE(r13); \
- subi r12,r12,1; \
- sth r12,PACA_IN_MCE(r13); \
REST_GPR(11, r1); \
REST_2GPRS(12, r1); \
/* restore original r1. */ \
--
2.20.1
