powerpc/64s: Optimise clearing of MSR_EE in masked_[H]interrupt()
MSR_EE is always enabled in SRR1 for masked interrupts, so we can use xor to clear it. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -1373,8 +1373,7 @@ masked_##_H##interrupt: \
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1: andi. r10,r10,(PACA_IRQ_DBELL|PACA_IRQ_HMI); \
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bne 2f; \
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mfspr r10,SPRN_##_H##SRR1; \
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rldicl r10,r10,48,1; /* clear MSR_EE */ \
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rotldi r10,r10,16; \
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xori r10,r10,MSR_EE; /* clear MSR_EE */ \
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mtspr SPRN_##_H##SRR1,r10; \
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2: mtcrf 0x80,r9; \
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ld r9,PACA_EXGEN+EX_R9(r13); \
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