[S390] pfault: always enable service signal interrupt
Always enable the service signal subclass mask bit in cr0, if pfault is available. That way we use the normal cpu hotplug way to propagate the subclass mask bit in cr0 instead of open coding it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -485,7 +485,6 @@ int pfault_init(void)
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"2:\n"
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EX_TABLE(0b,1b)
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: "=d" (rc) : "a" (&refbk), "m" (refbk) : "cc");
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__ctl_set_bit(0, 9);
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return rc;
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}
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@ -500,7 +499,6 @@ void pfault_fini(void)
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if (!MACHINE_IS_VM || pfault_disable)
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return;
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__ctl_clear_bit(0,9);
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asm volatile(
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" diag %0,0,0x258\n"
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"0:\n"
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@ -615,6 +613,7 @@ static int __init pfault_irq_init(void)
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rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;
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if (rc)
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goto out_pfault;
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ctl_set_bit(0, 9);
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hotcpu_notifier(pfault_cpu_notify, 0);
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return 0;
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