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Commit 902050bc authored by Heiko Carstens's avatar Heiko Carstens
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[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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 4db70f73

arch/s390/mm/fault.c

+1 −2
Original line number Diff line number Diff line
@@ -485,7 +485,6 @@ int pfault_init(void) 
		"2:\n"

		EX_TABLE(0b,1b)

		: "=d" (rc) : "a" (&refbk), "m" (refbk) : "cc");

        __ctl_set_bit(0, 9);

        return rc;

}
@@ -500,7 +499,6 @@ void pfault_fini(void) 


	if (!MACHINE_IS_VM || pfault_disable)

		return;

	__ctl_clear_bit(0,9);

	asm volatile(

		"	diag	%0,0,0x258\n"

		"0:\n"
@@ -615,6 +613,7 @@ static int __init pfault_irq_init(void) 
	rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;

	if (rc)

		goto out_pfault;

	ctl_set_bit(0, 9);

	hotcpu_notifier(pfault_cpu_notify, 0);

	return 0;