Commit 5bd41878 authored May 23, 2011 by Heiko Carstens Committed by Martin Schwidefsky May 23, 2011

[S390] cpu hotplug: fix external interrupt subclass mask handling



When disabling a cpu all external interrupt subclass masks in control
register 0 get cleared. However instead of the service signal subclass
mask bit an unused bit got cleared.
Accidently (or luckily) the service subclass mask gets cleared with the
pfault_fini() call that happens just before the rest of the subclass
mask bits get cleared.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

parent 5f420c5b

arch/s390/kernel/smp.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -654,8 +654,8 @@ int __cpu_disable(void)

		/* disable all external interrupts */
		cr_parms.orvals[0] = 0;
		cr_parms.andvals[0] = ~(1 << 15 \| 1 << 14 \| 1 << 13 \| 1 << 12 \|
		1 << 11 \| 1 << 10 \| 1 << 6 \| 1 << 4);
		cr_parms.andvals[0] = ~(1 << 15 \| 1 << 14 \| 1 << 13 \| 1 << 11 \|
		1 << 10 \| 1 << 9 \| 1 << 6 \| 1 << 4);
		/* disable all I/O interrupts */
		cr_parms.orvals[6] = 0;
		cr_parms.andvals[6] = ~(1 << 31 \| 1 << 30 \| 1 << 29 \| 1 << 28 \|