s390/smp: reenable smt after resume
After a suspend/resume cycle we missed to enable smt again, which leads to all sorts of bugs, since the kernel assumes smt is enabled, while the hardware thinks it is not. Reported-and-tested-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Reported-by: NStefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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