s390: fix machine check handling
Commit eb7e7d76 "s390: Replace __get_cpu_var uses" broke machine check handling. We copy machine check information from per-cpu to a stack variable for local processing. Next we should zap the per-cpu variable, not the stack variable. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Acked-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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