s390/uprobes: fix user space PER events
If uprobes are single stepped for example with gdb, the behavior should now be correct. Before this patch, when gdb was single stepping a uprobe, the result was a SIGILL. When PER is active for any storage alteration and a uprobe is hit, a storage alteration event is indicated. These over indications are filterd out by gdb, if no change has happened within the observed area. Signed-off-by: NJan Willeke <willeke@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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