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SubjectRe: s390 && user_enable_single_step() (Was: odd utrace testing results on s390x)
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> However, with or without CONFIG_UTRACE, 6580807da14c423f0d0a708108e6df6ebc8bc83d
> is needed on s390 too, otherwise the child gets unnecessary traps.

This confuses me. user_disable_single_step on non-current doesn't do
anything not already done by the memset in copy_thread. Ooh, except
perhaps it does not clear PSW_MASK_PER. Maybe that matters. That's
the only thing I can think of. Maybe Martin can make sense of it.


Thanks,
Roland


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