Re: s390 && user_enable_single_step() (Was: odd utrace testingresults on s390x)

[Roland McGrath]

> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/