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Message-Id: <20100107214821.94FF97300@magilla.sf.frob.com>
Date: Thu, 7 Jan 2010 13:48:21 -0800 (PST)
From: Roland McGrath <roland@...hat.com>
To: Oleg Nesterov <oleg@...hat.com>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>, caiqian@...hat.com,
Heiko Carstens <heiko.carstens@...ibm.com>,
Jan Kratochvil <jkratoch@...hat.com>,
linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
utrace-devel@...hat.com
Subject: Re: s390 && user_enable_single_step() (Was: odd utrace testing
results on s390x)
> I am confused as well. Yes, I thought about regs->psw.mask change too,
> but I don't understand why it helps..
[...]
> But. Acoording to the testing I did (unless I did something wrong
> again) this patch doesn't make any difference in this particular
> case. 6580807da14c423f0d0a708108e6df6ebc8bc83d does.
Those results are quite mysterious to me.
I think we'll have to get Martin to sort it out definitively.
Thanks,
Roland
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