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From: Roland McGrath <roland@redhat.com>
To: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>, caiqian@redhat.com,
       Heiko Carstens <heiko.carstens@de.ibm.com>,
       Jan Kratochvil <jkratoch@redhat.com>, linux-kernel@vger.kernel.org,
       linux-s390@vger.kernel.org, utrace-devel@redhat.com
Subject: Re: s390 && user_enable_single_step() (Was: odd utrace testing
 results on s390x)
In-Reply-To: Martin Schwidefsky's message of  Friday, 8 January 2010 09:30:25 +0100 <20100108093025.28ec0907@mschwide.boeblingen.de.ibm.com>
References: <20100104155225.GA16650@redhat.com>
	<20100104171626.22ea2d9c@mschwide.boeblingen.de.ibm.com>
	<20100104181412.GA21146@redhat.com>
	<20100104211147.4CC94D532@magilla.sf.frob.com>
	<20100105105030.66bb8a0a@mschwide.boeblingen.de.ibm.com>
	<20100105153633.GA9376@redhat.com>
	<20100105164610.388effd3@mschwide.boeblingen.de.ibm.com>
	<20100105155913.GA10652@redhat.com>
	<20100105170301.GA13641@redhat.com>
	<20100105195818.GA20358@redhat.com>
	<20100106201722.GB26204@redhat.com>
	<20100106211329.DB4F5134D@magilla.sf.frob.com>
	<20100107101855.13248dc2@mschwide.boeblingen.de.ibm.com>
	<20100107214642.579F27300@magilla.sf.frob.com>
	<20100108093025.28ec0907@mschwide.boeblingen.de.ibm.com>
Message-Id: <20100108102539.2E747105F6@magilla.sf.frob.com>
Date: Fri,  8 Jan 2010 02:25:39 -0800 (PST)
Sender: linux-kernel-owner@vger.kernel.org
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> Ok, I changed the wording slightly:
> 
> Clear the TIF_SINGLE_STEP bit in copy_thread. The new process did not get
> a PER event of its own. It is wrong deliver a SIGTRAP that was meant for
> the parent process.

Very good!

Thanks,
Roland
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