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From: Ingo Molnar <mingo@elte.hu>
To: Jan Beulich <jbeulich@novell.com>, Roland McGrath <roland@redhat.com>
Cc: tglx@linutronix.de, hpa@zytor.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: fix typo(?) in step.c
Date: Wed, 5 Mar 2008 14:41:50 +0100	[thread overview]
Message-ID: <20080305134150.GA16477@elte.hu> (raw)
In-Reply-To: <47CE69B0.76E4.0078.0@novell.com>


* Jan Beulich <jbeulich@novell.com> wrote:

> TIF_DEBUGCTLMSR has no meaning in the actual MSR...

thanks, applied. The effect of this bug is that block-stepping is not 
disabled ... [~TIF_DEBUGCTLMSR masks out bit 25, while in the MSR we 
want to mask out bit 1]

Roland - i guess this means block-stepping (a new ptrace feature in .25) 
is not particularly well-tested. Do you have any standalone testcases 
that could be run?

	Ingo

  reply	other threads:[~2008-03-05 13:42 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-05  8:36 [PATCH] x86: fix typo(?) in step.c Jan Beulich
2008-03-05 13:41 ` Ingo Molnar [this message]
2008-03-06  7:52   ` Roland McGrath
2008-03-06 11:28     ` Ingo Molnar
2008-03-06 12:03       ` Roland McGrath
2008-03-06 13:11         ` Ingo Molnar
2008-03-10 11:53           ` Jan Beulich
2008-03-11  3:44             ` Roland McGrath
2008-03-06 11:34     ` Ingo Molnar
2008-03-06 12:16       ` Roland McGrath
2008-03-06 13:13         ` Ingo Molnar

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