linux-kernel - Re: [PATCH] x86: fix typo(?) in step.c

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Message-ID: <20080305134150.GA16477@elte.hu>
Date:	Wed, 5 Mar 2008 14:41:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jan Beulich <jbeulich@...ell.com>,
	Roland McGrath <roland@...hat.com>
Cc:	tglx@...utronix.de, hpa@...or.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: fix typo(?) in step.c

* Jan Beulich <jbeulich@...ell.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
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