linux-kernel - Re: Q: user_enable_single_step() && update

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Message-ID: <20120801144743.GA8497@redhat.com>
Date:	Wed, 1 Aug 2012 16:47:43 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	Roland McGrath <roland@...k.frob.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	ananth@...ibm.com, a.p.zijlstra@...llo.nl, mingo@...hat.com,
	srikar@...ux.vnet.ibm.com
Subject: Re: Q: user_enable_single_step() && update_debugctlmsr()

On 08/01, Oleg Nesterov wrote:
>
> GDB does ptrace(PTRACE_SINGLEBLOCK, T). This sets X->TIF_BLOCKSTEP.
                                                   ^^^
this sets T->TIF_BLOCKSTEP, I meant

Oleg.

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