linux-kernel - [PATCH 0/2] (Was: ptrace: PTRACE_DETACH should do flush_ptrace_hw

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Message-ID: <20130430185322.GA12389@redhat.com>
Date:	Tue, 30 Apr 2013 20:53:22 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Ingo Molnar <mingo@...e.hu>,
	Jan Kratochvil <jan.kratochvil@...hat.com>,
	Prasad <prasad@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] (Was: ptrace: PTRACE_DETACH should do
	flush_ptrace_hw_breakpoint(child))

On 04/30, Oleg Nesterov wrote:
>
> On 04/30, Frederic Weisbecker wrote:
> >
> > > Btw. perhaps flush_ptrace_hw_breakpoint() should also clear the
> > > virtual registers like thread.debugreg7 ? Even without this patch,
> > > flush_ is also called exec.
> >
> > Yeah makes sense.
>
> OK, and probably debugreg6 too, but I need to recheck.

Yes, looks like it should be cleared and we did this before.

And I think this change makes sense in this series, so could you
review this patch too?

Oleg.

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