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Date: Mon, 03 Mar 2014 14:13:54 -0800
From: "H. Peter Anvin" <hpa@...or.com>
To: Petr Mladek <pmladek@...e.cz>, Steven Rostedt <rostedt@...dmis.org>
CC: Frederic Weisbecker <fweisbec@...il.com>,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Jiri Kosina <jkosina@...e.cz>, linux-kernel@...r.kernel.org,
x86@...nel.org
Subject: Re: [PATCH 1/3] ftrace/x86: One more missing sync after fixup of
function modification failure
On 02/24/2014 08:12 AM, Petr Mladek wrote:
> If a failure occurs while modifying ftrace function, it bails out and will
> remove the tracepoints to be back to what the code originally was.
>
> There is missing the final sync run across the CPUs after the fix up is done
> and before the ftrace int3 handler flag is reset.
>
> Signed-off-by: Petr Mladek <pmladek@...e.cz>
> ---
> arch/x86/kernel/ftrace.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Acked-by: H. Peter Anvin <hpa@...ux.intel.com>
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