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kdb: only use atomic consoles for output mirroring
Currently kdb uses the @oops_in_progress hack to mirror kdb output to all active consoles from NMI context. Ignoring locks is unsafe. Now that an NMI-safe atomic interfaces is available for consoles, use that interface to mirror kdb output. Signed-off-by: John Ogness <john.ogness@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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