x86/microcode: Convert to hotplug state machine

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Install the callbacks via the state machine. 
CPU_UP_CANCELED_FROZEN() is not preserved: It is only there to free memory in an
error case because it is assumed if the CPU does show up on resume it won't be
seen ever again. As per Borislav:
|IOW, you don't need mc_cpu_dead().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160907164523.46a2xnffha4bv63g@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Sebastian Andrzej Siewior 2016-09-07 18:45:23 +02:00 • committed by Thomas Gleixner

parent 515332336b

commit 29bd7fbc07

1 changed files with 17 additions and 35 deletions

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arch/x86/kernel/cpu/microcode/core.c

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