RE: [PATCH 6/6] x86-mce: ensure the MCP timer is not already set in the mce_timer_fn.

[Luck, Tony]

+       /* Ensure a CMCI interrupt can't preempt this. */
+       local_irq_save(flags);
        if (mce_available(__this_cpu_ptr(&cpu_info))) {
                machine_check_poll(MCP_TIMESTAMP,
                                &__get_cpu_var(mce_poll_banks));

Does this remove the problem that you fixed in part4?  If a CMCI can
no longer interrupt a poll ... do we really need the locks you added?

-Tony
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