x86: check_timer cleanup
Impact: make check-timer more robust potentially solve boot fragility For edge trigger io-apic routing, we already unmasked the pin via setup_IO_APIC_irq(), so don't unmask it again. Also call local_irq_disable() between timer_irq_works(), because it calls local_irq_enable() inside. Also remove not needed apic version reading for 64-bit Signed-off-by: NYinghai Lu <yinghai@kernel.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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