Re: [PATCH v9 08/12] x86, hotplug: Wake up CPU0 via NMI instead ofINIT, SIPI, SIPI

[HATAYAMA Daisuke]

From: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Subject: [PATCH v9 08/12] x86, hotplug: Wake up CPU0 via NMI instead of INIT, SIPI, SIPI
Date: Fri, 12 Oct 2012 09:09:45 -0700

<cut>

> @@ -1037,6 +1101,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
>  	 */
>  	setup_local_APIC();
>  
> +	cpu0_logical_apicid = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR));
> +

In x2apic mode, logical apicid occupies a whole 32-bit length of LDR,
but GET_APIC_LOGICAL_ID returns high 31-24 bits only, and this is only
for xapic mode.

Thanks.
HATAYAMA, Daisuke

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