From: Fenghua Yu <fenghua...@intel.com> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
