APICBASE_ENABLED
vlapic->msr_apicbase = DEFAULT_APIC_BASE | APICBASE_ENABLED;
if ((vlapic->msr_apicbase & APICBASE_ENABLED) != 0 &&
apicbase &= ~APICBASE_ENABLED;
apicbase |= APICBASE_ENABLED;
apic_base |= APICBASE_X2APIC | APICBASE_ENABLED;
return ((apic_base & (APICBASE_X2APIC | APICBASE_ENABLED)) ==
(APICBASE_X2APIC | APICBASE_ENABLED));