3  * CPU/APIC topology
5  * The APIC IDs describe the system topology in multiple domain levels.
7  * APIC ID is associated to the individual levels:
29 #include <asm/apic.h>
39  * Map cpu index to physical APIC ID
89  * Convert the APIC ID to a domain level ID by masking out the low bits
138 	 * longer supported, the real BSP APIC ID is the first one which is  in check_for_real_bsp()
140 	 * CPU is the real BSP. If it is not, then do not register the APIC  in check_for_real_bsp()
144 	 * The first APIC ID which is enumerated by firmware is detectable  in check_for_real_bsp()
145 	 * because the boot CPU APIC ID is registered before that without  in check_for_real_bsp()
164 		 * If the boot CPU has the APIC BSP bit set then the  in check_for_real_bsp()
174 		 * If the boot APIC is enumerated first, but the APICBASE  in check_for_real_bsp()
180 		pr_warn("Enumerated BSP APIC %x is not marked in APICBASE MSR\n", apic_id);  in check_for_real_bsp()
186 	pr_warn("Boot CPU APIC ID not the first enumerated APIC ID: %x != %x\n",  in check_for_real_bsp()
191 		 * The boot CPU has the APIC BSP bit set. Use it and complain  in check_for_real_bsp()
204 	pr_warn(FW_BUG "APIC enumeration order not specification compliant\n");  in check_for_real_bsp()
231 		 * APIC because that is registered before the enumeration  in topo_register_apic()
251 			pr_info_once("Ignoring hot-pluggable APIC ID %x in present package.\n",  in topo_register_apic()
270  * topology_register_apic - Register an APIC in early topology maps
271  * @apic_id:	The APIC ID to set up
272  * @acpi_id:	The ACPI ID associated to the APIC
278 		pr_err_once("APIC ID %x exceeds kernel limit of: %x\n", apic_id, MAX_LOCAL_APIC - 1);  in topology_register_apic()
299  * topology_register_boot_apic - Register the boot CPU APIC
300  * @apic_id:	The APIC ID to set up
314  * @apicid:		The APIC ID for which to lookup the logical ID
317  * @apicid must be a full APIC ID, not the normalized variant. It's valid to have
319  * real APIC IDs and backshifted normalized APIC IDs work correctly.
342  * @apicid:		The APIC ID which specifies the search range
381 	 * Get the core domain level APIC id, which is the primary thread  in topology_get_primary_thread()
390  * topology_hotplug_apic - Handle a physical hotplugged APIC after boot
391  * @apic_id:	The APIC ID to set up
392  * @acpi_id:	The ACPI ID associated to the APIC
401 	/* Reject if the APIC ID was not registered during enumeration. */  in topology_hotplug_apic()
416  * topology_hotunplug_apic - Remove a physical hotplugged APIC after boot
417  * @cpu:	The CPU number for which the APIC ID is removed
463 	 * XEN PV is special as it does not advertise the local APIC  in restrict_to_up()
465 	 * infrastructure works. So don't apply the restrictions vs. APIC  in restrict_to_up()
483 	 * If there was no APIC registered, then fake one so that the  in topology_init_possible_cpus()
486 	 * unconditionally. This does not affect the actual APIC code in  in topology_init_possible_cpus()
487 	 * any way because either the local APIC address has not been  in topology_init_possible_cpus()
488 	 * registered or the local APIC was disabled on the command line.  in topology_init_possible_cpus()
567  * Late SMP disable after sizing CPU masks when APIC/IOAPIC setup failed.