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>
38  * Map cpu index to physical APIC ID
88  * Convert the APIC ID to a domain level ID by masking out the low bits
137 	 * longer supported, the real BSP APIC ID is the first one which is  in check_for_real_bsp()
139 	 * CPU is the real BSP. If it is not, then do not register the APIC  in check_for_real_bsp()
143 	 * The first APIC ID which is enumerated by firmware is detectable  in check_for_real_bsp()
144 	 * because the boot CPU APIC ID is registered before that without  in check_for_real_bsp()
163 		 * If the boot CPU has the APIC BSP bit set then the  in check_for_real_bsp()
173 		 * If the boot APIC is enumerated first, but the APICBASE  in check_for_real_bsp()
179 		pr_warn("Enumerated BSP APIC %x is not marked in APICBASE MSR\n", apic_id);  in check_for_real_bsp()
185 	pr_warn("Boot CPU APIC ID not the first enumerated APIC ID: %x != %x\n",  in check_for_real_bsp()
190 		 * The boot CPU has the APIC BSP bit set. Use it and complain  in check_for_real_bsp()
203 	pr_warn(FW_BUG "APIC enumeration order not specification compliant\n");  in check_for_real_bsp()
230 		 * APIC because that is registered before the enumeration  in topo_register_apic()
250 			pr_info_once("Ignoring hot-pluggable APIC ID %x in present package.\n",  in topo_register_apic()
269  * topology_register_apic - Register an APIC in early topology maps
270  * @apic_id:	The APIC ID to set up
271  * @acpi_id:	The ACPI ID associated to the APIC
277 		pr_err_once("APIC ID %x exceeds kernel limit of: %x\n", apic_id, MAX_LOCAL_APIC - 1);  in topology_register_apic()
298  * topology_register_boot_apic - Register the boot CPU APIC
299  * @apic_id:	The APIC ID to set up
313  * @apicid:		The APIC ID for which to lookup the logical ID
316  * @apicid must be a full APIC ID, not the normalized variant. It's valid to have
318  * real APIC IDs and backshifted normalized APIC IDs work correctly.
341  * @apicid:		The APIC ID which specifies the search range
376  * topology_hotplug_apic - Handle a physical hotplugged APIC after boot
377  * @apic_id:	The APIC ID to set up
378  * @acpi_id:	The ACPI ID associated to the APIC
387 	/* Reject if the APIC ID was not registered during enumeration. */  in topology_hotplug_apic()
402  * topology_hotunplug_apic - Remove a physical hotplugged APIC after boot
403  * @cpu:	The CPU number for which the APIC ID is removed
449 	 * XEN PV is special as it does not advertise the local APIC  in restrict_to_up()
451 	 * infrastructure works. So don't apply the restrictions vs. APIC  in restrict_to_up()
469 	 * If there was no APIC registered, then fake one so that the  in topology_init_possible_cpus()
472 	 * unconditionally. This does not affect the actual APIC code in  in topology_init_possible_cpus()
473 	 * any way because either the local APIC address has not been  in topology_init_possible_cpus()
474 	 * registered or the local APIC was disabled on the command line.  in topology_init_possible_cpus()
553  * Late SMP disable after sizing CPU masks when APIC/IOAPIC setup failed.