27  * Also supports reliable discovery of shared banks.
36  * some MCA banks are shared across cpus. When a cpu is offlined, cmci_clear()
37  * disables CMCI on all banks owned by the cpu and clears this bitfield. At
39  * taking ownership of some of the shared MCA banks that were previously
78 static bool cmci_supported(int *banks)  in cmci_supported()  argument
98 	*banks = min_t(unsigned, MAX_NR_BANKS, cap & MCG_BANKCNT_MASK);  in cmci_supported()
183 	/* Skip banks in firmware first mode */  in cmci_skip_bank()
241 		storm->banks[bank].poll_only = true;  in cmci_claim_bank()
257 	 * We are able to set thresholds for some banks that  in cmci_claim_bank()
272  * Enable CMCI (Corrected Machine Check Interrupt) for available MCE banks
274  * banks. Called during initial bootstrap, and also for hotplug CPU operations
275  * to rediscover/reassign machine check banks.
277 static void cmci_discover(int banks)  in cmci_discover()  argument
284 	for (i = 0; i < banks; i++) {  in cmci_discover()
297 			"bios_cmci_threshold: Some banks do not have valid thresholds set\n");  in cmci_discover()
305  * all the CMCI owned banks.
310 	int banks;  in cmci_recheck()  local
312 	if (!mce_available(raw_cpu_ptr(&cpu_info)) || !cmci_supported(&banks))  in cmci_recheck()
337  * Disable CMCI on this CPU for all banks it owns when it goes down.
338  * This allows other CPUs to claim the banks on rediscovery.
344 	int banks;  in cmci_clear()  local
346 	if (!cmci_supported(&banks))  in cmci_clear()
349 	for (i = 0; i < banks; i++)  in cmci_clear()
356 	int banks;  in cmci_rediscover_work_func()  local
358 	/* Recheck banks in case CPUs don't all have the same */  in cmci_rediscover_work_func()
359 	if (cmci_supported(&banks))  in cmci_rediscover_work_func()
360 		cmci_discover(banks);  in cmci_rediscover_work_func()
366 	int banks;  in cmci_rediscover()  local
368 	if (!cmci_supported(&banks))  in cmci_rediscover()
379 	int banks;  in cmci_reenable()  local
380 	if (cmci_supported(&banks))  in cmci_reenable()
381 		cmci_discover(banks);  in cmci_reenable()
386 	int banks;  in cmci_disable_bank()  local
389 	if (!cmci_supported(&banks))  in cmci_disable_bank()
407 	int banks;  in intel_init_cmci()  local
409 	if (!cmci_supported(&banks)) {  in intel_init_cmci()
415 	cmci_discover(banks);  in intel_init_cmci()
419 	 * check for the banks later for CPU #0 just to make sure  in intel_init_cmci()