cpu/mce/intel.c

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 int cmci_supported(int *banks)
97 	*banks = min_t(unsigned, MAX_NR_BANKS, cap & 0xff);
182 	/* Skip banks in firmware first mode */
240 		storm->banks[bank].poll_only = true;
256 	 * We are able to set thresholds for some banks that
271  * Enable CMCI (Corrected Machine Check Interrupt) for available MCE banks
273  * banks. Called during initial bootstrap, and also for hotplug CPU operations
274  * to rediscover/reassign machine check banks.
276 static void cmci_discover(int banks)
283 	for (i = 0; i < banks; i++) {
296 			"bios_cmci_threshold: Some banks do not have valid thresholds set\n");
304  * all the CMCI owned banks.
309 	int banks;
311 	if (!mce_available(raw_cpu_ptr(&cpu_info)) || !cmci_supported(&banks))
336  * Disable CMCI on this CPU for all banks it owns when it goes down.
337  * This allows other CPUs to claim the banks on rediscovery.
343 	int banks;
345 	if (!cmci_supported(&banks))
348 	for (i = 0; i < banks; i++)
355 	int banks;
357 	/* Recheck banks in case CPUs don't all have the same */
358 	if (cmci_supported(&banks))
359 		cmci_discover(banks);
365 	int banks;
367 	if (!cmci_supported(&banks))
378 	int banks;
379 	if (cmci_supported(&banks))
380 		cmci_discover(banks);
385 	int banks;
388 	if (!cmci_supported(&banks))
406 	int banks;
408 	if (!cmci_supported(&banks)) {
414 	cmci_discover(banks);
418 	 * check for the banks later for CPU #0 just to make sure