1 // SPDX-License-Identifier: GPL-2.0-only
44  * 'what should we do if we get a hw irq event on an illegal vector'.
55 	 * irq slots per priority level, and a 'hanging, unacked' IRQ  in ack_bad_irq()
56 	 * holds up an irq slot - in excessive cases (when multiple  in ack_bad_irq()
59 	 * But only ack when the APIC is enabled -AK  in ack_bad_irq()
74 		seq_printf(p, "%10u ", irq_stats(j)->__nmi_count);  in arch_show_interrupts()
75 	seq_puts(p, "  Non-maskable interrupts\n");  in arch_show_interrupts()
79 		seq_printf(p, "%10u ", irq_stats(j)->apic_timer_irqs);  in arch_show_interrupts()
84 		seq_printf(p, "%10u ", irq_stats(j)->irq_spurious_count);  in arch_show_interrupts()
88 		seq_printf(p, "%10u ", irq_stats(j)->apic_perf_irqs);  in arch_show_interrupts()
92 		seq_printf(p, "%10u ", irq_stats(j)->apic_irq_work_irqs);  in arch_show_interrupts()
96 		seq_printf(p, "%10u ", irq_stats(j)->icr_read_retry_count);  in arch_show_interrupts()
101 			seq_printf(p, "%10u ", irq_stats(j)->x86_platform_ipis);  in arch_show_interrupts()
108 		seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);  in arch_show_interrupts()
110 	seq_printf(p, "%*s: ", prec, "CAL");  in arch_show_interrupts()
112 		seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);  in arch_show_interrupts()
116 		seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);  in arch_show_interrupts()
122 		seq_printf(p, "%10u ", irq_stats(j)->irq_thermal_count);  in arch_show_interrupts()
128 		seq_printf(p, "%10u ", irq_stats(j)->irq_threshold_count);  in arch_show_interrupts()
134 		seq_printf(p, "%10u ", irq_stats(j)->irq_deferred_error_count);  in arch_show_interrupts()
152 				   irq_stats(j)->irq_hv_callback_count);  in arch_show_interrupts()
161 				   irq_stats(j)->irq_hv_reenlightenment_count);  in arch_show_interrupts()
162 		seq_puts(p, "  Hyper-V reenlightenment interrupts\n");  in arch_show_interrupts()
168 				   irq_stats(j)->hyperv_stimer0_count);  in arch_show_interrupts()
169 		seq_puts(p, "  Hyper-V stimer0 interrupts\n");  in arch_show_interrupts()
179 		seq_printf(p, "%10u ", irq_stats(j)->kvm_posted_intr_ipis);  in arch_show_interrupts()
180 	seq_puts(p, "  Posted-interrupt notification event\n");  in arch_show_interrupts()
185 			   irq_stats(j)->kvm_posted_intr_nested_ipis);  in arch_show_interrupts()
186 	seq_puts(p, "  Nested posted-interrupt event\n");  in arch_show_interrupts()
191 			   irq_stats(j)->kvm_posted_intr_wakeup_ipis);  in arch_show_interrupts()
192 	seq_puts(p, "  Posted-interrupt wakeup event\n");  in arch_show_interrupts()
198 			   irq_stats(j)->posted_msi_notification_count);  in arch_show_interrupts()
209 	u64 sum = irq_stats(cpu)->__nmi_count;  in arch_irq_stat_cpu()
212 	sum += irq_stats(cpu)->apic_timer_irqs;  in arch_irq_stat_cpu()
213 	sum += irq_stats(cpu)->irq_spurious_count;  in arch_irq_stat_cpu()
214 	sum += irq_stats(cpu)->apic_perf_irqs;  in arch_irq_stat_cpu()
215 	sum += irq_stats(cpu)->apic_irq_work_irqs;  in arch_irq_stat_cpu()
216 	sum += irq_stats(cpu)->icr_read_retry_count;  in arch_irq_stat_cpu()
218 		sum += irq_stats(cpu)->x86_platform_ipis;  in arch_irq_stat_cpu()
221 	sum += irq_stats(cpu)->irq_resched_count;  in arch_irq_stat_cpu()
222 	sum += irq_stats(cpu)->irq_call_count;  in arch_irq_stat_cpu()
225 	sum += irq_stats(cpu)->irq_thermal_count;  in arch_irq_stat_cpu()
228 	sum += irq_stats(cpu)->irq_threshold_count;  in arch_irq_stat_cpu()
231 	sum += irq_stats(cpu)->irq_hv_callback_count;  in arch_irq_stat_cpu()
234 	sum += irq_stats(cpu)->irq_hv_reenlightenment_count;  in arch_irq_stat_cpu()
235 	sum += irq_stats(cpu)->hyperv_stimer0_count;  in arch_irq_stat_cpu()
283 	 * Reevaluate with vector_lock held to prevent a race against  in call_irq_handler()
301 	 * handed out or that a spurious interrupt hits that CPU/vector.  in call_irq_handler()
316  * cross-CPU interrupts have their own entry points).
409 	 * VT-d spec. CH 9.11  in intel_posted_msi_init()
454 	 * MAX_POSTED_MSI_COALESCING_LOOP - 1 loops are executed here.  in DEFINE_IDTENTRY_SYSVEC()
457 		if (!handle_pending_pir(pid->pir, regs))  in DEFINE_IDTENTRY_SYSVEC()
468 	 * There could be a race of PI notification and the clearing of ON bit,  in DEFINE_IDTENTRY_SYSVEC()
472 	handle_pending_pir(pid->pir, regs);  in DEFINE_IDTENTRY_SYSVEC()
481 /* A cpu has been removed from cpu_online_mask.  Reset irq affinities. */
514 			raw_spin_lock(&desc->lock);  in fixup_irqs()
517 			if (chip->irq_retrigger) {  in fixup_irqs()
518 				chip->irq_retrigger(data);  in fixup_irqs()
521 			raw_spin_unlock(&desc->lock);  in fixup_irqs()