| 1 | |
| 2 |
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| 3 | #include <linux/interrupt.h>
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| 4 | #include <linux/irq.h>
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| 5 | #include <linux/irqdesc.h>
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| 6 | #include <linux/irqnr.h>
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| 7 |
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| 8 | #include "internals.h"
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| 9 |
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| 10 | void machine_kexec_mask_interrupts(void)
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| 11 | {
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| 12 | struct irq_desc *desc;
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| 13 | unsigned int i;
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| 14 |
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| 15 | for_each_irq_desc(i, desc) {
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| 16 | struct irq_chip *chip;
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| 17 | int check_eoi = 1;
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| 18 |
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| 19 | chip = irq_desc_get_chip(desc);
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| 20 | if (!chip || !irqd_is_started(&desc->irq_data))
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| 21 | continue;
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| 22 |
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| 23 | if (IS_ENABLED(CONFIG_GENERIC_IRQ_KEXEC_CLEAR_VM_FORWARD)) {
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| 24 | |
| 25 | * First try to remove the active state from an interrupt which is forwarded
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| 26 | * to a VM. If the interrupt is not forwarded, try to EOI the interrupt.
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| 27 |
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| 28 | check_eoi = irq_set_irqchip_state(i, IRQCHIP_STATE_ACTIVE, false);
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| 29 | }
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| 30 |
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| 31 | if (check_eoi && chip->irq_eoi && irqd_irq_inprogress(&desc->irq_data))
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| 32 | chip->irq_eoi(&desc->irq_data);
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| 33 |
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| 34 | irq_shutdown(desc);
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| 35 | }
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| 36 | }
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