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b4ff8389ed
After commit 8c058b0b9c ("x86/irq: Probe for PIC presence before
allocating descs for legacy IRQs") early_irq_init() will no longer
preallocate descriptors for legacy interrupts if PIC does not
exist, which is the case for Xen PV guests.
Therefore we may need to allocate those descriptors ourselves.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
29 lines
559 B
C
29 lines
559 B
C
#ifndef __ASM_IRQ_H
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#define __ASM_IRQ_H
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#include <linux/irqchip/arm-gic-acpi.h>
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#include <asm-generic/irq.h>
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struct pt_regs;
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extern void migrate_irqs(void);
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extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
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static inline void acpi_irq_init(void)
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{
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/*
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* Hardcode ACPI IRQ chip initialization to GICv2 for now.
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* Proper irqchip infrastructure will be implemented along with
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* incoming GICv2m|GICv3|ITS bits.
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*/
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acpi_gic_init();
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}
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#define acpi_irq_init acpi_irq_init
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static inline int nr_legacy_irqs(void)
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{
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return 0;
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}
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#endif
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