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iommu/hyper-v: Implement select() method on remapping irqdomain

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Preparatory for removing irq_remapping_get_irq_domain()

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-27-dwmw2@infradead.org
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David Woodhouse 2020-10-24 22:35:26 +01:00 • committed by Thomas Gleixner
parent a87fb465ff
commit a491bb19f7
1 changed files with 9 additions and 0 deletions
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9
drivers/iommu/hyperv-iommu.c
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@ -101,7 +101,16 @@ static void hyperv_irq_remapping_free(struct irq_domain *domain,
irq_domain_free_irqs_common(domain, virq, nr_irqs); irq_domain_free_irqs_common(domain, virq, nr_irqs);
} }
static int hyperv_irq_remapping_select(struct irq_domain *d,
struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token)
{
/* Claim only the first (and only) I/OAPIC */
return x86_fwspec_is_ioapic(fwspec) && fwspec->param[0] == 0;
}
static const struct irq_domain_ops hyperv_ir_domain_ops = { static const struct irq_domain_ops hyperv_ir_domain_ops = {
.select = hyperv_irq_remapping_select,
.alloc = hyperv_irq_remapping_alloc, .alloc = hyperv_irq_remapping_alloc,
.free = hyperv_irq_remapping_free, .free = hyperv_irq_remapping_free,
}; };