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iommu/amd: Enforce alignment for MSI IRQs

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Make use of the new alignment capability of
alloc_irq_index() to enforce IRQ index alignment
for MSI.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Fixes: 2b32450634 ('iommu/amd: Add routines to manage irq remapping tables')
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-10-06 12:22:06 +02:00
parent 37946d95fc
commit 53b9ec3fbb
1 changed files with 3 additions and 1 deletions
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4
drivers/iommu/amd_iommu.c
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@ -4102,7 +4102,9 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
else
ret = -ENOMEM;
} else {
index = alloc_irq_index(devid, nr_irqs, false);
bool align = (info->type == X86_IRQ_ALLOC_TYPE_MSI);
index = alloc_irq_index(devid, nr_irqs, align);
}
if (index < 0) {
pr_warn("Failed to allocate IRTE\n");