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authorJoerg Roedel <jroedel@suse.de>2017-10-06 12:22:06 +0200
committerJoerg Roedel <jroedel@suse.de>2017-10-10 16:04:20 +0200
commit53b9ec3fbb7da97d13951debbd42e3a0c4a7c9f7 (patch)
tree997405f3b20a8130d440f5125f7cac36b2c03f5b /drivers/iommu
parent37946d95fc1a41ed79efb613b0818c2cdecbb2fa (diff)
iommu/amd: Enforce alignment for MSI IRQs
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: 2b324506341cb ('iommu/amd: Add routines to manage irq remapping tables') Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 2d4ee2555a0d..cb7c531542da 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -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");