[PATCH 2/2] iommu/amd: Enforce alignment for MSI IRQs

[Joerg Roedel]

From: Joerg Roedel <jroe...@suse.de>

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

Reported-by: Thomas Gleixner <t...@linutronix.de>
Fixes: 2b324506341cb ('iommu/amd: Add routines to manage irq remapping tables')
Signed-off-by: Joerg Roedel <jroe...@suse.de>
---
 drivers/iommu/amd_iommu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 2d4ee25..cb7c531 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");
-- 
2.7.4