Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 2/2] iommu/amd: Enforce alignment for MSI IRQs | Date | Fri, 6 Oct 2017 13:34:12 +0200 |
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From: Joerg Roedel <jroedel@suse.de>
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') Signed-off-by: Joerg Roedel <jroedel@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
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