iommu/amd: Allocate IOMMU irqs using numa locality info

Use numa information to allocate irq resources and also to set
irq affinity. This optimizes the IOMMU interrupt handling.

Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Reviewed-by: Alexey Kardashevskiy <aik@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20230321092348.6127-3-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: hegdevasant

drivers/iommu/amd/init.c

@@ -2383,6 +2383,7 @@ static int iommu_setup_intcapxt(struct amd_iommu *iommu)
 	struct irq_domain *domain;
 	struct irq_alloc_info info;
 	int irq, ret;
+	int node = dev_to_node(&iommu->dev->dev);
 
 	domain = iommu_get_irqdomain();
 	if (!domain)
@@ -2392,7 +2393,7 @@ static int iommu_setup_intcapxt(struct amd_iommu *iommu)
 	info.type = X86_IRQ_ALLOC_TYPE_AMDVI;
 	info.data = iommu;
 
-	irq = irq_domain_alloc_irqs(domain, 1, NUMA_NO_NODE, &info);
+	irq = irq_domain_alloc_irqs(domain, 1, node, &info);
 	if (irq < 0) {
 		irq_domain_remove(domain);
 		return irq;