x86, io_apic: Introduce set_affinity function pointer

With interrupt remapping a special function is used to
change the affinity of an IO-APIC interrupt. Abstract this
with a function pointer.

Signed-off-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 20f04b67efd2..67b243c6c4e9 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -26,6 +26,9 @@ static struct irq_remap_ops *remap_ops;
 static int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec);
 static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq,
                                   int index, int sub_handle);
+static int set_remapped_irq_affinity(struct irq_data *data,
+                                     const struct cpumask *mask,
+                                     bool force);
 
 static void irq_remapping_disable_io_apic(void)
 {
@@ -142,6 +145,7 @@ static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
 static void __init irq_remapping_modify_x86_ops(void)
 {
         x86_io_apic_ops.disable         = irq_remapping_disable_io_apic;
+        x86_io_apic_ops.set_affinity    = set_remapped_irq_affinity;
         x86_msi.setup_msi_irqs          = irq_remapping_setup_msi_irqs;
         x86_msi.setup_hpet_msi          = setup_hpet_msi_remapped;
 }