x86, io_apic: Introduce eoi_ioapic_pin call-back

This callback replaces the old __eoi_ioapic_pin function
which needs a special path for interrupt remapping.

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, 12 insertions, 0 deletions

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 158091b345cb..849ce4ce500b 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -143,11 +143,23 @@ static int irq_remapping_setup_msi_irqs(struct pci_dev *dev,
                 return do_setup_msix_irqs(dev, nvec);
 }
 
+void eoi_ioapic_pin_remapped(int apic, int pin, int vector)
+{
+        /*
+         * Intr-remapping uses pin number as the virtual vector
+         * in the RTE. Actual vector is programmed in
+         * intr-remapping table entry. Hence for the io-apic
+         * EOI we use the pin number.
+         */
+        io_apic_eoi(apic, pin);
+}
+
 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_io_apic_ops.setup_entry     = setup_ioapic_remapped_entry;
+        x86_io_apic_ops.eoi_ioapic_pin  = eoi_ioapic_pin_remapped;
         x86_msi.setup_msi_irqs          = irq_remapping_setup_msi_irqs;
         x86_msi.setup_hpet_msi          = setup_hpet_msi_remapped;
         x86_msi.compose_msi_msg         = compose_remapped_msi_msg;