PCI/IMS works like PCI/MSI-X in the remapping. Just add the feature flag.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/iommu/intel/irq_remapping.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1429,7 +1429,9 @@ static const struct irq_domain_ops intel
 };
 
 static const struct msi_parent_ops dmar_msi_parent_ops = {
-	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED | MSI_FLAG_MULTI_PCI_MSI,
+	.supported_flags	= X86_VECTOR_MSI_FLAGS_SUPPORTED |
+				  MSI_FLAG_MULTI_PCI_MSI |
+				  MSI_FLAG_PCI_IMS,
 	.prefix			= "IR-",
 	.init_dev_msi_info	= msi_parent_init_dev_msi_info,
 };