2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index c9171be74564..6a5af18faf68 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3698,6 +3698,8 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain,
 
         if (cap == IOMMU_CAP_CACHE_COHERENCY)
                 return dmar_domain->iommu_snooping;
+        if (cap == IOMMU_CAP_INTR_REMAP)
+                return intr_remapping_enabled;
 
         return 0;
 }
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index be22ad83689c..0a2ba4098996 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -30,6 +30,7 @@ struct iommu_domain {
 };
 
 #define IOMMU_CAP_CACHE_COHERENCY       0x1
+#define IOMMU_CAP_INTR_REMAP            0x2     /* isolates device intrs */
 
 struct iommu_ops {
         int (*domain_init)(struct iommu_domain *domain);