iommu: Remove IOMMU_CAP_INTR_REMAP

No iommu driver implements this any more, get rid of it.

Link: https://lore.kernel.org/r/9-v3-3313bb5dd3a3+10f11-secure_msi_jgg@nvidia.com
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 4c2199a..834e6ec 100644 (file)
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1914,10 +1914,8 @@ bool iommu_group_has_isolated_msi(struct iommu_group *group)
        bool ret = true;
 
        mutex_lock(&group->mutex);
-       list_for_each_entry(group_dev, &group->devices, list) {
-               ret &= msi_device_has_isolated_msi(group_dev->dev) ||
-                      device_iommu_capable(group_dev->dev, IOMMU_CAP_INTR_REMAP);
-       }
+       list_for_each_entry(group_dev, &group->devices, list)
+               ret &= msi_device_has_isolated_msi(group_dev->dev);
        mutex_unlock(&group->mutex);
        return ret;
 }

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9b7a9fa..933cc57 100644 (file)
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -120,7 +120,6 @@ static inline bool iommu_is_dma_domain(struct iommu_domain *domain)
 
 enum iommu_cap {
        IOMMU_CAP_CACHE_COHERENCY,      /* IOMMU_CACHE is supported */
-       IOMMU_CAP_INTR_REMAP,           /* IOMMU supports interrupt isolation */
        IOMMU_CAP_NOEXEC,               /* IOMMU_NOEXEC flag */
        IOMMU_CAP_PRE_BOOT_PROTECTION,  /* Firmware says it used the IOMMU for
                                           DMA protection and we should too */