memory: Remove IOMMU MR iommu_set_iova_range API

Since the host IOVA ranges are now passed through the
PCIIOMMUOps set_host_resv_regions and we have removed
the only implementation of iommu_set_iova_range() in
the virtio-iommu and the only call site in vfio/common,
let's retire the IOMMU MR API and its memory wrapper.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

include/exec/memory.h

@@ -530,26 +530,6 @@ struct IOMMUMemoryRegionClass {
      int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu,
                                      uint64_t page_size_mask,
                                      Error **errp);
-    /**
-     * @iommu_set_iova_ranges:
-     *
-     * Propagate information about the usable IOVA ranges for a given IOMMU
-     * memory region. Used for example to propagate host physical device
-     * reserved memory region constraints to the virtual IOMMU.
-     *
-     * Optional method: if this method is not provided, then the default IOVA
-     * aperture is used.
-     *
-     * @iommu: the IOMMUMemoryRegion
-     *
-     * @iova_ranges: list of ordered IOVA ranges (at least one range)
-     *
-     * Returns 0 on success, or a negative error. In case of failure, the error
-     * object must be created.
-     */
-     int (*iommu_set_iova_ranges)(IOMMUMemoryRegion *iommu,
-                                  GList *iova_ranges,
-                                  Error **errp);
 };
 
 typedef struct RamDiscardListener RamDiscardListener;
@@ -1951,18 +1931,6 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
                                            uint64_t page_size_mask,
                                            Error **errp);
 
-/**
- * memory_region_iommu_set_iova_ranges - Set the usable IOVA ranges
- * for a given IOMMU MR region
- *
- * @iommu: IOMMU memory region
- * @iova_ranges: list of ordered IOVA ranges (at least one range)
- * @errp: pointer to Error*, to store an error if it happens.
- */
-int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu,
-                                        GList *iova_ranges,
-                                        Error **errp);
-
 /**
  * memory_region_name: get a memory region's name
  *

system/memory.c

@@ -1914,19 +1914,6 @@ int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
     return ret;
 }
 
-int memory_region_iommu_set_iova_ranges(IOMMUMemoryRegion *iommu_mr,
-                                        GList *iova_ranges,
-                                        Error **errp)
-{
-    IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
-    int ret = 0;
-
-    if (imrc->iommu_set_iova_ranges) {
-        ret = imrc->iommu_set_iova_ranges(iommu_mr, iova_ranges, errp);
-    }
-    return ret;
-}
-
 int memory_region_register_iommu_notifier(MemoryRegion *mr,
                                           IOMMUNotifier *n, Error **errp)
 {