memory: remove IOMMU MR iommu_set_page_size_mask() callback

Everything is now in place to use the Host IOMMU Device callbacks
to retrieve the page size mask usable with a given assigned device.
This new method brings the advantage to pass the info much earlier
to the virtual IOMMU and before the IOMMU MR gets enabled. So let's
remove the call to memory_region_iommu_set_page_size_mask in
vfio common.c and remove the single implementation of the IOMMU MR
callback in the virtio-iommu.c

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

1 files changed, 0 insertions, 38 deletions

diff --git a/include/exec/memory.h b/include/exec/memory.h
index c26ede3..02f7528 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -504,32 +504,6 @@ struct IOMMUMemoryRegionClass {
      * @iommu: the IOMMUMemoryRegion
      */
     int (*num_indexes)(IOMMUMemoryRegion *iommu);
-
-    /**
-     * @iommu_set_page_size_mask:
-     *
-     * Restrict the page size mask that can be supported with a given IOMMU
-     * memory region. Used for example to propagate host physical IOMMU page
-     * size mask limitations to the virtual IOMMU.
-     *
-     * Optional method: if this method is not provided, then the default global
-     * page mask is used.
-     *
-     * @iommu: the IOMMUMemoryRegion
-     *
-     * @page_size_mask: a bitmask of supported page sizes. At least one bit,
-     * representing the smallest page size, must be set. Additional set bits
-     * represent supported block sizes. For example a host physical IOMMU that
-     * uses page tables with a page size of 4kB, and supports 2MB and 4GB
-     * blocks, will set mask 0x40201000. A granule of 4kB with indiscriminate
-     * block sizes is specified with mask 0xfffffffffffff000.
-     *
-     * Returns 0 on success, or a negative error. In case of failure, the error
-     * object must be created.
-     */
-     int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu,
-                                     uint64_t page_size_mask,
-                                     Error **errp);
 };
 
 typedef struct RamDiscardListener RamDiscardListener;
@@ -1920,18 +1894,6 @@ int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
 int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr);
 
 /**
- * memory_region_iommu_set_page_size_mask: set the supported page
- * sizes for a given IOMMU memory region
- *
- * @iommu_mr: IOMMU memory region
- * @page_size_mask: supported page size mask
- * @errp: pointer to Error*, to store an error if it happens.
- */
-int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
-                                           uint64_t page_size_mask,
-                                           Error **errp);
-
-/**
  * memory_region_name: get a memory region's name
  *
  * Returns the string that was used to initialize the memory region.