[PATCH RFCv2 08/13] iommu: Turn iova_cookie to dma-iommu private pointer

[Nicolin Chen]

Now, iommufd has its own iommufd_sw_msi using iommufd_hwpt, the iommufd
owned domain's private pointer. Similarly, iova_cookie can be seen as a
dma-iommu owned domain's private pointer. So, move iova_cookie into the
union.

Signed-off-by: Nicolin Chen <nicol...@nvidia.com>
---
 include/linux/iommu.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index b6526d734f30..284c40fe0e12 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -216,7 +216,6 @@ struct iommu_domain {
        const struct iommu_ops *owner; /* Whose domain_alloc we came from */
        unsigned long pgsize_bitmap;    /* Bitmap of page sizes in use */
        struct iommu_domain_geometry geometry;
-       struct iommu_dma_cookie *iova_cookie;
        int (*iopf_handler)(struct iopf_group *group);
 
 #if IS_ENABLED(CONFIG_IRQ_MSI_IOMMU)
@@ -225,6 +224,7 @@ struct iommu_domain {
 #endif
 
        union { /* Pointer usable by owner of the domain */
+               struct iommu_dma_cookie *iova_cookie; /* dma-iommu */
                struct iommufd_hw_pagetable *iommufd_hwpt; /* iommufd */
        };
        union { /* Fault handler */
-- 
2.43.0