On 2023/9/26 13:32, Tian, Kevin wrote:
From: Liu, Yi L <[email protected]>
Sent: Tuesday, September 19, 2023 5:25 PM
@@ -83,6 +83,9 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx,
struct iommufd_ioas *ioas,
lockdep_assert_held(&ioas->mutex);
+ if ((flags & IOMMU_HWPT_ALLOC_NEST_PARENT) && !ops-
domain_alloc_user)
+ return ERR_PTR(-EOPNOTSUPP);
+
if (flags && !ops->domain_alloc_user)
return ERR_PTR(-EOPNOTSUPP);
as long as flags is non-zero we'll need the new alloc_user ops.
yes.
--
Regards,
Yi Liu
