Re: [PATCH 6/9] iommufd: Have pfn_reader process DMABUF iopt_pages

On Fri, Nov 07, 2025 at 12:49:38PM -0400, Jason Gunthorpe wrote:

Make another sub implementation of pfn_reader for DMABUF. This version will fill the batch using the struct phys_vec recorded during the attachment.

Signed-off-by: Jason Gunthorpe jgg@nvidia.com

Reviewed-by: Nicolin Chen nicolinc@nvidia.com

@@ -1687,6 +1737,12 @@ static void __iopt_area_unfill_domain(struct iopt_area *area, lockdep_assert_held(&pages->mutex);

• if (iopt_is_dmabuf(pages)) {

• iopt_area_unmap_domain_range(area, domain, start_index,
  

• 			     last_index);
  

• return;
  

• }

Should it be: if (iopt_is_dmabuf(pages) && !iopt_dmabuf_revoked(pages)) { ?

Nicolin