Re: [PATCH 1/2] drm/panfrost: Allow passing extra information about BOs used by a job

...

• /**

• * Pointer to a u32 array of &drm_panfrost_submit_bo_desc objects. This
  

• * field is meant to replace &drm_panfrost_submit.bo_handles which did
  

• * not provide enough information to relax synchronization between
  

• * jobs that only only read the BO they share. When both
  

• * &drm_panfrost_submit.bo_handles and &drm_panfrost_submit.bo_descs
  

• * are provided, drm_panfrost_submit.bo_handles is ignored.
  

• */
  

• __u64 bo_descs;
• /**

• * Number of BO descriptors passed in (size is that times
  

• * sizeof(drm_panfrost_submit_bo_desc)).
  

• */
  

• __u32 bo_desc_count;

We don't really need another count field. bo_handle_count could be re-used. Indeed this could even be handled with just a flags field with a new flag specifying that bo_handles no longer points to handles but to bo_desc objects instead.

This seems like the cleaniest approach (also bumping the ABI version).