doorbell does not require va address mapping from userspace and hence
amdgpu_bo_va_op_common() function is not called and therefore doorbell
bo->vm_timeline_point is not updated. Currently to wait for all mappings
to be ready doorbell vm_timeline_point is used which is incorrect.
This patch updates vm_timeline_point to wait for all bos. The bos
can be real bo or slab bo. slab bo can be from old buffer and hence
there is a check to update vm_timeline_point to wait only if it is
new.
Reported-by: Zhang, ShanYi (Ken) <ShanYi.Zhang@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38059>