AMDGPU_PREAMBLE_IB_PRESENT_FIRST
job->preamble_status |= AMDGPU_PREAMBLE_IB_PRESENT_FIRST;
!(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
if (AMDGPU_PREAMBLE_IB_PRESENT_FIRST & flags)
if (AMDGPU_PREAMBLE_IB_PRESENT_FIRST & flags)