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And we are the unique owner of >> // fsp_fw (and therefore of fsp_fw.fmc_full). (A separate buffer, fsp_fw.fmc_image, is what >> // gets submitted to the hardware). >> let fmc_full_data = unsafe { fsp_fw.fmc_full.as_slice(0, fsp_fw.fmc_full.size())? }; > > If they're never submitted to hardware, why are they dma objects? > ah, right. That's leftover from my earlier bringup work. Of course, these can be separate allocations. If I change fmc_full to KVec, then the whole unsafe block just disappears. I've fixed this for v2, thanks for spotting that. thanks, -- John Hubbard