:Well, turned out it was my fault. mmap_ops carries a_result as page frame number, not as byte offset. I think that should be changed, but I have the feeling that you only recently changed this in the other way? Using byte offsets would be easier to reason about, tho. : :cheers : simon
mmap_ops? Do you mean dev_ops/d_mmap ? Hmm... yah, looking at the BKTR driver it looks like it's returning a page number rather then a physical address. I would personally prefer a physical address, and we could make that change fairly easily. There are only a few drivers that actually use the feature and all the device pager does is convert it back to a physical address anyhow :-) -Matt