> > The reverse mapping
> > code hast to be less than 0.1KB.
>
> If reverse mapping means bus_to_virt(), then I would suggest not to
> provide it since it is a confusing interface. OTOH, only a few drivers
> need or want to retrieve the virtual address that lead to some bus dma
Your SCSI code went the other way; the logic is about the same.
That's easy enough ... I'm not going to argue that point any longer.
The driver might even have Real Intelligence to apply. But I wonder
how many assumptions drivers will end up making about those dma
mappings. It may be important to expose the "logical" page size to
the driver ("don't cross 4k boundaries"); currently it's hidden.
Other than that L1_CACHE goof, it seems this was the main thing
needing to change in the I API sent by. Sound right? Implementation
would be a different question. I'm not in the least attached to what
I sent by, but some implementation is needed. Slab-like, or buddy? :)
> Does 'usable' apply to Java applications ? :-)
Servers and other non-gui tools? I don't see why not. You can make
good systems software in many languages. There are advantages to
not having those classes of memory-related bugs. I'm looking forward
to GCC 3.0 with GCJ, compiling Java just like C. But that's OT.
- Dave
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