Michael S. Tsirkin wrote:
Sounds like a lot of work :).
I think that it's less work than the alternative.
Are there benefits to this approach as opposed to implementing everything in a library on top of ucm/uverbs?
I considered, and continue to consider implementing on top of ucm. The drawbacks are: it requires more kernel modules: one for the CM, one for SA query, and one for address translation. It complicates the event model, since the uCMA must now deal with events from three different sources, rather than one. And it duplicates a majority of the kernel CMA code in userspace.
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