Hey Matthew,

On Thu, Jul 08, 2021 at 01:58:32AM +0100, Matthew Wilcox wrote:

Why are you so resistant to writing a real driver that deals with actual
hardware?  

I don't think it was so much resistance but rather a prioritisation thing. Have
you by any chance seen the gpio driver I posted a couple of days ago?

A simple NVMe driver is less than a thousand lines of C.
I know the one in the kernel now is ridiculously complicated and has
been thoroughly messed up with abstractions to support NVMeoF instead
of having a separate driver, but it's really a simple interface at heart.

The latest NVMe spec is 452 pages long, which seems to contradict your claim
that it's simple. In any case, translating less than 1K lines of C shouldn't be
too hard (after I've built the abstractions, of course). Would you mind sharing
the simple driver you mention above?

Thanks,
-Wedson