Re: [PATCH bpf-next v3 1/3] xsk: Support UMEM chunk_size > PAGE_SIZE

From: Kal Cutter Conley
Date: Thu Apr 13 2023 - 18:07:20 EST


> "More annoying" is not a great argument, though. You're basically saying
> "please complicate your code so I don't have to complicate mine". And
> since kernel API is essentially frozen forever, adding more of them
> carries a pretty high cost, which is why kernel developers tend not to
> be easily swayed by convenience arguments (if all you want is a more
> convenient API, just build one on top of the kernel primitives and wrap
> it into a library).

I was trying to make a fair comparison from the user's perspective
between having to allocate huge pages and deal with discontiguous
buffers. That was all.

I think the "your code" distinction is a bit harsh. The kernel is a
community project. Why isn't it "our" code? I am trying to add a
feature that I think is generally useful to people. The kernel only
exists to serve its users. I believe I am doing more good than harm
sending these patches.