Hello,

I'm new to port-sparc64, and have little knowledge of past progress of
NetBSD/sparc64.

> But remember the most important rule: do not mix 32-bit and 64-bit
> kernels and userlands.  A 64-bit kernel may limp along for a short
> time on a 32-bit userland before it dies, but a 32-bit kernel will
> immediately fail on a 64-bit userland.

What's the issue in NetBSD/sparc64 of 32bit userland support by 64bit
kernel?   Is it a technical difficulty or lack of imformation?

Tohru Nishimura