re: Is the kernel for sun4m SMP capable ?

i've been meaning to test how much it costs to run GENERIC.MP
on eg, an older UP system (sun4/sun4c).  if it's a lot, maybe
figure out a boot time patch to help.

when i tested on sparc64, i couldn't observe any speed diff
betweeen GENERIC and GENERIC.MP, so i just enabled MP in the
base kernel, which also solved a problem on usIIIi systems -
dual socket usIIIi are effectively NUMA, where some memory
is attached it this CPU, and some the other.  we hang on
UP kernels in this setup, i'm not sure why or how exactly
to interrogate the setup to determine ram to ignore.


.mrg.