Boot hangs on ips0: resetting adapter, this may take up to 5 minutes

[Oleg Sharoiko]

Update: custom amd64 kernels with reduced set of devices work. Tested 
RELENG_6 and HEAD both SMP and UP. Should I try to find a pair of kernels 
similar one to another, one of which would work and another wouldn't?

I've also discovered that it looks like isp driver in RELENG_6 is not safe 
with more that 4Gb of RAM. Under moderate load with 6G I get

"isp0: deferred dma allocation not supported"

which leads to various errors and finally to kernel panic. The same load 
never created problems with hw.physmem=2g and hw.physmem=4g under RELENG_6 
and with 6G under HEAD.

-- 
Oleg Sharoiko.
Software and Network Engineer
Computer Center of Rostov State University.