Looks like I have found the problem. 2.2.10 with
arch/alpha/kernel/entry.S from 2.2.7 works flawlessly for me.
Can anybody confirm that?
One suspicious change in 2.2.8 was removing `call_pal PAL_tbi' after
PAL_swpctx. What could that mean... I have not tried to back-out that
part of patch yet, maybe someone will figure out what was wrong with 2.2.8
patch.
Alexander.