Markus Baeurle wrote:

> Second (and more frequent) one:
> Data abort: Translation fault (section) status=005, addr=400000, PC=f0098250
> Section fault in SVC mode
> [u]vm_fault(0xf1251f00,400000,1,0) -> 1
>             ^^^^differs
> panic: Halting (frame=0xf2a2cd9c) <- always the same
> 
> Traceback:
> _Debugger(0x10)
> _panic(0x14)
> _data_abort_handler(0x10)
> _amap_copy(0x10)
> _udv_attach(0x604)
> _uvm_fault(0x10)
> _data_abort_handler(0x10)
> 
> Hope you have an idea what the problem could be.

A missing page table. I'd hope that anything would have gone via
pmap_enter() before, though, so I can't see why this could happen. I'll
have a look at the code when I've finished unpacking to see if there's
anything obvious, but I'd think that, if it was obvious, it'd have
happened to others too. How many other people are reporting problems
with UVM, and on what machines?

Markus, is there a way of reproducing this easily?

Just flogging that old horse---does it happen with the SIMMs both ways
round?

	Regards,

	Neil

-- 
Neil A. Carson