Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaul by rw semaphores

Rafał Bilski
2006-06-29T18:54:29Z

> Maybe you need to do something with the cache bits in CR0 as well. It
> could be something like that. Hardware can be stuborn. I remember the
> old Winchips (C3 predecessors) hanging when trying to disable caching of
> plain ram via MCR's for instance.
>

I did it like in chapter 10.5.3. Result is exacly the same - processor
stops. If I set NW flag CPU is still going, but I have "exception in
interrupt" message.
I'm starting thinking that this will not work for "Nehemiah" core.

Thanks
Rafał

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