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