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

Ar Iau, 2006-06-29 am 14:03 +0200, ysgrifennodd Bart Hartgers:
> > "snooping". So we do need the cache sorting out.
> >
> 
> If I understand correctly, trouble occurs when the processor tries to
> snoop? Would disabling (via MSR) and flushing the caches before changing
> the frequency help in that case?

I would think so. Some other processors have similar requirements for
deep sleeping.

Alan

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• References:
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    • From: Rafał Bilski <[email protected]>
  • Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaul by rw semaphores
    • From: Alan Cox <[email protected]>
  • Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaul by rw semaphores
    • From: Bart Hartgers <[email protected]>

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