Re: how is processor cache coherency maintained for device drivers

Mike Fedyk (mfedyk@matchmail.com)
Mon, 12 Nov 2001 13:59:12 -0800

On Sun, Nov 11, 2001 at 08:55:52AM -0800, James Bottomley wrote:
> I believe (although you should take better advice from the PPC people) that
> the powerpc is completely cache coherent, so any coherency problems you may be
> having would be due to the hardware, not the kernel.
>

IIRC (probably wrong though) the PPC is not coherent for one of its caches,
but is for another. PPC people would definately know the details, I'm just
thinking of a thread I read on this a few weeks ago...

Mike
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