From: Rick Jones <[email protected]>
Date: Mon, 14 Aug 2006 10:42:55 -0700
> Now, PA-RISC CPUs have the ability to disable spaceid hashing, and it is
> entirely possible that the PA-RISC linux port does that, but I thought I
> would mention it as an example. I'm sure the "official" PA-RISC linux
> folks can expand on that much much better than I can.
Regardless, the "offset" it usually taken care of transparently
by the kernel in order to avoid cache aliasing issues.
It is definitely something we'll need to deal with for zero-copy
I/O using NTA. We'll have to make sure that the user mapping of
the page is of the same color as the mapping the kernel uses.
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