> The tricky bit is to avoid prefetches over the boundary of your copy.
> Prefetching from an uncached area or write combined area (like the
> AGP gart which could start in next page) triggers hardware bugs in
> various boxes. This unfortunately complicates the prefetching loops
> a bit.
CONFIG_MY_MACHINE_AINT_BORKEN? We definitely could assume that on x86-64.
Pavel
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