> But, having those flushes won't hurt either. What was the conclusion of
> mmio <-> spinlock sync discussion? I always feel kind of uncomfortable
> about readl() flushes. I think they're too subtle.
those are orthogonal!
The posting flushes have nothing to do with spinlock-vs-mmio; that
discussion was about the CPU, while posting flushes are about the
chipset / bridges / etc....
>
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