Re: MMIO and gcc re-ordering issue

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Jesse Barnes wrote:
Now, in hindsight, using a PIO write set & test flag approach in writeX/spin_unlock (ala powerpc) might have been a better approach, but iirc that never came up in the discussion, probably because we were focused on PCI posting and not uncached vs. cached ordering.

Hi Jesse,

I am going to take a stab at implementing this so we can see how much
of an impact it will have.

Cheers,
Jes
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