Re: MMIO and gcc re-ordering issue

Jes Sorensen
2008-06-05T08:40:54Z

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