MMIO and gcc re-ordering issue

[Matthew Wilcox]

On Tue, May 27, 2008 at 10:38:22PM +0100, Alan Cox wrote:
> > re-ordering, even though I doubt it will be visible in practice. So if you 
> > use the "__" versions, you'd better have barriers even on x86!
> 
> Are we also going to have __ioread*/__iowrite* ?

Didn't we already define ioread*() to have loose semantics?

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