On Tue, May 27, 2014 at 09:23:30PM +0100, Benjamin Herrenschmidt wrote:
> On Tue, 2014-05-27 at 20:34 +0100, Will Deacon wrote:
>
> > Do you mean the io{read,write} functions? Funnily enough, they're already
> > relaxed on ARM if you go by the semantics I've proposed. That implies we at
> > least need some Documentation to that effect...
> >
> > What do you do on ppc?
>
> They are not supposed to be relaxed. If they are, you probably have a
> whole lot of busted drivers :-)
Lucky me!
> They have the same semantics as readl/writel for memory and as inb/outb
> for IO space, they just allow to hide the "type" (memory vs. IO) from
> most of the driver code.
>
> We probably need to create a set of _relaxed variants.
Ok. I'll try putting together a v3 including this and the mmiowb work.
Thanks for the feedback,
Will
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