[Xen-devel] Re: [patch] pae: tlbflush linear page table updates

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 Aug 2005, at 10:20, Andi Kleen wrote:

> > The compiler will never alias inputs. In this case it is forced to
> > alias the output constraint with input retval, and so the output
> > cannot alias with any other input (which would be an error).
> Actually it will sometimes. That is what the "early clobber" (&)
> prevents. Perhaps it should be used here.
Do you have an example?

 -- Keir


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