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