Matthew Chapman wrote:
> Jes,
> 
> Glad you tracked it down.  Can I suggest rather than using memcpy, a
> more efficient way might be something like...
> 
> #define ZERO_EXTEND(x,bits) ((x) & (~0UL >> (64-(bits))))
> 
> *dest = ZERO_EXTEND(p->u.ioreq.data, 8*s);

Much nicer indeed!

Here's a pretty version - Tony will you apply this one instead.

Cheers,
Jes