On Tuesday 05 May 2009 11:11:27 David Howells wrote:
> Hannes Hering <hannes.her...@linux.vnet.ibm.com> wrote:
>
> > pref = skb_array[x];
> > - prefetchw(pref);
> > - prefetchw(pref + EHEA_CACHE_LINE);
> > + if (pref) {
> > + prefetchw(pref);
> > + prefetchw(pref + EHEA_CACHE_LINE);
>
> Ummm... Is prefetch() or prefetchw() faulting?
>
> David
Hi David,
this is an ehea driver problem, which is occuring when the receive queue runs
empty. The faulting code is more specifically the following line:
pref = (skb_array[x]->data);
Here the access to the struct element data would cause an exception.We could
have made the if block a little smaller.
Regards
Hannes
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