On Tue, Dec 12, 2006 at 03:17:59PM +0100, Bernd Walter wrote:
> On Tue, Dec 12, 2006 at 05:57:56AM -0800, Luigi Rizzo wrote:
...
> > then i suppose the proper fix is to revert to m_copy() and
> > work on if_simloop() so that 1. it handles a readonly chain, and
> > 2. when doing so, it passes up a properly aligned packet...
> 
> Can't comment on this, as I don't have enough knowledge about network
> code.
> According to the xscale report it was likely never properly aligned,
> the alignment obviously just moved with your change.
> 
> > however note that there is already some code in net/if_loop.c::if_simloop(),
> > just that it uses this:
> > 
> >     #if defined(__ia64__) || defined(__sparc64__)
...
> > to detect whether the architecture is alignment-sensitive.
> > Is there any other identifier that we can use to check ?
> 
> I wonder how many of these are missing __arm__?

and this is why i wonder if there is a generic identifier
that we can use to provide alignment.

cheers
luigi
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