[openib-general] Re: ia64: kernel unaligned access in ipoib

[Roland Dreier]

    Michael> It seems Jack has found it (see below). Since you cast
    Michael> the pointer to struct ib_gid type, and then pass a struct
    Michael> pointer to memcpy, it assumes the address is naturally
    Michael> aligned and replaces memcpy with inline st8/ld8
    Michael> instructions which can't operate on misaligned addresses.

Hmm, that's strange behavior (I would expect memcpy to work regardless
of alignment), but I guess it's technically a valid optimization.

I'll post a patch tomorrow when I'm back at work (today is Memorial
Day in the US).

 - R.