Re: Ordering between PCI config space writes and MMIO reads?

Roland Dreier
2006-10-25T14:06:04Z

> I'll check if there is any additional reordering that can occur AFTER the
> PIO_WRITE_COUNT goes to zero. If so, it would be at bus level - not in
> shub or routers.

Unfortunately, at least in theory, the reordering can occur. For
example a bridge on some card plugged into an SN slot is allowed to
reorder things too.

- R.