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SubjectRe: 2.1.125 - Problem. & Aic7xxx 5.1.0
Date
> The mb() macro does a memory locked operation to force ordering.  If that
> doesn't do the PCI flush, then that was a mis-understanding on my part

It will force ordering on x86 - x86 pci ordering should be guaranteed
anyway in theory (unless people play with mtrr settings).

The m68k/ppc folks are now starting to add io synchronization stuff portably
(no files full of eieio() even if its funny) with

iobarrier_r()
iobarrier_w()
iobarrier_rw()

which are nops on a normal PC.

Alan

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