On Mon, 1 Nov 1999, Linus Torvalds wrote:
> > Second, I would like to get a final answer on the purpose of the __pa/__va
> > macros. So far I thought they could be used for fast address conversion
> > on kernel memory, but since they not widely used in the kernel, they
> > basically dummys in the m68k port. But bootmem.c uses them now quite often
> > and in the new pre-patch I see that the arm people did change these macros
> > and it makes no sense to me, except that it seems they want to get the
> > bootmem stuff working with virtual addresses (or better a faked continuous
> > physical address range).
>
> This is just Ingo being bad. He should have used virt_to_phys() and
> friends, not __pa().
That's not really a problem, if we could define that __pa()/__va() works
only specific memory areas and is completly undefined for others (except
for __va(), see other mail for that).
bye, Roman
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