Re: Cache incoherencies [example code]

Philip Blundell (Philip.Blundell@pobox.com)
Mon, 30 Aug 1999 13:19:06 +0100

>datas are not correctly read by the chip, so I beleive this is because
>virt_to_bus doesn't work with vmalloc addresses, am I wrong ?

That's true, it doesn't. To get the physical address you need to walk
pagetables as someone (either Roger or Ralf I think) pointed out. I think
there is code in ptrace.c that shows how this is done but it's not really
recommended practice.

So, maybe the vmalloc idea wasn't such a good one after all and some
completely new routine is needed.

p.

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