Re: ptrace question ...
Jamie Lokier (lkd@tantalophile.demon.co.uk)
Tue, 1 Jun 1999 17:53:13 +0200
Ralf Baechle wrote:
> > Yes: if you remove the test, accessing the hardware still doesn't work!
>
> Obviously. However that code was written even before Linux 1.0 and
> at that time there was no ioremap that is all memory mappaple devices
> were permanently accessible.
At the time, there were no PCI devices with high physical addresses.
Hardware has moved on -- Linux 1.0 can't access those devices directly.
-- Jamie
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