Re: [parisc-linux] Cdrecord and parisc64 kernel

[Matthew Wilcox <willy@debian.org>]

On Fri, Jul 19, 2002 at 01:49:20PM +0200, Stefan Pfetzing wrote:
> I just installed Debian/hppa on my HP Visualize C200.
> After I've compiled a kernel for 64bit and tried to use cdrecord it crashed

from the FAQ:

14. Can I run a 64-bit kernel on my machine ?

The answer to this is generally determined by the firmware your machine
runs. Workstations up to and including the J2240 and C360 only have 32-bit
firmware. The normal 64-bit kernel will not run on these systems. The
A500 and L2000 server only have 64-bit firmware, and these machines must
run a 64-bit kernel. The C3000 and similar workstations have both 32-bit
and 64-bit firmware and can therefore run either kernel.

A more important question is : why do you want to run a 64-bit kernel ?
Since we do not yet support 64-bit userspace, there is no advantage
to be gained running a 64-bit kernel on a machine with less than 3.5GB
of memory.

For those who do want to test 64-bit kernels on older machines, there is a
special configuration option `32-bit PDC' which will allow a 64-bit kernel
to work with 32-bit firmware. We cannot enable this option by default
as the resulting kernel will not work on machines with 64-bit firmware.


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