Re: [PPC64] Allow emulation of mfpvr on ppc64 kernel

From: David Gibson
Date: Thu Mar 10 2005 - 19:50:34 EST

On Thu, Mar 10, 2005 at 11:17:03PM +0100, Ingo Oeser wrote:
> David Gibson wrote:
> > Andrew, please apply.
> >
> > Allow userspace programs on ppc64 to use the (privileged) mfpvr
> > instruction to determine the processor type. At the moment it
> > emulates the instruction to provide the real PVR value, though it
> > could be made to lie in future if for some reason we wish to restrict
> > what CPU features userspace uses.
> Why not putting the required information into the AUX table
> when executing your ELF programs? I loved this feature in the
> ix86 arch.

Because this is easy and is the way we already do it on ppc32..?

David Gibson | I'll have my music baroque, and my code
david AT | minimalist. NOT _the_ _other_ _way_
| _around_!
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