Re: kernel selection: powerpc, power4 or power3?
On Wed, 2004-06-30 at 15:48, Albert Cahalan wrote:
> On Wed, 2004-06-30 at 07:27, Colin Watson wrote:
>
> > No, -power3 is for POWER3 processors, used in older IBM RS/6000 systems.
> > Similarly, -power4 is for POWER4 processors, used in iSeries, pSeries,
> > and G5 systems. You want -powerpc. They aren't compatible in the way
> > that -386, -686, etc. are.
>
> The POWER3 instructions missing from PowerPC can be emulated.
> You can go the other way too. This should allow for a truly
> generic kernel, optimized for whichever processor you prefer.
Well, the MMU is different, it's a 64 bits chip, so it uses a special
bridge mode to run a 32 bits kernel, we don't quite deal dynamically
with the various types of MMUs in the low level code on ppc32.
Ben.
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