[PATCH] Update ppc32-fix-errata-for-some-g3-cpus.patch

Benjamin Herrenschmidt benh at kernel.crashing.org
Thu Apr 7 09:10:19 EST 2005

On Thu, 2005-04-07 at 01:02 +0200, Andreas Schwab wrote:
> Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:
> > The previous version of ppc32-fix-errata-for-some-g3-cpus.patch had an
> > issue that would crash some G4 CPUs on boot. This is fixed in this new
> > version, please replace the old one and send to linus asap (it's now
> > been tested on enough CPUs).
> Apparently not.  I'm getting "floating point used in kernel" crashes
> during wakeup on my iBook G3 (750FX).

And does removing that patch fixes it ? That is very strange. The patch
works fine here on a G3 Pismo and a couple of G4s, the code in the patch
does enable the FPU before initilizing the registers, so the kernel
shouldn't take any FP exception... Couldn't the above be a different
problem ? What is the exact PC where the exception occurs ? what
instruction does it correspond to ?


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