[PATCH 00/14] powerpc: Add support for POWER8 relocation on exceptions

Michael Neuling michael.neuling at au1.ibm.com
Fri Nov 9 20:51:07 EST 2012

> > This set of patches adds support for taking exceptions with the MMU on which is
> > supported by POWER8.
> > 
> > A new set of exception vectors is added at 0xc000_0000_0000_4xxx.  When the HW
> > takes us here, MSR IR/DR will be set already and we no longer need a costly
> > RFID to turn the MMU back on again.
> > 
> > The original 0x0 based exception vectors remain for when the HW can't leave the
> > MMU on.  Examples of this are when we can't trust the current the MMU mappings,
>                                                                 ^^^
> Extra "the" (here and in a couple of patches). 

Thanks, I'll fix.

> Can't do much more since I don't have any hardware past G5, but the
> series looks nice and avoiding transient excursions to real mode is a
> good thing.



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