On Thu, 2017-04-13 at 09:28 +0530, Aneesh Kumar K.V wrote: > > #endif > > mtctr r12 > > bctrl > > +/* > > + * cur_cpu_spec->cpu_restore would restore LPCR to a > > + * sane value that is set at early boot time, > > + * thereby clearing LPCR_UPRT. > > + * LPCR_UPRT is required if we are running in Radix mode. > > + * Set it here if that be the case. > > + */ > > +BEGIN_MMU_FTR_SECTION > > + mfspr r3, SPRN_LPCR > > + LOAD_REG_IMMEDIATE(r4, LPCR_UPRT) > > + or r3, r3, r4 > > + mtspr SPRN_LPCR, r3 > > +END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX)
We are probably better off saving the value somewhere during boot and just "blasting" it whole back. Cheers Ben.
