On Sun, 2016-03-27 at 13:54 +0530, Aneesh Kumar K.V wrote: > This patch move the existing p9 hash to a different PVR and add > radix feature with p9 PVR. That implies we will not be able to > runtime select P9 hash. With P9 Radix we need to do > > * set UPRT = 0 in cpu setup > * set different TLB set count > > We ideally want to use ibm,pa-features to enable disable radix. But > we have already done setup cpu by the time we reach pa-features check. > > So for now use this hack. > > Not-Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com> ... > diff --git a/arch/powerpc/kernel/cpu_setup_power.S > b/arch/powerpc/kernel/cpu_setup_power.S > index 584e119fa8b0..e9b76c651bd1 100644 > --- a/arch/powerpc/kernel/cpu_setup_power.S > +++ b/arch/powerpc/kernel/cpu_setup_power.S > @@ -117,6 +117,41 @@ _GLOBAL(__restore_cpu_power9) > mtlr r11 > blr > > +_GLOBAL(__setup_cpu_power9_uprt) > + mflr r11 > + bl __init_FSCR > + bl __init_hvmode_206 > + mtlr r11 > + beqlr > + li r0,0 > + mtspr SPRN_LPID,r0 > + mfspr r3,SPRN_LPCR > + ori r3, r3, LPCR_PECEDH > + oris r3,r3,(LPCR_UPRT >> 16) > + bl __init_LPCR
I don't see why we *have* to initialise this here. ie. could we do it later in early_init_mmu() or similar ? cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
