Subject: Re: [PATCH (skiboot)] dt: add /cpus/ibm, powerpc-cpu-features device tree bindings

From: Segher Boessenkool <[email-masked]>
Date: Mon, 5 Feb 2018 08:41:18 -0600

On Mon, Feb 05, 2018 at 11:26:15AM +1000, Nicholas Piggin wrote:
> On Sat, 3 Feb 2018 09:36:20 -0600
> > On Sat, Feb 03, 2018 at 02:27:32PM +1000, Nicholas Piggin wrote:
> > > +	/*
> > > +	 * ISAv3.0B branch instruction and register additions
> > > +	 * CA32, OV32, mcrxrx, setb
> > > +	 */
> > > +	{ "branch-v3",  
> > 
> > Those aren't branch instructions, they are integer instructions.  Some
> > of which use the XER, some of which use CR fields.
> 
> Okay, well the register changes are for branch facility registers, I
> guess instructions could move to integer. We have nothing relying on
> exact definition of these things at the moment, so these we can change.

XER is a fixed-point facility register (that's what the "X" means even!)

Thanks,

Segher