Probing for native availability of isel from userspace

[Scott Wood]

On 09/24/2012 07:32:03 PM, Benjamin Herrenschmidt wrote:
> On Mon, 2012-09-24 at 18:55 -0500, Scott Wood wrote:
> > The ISA says that isel is "Category: Phased-In (sV2.06)" -- are  
> there
> > any 2.06 chips that don't have it?
> 
> I believe "malc" is interested in knowing about pre-2.06 chips that  
> have
> it.

You said to key off of 2.06 plus a PVR whitelist for pre-2.06 chips  
that have it.  Wouldn't you also need a PVR blacklist for 2.06 chips  
that don't have it (unless there are no such things)?  Or if one is  
only interested in pre-2.06 chips, why check for 2.06 at all?

-Scott