Re: [PATCH 2/2] lscpu-arm: Remove the "Ampere-1a" part.

On Mon, Jul 14, 2025 at 03:48:50PM -0500, Jeremy Linton wrote:
> On 7/14/25 7:16 AM, Karel Zak wrote:
> > On Fri, Jul 11, 2025 at 02:16:48PM -0700, Paul Benoit wrote:
> > > Remove the "Ampere-1a" part.  On newer Ampere Computing systems, the
> > > system/model name will be obtained from /sys/bus/soc/devices/soc0/machine,
> > > that is populated with the ARM SMC CC SOC_ID Name.
> > 
> > If I understand correctly, there are old systems without
> > /sys/.../soc0/machine, right? The change will remove Ampere-1a from
> > the lscpu output. This sounds backward incompatible.
> 
> Thats a good point, but as I understand it, Ampere hasn't been happy with
> the string that is there.

We can update the string to make them happy.

> If its OK to break whatever scripts/etc might depend on it at the moment,
> why not just update the string.
> 
> Then invert the check so that the /sys/bus entry is preferred?

I still do not understand how a per-CPU identifier can be replaced by  
one soc0 path. What if there is soc1, soc2, etc.?

Anyway, using /sys/bus as the primary source and the hardcoded id_part[]  
array as a fallback seems better than removing anything from id_part[]  
and relying on /sys/bus only.

    Karel

-- 
 Karel Zak  <[email protected]>
 http://karelzak.blogspot.com