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 <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
