Re: [PATCH V4 0/5] arm_scmi: vendors: Qualcomm Generic Vendor Extensions

From: Johan Hovold
Date: Thu Dec 05 2024 - 10:53:10 EST


On Thu, Dec 05, 2024 at 04:26:55PM +0530, Sibi Sankar wrote:
> On 11/22/24 14:07, Johan Hovold wrote:

> > I have a Lenovo ThinkPad T14s set up now so I gave this series a spin
> > there too, and there I do *not* see the above mentioned -EOPNOSUPP error
> > and the memlat driver probes successfully.
> >
> > On the other hand, this series seems to have no effect on a kernel
> > compilation benchmark. Is that expected?
>
> I can have a look at your tree. But memlat in general
> depends on the cpu frequency when your benchmarks max
> the cpu's the ddr/llcc are scaled accordingly by it.

A kernel compilation should max out the CPU frequency on all cores.

> > And does this mean that you should stick with the uppercase "MEMLAT"
> > string after all? The firmware on my CRD is not the latest one, but I am
> > using the latest available firmware for the T14s.
>
> We should stick with "memlat" if we run into a device in the
> wild that doesn't support "MEMLAT"

Ok. So the updated firmware supports both strings?

Johan