On Mon, 11 Mar 2024, Christoph Lameter (Ampere) wrote:
This could be an issue in the ARM64 arch code itself where there maybe an
assumption elsewhere that a cpumask can always store up to NR_CPU cpus and
not only nr_cpu_ids as OFFSTACK does.
How can I exercise the opp driver in order to recreate the problem?
I assume the opp driver is ARM specific? x86 defaults to OFFSTACK so if there
is an issue with OFFSTACK in opp then it should fail with kernel default
configuration on that platform.
I checked the ARM64 arch sources use of NR_CPUS and its all fine.
Also verified in my testing logs that CONFIG_PM_OPP was set in all tests.
No warnings in the kernel log during those tests.
How to reproduce this?
