Re: [PATCH v2 3/8] perf test ibs: Remove obsolete privilege test
From: Ravi Bangoria
Date: Fri May 08 2026 - 02:14:58 EST
>> Older IBS implementations lacked a hardware privilege filter, so the
>> kernel enabled swfilt=1. Newer AMD CPUs will provide privilege filtering
>> via the RIP[63] bit, making swfilt redundant. Remove the perf unit test
>> that assumes IBS has no hardware-assisted privilege filter.
>
> Can you add a check for CPU model or capability for this?
> Probably we want to keep this test for older models..
Fixed and posted v3:
https://lore.kernel.org/r/20260508060004.2575-1-ravi.bangoria@xxxxxxx
Thanks Namhyung.
Ravi