On 4/14/23 19:24, Bagas Sanjaya wrote: > On 4/14/23 10:17, K Prateek Nayak wrote: >> + - cluster_id: >> + >> + A per-CPU variable containing: >> + >> + - Upper bits extracted from the APIC ID. CPUs which have the same value >> + in these bits share an L2 and have the same cluster_id. >> + >> + CPUs for which cluster information is unavailable will show 65535 >> + (BAD_APICID) as the cluster_id. > "... return cluster_id of 65535 (BAD_APICID)." Bagas, this is talking about a per-cpu variable. Variables don't "return" things, functions do. I also have a request: I'd really appreciate if you could avoid reviewing x86-related documentation. The review comments that I've seen coming from you have not helped x86 documentation. They've hurt the patches more than they have helped.