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From: | Zhao Liu |
Subject: | Re: [PATCH v6] i386/cpu: fixup number of addressable IDs for logical processors in the physical package |
Date: | Sat, 12 Oct 2024 17:28:34 +0800 |
> This also is consistency with the SDM, where the comment for bit 23-16 of > CPUID.1:EBX is: > > The nearest power-of-2 integer that is not smaller than EBX[23:16] is > the number of unique initial APIC IDs reserved for addressing > different logical processors in a physical package. > > What I read from this is, the nearest power-of-2 integer that is not smaller > than EBX[23:16] is a different thing than EBX[23:16]. i.e., “not smaller” means “greater than or equal to” (≥).
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