"leaf" means the core inside the "package"....ie, CPU cores are organized in a certain hierarchy....and multiple packages may exists...each package may have multiple cores inside - these are the leaf, which is the lowest level where CPU core resides. To enumerate these hierarchies/topologies....u used cpuid instruction as mentioned.
On Tue, Aug 17, 2010 at 4:46 PM, Punit Kumar Jain <punitkr.jain@xxxxxxxxx> wrote:
Hi all,I was going through the following function __cpuinit detect_extended_topology where there is a talk about detecting the cpu topology.I have read documentation intel IA32 sys programming guide about CPUID instruction. But i am having some doubts regarding what exactly is a "enumeration leaf".Does leaf mean a supported function for CPUID or is it something else. I am not able to correctly understand why we use a "leaf" terminology.This maybe a trivial question but my google searches have done me no good.
thanks,Punit.
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Regards,
Peter Teoh
