On 11/20/23 13:42, Wu, Jiaxin wrote:
> For core id in cpu features library, I agree it should be not easy or
> simple change to 0x1f.
> 
>  
> 
> But in SMM CPU, there is no usage case depends on the number of cores
> retrieved from cupid 0x0b return value, only PackageId will be used. So,
> this patch doesn’t do bad things, should no regression issue. I agree
> with Ray’s explanation that  “CPUID.0B.PackageId == CPUID.1F.PackageId”,
> thus no need update for the PackageId update.
> 
>  
> 
> I checked the latest SDM:
> 
>  
> 
> “The sub-leaves of CPUID leaf 0BH describe an ordered hierarchy of
> logical processors starting from the smallest-scoped domain of a Logical
> Processor (sub-leaf index 0) to the Core domain (sub-leaf index 1) to
> the largest-scoped domain (the last valid sub-leaf index) **that is
> implicitly subordinate to the unenumerated highest-scoped domain of the
> processor package (socket)**”
> 
>  
> 
> Looks it already updated to indicate the largest-scoped domain is package.
> 
>  
> 
> With all above, I agree to drop this path, but other 2 patches in this
> set should be ok. Thanks Ray help clarify this.

Merged the first two patches in the series as commits
ad0b1cc144b56fcbd8d369eaff6eaf5f3020efe7 and
7eb504060787c9c37d5b3c33f5d65021d553ea3f, via
<https://github.com/tianocore/edk2/pull/5125>.

Laszlo



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