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[Xen-devel] [PATCH][RFC][2/2] x86 SMP: enables core-pair topology detection for AMD CPUs

x86: AMD core-pair topology detection code

This patch is to support core-pair topology introduced by AMD CPUs, which introduces a new concept of [core, compute unit]. There is a new feature bit for topology extension in CPUID:0x80000001. Also a new CPUID 0x8000001E is introduced for CPU topology enumeration. This patch collects the sibling information from the new CPUID and will be stored in the sibling map in Xen hypervisor.

Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>

Attachment: core_pair_2.txt
Description: core_pair_2.txt

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