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topology: make core_mask include at least cluster_siblings

Mark Salter requested to merge msalter/centos-stream-9:bz2047951 into main

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2047951

Ampere Altra defines CPU clusters in the ACPI PPTT. They share a Snoop Control Unit, but have no shared CPU-side last level cache. This leads to topology confusion and this message at boot:

BUG: arch topology borken

This patch just landed 5.18-rc7 to correct the problem.

Signed-off-by: Mark Salter msalter@redhat.com

Edited by Mark Salter

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