Merge tag 'x86-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fix a CPU topology code regression that caused the mishandling of
  certain boot command line options, and re-enable CONFIG_PTDUMP on i386
  that was mistakenly turned off in the Kconfig"

* tag 'x86-urgent-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/topology: Implement topology_is_core_online() to address SMT regression
  x86/Kconfig: Reenable PTDUMP on i386