[PATCH 4.17 50/97] Revert "x86/apic: Ignore secondary threads if nosmt=force"

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Thomas Gleixner commit 506a66f374891ff08e064a058c446b336c5ac760 upstream Dave Hansen reported, that it's outright dangerous to keep SMT siblings disabled completely so they are stuck in the

[PATCH 4.17 50/97] Revert "x86/apic: Ignore secondary threads if nosmt=force"

4.17-stable review patch. If anyone has any objections, please let me know. -- From: Thomas Gleixner commit 506a66f374891ff08e064a058c446b336c5ac760 upstream Dave Hansen reported, that it's outright dangerous to keep SMT siblings disabled completely so they are stuck in the