Sorry for the confusion. You are correct. The referenced patches fix a crash that is caused when nosmt is enabled, not the security issue itself.
Yes, the request is to enable CONFIG_HOTPLUG_CPU until you can pull in the above patches that fix the boot crash when "nosmt" is used with CONFIG_HOTPLUG_CPU=n. Once those patches are pulled in, disable CONFIG_HOTPLUG_CPU once again, but we can open a new bug for that if you want.
Sorry for the confusion. You are correct. The referenced patches fix a crash that is caused when nosmt is enabled, not the security issue itself.
Yes, the request is to enable CONFIG_HOTPLUG_CPU until you can pull in the above patches that fix the boot crash when "nosmt" is used with CONFIG_ HOTPLUG_ CPU=n. Once those patches are pulled in, disable CONFIG_HOTPLUG_CPU once again, but we can open a new bug for that if you want.