On Tue, Nov 21, 2023 at 02:15:59AM +0000, Huang, Kai wrote: > On Wed, 2023-11-15 at 15:00 +0300, Kirill A. Shutemov wrote: > > The ACPI MADT mailbox wakeup method doesn't allow to offline CPU after > > it got woke up. > > > > Currently offlining hotplug is prevented based on the confidential > > computing attribute which is set for Intel TDX. But TDX is not > > the only possible user of the wake up method. The MADT wakeup can be > > implemented outside of a confidential computing environment. Offline > > support is a property of the wakeup method, not the CoCo implementation. > > > > Introduce cpu_hotplug_not_supported() that can be called to indicate > > that CPU offlining should be disabled. > > cpu_hotplug_not_supported() -> cpu_hotplug_disable_offlining(). Right. > > > > This function is going to replace CC_ATTR_HOTPLUG_DISABLED for ACPI > > MADT. > > Is MADT too generic? MADT wakeup? I'll replace it with "ACPI MADT wakeup method". -- Kiryl Shutsemau / Kirill A. Shutemov _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
