The current SSDT generator doesn't support hotplug of the VCPU with APIC ID 0xFF; supply that functionality.
The series depends on Eduardo's [Qemu-devel] [PATCH v4 0/7] pc: Ensure APIC ID limits before aborting or corrupting memory Regression tested with 4 VCPUs. Iasl disassembly of the SSDT remains identical (modulo length / checksum). Laszlo Ersek (2): i386/acpi-build: allow more than 255 elements in CPON i386/acpi-build: support hotplug of VCPU with APIC ID 0xFF hw/i386/acpi-build.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) -- 1.8.3.1