76bdd24ec0
In legacy cpu-hotplug ProcessorID == APIC ID is used in MADT and cpu-hotplug AML. It was fine as both are 8bit and unique. Spec depricated Processor() with corresponding ProcessorID and advises to use Device() and UID instead of it. However UID is just 32bit and it can't fit ARM's arch_id(MPIDR) which is 64bit. Also in case of sparse arch_id() distribution, managment/lookup of maps by arch_id(APIC ID/MPIDR) becomes complex and expensive. In preparation to common CPU hotplug with ARM and to simplify lookup in possible_cpus[] map switch ProcessorID to possible_cpus index in MADT. Legacy cpu-hotplug considerations: HW interface of it is APIC ID based bitmask so it's impossible to change, also CPON package in AML also APIC ID based as well all the methods. To avoid massive rewrite of AML keep is so and just break assumption that ProcessorID == APIC ID, ammending CPU_MAT_METHOD to accept APIC ID and possible_cpus index, it needs them both to patch MADT entry template. Also switch to possible_cpus index Processor(ProcessorID) AML. That way changes to MADT/AML are minimal and kept inside AML/MADT not affecting external interfaces. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|---|---|---|
| .. | ||
| kvm | ||
| xen | ||
| acpi-build.c | ||
| acpi-build.h | ||
| intel_iommu.c | ||
| intel_iommu_internal.h | ||
| kvmvapic.c | ||
| Makefile.objs | ||
| multiboot.c | ||
| multiboot.h | ||
| pc.c | ||
| pc_piix.c | ||
| pc_q35.c | ||
| pc_sysfw.c | ||
| pci-assign-load-rom.c | ||