haraldwolff/qemu-patch-raspberry4
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hw/arm/virt: explicitly allocate cpu_index for cpus

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Currently cpu_index is implicitly auto assigned during
cpu.realize() time cpu_exec_realizefn()->cpu_list_add().

It happens to match index in possible_cpus so take
control over it and make board initialize cpu_index
to possible_cpus index explicitly. It will at least
document that board is in control of it and when
'-device cpu' support comes it will keep cpu_index
stable regardless of order cpus are created so it won't
break migration.
Within this series it will be used for internal
conversion from storing cpu_index based NUMA node
bitmaps to property based mapping with possible_cpus,
And will allow map cpu_index to a CPU entry in
possible_cpus array.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-Id: <1493816238-33120-5-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2017-05-03 14:56:58 +02:00 committed by Eduardo Habkost
parent 17d3d0e2d9
commit d9c34f9c6c
1 changed files with 4 additions and 0 deletions
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4
hw/arm/virt.c
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@ -1349,6 +1349,7 @@ static void machvirt_init(MachineState *machine)
possible_cpus = mc->possible_cpu_arch_ids(machine);
for (n = 0; n < possible_cpus->len; n++) {
Object *cpuobj;
CPUState *cs;
if (n >= smp_cpus) {
break;
@ -1358,6 +1359,9 @@ static void machvirt_init(MachineState *machine)
object_property_set_int(cpuobj, possible_cpus->cpus[n].arch_id,
"mp-affinity", NULL);
cs = CPU(cpuobj);
cs->cpu_index = n;
if (!vms->secure) {
object_property_set_bool(cpuobj, false, "has_el3", NULL);
}