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i386: Make unversioned CPU models be aliases

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This will make unversioned CPU models behavior depend on the
machine type:

* "pc-*-4.0" and older will not report them as aliases.
  This is done to keep compatibility with older QEMU versions
  after management software starts translating aliases.

* "pc-*-4.1" will translate unversioned CPU models to -v1.
  This is done to keep compatibility with existing management
  software, that still relies on CPU model runnability promises.

* "none" will translate unversioned CPU models to their latest
  version.  This is planned become the default in future machine
  types (probably in pc-*-4.3).

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190628002844.24894-8-ehabkost@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2019-06-27 21:28:42 -03:00
parent 53db89d93b
commit 0788a56bd1
7 changed files with 203 additions and 1 deletions
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3
hw/i386/pc.c
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@ -1645,6 +1645,9 @@ void pc_cpus_init(PCMachineState *pcms)
const CPUArchIdList *possible_cpus;
MachineState *ms = MACHINE(pcms);
MachineClass *mc = MACHINE_GET_CLASS(pcms);
PCMachineClass *pcmc = PC_MACHINE_CLASS(mc);
x86_cpu_set_default_version(pcmc->default_cpu_version);
/* Calculates the limit to CPU APIC ID values
*