diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2016-07-01 17:53:56 +0200 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2016-07-20 12:02:19 -0300 |
| commit | f6e984443f1634eee8d6876a7cce039b976c95e0 (patch) | |
| tree | d989b870f5642a31f20b623808998b4ab089f36b /include/hw/i386/pc.h | |
| parent | 9c156f9de52b75510d3951dfede2cf96773b6626 (diff) | |
apic: Use apic_id as apic's migration instance_id
instance_id is generated by last_used_id + 1 for a given device type
so for QEMU with 3 CPUs instance_id for APICs is a seti of [0, 1, 2]
When CPU in the middle is hot-removed and migration started
APICs with instance_ids 0 and 2 are transferred in migration stream.
However target starts with 2 CPUs and APICs' instance_ids are
generated from scratch [0, 1] hence migration fails with error
Unknown savevm section or instance 'apic' 2
Fix issue by manually registering APIC's vmsd with apic_id as
instance_id, in this case instance_id on target will always
match instance_id on source as apic_id is the same for a given
cpu instance.
Reported-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'include/hw/i386/pc.h')
| -rw-r--r-- | include/hw/i386/pc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 47411cbde4..bc937b989e 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -382,6 +382,11 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); .driver = TYPE_X86_CPU,\ .property = "fill-mtrr-mask",\ .value = "off",\ + },\ + {\ + .driver = "apic",\ + .property = "legacy-instance-id",\ + .value = "on",\ }, #define PC_COMPAT_2_5 \ |