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pc: migrate piix4 & ich9 MemHotplugState

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Adds an optional subsection that allows to migrate current
state of acpi_memory_hotplug of ACPI PM device.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-02 15:25:23 +02:00 • committed by Michael S. Tsirkin
parent 1f8621842e
commit f816a62daa
4 changed files with 82 additions and 0 deletions
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24
hw/acpi/piix4.c
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@ -248,6 +248,23 @@ static bool vmstate_test_no_use_acpi_pci_hotplug(void *opaque, int version_id)
return !s->use_acpi_pci_hotplug;
}
static bool vmstate_test_use_memhp(void *opaque)
{
PIIX4PMState *s = opaque;
return s->acpi_memory_hotplug.is_enabled;
}
static const VMStateDescription vmstate_memhp_state = {
.name = "piix4_pm/memhp",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState),
VMSTATE_END_OF_LIST()
}
};
/* qemu-kvm 1.2 uses version 3 but advertised as 2
* To support incoming qemu-kvm 1.2 migration, change version_id
* and minimum_version_id to 2 below (which breaks migration from
@ -279,6 +296,13 @@ static const VMStateDescription vmstate_acpi = {
VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
vmstate_test_use_acpi_pci_hotplug),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection[]) {
{
.vmsd = &vmstate_memhp_state,
.needed = vmstate_test_use_memhp,
},
VMSTATE_END_OF_LIST()
}
};