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hw/acpi: Update GED with vCPU Hotplug VMSD for migration

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The ACPI CPU hotplug states must be migrated along with other vCPU
hotplug states to the destination VM. Update the GED's VM State
Description (VMSD) table subsection to conditionally include the CPU
Hotplug VM State Description (VMSD).

Excerpt of GED VMSD State Dump at Source:

    "acpi-ged (16)": {
        "ged_state": {
            "sel": "0x00000000"
        },
        [...]
        "acpi-ged/cpuhp": {
            "cpuhp_state": {
                "selector": "0x00000005",
                "command": "0x00",
                "devs": [
                    {
                        "is_inserting": false,
                        "is_removing": false,
                        "ost_event": "0x00000000",
                        "ost_status": "0x00000000"
                    },
		    [...]
                    {
                        "is_inserting": false,
                        "is_removing": false,
                        "ost_event": "0x00000000",
                        "ost_status": "0x00000000"
                    }
                ]
            }
        }
    },

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Message-Id: <20241103102419.202225-6-salil.mehta@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Salil Mehta 2024-11-03 10:24:19 +00:00 • committed by Michael S. Tsirkin
parent 4d62d15b11
commit 65fb66980d
1 changed files with 19 additions and 0 deletions
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19
hw/acpi/generic_event_device.c
View file

@ -331,6 +331,24 @@ static const VMStateDescription vmstate_memhp_state = {
}
};
static bool cpuhp_needed(void *opaque)
{
MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
return mc->has_hotpluggable_cpus;
}
static const VMStateDescription vmstate_cpuhp_state = {
.name = "acpi-ged/cpuhp",
.version_id = 1,
.minimum_version_id = 1,
.needed = cpuhp_needed,
.fields = (VMStateField[]) {
VMSTATE_CPU_HOTPLUG(cpuhp_state, AcpiGedState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_ged_state = {
.name = "acpi-ged-state",
.version_id = 1,
@ -379,6 +397,7 @@ static const VMStateDescription vmstate_acpi_ged = {
},
.subsections = (const VMStateDescription * const []) {
&vmstate_memhp_state,
&vmstate_cpuhp_state,
&vmstate_ghes_state,
NULL
}