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hw/arm/virt: Add nvdimm hotplug support

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This adds support for nvdimm hotplug events through GED
and enables nvdimm for the arm/virt. Now Guests with ACPI
can have both cold and hot plug of nvdimms.

Hot removal functionality is not yet supported.

Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20200421125934.14952-5-shameerali.kolothum.thodi@huawei.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Shameer Kolothum 2020-04-21 13:59:31 +01:00 • committed by Michael S. Tsirkin
parent b5a60bee74
commit c2505d1c56
4 changed files with 28 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

16
hw/arm/virt.c
View file

@ -568,6 +568,10 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
event |= ACPI_GED_MEM_HOTPLUG_EVT;
}
if (ms->nvdimms_state->is_enabled) {
event |= ACPI_GED_NVDIMM_HOTPLUG_EVT;
}
dev = qdev_create(NULL, TYPE_ACPI_GED);
qdev_prop_set_uint32(dev, "ged-event", event);
@ -2088,19 +2092,20 @@ static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
const MachineState *ms = MACHINE(hotplug_dev);
const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
if (is_nvdimm) {
error_setg(errp, "nvdimm is not yet supported");
return;
}
if (!vms->acpi_dev) {
error_setg(errp,
"memory hotplug is not enabled: missing acpi-ged device");
return;
}
if (is_nvdimm && !ms->nvdimms_state->is_enabled) {
error_setg(errp, "nvdimm is not enabled: add 'nvdimm=on' to '-M'");
return;
}
pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp);
}
@ -2245,6 +2250,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
hc->plug = virt_machine_device_plug_cb;
hc->unplug_request = virt_machine_device_unplug_request_cb;
mc->numa_mem_supported = true;
mc->nvdimm_supported = true;
mc->auto_enable_numa_with_memhp = true;
mc->default_ram_id = "mach-virt.ram";