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| author | Greg Kurz | 2020-12-01 12:37:27 +0100 |
|---|---|---|
| committer | David Gibson | 2020-12-14 05:54:12 +0100 |
| commit | f9b43958b99ea0cc65d0857e073bda381372242c (patch) | |
| tree | 8d5d1ef6e2038670421edcca93dc4e7d01cc609c /hw/ppc/spapr.c | |
| parent | spapr: Abort if ppc_set_compat() fails for hot-plugged CPUs (diff) | |
| download | qemu-f9b43958b99ea0cc65d0857e073bda381372242c.tar.gz qemu-f9b43958b99ea0cc65d0857e073bda381372242c.tar.xz qemu-f9b43958b99ea0cc65d0857e073bda381372242c.zip | |
spapr: Simplify error path of spapr_core_plug()
spapr_core_pre_plug() already guarantees that the slot for the given core
ID is available. It is thus safe to assume that spapr_find_cpu_slot()
returns a slot during plug. Turn the error path into an assertion.
It is also safe to assume that no device is attached to the corresponding
DRC and that spapr_drc_attach() shouldn't fail.
Pass &error_abort to spapr_drc_attach() and simplify error handling.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20201201113728.885700-4-groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/spapr.c')
| -rw-r--r-- | hw/ppc/spapr.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 99139a692c..1f8bd53cb8 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3738,8 +3738,7 @@ int spapr_core_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, return 0; } -static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, - Error **errp) +static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev) { SpaprMachineState *spapr = SPAPR_MACHINE(OBJECT(hotplug_dev)); MachineClass *mc = MACHINE_GET_CLASS(spapr); @@ -3754,20 +3753,20 @@ static void spapr_core_plug(HotplugHandler *hotplug_dev, DeviceState *dev, int i; core_slot = spapr_find_cpu_slot(MACHINE(hotplug_dev), cc->core_id, &index); - if (!core_slot) { - error_setg(errp, "Unable to find CPU core with core-id: %d", - cc->core_id); - return; - } + g_assert(core_slot); /* Already checked in spapr_core_pre_plug() */ + drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, spapr_vcpu_id(spapr, cc->core_id)); g_assert(drc || !mc->has_hotpluggable_cpus); if (drc) { - if (!spapr_drc_attach(drc, dev, errp)) { - return; - } + /* + * spapr_core_pre_plug() already buys us this is a brand new + * core being plugged into a free slot. Nothing should already + * be attached to the corresponding DRC. + */ + spapr_drc_attach(drc, dev, &error_abort); if (hotplugged) { /* @@ -4009,7 +4008,7 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { spapr_memory_plug(hotplug_dev, dev); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { - spapr_core_plug(hotplug_dev, dev, errp); + spapr_core_plug(hotplug_dev, dev); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_PCI_HOST_BRIDGE)) { spapr_phb_plug(hotplug_dev, dev); } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_TPM_PROXY)) { |