diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ppc/spapr.c | 24 | ||||
| -rw-r--r-- | hw/ppc/spapr_events.c | 3 | ||||
| -rw-r--r-- | hw/ppc/spapr_ovec.c | 7 |
3 files changed, 21 insertions, 13 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 2c403b574e..6c47466fc2 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4048,6 +4048,18 @@ static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, } } +bool spapr_memory_hot_unplug_supported(SpaprMachineState *spapr) +{ + return spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT) || + /* + * CAS will process all pending unplug requests. + * + * HACK: a guest could theoretically have cleared all bits in OV5, + * but none of the guests we care for do. + */ + spapr_ovec_empty(spapr->ov5_cas); +} + static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -4056,16 +4068,9 @@ static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { - if (!smc->pre_6_0_memory_unplug || - spapr_ovec_test(sms->ov5_cas, OV5_HP_EVT)) { + if (spapr_memory_hot_unplug_supported(sms)) { spapr_memory_unplug_request(hotplug_dev, dev, errp); } else { - /* NOTE: this means there is a window after guest reset, prior to - * CAS negotiation, where unplug requests will fail due to the - * capability not being detected yet. This is a bit different than - * the case with PCI unplug, where the events will be queued and - * eventually handled by the guest after boot - */ error_setg(errp, "Memory hot unplug not supported for this guest"); } } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { @@ -4543,11 +4548,8 @@ DEFINE_SPAPR_MACHINE(6_0, "6.0", true); */ static void spapr_machine_5_2_class_options(MachineClass *mc) { - SpaprMachineClass *smc = SPAPR_MACHINE_CLASS(mc); - spapr_machine_6_0_class_options(mc); compat_props_add(mc->compat_props, hw_compat_5_2, hw_compat_5_2_len); - smc->pre_6_0_memory_unplug = true; } DEFINE_SPAPR_MACHINE(5_2, "5.2", false); diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 6aedd988b3..d51daedfa6 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -658,8 +658,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, /* we should not be using count_indexed value unless the guest * supports dedicated hotplug event source */ - g_assert(!SPAPR_MACHINE_GET_CLASS(spapr)->pre_6_0_memory_unplug || - spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); + g_assert(spapr_memory_hot_unplug_supported(spapr)); hp->drc_id.count_indexed.count = cpu_to_be32(drc_id->count_indexed.count); hp->drc_id.count_indexed.index = diff --git a/hw/ppc/spapr_ovec.c b/hw/ppc/spapr_ovec.c index dd003f1763..b2567caa5c 100644 --- a/hw/ppc/spapr_ovec.c +++ b/hw/ppc/spapr_ovec.c @@ -125,6 +125,13 @@ bool spapr_ovec_test(SpaprOptionVector *ov, long bitnr) return test_bit(bitnr, ov->bitmap) ? true : false; } +bool spapr_ovec_empty(SpaprOptionVector *ov) +{ + g_assert(ov); + + return bitmap_empty(ov->bitmap, OV_MAXBITS); +} + static void guest_byte_to_bitmap(uint8_t entry, unsigned long *bitmap, long bitmap_offset) { |