* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
+#include "qemu/osdep.h"
#include "hw/mem/pc-dimm.h"
#include "qemu/config-file.h"
#include "qapi/visitor.h"
#include "qemu/range.h"
+#include "sysemu/numa.h"
+#include "sysemu/kvm.h"
+#include "trace.h"
+#include "hw/virtio/vhost.h"
+
+typedef struct pc_dimms_capacity {
+ uint64_t size;
+ Error **errp;
+} pc_dimms_capacity;
+
+void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
+ MemoryRegion *mr, uint64_t align, Error **errp)
+{
+ int slot;
+ MachineState *machine = MACHINE(qdev_get_machine());
+ PCDIMMDevice *dimm = PC_DIMM(dev);
+ Error *local_err = NULL;
+ uint64_t existing_dimms_capacity = 0;
+ uint64_t addr;
+
+ addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err);
+ if (local_err) {
+ goto out;
+ }
+
+ addr = pc_dimm_get_free_addr(hpms->base,
+ memory_region_size(&hpms->mr),
+ !addr ? NULL : &addr, align,
+ memory_region_size(mr), &local_err);
+ if (local_err) {
+ goto out;
+ }
+
+ existing_dimms_capacity = pc_existing_dimms_capacity(&local_err);
+ if (local_err) {
+ goto out;
+ }
+
+ if (existing_dimms_capacity + memory_region_size(mr) >
+ machine->maxram_size - machine->ram_size) {
+ error_setg(&local_err, "not enough space, currently 0x%" PRIx64
+ " in use of total hot pluggable 0x" RAM_ADDR_FMT,
+ existing_dimms_capacity,
+ machine->maxram_size - machine->ram_size);
+ goto out;
+ }
+
+ object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ trace_mhp_pc_dimm_assigned_address(addr);
+
+ slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &local_err);
+ if (local_err) {
+ goto out;
+ }
+
+ slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot,
+ machine->ram_slots, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ trace_mhp_pc_dimm_assigned_slot(slot);
+
+ if (kvm_enabled() && !kvm_has_free_slot(machine)) {
+ error_setg(&local_err, "hypervisor has no free memory slots left");
+ goto out;
+ }
+
+ if (!vhost_has_free_slot()) {
+ error_setg(&local_err, "a used vhost backend has no free"
+ " memory slots left");
+ goto out;
+ }
+
+ memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr);
+ vmstate_register_ram(mr, dev);
+ numa_set_mem_node_id(addr, memory_region_size(mr), dimm->node);
+
+out:
+ error_propagate(errp, local_err);
+}
+
+void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
+ MemoryRegion *mr)
+{
+ PCDIMMDevice *dimm = PC_DIMM(dev);
+
+ numa_unset_mem_node_id(dimm->addr, memory_region_size(mr), dimm->node);
+ memory_region_del_subregion(&hpms->mr, mr);
+ vmstate_unregister_ram(mr, dev);
+}
+
+static int pc_existing_dimms_capacity_internal(Object *obj, void *opaque)
+{
+ pc_dimms_capacity *cap = opaque;
+ uint64_t *size = &cap->size;
+
+ if (object_dynamic_cast(obj, TYPE_PC_DIMM)) {
+ DeviceState *dev = DEVICE(obj);
+
+ if (dev->realized) {
+ (*size) += object_property_get_int(obj, PC_DIMM_SIZE_PROP,
+ cap->errp);
+ }
+
+ if (cap->errp && *cap->errp) {
+ return 1;
+ }
+ }
+ object_child_foreach(obj, pc_existing_dimms_capacity_internal, opaque);
+ return 0;
+}
+
+uint64_t pc_existing_dimms_capacity(Error **errp)
+{
+ pc_dimms_capacity cap;
+
+ cap.size = 0;
+ cap.errp = errp;
+
+ pc_existing_dimms_capacity_internal(qdev_get_machine(), &cap);
+ return cap.size;
+}
int qmp_pc_dimm_device_list(Object *obj, void *opaque)
{
NULL);
di->memdev = object_get_canonical_path(OBJECT(dimm->hostmem));
- info->dimm = di;
+ info->u.dimm = di;
elem->value = info;
elem->next = NULL;
**prev = elem;
return 0;
}
+ram_addr_t get_current_ram_size(void)
+{
+ MemoryDeviceInfoList *info_list = NULL;
+ MemoryDeviceInfoList **prev = &info_list;
+ MemoryDeviceInfoList *info;
+ ram_addr_t size = ram_size;
+
+ qmp_pc_dimm_device_list(qdev_get_machine(), &prev);
+ for (info = info_list; info; info = info->next) {
+ MemoryDeviceInfo *value = info->value;
+
+ if (value) {
+ switch (value->type) {
+ case MEMORY_DEVICE_INFO_KIND_DIMM:
+ size += value->u.dimm->size;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ qapi_free_MemoryDeviceInfoList(info_list);
+
+ return size;
+}
+
static int pc_dimm_slot2bitmap(Object *obj, void *opaque)
{
unsigned long *bitmap = opaque;
uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
uint64_t address_space_size,
- uint64_t *hint, uint64_t size,
+ uint64_t *hint, uint64_t align, uint64_t size,
Error **errp)
{
GSList *list = NULL, *item;
uint64_t new_addr, ret = 0;
uint64_t address_space_end = address_space_start + address_space_size;
+ g_assert(QEMU_ALIGN_UP(address_space_start, align) == address_space_start);
+
if (!address_space_size) {
error_setg(errp, "memory hotplug is not enabled, "
"please add maxmem option");
goto out;
}
+ if (hint && QEMU_ALIGN_UP(*hint, align) != *hint) {
+ error_setg(errp, "address must be aligned to 0x%" PRIx64 " bytes",
+ align);
+ goto out;
+ }
+
+ if (QEMU_ALIGN_UP(size, align) != size) {
+ error_setg(errp, "backend memory size must be multiple of 0x%"
+ PRIx64, align);
+ goto out;
+ }
+
assert(address_space_end > address_space_start);
object_child_foreach(qdev_get_machine(), pc_dimm_built_list, &list);
error_setg(errp, "address range conflicts with '%s'", d->id);
goto out;
}
- new_addr = dimm->addr + dimm_size;
+ new_addr = QEMU_ALIGN_UP(dimm->addr + dimm_size, align);
}
}
ret = new_addr;
DEFINE_PROP_END_OF_LIST(),
};
-static void pc_dimm_get_size(Object *obj, Visitor *v, void *opaque,
- const char *name, Error **errp)
+static void pc_dimm_get_size(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
{
int64_t value;
MemoryRegion *mr;
mr = host_memory_backend_get_memory(dimm->hostmem, errp);
value = memory_region_size(mr);
- visit_type_int(v, &value, name, errp);
+ visit_type_int(v, name, &value, errp);
}
static void pc_dimm_check_memdev_is_busy(Object *obj, const char *name,
error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
return;
}
- if (dimm->node >= nb_numa_nodes) {
+ if (((nb_numa_nodes > 0) && (dimm->node >= nb_numa_nodes)) ||
+ (!nb_numa_nodes && dimm->node)) {
error_setg(errp, "'DIMM property " PC_DIMM_NODE_PROP " has value %"
PRIu32 "' which exceeds the number of numa nodes: %d",
- dimm->node, nb_numa_nodes);
+ dimm->node, nb_numa_nodes ? nb_numa_nodes : 1);
return;
}
}
dc->realize = pc_dimm_realize;
dc->props = pc_dimm_properties;
+ dc->desc = "DIMM memory module";
ddc->get_memory_region = pc_dimm_get_memory_region;
}
projects / qemu.git / blobdiff