@@ -112,5 +112,6 @@ void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
int nb_nodes, ram_addr_t size);
void numa_cpu_pre_plug(const struct CPUArchId *slot, DeviceState *dev,
Error **errp);
+bool numa_uses_legacy_mem(void);
#endif
@@ -52,6 +52,11 @@ QemuOptsList qemu_numa_opts = {
};
static int have_memdevs;
+bool numa_uses_legacy_mem(void)
+{
+ return !have_memdevs;
+}
+
static int have_mem;
static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
* For all nodes, nodeid < max_numa_nodeid
@@ -652,6 +657,23 @@ void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
nodes[i].node_mem = size - usedmem;
}
+static void numa_init_memdev_container(MachineState *ms, MemoryRegion *ram)
+{
+ int i;
+ uint64_t addr = 0;
+
+ for (i = 0; i < ms->numa_state->num_nodes; i++) {
+ uint64_t size = ms->numa_state->nodes[i].node_mem;
+ HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
+ if (!backend) {
+ continue;
+ }
+ MemoryRegion *seg = machine_consume_memdev(ms, backend);
+ memory_region_add_subregion(ram, addr, seg);
+ addr += size;
+ }
+}
+
void numa_complete_configuration(MachineState *ms)
{
int i;
@@ -734,6 +756,12 @@ void numa_complete_configuration(MachineState *ms)
exit(1);
}
+ if (!numa_uses_legacy_mem() && mc->default_ram_id) {
+ ms->ram = g_new(MemoryRegion, 1);
+ memory_region_init(ms->ram, OBJECT(ms), mc->default_ram_id,
+ ram_size);
+ numa_init_memdev_container(ms, ms->ram);
+ }
/* QEMU needs at least all unique node pair distances to build
* the whole NUMA distance table. QEMU treats the distance table
* as symmetric by default, i.e. distance A->B == distance B->A.
@@ -800,27 +828,16 @@ void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
const char *name,
uint64_t ram_size)
{
- uint64_t addr = 0;
- int i;
MachineState *ms = MACHINE(qdev_get_machine());
if (ms->numa_state == NULL ||
- ms->numa_state->num_nodes == 0 || !have_memdevs) {
+ ms->numa_state->num_nodes == 0 || numa_uses_legacy_mem()) {
allocate_system_memory_nonnuma(mr, owner, name, ram_size);
return;
}
memory_region_init(mr, owner, name, ram_size);
- for (i = 0; i < ms->numa_state->num_nodes; i++) {
- uint64_t size = ms->numa_state->nodes[i].node_mem;
- HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
- if (!backend) {
- continue;
- }
- MemoryRegion *seg = machine_consume_memdev(ms, backend);
- memory_region_add_subregion(mr, addr, seg);
- addr += size;
- }
+ numa_init_memdev_container(ms, mr);
}
static void numa_stat_memory_devices(NumaNodeMem node_mem[])
@@ -4290,7 +4290,7 @@ int main(int argc, char **argv, char **envp)
parse_numa_opts(current_machine);
if (machine_class->default_ram_id && current_machine->ram_size &&
- !current_machine->ram_memdev_id) {
+ numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
create_default_memdev(current_machine, mem_path, mem_prealloc);
}
/* do monitor/qmp handling at preconfig state if requested */
In case of NUMA there are 2 cases to consider: 1. '-numa node,memdev', the only one that will be available for 5.0 and newer machine types. In this case reuse current behavior, with only difference memdevs are put into MachineState::ram container + a temporary glue to keep memory_region_allocate_system_memory() working until all boards converted. 2. fake NUMA ("-numa node mem" and default RAM splitting) the later has been deprecated and will be removed but the former is going to stay available for compat reasons for 5.0 and older machine types it takes allocate_system_memory_nonnuma() path, like non-NUMA case and falls under conversion to memdev. So extend non-NUMA MachineState::ram initialization introduced in previous patch to take care of fake NUMA case. Signed-off-by: Igor Mammedov <imammedo@redhat.com> --- CC: ehabkost@redhat.com CC: pbonzini@redhat.com CC: pasic@linux.ibm.com --- include/sysemu/numa.h | 1 + hw/core/numa.c | 43 ++++++++++++++++++++++++++++++------------- vl.c | 2 +- 3 files changed, 32 insertions(+), 14 deletions(-)