On Tue, 16 Jul 2019 22:51:12 +0800
Tao Xu <tao3...@intel.com> wrote:
> Add struct NumaState in MachineState and move existing numa global
> nb_numa_nodes(renamed as "num_nodes") into NumaState. And add variable
> numa_support into MachineClass to decide which submachines support NUMA.
>
> Suggested-by: Igor Mammedov <imamm...@redhat.com>
> Suggested-by: Eduardo Habkost <ehabk...@redhat.com>
> Signed-off-by: Tao Xu <tao3...@intel.com>
> ---
>
> No changes in v7.
>
> Changes in v6:
> - Rebase to upstream, move globals in arm/sbsa-ref and use
> numa_mem_supported
> - When used once or twice in the function, use
> ms->numa_state->num_nodes directly
> - Correct some mistakes
> - Use once monitor_printf in hmp_info_numa
> ---
> exec.c | 5 ++-
> hw/acpi/aml-build.c | 3 +-
> hw/arm/boot.c | 4 +-
> hw/arm/sbsa-ref.c | 4 +-
> hw/arm/virt-acpi-build.c | 10 +++--
> hw/arm/virt.c | 4 +-
> hw/core/machine-hmp-cmds.c | 12 ++++--
> hw/core/machine.c | 14 +++++--
> hw/core/numa.c | 60 +++++++++++++++++------------
> hw/i386/acpi-build.c | 2 +-
> hw/i386/pc.c | 9 +++--
> hw/mem/pc-dimm.c | 2 +
> hw/pci-bridge/pci_expander_bridge.c | 3 +-
> hw/ppc/spapr.c | 23 +++++------
> include/hw/acpi/aml-build.h | 2 +-
> include/hw/boards.h | 1 +
> include/sysemu/numa.h | 10 ++++-
> 17 files changed, 107 insertions(+), 61 deletions(-)
>
> diff --git a/exec.c b/exec.c
> index 50ea9c5aaa..b6b75d2ad5 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -1736,6 +1736,7 @@ long qemu_minrampagesize(void)
> long hpsize = LONG_MAX;
> long mainrampagesize;
> Object *memdev_root;
> + MachineState *ms = MACHINE(qdev_get_machine());
>
> mainrampagesize = qemu_mempath_getpagesize(mem_path);
>
> @@ -1763,7 +1764,9 @@ long qemu_minrampagesize(void)
> * so if its page size is smaller we have got to report that size
> instead.
> */
> if (hpsize > mainrampagesize &&
> - (nb_numa_nodes == 0 || numa_info[0].node_memdev == NULL)) {
> + (ms->numa_state == NULL ||
> + ms->numa_state->num_nodes == 0 ||
> + numa_info[0].node_memdev == NULL)) {
> static bool warned;
> if (!warned) {
> error_report("Huge page support disabled (n/a for main
> memory).");
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index 555c24f21d..63c1cae8c9 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1726,10 +1726,11 @@ void build_srat_memory(AcpiSratMemoryAffinity
> *numamem, uint64_t base,
> * ACPI spec 5.2.17 System Locality Distance Information Table
> * (Revision 2.0 or later)
> */
> -void build_slit(GArray *table_data, BIOSLinker *linker)
> +void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms)
> {
> int slit_start, i, j;
> slit_start = table_data->len;
> + int nb_numa_nodes = ms->numa_state->num_nodes;
>
> acpi_data_push(table_data, sizeof(AcpiTableHeader));
>
> diff --git a/hw/arm/boot.c b/hw/arm/boot.c
> index a90151f465..e28daa5278 100644
> --- a/hw/arm/boot.c
> +++ b/hw/arm/boot.c
> @@ -598,9 +598,9 @@ int arm_load_dtb(hwaddr addr, const struct arm_boot_info
> *binfo,
> }
> g_strfreev(node_path);
>
> - if (nb_numa_nodes > 0) {
> + if (ms->numa_state != NULL && ms->numa_state->num_nodes > 0) {
> mem_base = binfo->loader_start;
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> mem_len = numa_info[i].node_mem;
> rc = fdt_add_memory_node(fdt, acells, mem_base,
> scells, mem_len, i);
> diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
> index 2aba3c58c5..22847909bf 100644
> --- a/hw/arm/sbsa-ref.c
> +++ b/hw/arm/sbsa-ref.c
> @@ -144,6 +144,7 @@ static void create_fdt(SBSAMachineState *sms)
> {
> void *fdt = create_device_tree(&sms->fdt_size);
> const MachineState *ms = MACHINE(sms);
> + int nb_numa_nodes = ms->numa_state->num_nodes;
> int cpu;
>
> if (!fdt) {
> @@ -760,7 +761,7 @@ sbsa_ref_cpu_index_to_props(MachineState *ms, unsigned
> cpu_index)
> static int64_t
> sbsa_ref_get_default_cpu_node_id(const MachineState *ms, int idx)
> {
> - return idx % nb_numa_nodes;
> + return idx % ms->numa_state->num_nodes;
> }
>
> static void sbsa_ref_instance_init(Object *obj)
> @@ -787,6 +788,7 @@ static void sbsa_ref_class_init(ObjectClass *oc, void
> *data)
> mc->possible_cpu_arch_ids = sbsa_ref_possible_cpu_arch_ids;
> mc->cpu_index_to_instance_props = sbsa_ref_cpu_index_to_props;
> mc->get_default_cpu_node_id = sbsa_ref_get_default_cpu_node_id;
> + mc->numa_mem_supported = true;
> }
>
> static const TypeInfo sbsa_ref_info = {
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 0afb372769..a2cc4b84fe 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -516,7 +516,8 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> int i, srat_start;
> uint64_t mem_base;
> MachineClass *mc = MACHINE_GET_CLASS(vms);
> - const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(MACHINE(vms));
> + MachineState *ms = MACHINE(vms);
> + const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms);
>
> srat_start = table_data->len;
> srat = acpi_data_push(table_data, sizeof(*srat));
> @@ -532,7 +533,7 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> }
>
> mem_base = vms->memmap[VIRT_MEM].base;
> - for (i = 0; i < nb_numa_nodes; ++i) {
> + for (i = 0; i < ms->numa_state->num_nodes; ++i) {
> if (numa_info[i].node_mem > 0) {
> numamem = acpi_data_push(table_data, sizeof(*numamem));
> build_srat_memory(numamem, mem_base, numa_info[i].node_mem, i,
> @@ -758,6 +759,7 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
> GArray *table_offsets;
> unsigned dsdt, xsdt;
> GArray *tables_blob = tables->table_data;
> + MachineState *ms = MACHINE(vms);
>
> table_offsets = g_array_new(false, true /* clear */,
> sizeof(uint32_t));
> @@ -792,12 +794,12 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
> acpi_add_table(table_offsets, tables_blob);
> build_spcr(tables_blob, tables->linker, vms);
>
> - if (nb_numa_nodes > 0) {
> + if (ms->numa_state->num_nodes > 0) {
> acpi_add_table(table_offsets, tables_blob);
> build_srat(tables_blob, tables->linker, vms);
> if (have_numa_distance) {
> acpi_add_table(table_offsets, tables_blob);
> - build_slit(tables_blob, tables->linker);
> + build_slit(tables_blob, tables->linker, ms);
> }
> }
>
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9b380504b6..01a32272b4 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -199,6 +199,8 @@ static bool cpu_type_valid(const char *cpu)
>
> static void create_fdt(VirtMachineState *vms)
> {
> + MachineState *ms = MACHINE(vms);
> + int nb_numa_nodes = ms->numa_state->num_nodes;
> void *fdt = create_device_tree(&vms->fdt_size);
>
> if (!fdt) {
> @@ -1842,7 +1844,7 @@ virt_cpu_index_to_props(MachineState *ms, unsigned
> cpu_index)
>
> static int64_t virt_get_default_cpu_node_id(const MachineState *ms, int idx)
> {
> - return idx % nb_numa_nodes;
> + return idx % ms->numa_state->num_nodes;
> }
>
> static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms)
> diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c
> index 1f66bda346..6a1a2599d8 100644
> --- a/hw/core/machine-hmp-cmds.c
> +++ b/hw/core/machine-hmp-cmds.c
> @@ -139,15 +139,21 @@ void hmp_info_memdev(Monitor *mon, const QDict *qdict)
>
> void hmp_info_numa(Monitor *mon, const QDict *qdict)
> {
> - int i;
> + int i, nb_numa_nodes;
> NumaNodeMem *node_mem;
> CpuInfoList *cpu_list, *cpu;
> + MachineState *ms = MACHINE(qdev_get_machine());
> +
> + nb_numa_nodes = ms->numa_state ? ms->numa_state->num_nodes : 0;
> + monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
> + if (!nb_numa_nodes) {
> + return;
> + }
>
> cpu_list = qmp_query_cpus(&error_abort);
> node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
>
> - query_numa_node_mem(node_mem);
> - monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
> + query_numa_node_mem(node_mem, ms);
> for (i = 0; i < nb_numa_nodes; i++) {
> monitor_printf(mon, "node %d cpus:", i);
> for (cpu = cpu_list; cpu; cpu = cpu->next) {
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 2be19ec0cd..4228bcd2a2 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -966,6 +966,9 @@ static void machine_initfn(Object *obj)
> NULL);
> }
>
> + if (mc->numa_mem_supported) {
> + ms->numa_state = g_new0(NumaState, 1);
> + }
>
> /* Register notifier when init is done for sysbus sanity checks */
> ms->sysbus_notifier.notify = machine_init_notify;
> @@ -986,6 +989,7 @@ static void machine_finalize(Object *obj)
> g_free(ms->firmware);
> g_free(ms->device_memory);
> g_free(ms->nvdimms_state);
> + g_free(ms->numa_state);
> }
>
> bool machine_usb(MachineState *machine)
> @@ -1060,7 +1064,7 @@ static void machine_numa_finish_cpu_init(MachineState
> *machine)
> MachineClass *mc = MACHINE_GET_CLASS(machine);
> const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(machine);
>
> - assert(nb_numa_nodes);
> + assert(machine->numa_state->num_nodes);
> for (i = 0; i < possible_cpus->len; i++) {
> if (possible_cpus->cpus[i].props.has_node_id) {
> break;
> @@ -1106,9 +1110,11 @@ void machine_run_board_init(MachineState *machine)
> {
> MachineClass *machine_class = MACHINE_GET_CLASS(machine);
>
> - numa_complete_configuration(machine);
> - if (nb_numa_nodes) {
> - machine_numa_finish_cpu_init(machine);
> + if (machine_class->numa_mem_supported) {
> + numa_complete_configuration(machine);
> + if (machine->numa_state->num_nodes) {
> + machine_numa_finish_cpu_init(machine);
> + }
> }
>
> /* If the machine supports the valid_cpu_types check and the user
> diff --git a/hw/core/numa.c b/hw/core/numa.c
> index a11431483c..4d5e308bf1 100644
> --- a/hw/core/numa.c
> +++ b/hw/core/numa.c
> @@ -50,7 +50,6 @@ static int have_mem;
> static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
> * For all nodes, nodeid < max_numa_nodeid
> */
> -int nb_numa_nodes;
> bool have_numa_distance;
> NodeInfo numa_info[MAX_NODES];
>
> @@ -67,7 +66,7 @@ static void parse_numa_node(MachineState *ms,
> NumaNodeOptions *node,
> if (node->has_nodeid) {
> nodenr = node->nodeid;
> } else {
> - nodenr = nb_numa_nodes;
> + nodenr = ms->numa_state->num_nodes;
> }
>
> if (nodenr >= MAX_NODES) {
> @@ -133,10 +132,11 @@ static void parse_numa_node(MachineState *ms,
> NumaNodeOptions *node,
> }
> numa_info[nodenr].present = true;
> max_numa_nodeid = MAX(max_numa_nodeid, nodenr + 1);
> - nb_numa_nodes++;
> + ms->numa_state->num_nodes++;
> }
>
> -static void parse_numa_distance(NumaDistOptions *dist, Error **errp)
> +static
> +void parse_numa_distance(MachineState *ms, NumaDistOptions *dist, Error
> **errp)
> {
> uint16_t src = dist->src;
> uint16_t dst = dist->dst;
> @@ -174,6 +174,12 @@ static void parse_numa_distance(NumaDistOptions *dist,
> Error **errp)
> void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp)
> {
> Error *err = NULL;
> + MachineClass *mc = MACHINE_GET_CLASS(ms);
> +
> + if (!mc->numa_mem_supported) {
> + error_setg(errp, "NUMA is not supported by this machine-type");
> + goto end;
> + }
>
> switch (object->type) {
> case NUMA_OPTIONS_TYPE_NODE:
> @@ -183,7 +189,7 @@ void set_numa_options(MachineState *ms, NumaOptions
> *object, Error **errp)
> }
> break;
> case NUMA_OPTIONS_TYPE_DIST:
> - parse_numa_distance(&object->u.dist, &err);
> + parse_numa_distance(ms, &object->u.dist, &err);
> if (err) {
> goto end;
> }
> @@ -248,10 +254,11 @@ end:
> * distance from a node to itself is always NUMA_DISTANCE_MIN,
> * so providing it is never necessary.
> */
> -static void validate_numa_distance(void)
> +static void validate_numa_distance(MachineState *ms)
> {
> int src, dst;
> bool is_asymmetrical = false;
> + int nb_numa_nodes = ms->numa_state->num_nodes;
>
> for (src = 0; src < nb_numa_nodes; src++) {
> for (dst = src; dst < nb_numa_nodes; dst++) {
> @@ -289,7 +296,7 @@ static void validate_numa_distance(void)
> }
> }
>
> -static void complete_init_numa_distance(void)
> +static void complete_init_numa_distance(MachineState *ms)
> {
> int src, dst;
>
> @@ -298,8 +305,8 @@ static void complete_init_numa_distance(void)
> * there would not be any missing distance except local node, which
> * is verified by validate_numa_distance above.
> */
> - for (src = 0; src < nb_numa_nodes; src++) {
> - for (dst = 0; dst < nb_numa_nodes; dst++) {
> + for (src = 0; src < ms->numa_state->num_nodes; src++) {
> + for (dst = 0; dst < ms->numa_state->num_nodes; dst++) {
> if (numa_info[src].distance[dst] == 0) {
> if (src == dst) {
> numa_info[src].distance[dst] = NUMA_DISTANCE_MIN;
> @@ -365,7 +372,7 @@ void numa_complete_configuration(MachineState *ms)
> *
> * Enable NUMA implicitly by adding a new NUMA node automatically.
> */
> - if (ms->ram_slots > 0 && nb_numa_nodes == 0 &&
> + if (ms->ram_slots > 0 && ms->numa_state->num_nodes == 0 &&
> mc->auto_enable_numa_with_memhp) {
> NumaNodeOptions node = { };
> parse_numa_node(ms, &node, &error_abort);
> @@ -383,26 +390,27 @@ void numa_complete_configuration(MachineState *ms)
> }
>
> /* This must be always true if all nodes are present: */
> - assert(nb_numa_nodes == max_numa_nodeid);
> + assert(ms->numa_state->num_nodes == max_numa_nodeid);
>
> - if (nb_numa_nodes > 0) {
> + if (ms->numa_state->num_nodes > 0) {
> uint64_t numa_total;
>
> - if (nb_numa_nodes > MAX_NODES) {
> - nb_numa_nodes = MAX_NODES;
> + if (ms->numa_state->num_nodes > MAX_NODES) {
> + ms->numa_state->num_nodes = MAX_NODES;
> }
>
> /* If no memory size is given for any node, assume the default case
> * and distribute the available memory equally across all nodes
> */
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> if (numa_info[i].node_mem != 0) {
> break;
> }
> }
> - if (i == nb_numa_nodes) {
> + if (i == ms->numa_state->num_nodes) {
> assert(mc->numa_auto_assign_ram);
> - mc->numa_auto_assign_ram(mc, numa_info, nb_numa_nodes, ram_size);
> + mc->numa_auto_assign_ram(mc, numa_info,
> + ms->numa_state->num_nodes, ram_size);
> if (!qtest_enabled()) {
> warn_report("Default splitting of RAM between nodes is
> deprecated,"
> " Use '-numa node,memdev' to explictly define
> RAM"
> @@ -411,7 +419,7 @@ void numa_complete_configuration(MachineState *ms)
> }
>
> numa_total = 0;
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> numa_total += numa_info[i].node_mem;
> }
> if (numa_total != ram_size) {
> @@ -435,10 +443,10 @@ void numa_complete_configuration(MachineState *ms)
> */
> if (have_numa_distance) {
> /* Validate enough NUMA distance information was provided. */
> - validate_numa_distance();
> + validate_numa_distance(ms);
>
> /* Validation succeeded, now fill in any missing distances. */
> - complete_init_numa_distance();
> + complete_init_numa_distance(ms);
> }
> }
> }
> @@ -505,14 +513,16 @@ void memory_region_allocate_system_memory(MemoryRegion
> *mr, Object *owner,
> {
> uint64_t addr = 0;
> int i;
> + MachineState *ms = MACHINE(qdev_get_machine());
>
> - if (nb_numa_nodes == 0 || !have_memdevs) {
> + if (ms->numa_state == NULL ||
> + ms->numa_state->num_nodes == 0 || !have_memdevs) {
> allocate_system_memory_nonnuma(mr, owner, name, ram_size);
> return;
> }
>
> memory_region_init(mr, owner, name, ram_size);
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> uint64_t size = numa_info[i].node_mem;
> HostMemoryBackend *backend = numa_info[i].node_memdev;
> if (!backend) {
> @@ -570,16 +580,16 @@ static void numa_stat_memory_devices(NumaNodeMem
> node_mem[])
> qapi_free_MemoryDeviceInfoList(info_list);
> }
>
> -void query_numa_node_mem(NumaNodeMem node_mem[])
> +void query_numa_node_mem(NumaNodeMem node_mem[], MachineState *ms)
> {
> int i;
>
> - if (nb_numa_nodes <= 0) {
> + if (ms->numa_state == NULL || ms->numa_state->num_nodes <= 0) {
> return;
> }
>
> numa_stat_memory_devices(node_mem);
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> node_mem[i].node_mem += numa_info[i].node_mem;
> }
> }
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index d281ffa89e..83a8551af6 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -2685,7 +2685,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState
> *machine)
> build_srat(tables_blob, tables->linker, machine);
> if (have_numa_distance) {
> acpi_add_table(table_offsets, tables_blob);
> - build_slit(tables_blob, tables->linker);
> + build_slit(tables_blob, tables->linker, machine);
> }
> }
> if (acpi_get_mcfg(&mcfg)) {
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index c33ce47578..6d87fad739 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -995,6 +995,8 @@ static FWCfgState *bochs_bios_init(AddressSpace *as,
> PCMachineState *pcms)
> int i;
> const CPUArchIdList *cpus;
> MachineClass *mc = MACHINE_GET_CLASS(pcms);
> + MachineState *ms = MACHINE(pcms);
> + int nb_numa_nodes = ms->numa_state->num_nodes;
>
> fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, as);
> fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, pcms->boot_cpus);
> @@ -1758,12 +1760,13 @@ void pc_machine_done(Notifier *notifier, void *data)
> void pc_guest_info_init(PCMachineState *pcms)
> {
> int i;
> + MachineState *ms = MACHINE(pcms);
>
> pcms->apic_xrupt_override = kvm_allows_irq0_override();
> - pcms->numa_nodes = nb_numa_nodes;
> + pcms->numa_nodes = ms->numa_state->num_nodes;
> pcms->node_mem = g_malloc0(pcms->numa_nodes *
> sizeof *pcms->node_mem);
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < ms->numa_state->num_nodes; i++) {
> pcms->node_mem[i] = numa_info[i].node_mem;
> }
>
> @@ -2842,7 +2845,7 @@ static int64_t pc_get_default_cpu_node_id(const
> MachineState *ms, int idx)
> x86_topo_ids_from_apicid(ms->possible_cpus->cpus[idx].arch_id,
> pcms->smp_dies, ms->smp.cores,
> ms->smp.threads, &topo);
> - return topo.pkg_id % nb_numa_nodes;
> + return topo.pkg_id % ms->numa_state->num_nodes;
> }
>
> static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
> diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
> index b1239fd0d3..0a32a9fb17 100644
> --- a/hw/mem/pc-dimm.c
> +++ b/hw/mem/pc-dimm.c
> @@ -161,6 +161,8 @@ static void pc_dimm_realize(DeviceState *dev, Error
> **errp)
> {
> PCDIMMDevice *dimm = PC_DIMM(dev);
> PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
> + MachineState *ms = MACHINE(qdev_get_machine());
> + int nb_numa_nodes = ms->numa_state->num_nodes;
>
> if (!dimm->hostmem) {
> error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
> diff --git a/hw/pci-bridge/pci_expander_bridge.c
> b/hw/pci-bridge/pci_expander_bridge.c
> index aecf3d7ddf..0b4c5f1e71 100644
> --- a/hw/pci-bridge/pci_expander_bridge.c
> +++ b/hw/pci-bridge/pci_expander_bridge.c
> @@ -212,9 +212,10 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool
> pcie, Error **errp)
> PCIBus *bus;
> const char *dev_name = NULL;
> Error *local_err = NULL;
> + MachineState *ms = MACHINE(qdev_get_machine());
>
> if (pxb->numa_node != NUMA_NODE_UNASSIGNED &&
> - pxb->numa_node >= nb_numa_nodes) {
> + pxb->numa_node >= ms->numa_state->num_nodes) {
this will crash if user tries to use device on machine that doesn't support numa
check that numa_state is not NULL before dereferencing
> error_setg(errp, "Illegal numa node %d", pxb->numa_node);
> return;
> }
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index 821f0d4a49..2aec966616 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -331,7 +331,7 @@ static int spapr_fixup_cpu_dt(void *fdt,
> SpaprMachineState *spapr)
> return ret;
> }
>
> - if (nb_numa_nodes > 1) {
> + if (ms->numa_state->num_nodes > 1) {
> ret = spapr_fixup_cpu_numa_dt(fdt, offset, cpu);
> if (ret < 0) {
> return ret;
> @@ -351,9 +351,9 @@ static int spapr_fixup_cpu_dt(void *fdt,
> SpaprMachineState *spapr)
>
> static hwaddr spapr_node0_size(MachineState *machine)
> {
> - if (nb_numa_nodes) {
> + if (machine->numa_state->num_nodes) {
> int i;
> - for (i = 0; i < nb_numa_nodes; ++i) {
> + for (i = 0; i < machine->numa_state->num_nodes; ++i) {
> if (numa_info[i].node_mem) {
> return MIN(pow2floor(numa_info[i].node_mem),
> machine->ram_size);
> @@ -398,18 +398,18 @@ static int spapr_populate_memory(SpaprMachineState
> *spapr, void *fdt)
> {
> MachineState *machine = MACHINE(spapr);
> hwaddr mem_start, node_size;
> - int i, nb_nodes = nb_numa_nodes;
> + int i;
> NodeInfo *nodes = numa_info;
> NodeInfo ramnode;
>
> /* No NUMA nodes, assume there is just one node with whole RAM */
> - if (!nb_numa_nodes) {
> - nb_nodes = 1;
> + if (!machine->numa_state->num_nodes) {
> + machine->numa_state->num_nodes = 1;
I don't like user fixing up generic machine data that came from CLI
(or luck of such) (that's why I dislike globals, since they
could be changed from random places making code more fragile)
I'd keep fixup local (i.e. using nb_nodes)
> ramnode.node_mem = machine->ram_size;
> nodes = &ramnode;
> }
>
> - for (i = 0, mem_start = 0; i < nb_nodes; ++i) {
> + for (i = 0, mem_start = 0; i < machine->numa_state->num_nodes; ++i) {
> if (!nodes[i].node_mem) {
> continue;
> }
> @@ -554,7 +554,7 @@ static void spapr_populate_cpu_dt(CPUState *cs, void
> *fdt, int offset,
> _FDT((fdt_setprop(fdt, offset, "ibm,pft-size",
> pft_size_prop, sizeof(pft_size_prop))));
>
> - if (nb_numa_nodes > 1) {
> + if (ms->numa_state->num_nodes > 1) {
> _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu));
> }
>
> @@ -861,6 +861,7 @@ static int spapr_populate_drmem_v1(SpaprMachineState
> *spapr, void *fdt,
> static int spapr_populate_drconf_memory(SpaprMachineState *spapr, void *fdt)
> {
> MachineState *machine = MACHINE(spapr);
> + int nb_numa_nodes = machine->numa_state->num_nodes;
> int ret, i, offset;
> uint64_t lmb_size = SPAPR_MEMORY_BLOCK_SIZE;
> uint32_t prop_lmb_size[] = {0, cpu_to_be32(lmb_size)};
> @@ -1750,7 +1751,7 @@ static void spapr_machine_reset(MachineState *machine)
> * The final value of spapr->gpu_numa_id is going to be written to
> * max-associativity-domains in spapr_build_fdt().
> */
> - spapr->gpu_numa_id = MAX(1, nb_numa_nodes);
> + spapr->gpu_numa_id = MAX(1, machine->numa_state->num_nodes);
> qemu_devices_reset();
>
> /*
> @@ -2537,7 +2538,7 @@ static void spapr_validate_node_memory(MachineState
> *machine, Error **errp)
> return;
> }
>
> - for (i = 0; i < nb_numa_nodes; i++) {
> + for (i = 0; i < machine->numa_state->num_nodes; i++) {
> if (numa_info[i].node_mem % SPAPR_MEMORY_BLOCK_SIZE) {
> error_setg(errp,
> "Node %d memory size 0x%" PRIx64
> @@ -4139,7 +4140,7 @@ spapr_cpu_index_to_props(MachineState *machine,
> unsigned cpu_index)
>
> static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int idx)
> {
> - return idx / ms->smp.cores % nb_numa_nodes;
> + return idx / ms->smp.cores % ms->numa_state->num_nodes;
> }
>
> static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState
> *machine)
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index 1a563ad756..991cf05134 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -414,7 +414,7 @@ build_append_gas_from_struct(GArray *table, const struct
> AcpiGenericAddress *s)
> void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> uint64_t len, int node, MemoryAffinityFlags flags);
>
> -void build_slit(GArray *table_data, BIOSLinker *linker);
> +void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms);
>
> void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f,
> const char *oem_id, const char *oem_table_id);
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index a71d1a53a5..2eb9a0b4e0 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -298,6 +298,7 @@ struct MachineState {
> CPUArchIdList *possible_cpus;
> CpuTopology smp;
> struct NVDIMMState *nvdimms_state;
> + struct NumaState *numa_state;
> };
>
> #define DEFINE_MACHINE(namestr, machine_initfn) \
> diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h
> index 01a263eba2..3e8dbf20c1 100644
> --- a/include/sysemu/numa.h
> +++ b/include/sysemu/numa.h
> @@ -6,7 +6,6 @@
> #include "sysemu/hostmem.h"
> #include "hw/boards.h"
>
> -extern int nb_numa_nodes; /* Number of NUMA nodes */
> extern bool have_numa_distance;
>
> struct NodeInfo {
> @@ -23,10 +22,17 @@ struct NumaNodeMem {
>
> extern NodeInfo numa_info[MAX_NODES];
>
> +struct NumaState {
> + /* Number of NUMA nodes */
> + int num_nodes;
> +
> +};
> +typedef struct NumaState NumaState;
> +
> void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp);
> void parse_numa_opts(MachineState *ms);
> void numa_complete_configuration(MachineState *ms);
> -void query_numa_node_mem(NumaNodeMem node_mem[]);
> +void query_numa_node_mem(NumaNodeMem node_mem[], MachineState *ms);
> extern QemuOptsList qemu_numa_opts;
> void numa_legacy_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
> int nb_nodes, ram_addr_t size);
