Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging

x86, machine, numa queue (2017-01-23)

# gpg: Signature made Mon 23 Jan 2017 23:26:59 GMT
# gpg:                using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-and-machine-pull-request:
  kvm: Allow invtsc migration if tsc-khz is set explicitly
  kvm: Simplify invtsc check
  hw/core/null-machine: Add the possibility to instantiate a CPU and RAM
  qemu-options: Rename variables on the -numa "cpus" option
  MAINTAINERS: Add an entry for hw/core/null-machine.c
  machine: Make possible_cpu_arch_ids() return const pointer
  pc: don't return cpu pointer from pc_new_cpu() as it's not needed anymore
  pc: cleanup: move smbios_set_cpuid() into pc_build_smbios()
  arch_init: Remove unnecessary default_config_files table
  vl: Ensure the numa_post_machine_init func in the appropriate location
  i386: Return migration-safe field on query-cpu-definitions
  i386: Remove AMD feature flag aliases from Opteron models
  x86: add AVX512_VPOPCNTDQ features

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

6 files changed, 52 insertions, 46 deletions

diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c
index 5ac89fe..6017ca0 100644
--- a/hw/acpi/cpu.c
+++ b/hw/acpi/cpu.c
@@ -190,7 +190,7 @@ void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
 {
     MachineState *machine = MACHINE(qdev_get_machine());
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    CPUArchIdList *id_list;
+    const CPUArchIdList *id_list;
     int i;
 
     assert(mc->possible_cpu_arch_ids);
@@ -201,7 +201,6 @@ void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner,
         state->devs[i].cpu =  id_list->cpus[i].cpu;
         state->devs[i].arch_id = id_list->cpus[i].arch_id;
     }
-    g_free(id_list);
     memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state,
                           "acpi-mem-hotplug", ACPI_CPU_HOTPLUG_REG_LEN);
     memory_region_add_subregion(as, base_addr, &state->ctrl_reg);
@@ -325,7 +324,7 @@ void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
     Aml *one = aml_int(1);
     Aml *sb_scope = aml_scope("_SB");
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
+    const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
     char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
     Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL);
     AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
@@ -574,5 +573,4 @@ void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
     aml_append(table, method);
 
     g_free(cphp_res_path);
-    g_free(arch_ids);
 }
diff --git a/hw/acpi/cpu_hotplug.c b/hw/acpi/cpu_hotplug.c
index f15a240..5243918 100644
--- a/hw/acpi/cpu_hotplug.c
+++ b/hw/acpi/cpu_hotplug.c
@@ -128,7 +128,7 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine,
     Aml *zero = aml_int(0);
     Aml *one = aml_int(1);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
+    const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
     PCMachineState *pcms = PC_MACHINE(machine);
 
     /*
@@ -329,8 +329,6 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine,
         apic_idx = apic_id + 1;
     }
     aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg));
-    g_free(apic_ids);
-
     aml_append(ctx, sb_scope);
 
     method = aml_method("\\_GPE._E02", 0, AML_NOTSERIALIZED);
diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
index 833fd46..7f8c9dc 100644
--- a/hw/core/Makefile.objs
+++ b/hw/core/Makefile.objs
@@ -12,7 +12,6 @@ common-obj-$(CONFIG_XILINX_AXI) += stream.o
 common-obj-$(CONFIG_PTIMER) += ptimer.o
 common-obj-$(CONFIG_SOFTMMU) += sysbus.o
 common-obj-$(CONFIG_SOFTMMU) += machine.o
-common-obj-$(CONFIG_SOFTMMU) += null-machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
 common-obj-$(CONFIG_SOFTMMU) += register.o
@@ -20,3 +19,4 @@ common-obj-$(CONFIG_SOFTMMU) += or-irq.o
 common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
 
 obj-$(CONFIG_SOFTMMU) += generic-loader.o
+obj-$(CONFIG_SOFTMMU) += null-machine.o
diff --git a/hw/core/null-machine.c b/hw/core/null-machine.c
index 0351ba7..27c8369 100644
--- a/hw/core/null-machine.c
+++ b/hw/core/null-machine.c
@@ -13,18 +13,41 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
+#include "qemu/error-report.h"
 #include "hw/hw.h"
 #include "hw/boards.h"
+#include "sysemu/sysemu.h"
+#include "exec/address-spaces.h"
+#include "cpu.h"
 
-static void machine_none_init(MachineState *machine)
+static void machine_none_init(MachineState *mch)
 {
+    CPUState *cpu = NULL;
+
+    /* Initialize CPU (if a model has been specified) */
+    if (mch->cpu_model) {
+        cpu = cpu_init(mch->cpu_model);
+        if (!cpu) {
+            error_report("Unable to initialize CPU");
+            exit(1);
+        }
+    }
+
+    /* RAM at address zero */
+    if (mch->ram_size) {
+        MemoryRegion *ram = g_new(MemoryRegion, 1);
+
+        memory_region_allocate_system_memory(ram, NULL, "ram", mch->ram_size);
+        memory_region_add_subregion(get_system_memory(), 0, ram);
+    }
 }
 
 static void machine_none_machine_init(MachineClass *mc)
 {
     mc->desc = "empty machine";
     mc->init = machine_none_init;
-    mc->max_cpus = 0;
+    mc->max_cpus = 1;
+    mc->default_ram_size = 0;
 }
 
 DEFINE_MACHINE("none", machine_none_machine_init)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index a1d781a..1c928ab 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -332,7 +332,7 @@ build_fadt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm,
 }
 
 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
-                       CPUArchIdList *apic_ids, GArray *entry)
+                       const CPUArchIdList *apic_ids, GArray *entry)
 {
     uint32_t apic_id = apic_ids->cpus[uid].arch_id;
 
@@ -373,7 +373,7 @@ static void
 build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
 {
     MachineClass *mc = MACHINE_GET_CLASS(pcms);
-    CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
+    const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
     int madt_start = table_data->len;
     AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev);
     AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev);
@@ -394,7 +394,6 @@ build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
             x2apic_mode = true;
         }
     }
-    g_free(apic_ids);
 
     io_apic = acpi_data_push(table_data, sizeof *io_apic);
     io_apic->type = ACPI_APIC_IO;
@@ -2294,7 +2293,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
     int srat_start, numa_start, slots;
     uint64_t mem_len, mem_base, next_base;
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
+    const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
     PCMachineState *pcms = PC_MACHINE(machine);
     ram_addr_t hotplugabble_address_space_size =
         object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE,
@@ -2393,7 +2392,6 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
                  (void *)(table_data->data + srat_start),
                  "SRAT",
                  table_data->len - srat_start, 1, NULL, NULL);
-    g_free(apic_ids);
 }
 
 static void
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index f721fde..c949cf0 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -701,16 +701,20 @@ static uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index)
     }
 }
 
-static void pc_build_smbios(FWCfgState *fw_cfg)
+static void pc_build_smbios(PCMachineState *pcms)
 {
     uint8_t *smbios_tables, *smbios_anchor;
     size_t smbios_tables_len, smbios_anchor_len;
     struct smbios_phys_mem_area *mem_array;
     unsigned i, array_count;
+    X86CPU *cpu = X86_CPU(pcms->possible_cpus->cpus[0].cpu);
+
+    /* tell smbios about cpuid version and features */
+    smbios_set_cpuid(cpu->env.cpuid_version, cpu->env.features[FEAT_1_EDX]);
 
     smbios_tables = smbios_get_table_legacy(&smbios_tables_len);
     if (smbios_tables) {
-        fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
+        fw_cfg_add_bytes(pcms->fw_cfg, FW_CFG_SMBIOS_ENTRIES,
                          smbios_tables, smbios_tables_len);
     }
 
@@ -731,9 +735,9 @@ static void pc_build_smbios(FWCfgState *fw_cfg)
     g_free(mem_array);
 
     if (smbios_anchor) {
-        fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-tables",
+        fw_cfg_add_file(pcms->fw_cfg, "etc/smbios/smbios-tables",
                         smbios_tables, smbios_tables_len);
-        fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-anchor",
+        fw_cfg_add_file(pcms->fw_cfg, "etc/smbios/smbios-anchor",
                         smbios_anchor, smbios_anchor_len);
     }
 }
@@ -1088,28 +1092,24 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
     }
 }
 
-static X86CPU *pc_new_cpu(const char *typename, int64_t apic_id,
-                          Error **errp)
+static void pc_new_cpu(const char *typename, int64_t apic_id, Error **errp)
 {
-    X86CPU *cpu = NULL;
+    Object *cpu = NULL;
     Error *local_err = NULL;
 
-    cpu = X86_CPU(object_new(typename));
+    cpu = object_new(typename);
 
-    object_property_set_int(OBJECT(cpu), apic_id, "apic-id", &local_err);
-    object_property_set_bool(OBJECT(cpu), true, "realized", &local_err);
+    object_property_set_int(cpu, apic_id, "apic-id", &local_err);
+    object_property_set_bool(cpu, true, "realized", &local_err);
 
+    object_unref(cpu);
     if (local_err) {
         error_propagate(errp, local_err);
-        object_unref(OBJECT(cpu));
-        cpu = NULL;
     }
-    return cpu;
 }
 
 void pc_hot_add_cpu(const int64_t id, Error **errp)
 {
-    X86CPU *cpu;
     ObjectClass *oc;
     PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
     int64_t apic_id = x86_cpu_apic_id_from_index(id);
@@ -1129,12 +1129,11 @@ void pc_hot_add_cpu(const int64_t id, Error **errp)
 
     assert(pcms->possible_cpus->cpus[0].cpu); /* BSP is always present */
     oc = OBJECT_CLASS(CPU_GET_CLASS(pcms->possible_cpus->cpus[0].cpu));
-    cpu = pc_new_cpu(object_class_get_name(oc), apic_id, &local_err);
+    pc_new_cpu(object_class_get_name(oc), apic_id, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
     }
-    object_unref(OBJECT(cpu));
 }
 
 void pc_cpus_init(PCMachineState *pcms)
@@ -1144,7 +1143,6 @@ void pc_cpus_init(PCMachineState *pcms)
     ObjectClass *oc;
     const char *typename;
     gchar **model_pieces;
-    X86CPU *cpu = NULL;
     MachineState *machine = MACHINE(pcms);
 
     /* init CPUs */
@@ -1186,14 +1184,9 @@ void pc_cpus_init(PCMachineState *pcms)
         pcms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i);
         pcms->possible_cpus->len++;
         if (i < smp_cpus) {
-            cpu = pc_new_cpu(typename, x86_cpu_apic_id_from_index(i),
-                             &error_fatal);
-            object_unref(OBJECT(cpu));
+            pc_new_cpu(typename, x86_cpu_apic_id_from_index(i), &error_fatal);
         }
     }
-
-    /* tell smbios about cpuid version and features */
-    smbios_set_cpuid(cpu->env.cpuid_version, cpu->env.features[FEAT_1_EDX]);
 }
 
 static void pc_build_feature_control_file(PCMachineState *pcms)
@@ -1266,7 +1259,7 @@ void pc_machine_done(Notifier *notifier, void *data)
 
     acpi_setup();
     if (pcms->fw_cfg) {
-        pc_build_smbios(pcms->fw_cfg);
+        pc_build_smbios(pcms);
         pc_build_feature_control_file(pcms);
         /* update FW_CFG_NB_CPUS to account for -device added CPUs */
         fw_cfg_modify_i16(pcms->fw_cfg, FW_CFG_NB_CPUS, pcms->boot_cpus);
@@ -2247,15 +2240,11 @@ static unsigned pc_cpu_index_to_socket_id(unsigned cpu_index)
     return topo.pkg_id;
 }
 
-static CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *machine)
+static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *machine)
 {
     PCMachineState *pcms = PC_MACHINE(machine);
-    int len = sizeof(CPUArchIdList) +
-              sizeof(CPUArchId) * (pcms->possible_cpus->len);
-    CPUArchIdList *list = g_malloc(len);
-
-    memcpy(list, pcms->possible_cpus, len);
-    return list;
+    assert(pcms->possible_cpus);
+    return pcms->possible_cpus;
 }
 
 static HotpluggableCPUList *pc_query_hotpluggable_cpus(MachineState *machine)