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qemu/qemu/e41e23f7a72dadf052d4f18cd13ebcd6cd6427f1/./hw/core/machine.c
blob: 4da24f014aabbacf2c1a9d51ed543679dbc4cfe5 [file]
/*
* QEMU Machine
*
* Copyright (C) 2014 Red Hat Inc
*
* Authors:
* Marcel Apfelbaum <marcel.a@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu/accel.h"
#include "system/replay.h"
#include "hw/core/boards.h"
#include "hw/core/loader.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "qapi/qapi-visit-machine.h"
#include "qapi/qapi-commands-machine.h"
#include "qemu/madvise.h"
#include "qom/compat-properties.h"
#include "qom/object_interfaces.h"
#include "system/cpus.h"
#include "system/system.h"
#include "system/reset.h"
#include "system/runstate.h"
#include "system/xen.h"
#include "system/qtest.h"
#include "hw/pci/pci_bridge.h"
#include "hw/mem/nvdimm.h"
#include "migration/global_state.h"
#include "system/confidential-guest-support.h"
#include "hw/virtio/virtio-pci.h"
#include "hw/virtio/virtio-net.h"
#include "hw/virtio/virtio-iommu.h"
#include "hw/acpi/generic_event_device.h"
#include "qemu/audio.h"
#include "hw/arm/smmuv3.h"
GlobalProperty hw_compat_11_1[] = {
{ "sysbus-ehci-usb", "x-migrate-fetch-addr-64bit", "off" },
{ "pci-ehci-usb", "x-migrate-fetch-addr-64bit", "off" },
{ "pcie-root-port", "speed", "16" },
};
const size_t hw_compat_11_1_len = G_N_ELEMENTS(hw_compat_11_1);
GlobalProperty hw_compat_11_0[] = {
{ "virtio-mmio", VIRTIO_QUEUE_SIZE_OVERRIDE, "1024" },
{ "chardev-vc", "encoding", "cp437" },
{ "tpm-crb", "cap-chunk", "off" },
{ "tpm-crb", "x-allow-chunk-migration", "off" },
{ "tpm-tis-device", "ppi", "off" },
{ TYPE_ARM_SMMUV3, "ats", "off" },
{ TYPE_ARM_SMMUV3, "ril", "on" },
{ TYPE_ARM_SMMUV3, "ssidsize", "0" },
{ TYPE_ARM_SMMUV3, "oas", "44" },
{ "migration", "switchover-ack-legacy", "on" },
{ "usb-ccid", "x-accurate-message-length", "off" },
{ "usb-ccid", "x-pin-support", "on" },
{ "usb-ccid", "x-t1-support", "off" },
{ "usb-ccid", "x-migrate-pending-answers", "off" },
};
const size_t hw_compat_11_0_len = G_N_ELEMENTS(hw_compat_11_0);
GlobalProperty hw_compat_10_2[] = {
{ "scsi-block", "migrate-pr", "off" },
{ "isa-cirrus-vga", "global-vmstate", "true" },
};
const size_t hw_compat_10_2_len = G_N_ELEMENTS(hw_compat_10_2);
GlobalProperty hw_compat_10_1[] = {
{ TYPE_ACPI_GED, "x-has-hest-addr", "false" },
{ TYPE_VIRTIO_NET, "host_tunnel", "off" },
{ TYPE_VIRTIO_NET, "host_tunnel_csum", "off" },
{ TYPE_VIRTIO_NET, "guest_tunnel", "off" },
{ TYPE_VIRTIO_NET, "guest_tunnel_csum", "off" },
};
const size_t hw_compat_10_1_len = G_N_ELEMENTS(hw_compat_10_1);
GlobalProperty hw_compat_10_0[] = {
{ "scsi-hd", "dpofua", "off" },
{ "vfio-pci", "x-migration-load-config-after-iter", "off" },
{ "ramfb", "use-legacy-x86-rom", "true"},
{ "vfio-pci-nohotplug", "use-legacy-x86-rom", "true" },
{ "chardev-qemu-vdagent", "x-migration-blocked", "true" },
};
const size_t hw_compat_10_0_len = G_N_ELEMENTS(hw_compat_10_0);
GlobalProperty hw_compat_9_2[] = {
{ "arm-cpu", "backcompat-pauth-default-use-qarma5", "true"},
{ "virtio-balloon-pci", "vectors", "0" },
{ "virtio-balloon-pci-transitional", "vectors", "0" },
{ "virtio-balloon-pci-non-transitional", "vectors", "0" },
{ "virtio-mem-pci", "vectors", "0" },
{ "migration", "multifd-clean-tls-termination", "false" },
{ "migration", "send-switchover-start", "off"},
{ "vfio-pci", "x-migration-multifd-transfer", "off" },
};
const size_t hw_compat_9_2_len = G_N_ELEMENTS(hw_compat_9_2);
GlobalProperty hw_compat_9_1[] = {
{ TYPE_PCI_DEVICE, "x-pcie-ext-tag", "false" },
};
const size_t hw_compat_9_1_len = G_N_ELEMENTS(hw_compat_9_1);
GlobalProperty hw_compat_9_0[] = {
{ "arm-cpu", "backcompat-cntfrq", "true" },
{ "scsi-hd", "migrate-emulated-scsi-request", "false" },
{ "scsi-cd", "migrate-emulated-scsi-request", "false" },
{ "vfio-pci", "skip-vsc-check", "false" },
{ "virtio-pci", "x-pcie-pm-no-soft-reset", "off" },
{ "sd-card", "spec_version", "2" },
};
const size_t hw_compat_9_0_len = G_N_ELEMENTS(hw_compat_9_0);
GlobalProperty hw_compat_8_2[] = {
{ "migration", "zero-page-detection", "legacy"},
{ TYPE_VIRTIO_IOMMU_PCI, "granule", "4k" },
{ TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "64" },
{ "virtio-gpu-device", "x-scanout-vmstate-version", "1" },
};
const size_t hw_compat_8_2_len = G_N_ELEMENTS(hw_compat_8_2);
GlobalProperty hw_compat_8_1[] = {
{ TYPE_PCI_BRIDGE, "x-pci-express-writeable-slt-bug", "true" },
{ "ramfb", "x-migrate", "off" },
{ "vfio-pci-nohotplug", "x-ramfb-migrate", "off" },
{ "igb", "x-pcie-flr-init", "off" },
{ TYPE_VIRTIO_NET, "host_uso", "off"},
{ TYPE_VIRTIO_NET, "guest_uso4", "off"},
{ TYPE_VIRTIO_NET, "guest_uso6", "off"},
};
const size_t hw_compat_8_1_len = G_N_ELEMENTS(hw_compat_8_1);
GlobalProperty hw_compat_8_0[] = {
{ "migration", "multifd-flush-after-each-section", "on"},
{ TYPE_PCI_DEVICE, "x-pcie-ari-nextfn-1", "on" },
};
const size_t hw_compat_8_0_len = G_N_ELEMENTS(hw_compat_8_0);
GlobalProperty hw_compat_7_2[] = {
{ "e1000e", "migrate-timadj", "off" },
{ "virtio-mem", "x-early-migration", "false" },
{ "migration", "x-preempt-pre-7-2", "true" },
{ TYPE_PCI_DEVICE, "x-pcie-err-unc-mask", "off" },
};
const size_t hw_compat_7_2_len = G_N_ELEMENTS(hw_compat_7_2);
GlobalProperty hw_compat_7_1[] = {
{ "virtio-device", "queue_reset", "false" },
{ "virtio-rng-pci", "vectors", "0" },
{ "virtio-rng-pci-transitional", "vectors", "0" },
{ "virtio-rng-pci-non-transitional", "vectors", "0" },
};
const size_t hw_compat_7_1_len = G_N_ELEMENTS(hw_compat_7_1);
GlobalProperty hw_compat_7_0[] = {
{ "arm-gicv3-common", "force-8-bit-prio", "on" },
{ "nvme-ns", "eui64-default", "on"},
};
const size_t hw_compat_7_0_len = G_N_ELEMENTS(hw_compat_7_0);
GlobalProperty hw_compat_6_2[] = {
{ "PIIX4_PM", "x-not-migrate-acpi-index", "on"},
};
const size_t hw_compat_6_2_len = G_N_ELEMENTS(hw_compat_6_2);
GlobalProperty hw_compat_6_1[] = {
{ "vhost-user-vsock-device", "seqpacket", "off" },
{ "nvme-ns", "shared", "off" },
};
const size_t hw_compat_6_1_len = G_N_ELEMENTS(hw_compat_6_1);
GlobalProperty hw_compat_6_0[] = {
{ "gpex-pcihost", "allow-unmapped-accesses", "false" },
{ "i8042", "extended-state", "false"},
{ "nvme-ns", "eui64-default", "off"},
{ "e1000", "init-vet", "off" },
{ "e1000e", "init-vet", "off" },
{ "vhost-vsock-device", "seqpacket", "off" },
};
const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);
GlobalProperty hw_compat_5_2[] = {
{ "ICH9-LPC", "smm-compat", "on"},
{ "PIIX4_PM", "smm-compat", "on"},
{ "virtio-blk-device", "report-discard-granularity", "off" },
{ "virtio-net-pci-base", "vectors", "3"},
{ "nvme", "msix-exclusive-bar", "on"},
};
const size_t hw_compat_5_2_len = G_N_ELEMENTS(hw_compat_5_2);
GlobalProperty hw_compat_5_1[] = {
{ "vhost-scsi", "num_queues", "1"},
{ "vhost-user-blk", "num-queues", "1"},
{ "vhost-user-scsi", "num_queues", "1"},
{ "virtio-blk-device", "num-queues", "1"},
{ "virtio-scsi-device", "num_queues", "1"},
{ "nvme", "use-intel-id", "on"},
{ "pvpanic", "events", "1"}, /* PVPANIC_PANICKED */
{ "pl011", "migrate-clk", "off" },
{ "virtio-pci", "x-ats-page-aligned", "off"},
};
const size_t hw_compat_5_1_len = G_N_ELEMENTS(hw_compat_5_1);
GlobalProperty hw_compat_5_0[] = {
{ "pci-host-bridge", "x-config-reg-migration-enabled", "off" },
{ "virtio-balloon-device", "page-poison", "false" },
{ "vmport", "x-read-set-eax", "off" },
{ "vmport", "x-signal-unsupported-cmd", "off" },
{ "vmport", "x-report-vmx-type", "off" },
{ "vmport", "x-cmds-v2", "off" },
{ "virtio-device", "x-disable-legacy-check", "true" },
};
const size_t hw_compat_5_0_len = G_N_ELEMENTS(hw_compat_5_0);
GlobalProperty hw_compat_4_2[] = {
{ "virtio-blk-device", "queue-size", "128"},
{ "virtio-scsi-device", "virtqueue_size", "128"},
{ "virtio-blk-device", "x-enable-wce-if-config-wce", "off" },
{ "virtio-blk-device", "seg-max-adjust", "off"},
{ "virtio-scsi-device", "seg_max_adjust", "off"},
{ "vhost-blk-device", "seg_max_adjust", "off"},
{ "usb-host", "suppress-remote-wake", "off" },
{ "usb-redir", "suppress-remote-wake", "off" },
{ "qxl", "revision", "4" },
{ "qxl-vga", "revision", "4" },
{ "fw_cfg", "acpi-mr-restore", "false" },
{ "virtio-device", "use-disabled-flag", "false" },
};
const size_t hw_compat_4_2_len = G_N_ELEMENTS(hw_compat_4_2);
GlobalProperty hw_compat_4_1[] = {
{ "virtio-pci", "x-pcie-flr-init", "off" },
};
const size_t hw_compat_4_1_len = G_N_ELEMENTS(hw_compat_4_1);
MachineState *current_machine;
static char *machine_get_kernel(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->kernel_filename);
}
static void machine_set_kernel(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->kernel_filename);
ms->kernel_filename = g_strdup(value);
}
static char *machine_get_shim(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->shim_filename);
}
static void machine_set_shim(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->shim_filename);
ms->shim_filename = g_strdup(value);
}
static char *machine_get_initrd(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->initrd_filename);
}
static void machine_set_initrd(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->initrd_filename);
ms->initrd_filename = g_strdup(value);
}
static char *machine_get_append(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->kernel_cmdline);
}
static void machine_set_append(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->kernel_cmdline);
ms->kernel_cmdline = g_strdup(value);
}
static char *machine_get_dtb(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->dtb);
}
static void machine_set_dtb(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->dtb);
ms->dtb = g_strdup(value);
}
static char *machine_get_dumpdtb(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->dumpdtb);
}
static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->dumpdtb);
ms->dumpdtb = g_strdup(value);
}
static void machine_get_phandle_start(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
MachineState *ms = MACHINE(obj);
int64_t value = ms->phandle_start;
visit_type_int(v, name, &value, errp);
}
static void machine_set_phandle_start(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
MachineState *ms = MACHINE(obj);
int64_t value;
if (!visit_type_int(v, name, &value, errp)) {
return;
}
ms->phandle_start = value;
}
static char *machine_get_dt_compatible(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->dt_compatible);
}
static void machine_set_dt_compatible(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->dt_compatible);
ms->dt_compatible = g_strdup(value);
}
static bool machine_get_dump_guest_core(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->dump_guest_core;
}
static void machine_set_dump_guest_core(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
if (!value && QEMU_MADV_DONTDUMP == QEMU_MADV_INVALID) {
error_setg(errp, "Dumping guest memory cannot be disabled on this host");
return;
}
ms->dump_guest_core = value;
}
static bool machine_get_new_accel_vmfd_on_reset(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->new_accel_vmfd_on_reset;
}
static void machine_set_new_accel_vmfd_on_reset(Object *obj,
bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->new_accel_vmfd_on_reset = value;
}
static bool machine_get_mem_merge(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->mem_merge;
}
static void machine_set_mem_merge(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
if (value && QEMU_MADV_MERGEABLE == QEMU_MADV_INVALID) {
error_setg(errp, "Memory merging is not supported on this host");
return;
}
ms->mem_merge = value;
}
#ifdef CONFIG_POSIX
static bool machine_get_aux_ram_share(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->aux_ram_share;
}
static void machine_set_aux_ram_share(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->aux_ram_share = value;
}
#endif
static bool machine_get_usb(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->usb;
}
static void machine_set_usb(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->usb = value;
ms->usb_disabled = !value;
}
static bool machine_get_graphics(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->enable_graphics;
}
static void machine_set_graphics(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->enable_graphics = value;
}
static char *machine_get_firmware(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->firmware);
}
static void machine_set_firmware(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->firmware);
ms->firmware = g_strdup(value);
}
static void machine_set_suppress_vmdesc(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->suppress_vmdesc = value;
}
static bool machine_get_suppress_vmdesc(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->suppress_vmdesc;
}
static char *machine_get_memory_encryption(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
if (ms->cgs) {
return g_strdup(object_get_canonical_path_component(OBJECT(ms->cgs)));
}
return NULL;
}
static void machine_set_memory_encryption(Object *obj, const char *value,
Error **errp)
{
Object *cgs =
object_resolve_path_component(object_get_objects_root(), value);
warn_report("memory-encryption is deprecated, use confidential-guest-support instead");
if (!cgs) {
error_setg(errp, "No such memory encryption object '%s'", value);
return;
}
object_property_set_link(obj, "confidential-guest-support", cgs, errp);
}
static void machine_check_confidential_guest_support(const Object *obj,
const char *name,
Object *new_target,
Error **errp)
{
/*
* So far the only constraint is that the target has the
* TYPE_CONFIDENTIAL_GUEST_SUPPORT interface, and that's checked
* by the QOM core
*/
}
static bool machine_get_nvdimm(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->nvdimms_state->is_enabled;
}
static void machine_set_nvdimm(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->nvdimms_state->is_enabled = value;
}
static bool machine_get_spcr(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->acpi_spcr_enabled;
}
static void machine_set_spcr(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->acpi_spcr_enabled = value;
}
static bool machine_get_hmat(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return ms->numa_state->hmat_enabled;
}
static void machine_set_hmat(Object *obj, bool value, Error **errp)
{
MachineState *ms = MACHINE(obj);
ms->numa_state->hmat_enabled = value;
}
static void machine_get_mem(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
MemorySizeConfiguration mem = {
.has_size = true,
.size = ms->ram_size,
.has_max_size = !!ms->ram_slots,
.max_size = ms->maxram_size,
.has_slots = !!ms->ram_slots,
.slots = ms->ram_slots,
};
MemorySizeConfiguration *p_mem = &mem;
visit_type_MemorySizeConfiguration(v, name, &p_mem, &error_abort);
}
static void machine_set_mem(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ERRP_GUARD();
MachineState *ms = MACHINE(obj);
MachineClass *mc = MACHINE_GET_CLASS(obj);
MemorySizeConfiguration *mem;
if (!visit_type_MemorySizeConfiguration(v, name, &mem, errp)) {
return;
}
if (!mem->has_size) {
mem->has_size = true;
mem->size = mc->default_ram_size;
}
mem->size = QEMU_ALIGN_UP(mem->size, 8192);
if ((ram_addr_t)mem->size != mem->size) {
error_setg(errp, "ram size %llu exceeds permitted maximum %llu",
(unsigned long long)mem->size,
(unsigned long long)RAM_ADDR_MAX);
goto out_free;
}
if (mem->has_max_size) {
if ((ram_addr_t)mem->max_size != mem->max_size) {
error_setg(errp, "ram size %llu exceeds permitted maximum %llu",
(unsigned long long)mem->max_size,
(unsigned long long)RAM_ADDR_MAX);
goto out_free;
}
if (mem->max_size < mem->size) {
error_setg(errp, "invalid value of maxmem: "
"maximum memory size (0x%" PRIx64 ") must be at least "
"the initial memory size (0x%" PRIx64 ")",
mem->max_size, mem->size);
goto out_free;
}
if (mem->has_slots && mem->slots && mem->max_size == mem->size) {
error_setg(errp, "invalid value of maxmem: "
"memory slots were specified but maximum memory size "
"(0x%" PRIx64 ") is equal to the initial memory size "
"(0x%" PRIx64 ")", mem->max_size, mem->size);
goto out_free;
}
ms->maxram_size = mem->max_size;
} else {
if (mem->has_slots) {
error_setg(errp, "slots specified but no max-size");
goto out_free;
}
ms->maxram_size = mem->size;
}
ms->ram_size = mem->size;
ms->ram_slots = mem->has_slots ? mem->slots : 0;
out_free:
qapi_free_MemorySizeConfiguration(mem);
}
static char *machine_get_nvdimm_persistence(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->nvdimms_state->persistence_string);
}
static void machine_set_nvdimm_persistence(Object *obj, const char *value,
Error **errp)
{
MachineState *ms = MACHINE(obj);
NVDIMMState *nvdimms_state = ms->nvdimms_state;
if (strcmp(value, "cpu") == 0) {
nvdimms_state->persistence = 3;
} else if (strcmp(value, "mem-ctrl") == 0) {
nvdimms_state->persistence = 2;
} else {
error_setg(errp, "-machine nvdimm-persistence=%s: unsupported option",
value);
return;
}
g_free(nvdimms_state->persistence_string);
nvdimms_state->persistence_string = g_strdup(value);
}
void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
{
QAPI_LIST_PREPEND(mc->allowed_dynamic_sysbus_devices, g_strdup(type));
}
bool device_is_dynamic_sysbus(MachineClass *mc, DeviceState *dev)
{
Object *obj = OBJECT(dev);
if (!object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE)) {
return false;
}
return device_type_is_dynamic_sysbus(mc, object_get_typename(obj));
}
bool device_type_is_dynamic_sysbus(MachineClass *mc, const char *type)
{
bool allowed = false;
strList *wl;
ObjectClass *klass = object_class_by_name(type);
for (wl = mc->allowed_dynamic_sysbus_devices;
!allowed && wl;
wl = wl->next) {
allowed |= !!object_class_dynamic_cast(klass, wl->value);
}
return allowed;
}
static char *machine_get_audiodev(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
return g_strdup(ms->audiodev);
}
static void machine_set_audiodev(Object *obj, const char *value,
Error **errp)
{
MachineState *ms = MACHINE(obj);
if (!audio_be_by_name(value, errp)) {
return;
}
g_free(ms->audiodev);
ms->audiodev = g_strdup(value);
}
HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
{
int i;
HotpluggableCPUList *head = NULL;
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* force board to initialize possible_cpus if it hasn't been done yet */
mc->possible_cpu_arch_ids(machine);
for (i = 0; i < machine->possible_cpus->len; i++) {
CPUState *cpu;
HotpluggableCPU *cpu_item = g_new0(typeof(*cpu_item), 1);
cpu_item->type = g_strdup(machine->possible_cpus->cpus[i].type);
cpu_item->vcpus_count = machine->possible_cpus->cpus[i].vcpus_count;
cpu_item->props = g_memdup(&machine->possible_cpus->cpus[i].props,
sizeof(*cpu_item->props));
cpu = machine->possible_cpus->cpus[i].cpu;
if (cpu) {
cpu_item->qom_path = object_get_canonical_path(OBJECT(cpu));
}
QAPI_LIST_PREPEND(head, cpu_item);
}
return head;
}
/**
* machine_set_cpu_numa_node:
* @machine: machine object to modify
* @props: specifies which cpu objects to assign to
* numa node specified by @props.node_id
* @errp: if an error occurs, a pointer to an area to store the error
*
* Associate NUMA node specified by @props.node_id with cpu slots that
* match socket/core/thread-ids specified by @props. It's recommended to use
* query-hotpluggable-cpus.props values to specify affected cpu slots,
* which would lead to exact 1:1 mapping of cpu slots to NUMA node.
*
* However for CLI convenience it's possible to pass in subset of properties,
* which would affect all cpu slots that match it.
* Ex for pc machine:
* -smp 4,cores=2,sockets=2 -numa node,nodeid=0 -numa node,nodeid=1 \
* -numa cpu,node-id=0,socket_id=0 \
* -numa cpu,node-id=1,socket_id=1
* will assign all child cores of socket 0 to node 0 and
* of socket 1 to node 1.
*
* On attempt of reassigning (already assigned) cpu slot to another NUMA node,
* return error.
* Empty subset is disallowed and function will return with error in this case.
*/
void machine_set_cpu_numa_node(MachineState *machine,
const CpuInstanceProperties *props, Error **errp)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
NodeInfo *numa_info = machine->numa_state->nodes;
bool match = false;
int i;
if (!mc->possible_cpu_arch_ids) {
error_setg(errp, "mapping of CPUs to NUMA node is not supported");
return;
}
/* disabling node mapping is not supported, forbid it */
assert(props->has_node_id);
/* force board to initialize possible_cpus if it hasn't been done yet */
mc->possible_cpu_arch_ids(machine);
for (i = 0; i < machine->possible_cpus->len; i++) {
CPUArchId *slot = &machine->possible_cpus->cpus[i];
/* reject unsupported by board properties */
if (props->has_thread_id && !slot->props.has_thread_id) {
error_setg(errp, "thread-id is not supported");
return;
}
if (props->has_core_id && !slot->props.has_core_id) {
error_setg(errp, "core-id is not supported");
return;
}
if (props->has_module_id && !slot->props.has_module_id) {
error_setg(errp, "module-id is not supported");
return;
}
if (props->has_cluster_id && !slot->props.has_cluster_id) {
error_setg(errp, "cluster-id is not supported");
return;
}
if (props->has_socket_id && !slot->props.has_socket_id) {
error_setg(errp, "socket-id is not supported");
return;
}
if (props->has_die_id && !slot->props.has_die_id) {
error_setg(errp, "die-id is not supported");
return;
}
/* skip slots with explicit mismatch */
if (props->has_thread_id && props->thread_id != slot->props.thread_id) {
continue;
}
if (props->has_core_id && props->core_id != slot->props.core_id) {
continue;
}
if (props->has_module_id &&
props->module_id != slot->props.module_id) {
continue;
}
if (props->has_cluster_id &&
props->cluster_id != slot->props.cluster_id) {
continue;
}
if (props->has_die_id && props->die_id != slot->props.die_id) {
continue;
}
if (props->has_socket_id && props->socket_id != slot->props.socket_id) {
continue;
}
/* reject assignment if slot is already assigned, for compatibility
* of legacy cpu_index mapping with SPAPR core based mapping do not
* error out if cpu thread and matched core have the same node-id */
if (slot->props.has_node_id &&
slot->props.node_id != props->node_id) {
error_setg(errp, "CPU is already assigned to node-id: %" PRId64,
slot->props.node_id);
return;
}
/* assign slot to node as it's matched '-numa cpu' key */
match = true;
slot->props.node_id = props->node_id;
slot->props.has_node_id = props->has_node_id;
if (machine->numa_state->hmat_enabled) {
if ((numa_info[props->node_id].initiator < MAX_NODES) &&
(props->node_id != numa_info[props->node_id].initiator)) {
error_setg(errp, "The initiator of CPU NUMA node %" PRId64
" should be itself (got %" PRIu16 ")",
props->node_id, numa_info[props->node_id].initiator);
return;
}
numa_info[props->node_id].has_cpu = true;
numa_info[props->node_id].initiator = props->node_id;
}
}
if (!match) {
error_setg(errp, "no match found");
}
}
static void machine_get_smp(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
SMPConfiguration *config = &(SMPConfiguration){
.has_cpus = true, .cpus = ms->smp.cpus,
.has_drawers = true, .drawers = ms->smp.drawers,
.has_books = true, .books = ms->smp.books,
.has_sockets = true, .sockets = ms->smp.sockets,
.has_dies = true, .dies = ms->smp.dies,
.has_clusters = true, .clusters = ms->smp.clusters,
.has_modules = true, .modules = ms->smp.modules,
.has_cores = true, .cores = ms->smp.cores,
.has_threads = true, .threads = ms->smp.threads,
.has_maxcpus = true, .maxcpus = ms->smp.max_cpus,
};
if (!visit_type_SMPConfiguration(v, name, &config, &error_abort)) {
return;
}
}
static void machine_set_smp(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_autoptr(SMPConfiguration) config = NULL;
if (!visit_type_SMPConfiguration(v, name, &config, errp)) {
return;
}
machine_parse_smp_config(ms, config, errp);
}
static void machine_get_smp_cache(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
SmpCache *cache = &ms->smp_cache;
SmpCachePropertiesList *head = NULL;
SmpCachePropertiesList **tail = &head;
for (int i = 0; i < CACHE_LEVEL_AND_TYPE__MAX; i++) {
SmpCacheProperties *node = g_new(SmpCacheProperties, 1);
node->cache = cache->props[i].cache;
node->topology = cache->props[i].topology;
QAPI_LIST_APPEND(tail, node);
}
visit_type_SmpCachePropertiesList(v, name, &head, errp);
qapi_free_SmpCachePropertiesList(head);
}
static void machine_set_smp_cache(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
SmpCachePropertiesList *caches;
if (!visit_type_SmpCachePropertiesList(v, name, &caches, errp)) {
return;
}
machine_parse_smp_cache(ms, caches, errp);
qapi_free_SmpCachePropertiesList(caches);
}
static void machine_get_boot(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MachineState *ms = MACHINE(obj);
BootConfiguration *config = &ms->boot_config;
visit_type_BootConfiguration(v, name, &config, &error_abort);
}
static void machine_free_boot_config(MachineState *ms)
{
g_free(ms->boot_config.order);
g_free(ms->boot_config.once);
g_free(ms->boot_config.splash);
}
static void machine_copy_boot_config(MachineState *ms, BootConfiguration *config)
{
MachineClass *machine_class = MACHINE_GET_CLASS(ms);
machine_free_boot_config(ms);
ms->boot_config = *config;
if (!config->order) {
ms->boot_config.order = g_strdup(machine_class->default_boot_order);
}
}
static void machine_set_boot(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ERRP_GUARD();
MachineState *ms = MACHINE(obj);
BootConfiguration *config = NULL;
if (!visit_type_BootConfiguration(v, name, &config, errp)) {
return;
}
if (config->order) {
validate_bootdevices(config->order, errp);
if (*errp) {
goto out_free;
}
}
if (config->once) {
validate_bootdevices(config->once, errp);
if (*errp) {
goto out_free;
}
}
machine_copy_boot_config(ms, config);
/* Strings live in ms->boot_config. */
free(config);
return;
out_free:
qapi_free_BootConfiguration(config);
}
void machine_add_audiodev_property(MachineClass *mc)
{
ObjectClass *oc = OBJECT_CLASS(mc);
object_class_property_add_str(oc, "audiodev",
machine_get_audiodev,
machine_set_audiodev);
object_class_property_set_description(oc, "audiodev",
"Audiodev to use for default machine devices");
}
static bool create_default_memdev(MachineState *ms, const char *path,
Error **errp)
{
Object *obj;
MachineClass *mc = MACHINE_GET_CLASS(ms);
bool r = false;
obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
if (path) {
if (!object_property_set_str(obj, "mem-path", path, errp)) {
goto out;
}
}
if (!object_property_set_int(obj, "size", ms->ram_size, errp)) {
goto out;
}
object_property_add_child(object_get_objects_root(), mc->default_ram_id,
obj);
/* Ensure backend's memory region name is equal to mc->default_ram_id */
if (!object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
false, errp)) {
goto out;
}
if (!user_creatable_complete(USER_CREATABLE(obj), errp)) {
goto out;
}
r = object_property_set_link(OBJECT(ms), "memory-backend", obj, errp);
out:
object_unref(obj);
return r;
}
static void machine_class_init(ObjectClass *oc, const void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
/* Default 128 MB as guest ram size */
mc->default_ram_size = 128 * MiB;
mc->rom_file_has_mr = true;
/*
* SMBIOS 3.1.0 7.18.5 Memory Device — Extended Size
* use max possible value that could be encoded into
* 'Extended Size' field (2047Tb).
*
* Unfortunately (current) Windows Server 2025 and earlier do not handle
* 4Tb+ DIMM size.
*/
mc->smbios_memory_device_size = 2 * TiB;
/* numa node memory size aligned on 8MB by default.
* On Linux, each node's border has to be 8MB aligned
*/
mc->numa_mem_align_shift = 23;
mc->create_default_memdev = create_default_memdev;
object_class_property_add_str(oc, "kernel",
machine_get_kernel, machine_set_kernel);
object_class_property_set_description(oc, "kernel",
"Linux kernel image file");
object_class_property_add_str(oc, "shim",
machine_get_shim, machine_set_shim);
object_class_property_set_description(oc, "shim",
"shim.efi file");
object_class_property_add_str(oc, "initrd",
machine_get_initrd, machine_set_initrd);
object_class_property_set_description(oc, "initrd",
"Linux initial ramdisk file");
object_class_property_add_str(oc, "append",
machine_get_append, machine_set_append);
object_class_property_set_description(oc, "append",
"Linux kernel command line");
object_class_property_add_str(oc, "dtb",
machine_get_dtb, machine_set_dtb);
object_class_property_set_description(oc, "dtb",
"Linux kernel device tree file");
object_class_property_add_str(oc, "dumpdtb",
machine_get_dumpdtb, machine_set_dumpdtb);
object_class_property_set_description(oc, "dumpdtb",
"Dump current dtb to a file and quit");
object_class_property_add(oc, "boot", "BootConfiguration",
machine_get_boot, machine_set_boot,
NULL, NULL);
object_class_property_set_description(oc, "boot",
"Boot configuration");
object_class_property_add(oc, "smp", "SMPConfiguration",
machine_get_smp, machine_set_smp,
NULL, NULL);
object_class_property_set_description(oc, "smp",
"CPU topology");
object_class_property_add(oc, "smp-cache", "SmpCachePropertiesWrapper",
machine_get_smp_cache, machine_set_smp_cache, NULL, NULL);
object_class_property_set_description(oc, "smp-cache",
"Cache properties list for SMP machine");
object_class_property_add(oc, "phandle-start", "int",
machine_get_phandle_start, machine_set_phandle_start,
NULL, NULL);
object_class_property_set_description(oc, "phandle-start",
"The first phandle ID we may generate dynamically");
object_class_property_add_str(oc, "dt-compatible",
machine_get_dt_compatible, machine_set_dt_compatible);
object_class_property_set_description(oc, "dt-compatible",
"Overrides the \"compatible\" property of the dt root node");
object_class_property_add_bool(oc, "dump-guest-core",
machine_get_dump_guest_core, machine_set_dump_guest_core);
object_class_property_set_description(oc, "dump-guest-core",
"Include guest memory in a core dump");
object_class_property_add_bool(oc, "x-change-vmfd-on-reset",
machine_get_new_accel_vmfd_on_reset,
machine_set_new_accel_vmfd_on_reset);
object_class_property_set_description(oc, "x-change-vmfd-on-reset",
"Set on/off to enable/disable generating new accelerator guest handle "
"on guest reset. Default: off (used only for testing/debugging).");
object_class_property_add_bool(oc, "mem-merge",
machine_get_mem_merge, machine_set_mem_merge);
object_class_property_set_description(oc, "mem-merge",
"Enable/disable memory merge support");
#ifdef CONFIG_POSIX
object_class_property_add_bool(oc, "aux-ram-share",
machine_get_aux_ram_share,
machine_set_aux_ram_share);
object_class_property_set_description(oc, "aux-ram-share",
"Use anonymous shared memory for auxiliary guest RAMs");
#endif
object_class_property_add_bool(oc, "usb",
machine_get_usb, machine_set_usb);
object_class_property_set_description(oc, "usb",
"Set on/off to enable/disable usb");
object_class_property_add_bool(oc, "graphics",
machine_get_graphics, machine_set_graphics);
object_class_property_set_description(oc, "graphics",
"Set on/off to enable/disable graphics emulation");
object_class_property_add_str(oc, "firmware",
machine_get_firmware, machine_set_firmware);
object_class_property_set_description(oc, "firmware",
"Firmware image");
object_class_property_add_bool(oc, "suppress-vmdesc",
machine_get_suppress_vmdesc, machine_set_suppress_vmdesc);
object_class_property_set_description(oc, "suppress-vmdesc",
"Set on to disable self-describing migration");
object_class_property_add_link(oc, "confidential-guest-support",
TYPE_CONFIDENTIAL_GUEST_SUPPORT,
offsetof(MachineState, cgs),
machine_check_confidential_guest_support,
OBJ_PROP_LINK_STRONG);
object_class_property_set_description(oc, "confidential-guest-support",
"Set confidential guest scheme to support");
/* For compatibility */
object_class_property_add_str(oc, "memory-encryption",
machine_get_memory_encryption, machine_set_memory_encryption);
object_class_property_set_description(oc, "memory-encryption",
"Set memory encryption object to use");
object_class_property_add_link(oc, "memory-backend", TYPE_MEMORY_BACKEND,
offsetof(MachineState, memdev), object_property_allow_set_link,
OBJ_PROP_LINK_STRONG);
object_class_property_set_description(oc, "memory-backend",
"Set RAM backend"
"Valid value is ID of hostmem based backend");
object_class_property_add(oc, "memory", "MemorySizeConfiguration",
machine_get_mem, machine_set_mem,
NULL, NULL);
object_class_property_set_description(oc, "memory",
"Memory size configuration");
}
static void machine_class_base_init(ObjectClass *oc, const void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->max_cpus = mc->max_cpus ?: 1;
mc->min_cpus = mc->min_cpus ?: 1;
mc->default_cpus = mc->default_cpus ?: 1;
if (!object_class_is_abstract(oc)) {
const char *cname = object_class_get_name(oc);
assert(g_str_has_suffix(cname, TYPE_MACHINE_SUFFIX));
mc->name = g_strndup(cname,
strlen(cname) - strlen(TYPE_MACHINE_SUFFIX));
mc->compat_props = g_ptr_array_new();
}
}
static void machine_initfn(Object *obj)
{
MachineState *ms = MACHINE(obj);
MachineClass *mc = MACHINE_GET_CLASS(obj);
ms->dump_guest_core = true;
ms->mem_merge = (QEMU_MADV_MERGEABLE != QEMU_MADV_INVALID);
ms->enable_graphics = true;
ms->kernel_cmdline = g_strdup("");
ms->ram_size = mc->default_ram_size;
ms->maxram_size = mc->default_ram_size;
if (mc->nvdimm_supported) {
ms->nvdimms_state = g_new0(NVDIMMState, 1);
object_property_add_bool(obj, "nvdimm",
machine_get_nvdimm, machine_set_nvdimm);
object_property_set_description(obj, "nvdimm",
"Set on/off to enable/disable "
"NVDIMM instantiation");
object_property_add_str(obj, "nvdimm-persistence",
machine_get_nvdimm_persistence,
machine_set_nvdimm_persistence);
object_property_set_description(obj, "nvdimm-persistence",
"Set NVDIMM persistence"
"Valid values are cpu, mem-ctrl");
}
if (mc->cpu_index_to_instance_props && mc->get_default_cpu_node_id) {
ms->numa_state = g_new0(NumaState, 1);
object_property_add_bool(obj, "hmat",
machine_get_hmat, machine_set_hmat);
object_property_set_description(obj, "hmat",
"Set on/off to enable/disable "
"ACPI Heterogeneous Memory Attribute "
"Table (HMAT)");
}
/* SPCR */
ms->acpi_spcr_enabled = true;
object_property_add_bool(obj, "spcr", machine_get_spcr, machine_set_spcr);
object_property_set_description(obj, "spcr",
"Set on/off to enable/disable "
"ACPI Serial Port Console Redirection "
"Table (spcr)");
/* default to mc->default_cpus */
ms->smp.cpus = mc->default_cpus;
ms->smp.max_cpus = mc->default_cpus;
ms->smp.drawers = 1;
ms->smp.books = 1;
ms->smp.sockets = 1;
ms->smp.dies = 1;
ms->smp.clusters = 1;
ms->smp.modules = 1;
ms->smp.cores = 1;
ms->smp.threads = 1;
for (int i = 0; i < CACHE_LEVEL_AND_TYPE__MAX; i++) {
ms->smp_cache.props[i].cache = (CacheLevelAndType)i;
ms->smp_cache.props[i].topology = CPU_TOPOLOGY_LEVEL_DEFAULT;
}
machine_copy_boot_config(ms, &(BootConfiguration){ 0 });
}
static void machine_finalize(Object *obj)
{
MachineState *ms = MACHINE(obj);
machine_free_boot_config(ms);
g_free(ms->shim_filename);
g_free(ms->kernel_filename);
g_free(ms->initrd_filename);
g_free(ms->kernel_cmdline);
g_free(ms->dtb);
g_free(ms->dumpdtb);
g_free(ms->dt_compatible);
g_free(ms->firmware);
g_free(ms->device_memory);
g_free(ms->nvdimms_state);
g_free(ms->numa_state);
g_free(ms->audiodev);
g_free(ms->fdt);
}
bool machine_usb(MachineState *machine)
{
return machine->usb;
}
int machine_phandle_start(MachineState *machine)
{
return machine->phandle_start;
}
bool machine_dump_guest_core(MachineState *machine)
{
return machine->dump_guest_core;
}
bool machine_mem_merge(MachineState *machine)
{
return machine->mem_merge;
}
bool machine_require_guest_memfd_private(MachineState *machine)
{
return machine->cgs && machine->cgs->require_guest_memfd;
}
static char *cpu_slot_to_string(const CPUArchId *cpu)
{
GString *s = g_string_new(NULL);
if (cpu->props.has_socket_id) {
g_string_append_printf(s, "socket-id: %"PRId64, cpu->props.socket_id);
}
if (cpu->props.has_die_id) {
if (s->len) {
g_string_append_printf(s, ", ");
}
g_string_append_printf(s, "die-id: %"PRId64, cpu->props.die_id);
}
if (cpu->props.has_cluster_id) {
if (s->len) {
g_string_append_printf(s, ", ");
}
g_string_append_printf(s, "cluster-id: %"PRId64, cpu->props.cluster_id);
}
if (cpu->props.has_module_id) {
if (s->len) {
g_string_append_printf(s, ", ");
}
g_string_append_printf(s, "module-id: %"PRId64, cpu->props.module_id);
}
if (cpu->props.has_core_id) {
if (s->len) {
g_string_append_printf(s, ", ");
}
g_string_append_printf(s, "core-id: %"PRId64, cpu->props.core_id);
}
if (cpu->props.has_thread_id) {
if (s->len) {
g_string_append_printf(s, ", ");
}
g_string_append_printf(s, "thread-id: %"PRId64, cpu->props.thread_id);
}
return g_string_free(s, false);
}
static void numa_validate_initiator(NumaState *numa_state)
{
int i;
NodeInfo *numa_info = numa_state->nodes;
for (i = 0; i < numa_state->num_nodes; i++) {
if (numa_info[i].initiator == MAX_NODES) {
continue;
}
if (!numa_info[numa_info[i].initiator].present) {
error_report("NUMA node %" PRIu16 " is missing, use "
"'-numa node' option to declare it first",
numa_info[i].initiator);
exit(1);
}
if (!numa_info[numa_info[i].initiator].has_cpu) {
error_report("The initiator of NUMA node %d is invalid", i);
exit(1);
}
}
}
static void machine_numa_finish_cpu_init(MachineState *machine)
{
int i;
bool default_mapping;
GString *s = g_string_new(NULL);
MachineClass *mc = MACHINE_GET_CLASS(machine);
const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(machine);
assert(machine->numa_state->num_nodes);
for (i = 0; i < possible_cpus->len; i++) {
if (possible_cpus->cpus[i].props.has_node_id) {
break;
}
}
default_mapping = (i == possible_cpus->len);
for (i = 0; i < possible_cpus->len; i++) {
const CPUArchId *cpu_slot = &possible_cpus->cpus[i];
if (!cpu_slot->props.has_node_id) {
/* fetch default mapping from board and enable it */
CpuInstanceProperties props = cpu_slot->props;
props.node_id = mc->get_default_cpu_node_id(machine, i);
if (!default_mapping) {
/* record slots with not set mapping,
* TODO: make it hard error in future */
char *cpu_str = cpu_slot_to_string(cpu_slot);
g_string_append_printf(s, "%sCPU %d [%s]",
s->len ? ", " : "", i, cpu_str);
g_free(cpu_str);
/* non mapped cpus used to fallback to node 0 */
props.node_id = 0;
}
props.has_node_id = true;
machine_set_cpu_numa_node(machine, &props, &error_fatal);
}
}
if (machine->numa_state->hmat_enabled) {
numa_validate_initiator(machine->numa_state);
}
if (s->len && !qtest_enabled()) {
warn_report("CPU(s) not present in any NUMA nodes: %s",
s->str);
warn_report("All CPU(s) up to maxcpus should be described "
"in NUMA config, ability to start up with partial NUMA "
"mappings is obsoleted and will be removed in future");
}
g_string_free(s, true);
}
static void validate_cpu_cluster_to_numa_boundary(MachineState *ms)
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
NumaState *state = ms->numa_state;
const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
const CPUArchId *cpus = possible_cpus->cpus;
int i, j;
if (qtest_enabled() || state->num_nodes <= 1 || possible_cpus->len <= 1) {
return;
}
/*
* The Linux scheduling domain can't be parsed when the multiple CPUs
* in one cluster have been associated with different NUMA nodes. However,
* it's fine to associate one NUMA node with CPUs in different clusters.
*/
for (i = 0; i < possible_cpus->len; i++) {
for (j = i + 1; j < possible_cpus->len; j++) {
if (cpus[i].props.has_socket_id &&
cpus[i].props.has_cluster_id &&
cpus[i].props.has_node_id &&
cpus[j].props.has_socket_id &&
cpus[j].props.has_cluster_id &&
cpus[j].props.has_node_id &&
cpus[i].props.socket_id == cpus[j].props.socket_id &&
cpus[i].props.cluster_id == cpus[j].props.cluster_id &&
cpus[i].props.node_id != cpus[j].props.node_id) {
warn_report("CPU-%d and CPU-%d in socket-%" PRId64 "-cluster-%" PRId64
" have been associated with node-%" PRId64 " and node-%" PRId64
" respectively. It can cause OSes like Linux to"
" misbehave", i, j, cpus[i].props.socket_id,
cpus[i].props.cluster_id, cpus[i].props.node_id,
cpus[j].props.node_id);
}
}
}
}
MemoryRegion *machine_consume_memdev(MachineState *machine,
HostMemoryBackend *backend)
{
MemoryRegion *ret = host_memory_backend_get_memory(backend);
if (host_memory_backend_is_mapped(backend)) {
error_report("memory backend %s can't be used multiple times.",
object_get_canonical_path_component(OBJECT(backend)));
exit(EXIT_FAILURE);
}
host_memory_backend_set_mapped(backend, true);
vmstate_register_ram_global(ret);
return ret;
}
const char *machine_class_default_cpu_type(MachineClass *mc)
{
if (mc->valid_cpu_types && !mc->valid_cpu_types[1]) {
/* Only a single CPU type allowed: use it as default. */
return mc->valid_cpu_types[0];
}
return mc->default_cpu_type;
}
const char *machine_default_cpu_type(const MachineState *ms)
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
if (mc->get_default_cpu_type) {
return mc->get_default_cpu_type(ms);
}
return machine_class_default_cpu_type(mc);
}
static bool is_cpu_type_supported(const MachineState *machine, Error **errp)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
ObjectClass *oc = object_class_by_name(machine->cpu_type);
CPUClass *cc;
int i;
/*
* Check if the user specified CPU type is supported when the valid
* CPU types have been determined. Note that the user specified CPU
* type is provided through '-cpu' option.
*/
if (mc->valid_cpu_types) {
assert(mc->valid_cpu_types[0] != NULL);
assert(!mc->get_valid_cpu_types);
for (i = 0; mc->valid_cpu_types[i]; i++) {
if (object_class_dynamic_cast(oc, mc->valid_cpu_types[i])) {
break;
}
}
/* The user specified CPU type isn't valid */
if (!mc->valid_cpu_types[i]) {
g_autofree char *requested = cpu_model_from_type(machine->cpu_type);
error_setg(errp, "Invalid CPU model: %s", requested);
if (!mc->valid_cpu_types[1]) {
g_autofree char *model = cpu_model_from_type(
mc->valid_cpu_types[0]);
error_append_hint(errp, "The only valid type is: %s\n", model);
} else {
error_append_hint(errp, "The valid models are: ");
for (i = 0; mc->valid_cpu_types[i]; i++) {
g_autofree char *model = cpu_model_from_type(
mc->valid_cpu_types[i]);
error_append_hint(errp, "%s%s",
model,
mc->valid_cpu_types[i + 1] ? ", " : "");
}
error_append_hint(errp, "\n");
}
return false;
}
} else if (mc->get_valid_cpu_types) {
GPtrArray *vct = mc->get_valid_cpu_types(machine);
bool valid = false;
for (i = 0; i < vct->len; i++) {
if (object_class_dynamic_cast(oc, vct->pdata[i])) {
valid = true;
break;
}
}
if (!valid) {
g_autofree char *requested = cpu_model_from_type(machine->cpu_type);
error_setg(errp, "Invalid CPU model: %s", requested);
error_append_hint(errp, "The valid models are: ");
for (i = 0; i < vct->len; i++) {
g_autofree char *model = cpu_model_from_type(vct->pdata[i]);
error_append_hint(errp, "%s%s",
model, i + 1 == vct->len ? "\n" : ", ");
}
}
g_ptr_array_free(vct, true);
if (!valid) {
return false;
}
}
/* Check if CPU type is deprecated and warn if so */
cc = CPU_CLASS(oc);
assert(cc != NULL);
if (cc->deprecation_note) {
warn_report("CPU model %s is deprecated -- %s",
machine->cpu_type, cc->deprecation_note);
}
return true;
}
void machine_run_board_init(MachineState *machine, const char *mem_path, Error **errp)
{
ERRP_GUARD();
MachineClass *machine_class = MACHINE_GET_CLASS(machine);
/* This checkpoint is required by replay to separate prior clock
reading from the other reads, because timer polling functions query
clock values from the log. */
replay_checkpoint(CHECKPOINT_INIT);
if (machine->memdev) {
ram_addr_t backend_size = object_property_get_uint(OBJECT(machine->memdev),
"size", &error_abort);
if (backend_size != machine->ram_size) {
error_setg(errp, "Machine memory size does not match the size of the memory backend");
return;
}
} else if (machine_class->default_ram_id && machine->ram_size &&
numa_uses_legacy_mem()) {
if (object_property_find(object_get_objects_root(),
machine_class->default_ram_id)) {
error_setg(errp, "object's id '%s' is reserved for the default"
" RAM backend, it can't be used for any other purposes",
machine_class->default_ram_id);
error_append_hint(errp,
"Change the object's 'id' to something else or disable"
" automatic creation of the default RAM backend by setting"
" 'memory-backend=%s' with '-machine'.\n",
machine_class->default_ram_id);
return;
}
if (!machine_class->create_default_memdev(current_machine, mem_path,
errp)) {
return;
}
}
if (machine->numa_state) {
numa_complete_configuration(machine);
if (machine->numa_state->num_nodes) {
machine_numa_finish_cpu_init(machine);
if (machine_class->cpu_cluster_has_numa_boundary) {
validate_cpu_cluster_to_numa_boundary(machine);
}
}
}
if (!machine->ram && machine->memdev) {
machine->ram = machine_consume_memdev(machine, machine->memdev);
}
/* Check if the CPU type is supported */
if (machine->cpu_type && !is_cpu_type_supported(machine, errp)) {
return;
}
if (machine->cgs) {
/*
* With confidential guests, the host can't see the real
* contents of RAM, so there's no point in it trying to merge
* areas.
*/
machine_set_mem_merge(OBJECT(machine), false, &error_abort);
/*
* Virtio devices can't count on directly accessing guest
* memory, so they need iommu_platform=on to use normal DMA
* mechanisms. That requires also disabling legacy virtio
* support for those virtio pci devices which allow it.
*/
object_register_sugar_prop(TYPE_VIRTIO_PCI, "disable-legacy",
"on", true);
object_register_sugar_prop(TYPE_VIRTIO_DEVICE, "iommu_platform",
"on", false);
}
accel_init_interfaces(ACCEL_GET_CLASS(machine->accelerator));
machine_class->init(machine);
phase_advance(PHASE_MACHINE_INITIALIZED);
}
static NotifierList machine_init_done_notifiers =
NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
void qemu_add_machine_init_done_notifier(Notifier *notify)
{
notifier_list_add(&machine_init_done_notifiers, notify);
if (phase_check(PHASE_MACHINE_READY)) {
notify->notify(notify, NULL);
}
}
void qemu_remove_machine_init_done_notifier(Notifier *notify)
{
notifier_remove(notify);
}
static void handle_machine_dumpdtb(MachineState *ms)
{
if (!ms->dumpdtb) {
return;
}
#ifdef CONFIG_FDT
qmp_dumpdtb(ms->dumpdtb, &error_fatal);
exit(0);
#else
error_report("This machine doesn't have an FDT");
error_printf("(this machine type definitely doesn't use FDT, and "
"this QEMU doesn't have FDT support compiled in)\n");
exit(1);
#endif
}
void qdev_machine_creation_done(void)
{
cpu_synchronize_all_post_init();
if (current_machine->boot_config.once) {
qemu_boot_set(current_machine->boot_config.once, &error_fatal);
qemu_register_reset(restore_boot_order, g_strdup(current_machine->boot_config.order));
}
/*
* ok, initial machine setup is done, starting from now we can
* only create hotpluggable devices
*/
phase_advance(PHASE_MACHINE_READY);
qdev_assert_realized_properly();
/* TODO: once all bus devices are qdevified, this should be done
* when bus is created by qdev.c */
/*
* This is where we arrange for the sysbus to be reset when the
* whole simulation is reset. In turn, resetting the sysbus will cause
* all devices hanging off it (and all their child buses, recursively)
* to be reset. Note that this will *not* reset any Device objects
* which are not attached to some part of the qbus tree!
*/
qemu_register_resettable(OBJECT(sysbus_get_default()));
notifier_list_notify(&machine_init_done_notifiers, NULL);
/*
* If the user used -machine dumpdtb=file.dtb to request that we
* dump the DTB to a file, do it now, and exit.
*/
handle_machine_dumpdtb(current_machine);
if (rom_check_and_register_reset() != 0) {
exit(1);
}
replay_start();
/* This checkpoint is required by replay to separate prior clock
reading from the other reads, because timer polling functions query
clock values from the log. */
replay_checkpoint(CHECKPOINT_RESET);
qemu_system_reset(SHUTDOWN_CAUSE_NONE);
register_global_state();
}
static const TypeInfo machine_info = {
.name = TYPE_MACHINE,
.parent = TYPE_OBJECT,
.abstract = true,
.class_size = sizeof(MachineClass),
.class_init = machine_class_init,
.class_base_init = machine_class_base_init,
.instance_size = sizeof(MachineState),
.instance_init = machine_initfn,
.instance_finalize = machine_finalize,
};
static void machine_register_types(void)
{
type_register_static(&machine_info);
}
type_init(machine_register_types)