Currently, pc-q35 and pc-i44fx machine models are default to use SMBIOS 2.8 (32-bit entry point). Since SMBIOS 3.0 (64-bit entry point) is now fully supported since QEMU 7.0, default to use SMBIOS 3.0 for newer machine models. This is necessary to avoid the following message when launching a VM with large number of vcpus.
"SMBIOS 2.1 table length 66822 exceeds 65535" Note that user can still override the entry point tyme w/ QEMU option "-M ..., smbios-entry-point-type=[32|64]. Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> --- hw/i386/pc.c | 14 +++++++++++++- hw/i386/pc_piix.c | 5 +++++ hw/i386/pc_q35.c | 5 +++++ include/hw/i386/pc.h | 2 ++ 4 files changed, 25 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 8fc34f5454..5a87b82185 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -786,6 +786,14 @@ void pc_machine_done(Notifier *notifier, void *data) if (pcmc->smbios_defaults) { MachineClass *mc = MACHINE_GET_CLASS(pcms); + /* + * Check if user has specified a command line option + * to override the SMBIOS default entry point type. + */ + if (!pcms->smbios_use_cmdline_ep_type) { + pcms->smbios_entry_point_type = pcmc->default_smbios_ep_type; + } + /* These values are guest ABI, do not change */ smbios_set_defaults("QEMU", mc->desc, mc->name, pcmc->smbios_legacy_mode, @@ -1782,7 +1790,10 @@ static void pc_machine_set_smbios_ep(Object *obj, Visitor *v, const char *name, { PCMachineState *pcms = PC_MACHINE(obj); - visit_type_SmbiosEntryPointType(v, name, &pcms->smbios_entry_point_type, errp); + pcms->smbios_use_cmdline_ep_type = + visit_type_SmbiosEntryPointType(v, name, + &pcms->smbios_entry_point_type, + errp); } static void pc_machine_get_max_ram_below_4g(Object *obj, Visitor *v, @@ -1992,6 +2003,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) mc->nvdimm_supported = true; mc->smp_props.dies_supported = true; mc->default_ram_id = "pc.ram"; + pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_64; object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size", pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g, diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index da6ba4eeb4..1a2bb25c75 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -467,11 +467,16 @@ DEFINE_I440FX_MACHINE(v8_1, "pc-i440fx-8.1", NULL, static void pc_i440fx_8_0_machine_options(MachineClass *m) { + PCMachineClass *pcmc = PC_MACHINE_CLASS(m); + pc_i440fx_8_1_machine_options(m); m->alias = NULL; m->is_default = false; compat_props_add(m->compat_props, hw_compat_8_0, hw_compat_8_0_len); compat_props_add(m->compat_props, pc_compat_8_0, pc_compat_8_0_len); + + /* For pc-i44fx-8.0 and older, use SMBIOS 2.8 by default */ + pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_32; } DEFINE_I440FX_MACHINE(v8_0, "pc-i440fx-8.0", NULL, diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index a58cd1d3ea..371cca7484 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -379,10 +379,15 @@ DEFINE_Q35_MACHINE(v8_1, "pc-q35-8.1", NULL, static void pc_q35_8_0_machine_options(MachineClass *m) { + PCMachineClass *pcmc = PC_MACHINE_CLASS(m); + pc_q35_8_1_machine_options(m); m->alias = NULL; compat_props_add(m->compat_props, hw_compat_8_0, hw_compat_8_0_len); compat_props_add(m->compat_props, pc_compat_8_0, pc_compat_8_0_len); + + /* For pc-q35-8.0 and older, use SMBIOS 2.8 by default */ + pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_32; } DEFINE_Q35_MACHINE(v8_0, "pc-q35-8.0", NULL, diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index c661e9cc80..f754da5a38 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -50,6 +50,7 @@ typedef struct PCMachineState { bool i8042_enabled; bool default_bus_bypass_iommu; uint64_t max_fw_size; + bool smbios_use_cmdline_ep_type; /* ACPI Memory hotplug IO base address */ hwaddr memhp_io_base; @@ -110,6 +111,7 @@ struct PCMachineClass { bool smbios_defaults; bool smbios_legacy_mode; bool smbios_uuid_encoded; + SmbiosEntryPointType default_smbios_ep_type; /* RAM / address space compat: */ bool gigabyte_align; -- 2.34.1