diff mbox series

[v4,19/21] pc/q35: set SMBIOS entry point type to 'auto' by default

Message ID 20240314152302.2324164-20-imammedo@redhat.com
State New
Headers show
Series Workaround Windows failing to find 64bit SMBIOS entry point with SeaBIOS | expand

Commit Message

Igor Mammedov March 14, 2024, 3:23 p.m. UTC 
Use smbios-entry-point-type='auto' for newer machine types as a workaround
for Windows not detecting SMBIOS tables. Which makes QEMU pick SMBIOS tables
based on configuration (with 2.x preferred and fallback to 3.x if the former
isn't compatible with configuration)

Default compat setting of smbios-entry-point-type after series
for pc/q35 machines:
  * 9.0-newer: 'auto'
  * 8.1-8.2: '64'
  * 8.0-older: '32'

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2008
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
---
 hw/i386/pc.c      | 2 +-
 hw/i386/pc_piix.c | 4 ++++
 hw/i386/pc_q35.c  | 3 +++
 3 files changed, 8 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 44eb073abd..e80f02bef4 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1832,7 +1832,7 @@  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;
+    pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_AUTO;
 
     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 c9a6c0aa68..18ba076609 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -525,12 +525,16 @@  DEFINE_I440FX_MACHINE(v9_0, "pc-i440fx-9.0", NULL,
 
 static void pc_i440fx_8_2_machine_options(MachineClass *m)
 {
+    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+
     pc_i440fx_9_0_machine_options(m);
     m->alias = NULL;
     m->is_default = false;
 
     compat_props_add(m->compat_props, hw_compat_8_2, hw_compat_8_2_len);
     compat_props_add(m->compat_props, pc_compat_8_2, pc_compat_8_2_len);
+    /* For pc-i44fx-8.2 and 8.1, use SMBIOS 3.X by default */
+    pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_64;
 }
 
 DEFINE_I440FX_MACHINE(v8_2, "pc-i440fx-8.2", NULL,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 8a427c4647..b5922b44af 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -376,11 +376,14 @@  DEFINE_Q35_MACHINE(v9_0, "pc-q35-9.0", NULL,
 
 static void pc_q35_8_2_machine_options(MachineClass *m)
 {
+    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_9_0_machine_options(m);
     m->alias = NULL;
     m->max_cpus = 1024;
     compat_props_add(m->compat_props, hw_compat_8_2, hw_compat_8_2_len);
     compat_props_add(m->compat_props, pc_compat_8_2, pc_compat_8_2_len);
+    /* For pc-q35-8.2 and 8.1, use SMBIOS 3.X by default */
+    pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_64;
 }
 
 DEFINE_Q35_MACHINE(v8_2, "pc-q35-8.2", NULL,