diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 31a5f6f4a5..442b4629a9 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1277,7 +1277,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
         dev = aml_device("PCI0");
         aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
         aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
-        aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+        aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid)));
         aml_append(sb_scope, dev);
         aml_append(dsdt, sb_scope);
 
@@ -1296,7 +1296,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
         aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
         aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
         aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
-        aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+        aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid)));
         aml_append(dev, build_q35_osc_method());
         aml_append(sb_scope, dev);
         if (mcfg_valid) {
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 2904b40163..46cc951073 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -405,6 +405,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pcmc->default_nic_model = "e1000";
+    pcmc->pci_root_uid = 0;
 
     m->family = "pc_piix";
     m->desc = "Standard PC (i440FX + PIIX, 1996)";
@@ -448,6 +449,7 @@ static void pc_i440fx_5_1_machine_options(MachineClass *m)
     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
     pcmc->kvmclock_create_always = false;
+    pcmc->pci_root_uid = 1;
 }
 
 DEFINE_I440FX_MACHINE(v5_1, "pc-i440fx-5.1", NULL,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 0a212443aa..53450190f5 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -329,6 +329,7 @@ static void pc_q35_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pcmc->default_nic_model = "e1000e";
+    pcmc->pci_root_uid = 0;
 
     m->family = "pc_q35";
     m->desc = "Standard PC (Q35 + ICH9, 2009)";
@@ -375,6 +376,7 @@ static void pc_q35_5_1_machine_options(MachineClass *m)
     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
     pcmc->kvmclock_create_always = false;
+    pcmc->pci_root_uid = 1;
 }
 
 DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index c9d194a5e7..d4c3d73c11 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -105,6 +105,7 @@ struct PCMachineClass {
     int legacy_acpi_table_size;
     unsigned acpi_data_size;
     bool do_not_add_smb_acpi;
+    int pci_root_uid;
 
     /* SMBIOS compat: */
     bool smbios_defaults;