qemu-spoof: scrub device ACPI _HIDs (vmgenid / pvpanic / fw_cfg)

vmgenid: _HID QEMUVGID -> MSFT0002 when vmgenid policy = mask. pvpanic: omit the
QEMU0001 _HID node when spoof_pvpanic_hide(). fw_cfg: _HID QEMU0002 ->
spoof_fwcfg_acpi_devid(). Inert unless a spoof-seed is set.
diff --git a/hw/acpi/vmgenid.c b/hw/acpi/vmgenid.c
index 70ad029..7f95d79 100644
--- a/hw/acpi/vmgenid.c
+++ b/hw/acpi/vmgenid.c
@@ -11,6 +11,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "hw/misc/spoof.h"
 #include "qapi/error.h"
 #include "qemu/module.h"
 #include "hw/acpi/acpi.h"
@@ -53,7 +54,8 @@ void vmgenid_build_acpi(VmGenIdState *vms, GArray *table_data, GArray *guid,
         build_append_named_dword(ssdt->buf, "VGIA");
     scope = aml_scope("\\_SB");
     dev = aml_device("VGEN");
-    aml_append(dev, aml_name_decl("_HID", aml_string("QEMUVGID")));
+    aml_append(dev, aml_name_decl("_HID", aml_string("%s",
+        spoof_vmgenid_policy() == SPOOF_VGID_MASK ? "MSFT0002" : "QEMUVGID")));
     aml_append(dev, aml_name_decl("_CID", aml_string("VM_Gen_Counter")));
     aml_append(dev, aml_name_decl("_DDN", aml_string("VM_Gen_Counter")));
 
diff --git a/hw/misc/pvpanic-isa.c b/hw/misc/pvpanic-isa.c
index 85fb7da..4b6854e 100644
--- a/hw/misc/pvpanic-isa.c
+++ b/hw/misc/pvpanic-isa.c
@@ -13,6 +13,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "hw/misc/spoof.h"
 #include "qemu/module.h"
 #include "system/runstate.h"
 
@@ -69,6 +70,10 @@ static void build_pvpanic_isa_aml(AcpiDevAmlIf *adev, Aml *scope)
     PVPanicISAState *s = PVPANIC_ISA_DEVICE(adev);
     Aml *dev = aml_device("PEVT");
 
+    if (spoof_pvpanic_hide()) {            /* qemu-spoof: omit the QEMU0001 _HID node */
+        return;
+    }
+
     aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
 
     crs = aml_resource_template();
diff --git a/hw/nvram/fw_cfg-acpi.c b/hw/nvram/fw_cfg-acpi.c
index 2e6ef89..8bb7be7 100644
--- a/hw/nvram/fw_cfg-acpi.c
+++ b/hw/nvram/fw_cfg-acpi.c
@@ -5,13 +5,14 @@
  */
 
 #include "qemu/osdep.h"
+#include "hw/misc/spoof.h"
 #include "hw/nvram/fw_cfg_acpi.h"
 #include "hw/acpi/aml-build.h"
 
 void fw_cfg_acpi_dsdt_add(Aml *scope, const MemMapEntry *fw_cfg_memmap)
 {
     Aml *dev = aml_device("FWCF");
-    aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
+    aml_append(dev, aml_name_decl("_HID", aml_string("%s", spoof_fwcfg_acpi_devid("QEMU0002"))));
     /* device present, functioning, decoding, not shown in UI */
     aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
     aml_append(dev, aml_name_decl("_CCA", aml_int(1)));