Index: OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatformDxe.inf
===================================================================
--- OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatformDxe.inf
+++ OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatformDxe.inf
@@ -43,6 +43,7 @@
   MemoryAllocationLib
   OrderedCollectionLib
   PcdLib
+  QemuFwCfgLib
   UefiBootServicesTableLib
   UefiDriverEntryPoint
   UefiLib
Index: OvmfPkg/Bhyve/AcpiPlatformDxe/Bhyve.c
===================================================================
--- OvmfPkg/Bhyve/AcpiPlatformDxe/Bhyve.c
+++ OvmfPkg/Bhyve/AcpiPlatformDxe/Bhyve.c
@@ -11,6 +11,42 @@
 #include <Library/BaseMemoryLib.h>
 #include <Library/BhyveFwCtlLib.h>
 #include <Library/MemoryAllocationLib.h>
+#include <Library/QemuFwCfgLib.h>             // QemuFwCfgFindFile()
+
+STATIC
+EFI_STATUS
+EFIAPI
+BhyveGetCpuCount (
+  OUT UINT32 *CpuCount
+  )
+{
+  FIRMWARE_CONFIG_ITEM Item;
+  UINTN Size;
+
+  if (QemuFwCfgIsAvailable ()) {
+    if (EFI_ERROR (QemuFwCfgFindFile ("opt/bhyve/hw.ncpu", &Item, &Size))) {
+      return EFI_NOT_FOUND;
+    }
+    if (Size != sizeof (*CpuCount)) {
+      return EFI_BAD_BUFFER_SIZE;
+    }
+
+    QemuFwCfgSelectItem (Item);
+    QemuFwCfgReadBytes (Size, CpuCount);
+
+    return EFI_SUCCESS;
+  }
+
+  //
+  // QemuFwCfg not available, try BhyveFwCtl
+  //
+  Size = sizeof (*CpuCount);
+  if (BhyveFwCtlGet ("hw.ncpu", CpuCount, &Size) == RETURN_SUCCESS) {
+    return EFI_SUCCESS;
+  }
+
+  return EFI_UNSUPPORTED;
+}
 
 STATIC
 EFI_STATUS
@@ -23,7 +59,6 @@
   )
 {
   UINT32                                               CpuCount;
-  UINTN                                                cSize;
   UINTN                                                NewBufferSize;
   EFI_ACPI_1_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER  *Madt;
   EFI_ACPI_1_0_PROCESSOR_LOCAL_APIC_STRUCTURE          *LocalApic;
@@ -36,9 +71,8 @@
   ASSERT (AcpiTableBufferSize >= sizeof (EFI_ACPI_DESCRIPTION_HEADER));
 
   // Query the host for the number of vCPUs
-  CpuCount = 0;
-  cSize    = sizeof (CpuCount);
-  if (BhyveFwCtlGet ("hw.ncpu", &CpuCount, &cSize) == RETURN_SUCCESS) {
+  Status = BhyveGetCpuCount (&CpuCount);
+  if (!EFI_ERROR (Status)) {
     DEBUG ((DEBUG_INFO, "Retrieved CpuCount %d\n", CpuCount));
     ASSERT (CpuCount >= 1);
   } else {
Index: OvmfPkg/Bhyve/BhyveX64.dsc
===================================================================
--- OvmfPkg/Bhyve/BhyveX64.dsc
+++ OvmfPkg/Bhyve/BhyveX64.dsc
@@ -163,8 +163,7 @@
   SecurityManagementLib|MdeModulePkg/Library/DxeSecurityManagementLib/DxeSecurityManagementLib.inf
   UefiUsbLib|MdePkg/Library/UefiUsbLib/UefiUsbLib.inf
   SerializeVariablesLib|OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.inf
-  QemuFwCfgLib|OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibNull.inf
-  QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/BaseQemuFwCfgS3LibNull.inf
+  QemuFwCfgLib|OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf
   BhyveFwCtlLib|OvmfPkg/Library/BhyveFwCtlLib/BhyveFwCtlLib.inf
   VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf
   MemEncryptSevLib|OvmfPkg/Library/BaseMemEncryptSevLib/DxeMemEncryptSevLib.inf
@@ -355,6 +354,7 @@
 !endif
   PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
   MpInitLib|UefiCpuPkg/Library/MpInitLibUp/MpInitLibUp.inf
+  QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
 
 [LibraryClasses.common.UEFI_APPLICATION]
   PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf