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-rw-r--r--include/hw/i386/pc.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index f79d4782c1..475ba9ee2d 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -106,7 +106,16 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
 #define PCI_HOST_PROP_PCI_HOLE64_START "pci-hole64-start"
 #define PCI_HOST_PROP_PCI_HOLE64_END   "pci-hole64-end"
 #define PCI_HOST_PROP_PCI_HOLE64_SIZE  "pci-hole64-size"
-#define DEFAULT_PCI_HOLE64_SIZE (1ULL << 31)
+#define DEFAULT_PCI_HOLE64_SIZE (~0x0ULL)
+
+static inline uint64_t pci_host_get_hole64_size(uint64_t pci_hole64_size)
+{
+    if (pci_hole64_size == DEFAULT_PCI_HOLE64_SIZE) {
+        return 1ULL << 62;
+    } else {
+        return pci_hole64_size;
+    }
+}
 
 void pc_init_pci64_hole(PcPciInfo *pci_info, uint64_t pci_hole64_start,
                         uint64_t pci_hole64_size);