[HVM] Windows HCT requires non-zero subvendor details in platform PCI device.

Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>

diff --git a/tools/ioemu/hw/xen_platform.c b/tools/ioemu/hw/xen_platform.c
index 89072925c28b9c155449ffd9a25ca87b086146f0..a0e9f1e3975766ac99c183bee12f05bcd59ad2c5 100644 (file)
--- a/tools/ioemu/hw/xen_platform.c
+++ b/tools/ioemu/hw/xen_platform.c
@@ -97,7 +97,8 @@ struct pci_config_header {
     uint8_t  bist; /* Built in self test */
     uint32_t base_address_regs[6];
     uint32_t reserved1;
-    uint32_t reserved2;
+    uint16_t subsystem_vendor_id;
+    uint16_t subsystem_id;
     uint32_t rom_addr;
     uint32_t reserved3;
     uint32_t reserved4;
@@ -126,6 +127,11 @@ void pci_xen_platform_init(PCIBus *bus)
     pch->header_type = 0;
     pch->interrupt_pin = 1;
 
+    /* Microsoft WHQL requires non-zero subsystem IDs. */
+    /* http://www.pcisig.com/reflector/msg02205.html.  */
+    pch->subsystem_vendor_id = pch->vendor_id; /* Duplicate vendor id.  */
+    pch->subsystem_id        = 0x0001;         /* Hardcode sub-id as 1. */
+
     pci_register_io_region(d, 0, 0x100, PCI_ADDRESS_SPACE_IO,
                            platform_ioport_map);