[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH v3 29/35] OvmfPkg/PlatformBootManagerLib: Handle the absence of PCI bus on Xen PVH



When running in a Xen PVH guest, there's nothing to do in
PciAcpiInitialization() because there isn't any PCI bus. When the Host
Bridge DID isn't recognised, simply continue. (The value of
PcdOvmfHostBridgePciDevId would be 0 because it isn't set.)

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---

Notes:
    v3:
    - Instead of checking for a false value,
      XEN_PVH_PCI_HOST_BRIDGE_DEVICE_ID, simply check if we are running xen
      when the HostBridge device ID isn't recognised.

 OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c 
b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
index e32969e63e..9ae590293a 100644
--- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
@@ -1209,6 +1209,12 @@ PciAcpiInitialization (
       PciWrite8 (PCI_LIB_ADDRESS (0, 0x1f, 0, 0x6b), 0x0b); // H
       break;
     default:
+      if (XenDetected ()) {
+        //
+        // There is no PCI bus in this case.
+        //
+        return;
+      }
       DEBUG ((EFI_D_ERROR, "%a: Unknown Host Bridge Device ID: 0x%04x\n",
         __FUNCTION__, mHostBridgeDevId));
       ASSERT (FALSE);
-- 
Anthony PERARD


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.