When compiling "OvmfPkg\Library\PciHostBridgeLib\XenSupport.c" for IA32,
the VS2015x86 compiler emits the following:

> XenSupport.c(41): error C2220: warning treated as error - no 'object'
>                                file generated
> XenSupport.c(41): warning C4244: 'function': conversion from 'UINT64' to
>                                  'UINTN', possible loss of data
> XenSupport.c(48): warning C4244: 'function': conversion from 'UINT64' to
>                                  'UINTN', possible loss of data
> XenSupport.c(49): warning C4244: 'function': conversion from 'UINT64' to
>                                  'UINTN', possible loss of data
> XenSupport.c(50): warning C4244: 'function': conversion from 'UINT64' to
>                                  'UINTN', possible loss of data
> XenSupport.c(222): warning C4244: 'function': conversion from 'UINT64'
>                                   to 'UINTN', possible loss of data
> XenSupport.c(241): warning C4244: 'function': conversion from 'UINT64'
>                                   to 'UINTN', possible loss of data

PciLib functions take UINTN addresses that were encoded with the
PCI_LIB_ADDRESS() macro. We carry addresses from the macro invocations to
the function calls in two UINT64 variables however. This loses no data,
but it alerts VS2015x86. Change the variable types to UINTN.

Cc: Jordan Justen <[email protected]>
Cc: Ruiyu Ni <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
---
 OvmfPkg/Library/PciHostBridgeLib/XenSupport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c 
b/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
index 21896637e051..31c63ae19e0a 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
+++ b/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
@@ -30,7 +30,7 @@
 STATIC
 VOID
 PcatPciRootBridgeBarExisted (
-  IN  UINT64                         Address,
+  IN  UINTN                          Address,
   OUT UINT32                         *OriginalValue,
   OUT UINT32                         *Value
   )
@@ -180,7 +180,7 @@ ScanForRootBridges (
   UINT8      Device;
   UINT8      Function;
   UINTN      NumberOfDevices;
-  UINT64     Address;
+  UINTN      Address;
   PCI_TYPE01 Pci;
   UINT64     Attributes;
   UINT64     Base;
-- 
1.8.3.1


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