File ovmf.SetOrClearSharedBit.patch of Package xen

From: Olaf Hering <olaf@aepfle.de>
Date: Tue, 20 Jun 2023 18:02:23 +0000
Subject: SetOrClearSharedBit
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/home/abuild/rpmbuild/BUILD/xen-4.18.20230619T122059.42473bae/non-dbg/tools/firmware/ovmf-dir-remote/OvmfPkg/Library/BaseMemEncryptTdxLib/MemoryEncryption.c: In function ‘SetOrClearSharedBit’:
/home/abuild/rpmbuild/BUILD/xen-4.18.20230619T122059.42473bae/non-dbg/tools/firmware/ovmf-dir-remote/MdePkg/Include/Library/DebugLib.h:375:9: error: ‘Status’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
         DebugPrint (PrintLevel, ##__VA_ARGS__);      \
         ^~~~~~~~~~
/home/abuild/rpmbuild/BUILD/xen-4.18.20230619T122059.42473bae/non-dbg/tools/firmware/ovmf-dir-remote/OvmfPkg/Library/BaseMemEncryptTdxLib/MemoryEncryption.c:527:33: note: ‘Status’ was declared here
   EFI_STATUS                    Status;
                                 ^~~~~~

Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
 OvmfPkg/Library/BaseMemEncryptTdxLib/MemoryEncryption.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/OvmfPkg/Library/BaseMemEncryptTdxLib/MemoryEncryption.c
+++ b/OvmfPkg/Library/BaseMemEncryptTdxLib/MemoryEncryption.c
@@ -515,25 +515,25 @@ Split1GPageTo2M (
 **/
 STATIC
 EFI_STATUS
 SetOrClearSharedBit (
   IN   OUT     UINT64              *PageTablePointer,
   IN           TDX_PAGETABLE_MODE  Mode,
   IN           PHYSICAL_ADDRESS    PhysicalAddress,
   IN           UINT64              Length
   )
 {
   UINT64                        AddressEncMask;
   UINT64                        TdStatus;
-  EFI_STATUS                    Status;
+  EFI_STATUS                    Status = 0;
   EDKII_MEMORY_ACCEPT_PROTOCOL  *MemoryAcceptProtocol;
 
   AddressEncMask = GetMemEncryptionAddressMask ();
 
   //
   // Set or clear page table entry. Also, set shared bit in physical address, before calling MapGPA
   //
   if (Mode == SetSharedBit) {
     *PageTablePointer |= AddressEncMask;
     PhysicalAddress   |= AddressEncMask;
   } else {
     *PageTablePointer &= ~AddressEncMask;