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-rw-r--r--OvmfPkg/TdxDxe/TdxAcpiTable.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/OvmfPkg/TdxDxe/TdxAcpiTable.c b/OvmfPkg/TdxDxe/TdxAcpiTable.c
index 5dc27e2..d6d6975 100644
--- a/OvmfPkg/TdxDxe/TdxAcpiTable.c
+++ b/OvmfPkg/TdxDxe/TdxAcpiTable.c
@@ -186,7 +186,7 @@ AlterAcpiTable (
MadtMpWk = (EFI_ACPI_6_4_MULTIPROCESSOR_WAKEUP_STRUCTURE *)(NewMadtTable + Table->Length);
MadtMpWk->Type = EFI_ACPI_6_4_MULTIPROCESSOR_WAKEUP;
MadtMpWk->Length = sizeof (EFI_ACPI_6_4_MULTIPROCESSOR_WAKEUP_STRUCTURE);
- MadtMpWk->MailBoxVersion = 1;
+ MadtMpWk->MailBoxVersion = 0;
MadtMpWk->Reserved = 0;
MadtMpWk->MailBoxAddress = RelocateMailboxAddress;