From b844b106e2a20c709ece1b2b89b2ae0e84a0e401 Mon Sep 17 00:00:00 2001
From: Min M Xu <min.m.xu@intel.com>
Date: Mon, 21 Aug 2023 10:51:24 +0800
Subject: OvmfPkg/TdxDxe: Change MadtMpWk->MailBoxVersion from 1 to 0

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4527

According to ACPI 6.5 (https://uefi.org/specs/ACPI/6.5/05_ACPI_Software
_Programming_Model.html?highlight=mailboxversion#multiprocessor-wakeup-
structure) the MailBoxVersion is 0.

This patch changed MadtMpWk->MailBoxVersion from 1 to 0 to fix the error.

Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Michael Roth <michael.roth@amd.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 OvmfPkg/TdxDxe/TdxAcpiTable.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'OvmfPkg')

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;
 
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