From f25ee547634375b7f2dfa09209942fd03d00c76f Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 25 Jan 2023 18:10:49 +0100
Subject: [PATCH] OvmfPkg: fix BuildResourceDescriptorHob call in
 PlatformAddHobCB()

BuildResourceDescriptorHob() expects the third parameter be the Length,
not the End address.

Fixes: 328076cfdf45 ("OvmfPkg/PlatformInitLib: Add PlatformAddHobCB")
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 OvmfPkg/Library/PlatformInitLib/MemDetect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OvmfPkg/Library/PlatformInitLib/MemDetect.c b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
index 5aeeeff89f..38cece9173 100644
--- a/OvmfPkg/Library/PlatformInitLib/MemDetect.c
+++ b/OvmfPkg/Library/PlatformInitLib/MemDetect.c
@@ -200,7 +200,7 @@ PlatformAddHobCB (
 
       break;
     case EfiAcpiAddressRangeReserved:
-      BuildResourceDescriptorHob (EFI_RESOURCE_MEMORY_RESERVED, 0, Base, End);
+      BuildResourceDescriptorHob (EFI_RESOURCE_MEMORY_RESERVED, 0, Base, End - Base);
       DEBUG ((DEBUG_INFO, "%a: Reserved [0x%Lx, 0x%Lx)\n", __FUNCTION__, Base, End));
       break;
     default: