BuildResourceDescriptorHob() expects the third parameter be the Length,
not the End address.
Fixes: 328076cfdf45 ("OvmfPkg/PlatformInitLib: Add PlatformAddHobCB")

Reported-by: Tom Lendacky <thomas.lendacky@...>
Signed-off-by: Gerd Hoffmann <kraxel@...>
---
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 5aeeeff89f57..38cece9173e8 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: