Changeset 106889 in vbox for trunk/src/VBox/Additions/common

Timestamp:

Nov 8, 2024 2:22:45 PM (3 months ago)

Author:

vboxsync

Message:

Additions/VBoxGuest-win: Fixed running on x86 guests (regression from r165280). bugref:10734

File:

• trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-win.cpp (modified) (1 diff)

trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-win.cpp

@@ -781 +781 @@
                              pPartialData->u.Memory.Start.QuadPart, pPartialData->u.Memory.Length));
                 }
-                else if ((pPartialData->Flags & CM_RESOURCE_MEMORY_WRITEABILITY_MASK) == CM_RESOURCE_MEMORY_READ_WRITE)
+                else if (   (pPartialData->Flags & CM_RESOURCE_MEMORY_WRITEABILITY_MASK) == CM_RESOURCE_MEMORY_READ_WRITE
+                         /* Make sure that we only treat this as MMIO interface if we have the exact MMIO size.
+                          * We have a different (bigger) memory area (for VMM) which we don't want to be
+                          * detected as MMIO region. This otherwise will break running on x86 guests. */
+                         && (VMMDEV_MMIO_SIZE == pPartialData->u.Memory.Length))
                 {
                     /* Treat as MMIO request interface. */