Changeset 68542 in vbox

Timestamp:

Aug 30, 2017 7:40:17 AM (8 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

117722

Message:

ACPI: Provide _OSC method for the PCI root bus so guests can enable MSI-X for devices attached to it

File:

• trunk/src/VBox/Devices/PC/vbox.dsl (modified) (1 diff)

trunk/src/VBox/Devices/PC/vbox.dsl

@@ -1619 +1619 @@
                 Return (CRS)
             }
+
+            Method (_OSC, 4)
+            {
+                If (LEqual (Arg0, ToUUID("33db4d5b-1ff7-401c-9657-7441c03dd766")))
+                {
+                    // OS controls everything.
+                    Return (Arg3)
+                }
+                Else
+                {
+                    // UUID not known
+                    CreateDWordField(Arg3, 0, CDW1)
+                    Or(CDW1, 4, CDW1)
+                    Return (Arg3)
+                }
+            }
         }
     }