diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index ff6689eba9179329f79e89942dea7ff12d32ecca..81e64f478679be04dafdb1a1786e34e72906c310 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -898,6 +898,9 @@ struct acpi_bit_register_info {
 #define ACPI_OSI_WIN_XP_SP2             0x05
 #define ACPI_OSI_WINSRV_2003_SP1        0x06
 #define ACPI_OSI_WIN_VISTA              0x07
+#define ACPI_OSI_WINSRV_2008            0x08
+#define ACPI_OSI_WIN_VISTA_SP1          0x09
+#define ACPI_OSI_WIN_7                  0x0A
 
 #define ACPI_ALWAYS_ILLEGAL             0x00
 
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index 5503307b8bb70c1c450ce9410c164a47f85dd1b7..5d54e36ab4536eb151acf54cf4a11c89dd9796de 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -69,6 +69,9 @@ static struct acpi_interface_info acpi_interfaces_supported[] = {
 	{"Windows 2001 SP2", ACPI_OSI_WIN_XP_SP2},	/* Windows XP SP2 */
 	{"Windows 2001.1 SP1", ACPI_OSI_WINSRV_2003_SP1},	/* Windows Server 2003 SP1 - Added 03/2006 */
 	{"Windows 2006", ACPI_OSI_WIN_VISTA},	/* Windows Vista - Added 03/2006 */
+	{"Windows 2006.1", ACPI_OSI_WINSRV_2008},	/* Windows Server 2008 - Added 09/2009 */
+	{"Windows 2006 SP1", ACPI_OSI_WIN_VISTA_SP1},	/* Windows Vista SP1 - Added 09/2009 */
+	{"Windows 2009", ACPI_OSI_WIN_7},	/* Windows 7 and Server 2008 R2 - Added 09/2009 */
 
 	/* Feature Group Strings */