Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge

Fix up delete/modify conflict of arch/ppc/kernel/process.c by hand (it's
gone, gone, gone).

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

17 files changed, 101 insertions, 155 deletions

diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 8a8393e..d5677cb 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -64,25 +64,6 @@ extern void iommu_free_table(struct device_node *dn);
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */
 
-#ifdef CONFIG_PPC_PSERIES
-
-/* Creates table for an individual device node */
-extern void iommu_devnode_init_pSeries(struct device_node *dn);
-
-#endif /* CONFIG_PPC_PSERIES */
-
-#ifdef CONFIG_PPC_ISERIES
-
-/* Creates table for an individual device node */
-extern void iommu_devnode_init_iSeries(struct device_node *dn);
-/* Get table parameters from HV */
-extern void iommu_table_getparms_iSeries(unsigned long busno,
-					 unsigned char slotno,
-					 unsigned char virtbus,
-					 struct iommu_table* tbl);
-
-#endif /* CONFIG_PPC_ISERIES */
-
 /* Initializes an iommu_table based in values set in the passed-in
  * structure
  */
diff --git a/include/asm-powerpc/iseries/hv_call.h b/include/asm-powerpc/iseries/hv_call.h
index e9f831c..162d653 100644
--- a/include/asm-powerpc/iseries/hv_call.h
+++ b/include/asm-powerpc/iseries/hv_call.h
@@ -1,5 +1,4 @@
 /*
- * HvCall.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -15,8 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-/*
+ *
  * This file contains the "hypervisor call" interface which is used to
  * drive the hypervisor from the OS.
  */
diff --git a/include/asm-powerpc/iseries/hv_call_event.h b/include/asm-powerpc/iseries/hv_call_event.h
index 46763a3..4cec476 100644
--- a/include/asm-powerpc/iseries/hv_call_event.h
+++ b/include/asm-powerpc/iseries/hv_call_event.h
@@ -1,5 +1,4 @@
 /*
- * HvCallEvent.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -15,8 +14,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-/*
+ *
  * This file contains the "hypervisor call" interface which is used to
  * drive the hypervisor from the OS.
  */
@@ -33,32 +31,9 @@ typedef u8 HvLpEvent_Type;
 typedef u8 HvLpEvent_AckInd;
 typedef u8 HvLpEvent_AckType;
 
-struct	HvCallEvent_PackedParms {
-	u8		xAckType:1;
-	u8		xAckInd:1;
-	u8		xRsvd:1;
-	u8		xTargetLp:5;
-	u8		xType;
-	u16		xSubtype;
-	HvLpInstanceId	xSourceInstId;
-	HvLpInstanceId	xTargetInstId;
-};
-
 typedef u8 HvLpDma_Direction;
 typedef u8 HvLpDma_AddressType;
 
-struct	HvCallEvent_PackedDmaParms {
-	u8		xDirection:1;
-	u8		xLocalAddrType:1;
-	u8		xRemoteAddrType:1;
-	u8		xRsvd1:5;
-	HvLpIndex	xRemoteLp;
-	u8		xType;
-	u8		xRsvd2;
-	HvLpInstanceId	xLocalInstId;
-	HvLpInstanceId	xRemoteInstId;
-};
-
 typedef u64 HvLpEvent_Rc;
 typedef u64 HvLpDma_Rc;
 
@@ -92,11 +67,8 @@ static inline void HvCallEvent_setInterLpQueueIndex(u8 queueIndex)
 static inline void HvCallEvent_setLpEventStack(u8 queueIndex,
 		char *eventStackAddr, u32 eventStackSize)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(eventStackAddr);
-	HvCall3(HvCallEventSetLpEventStack, queueIndex, abs_addr,
-			eventStackSize);
+	HvCall3(HvCallEventSetLpEventStack, queueIndex,
+			virt_to_abs(eventStackAddr), eventStackSize);
 }
 
 static inline void HvCallEvent_setLpEventQueueInterruptProc(u8 queueIndex,
@@ -108,14 +80,7 @@ static inline void HvCallEvent_setLpEventQueueInterruptProc(u8 queueIndex,
 
 static inline HvLpEvent_Rc HvCallEvent_signalLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-#ifdef DEBUG_SENDEVENT
-	printk("HvCallEvent_signalLpEvent: *event = %016lx\n ",
-			(unsigned long)event);
-#endif
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventSignalLpEvent, abs_addr);
+	return HvCall1(HvCallEventSignalLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
@@ -127,17 +92,21 @@ static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
 {
 	/* Pack the misc bits into a single Dword to pass to PLIC */
 	union {
-		struct HvCallEvent_PackedParms	parms;
+		struct {
+			u8		ack_and_target;
+			u8		type;
+			u16		subtype;
+			HvLpInstanceId	src_inst;
+			HvLpInstanceId	target_inst;
+		} parms;
 		u64		dword;
 	} packed;
-	packed.parms.xAckType	= ackType;
-	packed.parms.xAckInd	= ackInd;
-	packed.parms.xRsvd	= 0;
-	packed.parms.xTargetLp	= targetLp;
-	packed.parms.xType	= type;
-	packed.parms.xSubtype	= subtype;
-	packed.parms.xSourceInstId	= sourceInstanceId;
-	packed.parms.xTargetInstId	= targetInstanceId;
+
+	packed.parms.ack_and_target = (ackType << 7) | (ackInd << 6) | targetLp;
+	packed.parms.type = type;
+	packed.parms.subtype = subtype;
+	packed.parms.src_inst = sourceInstanceId;
+	packed.parms.target_inst = targetInstanceId;
 
 	return HvCall7(HvCallEventSignalLpEventParms, packed.dword,
 			correlationToken, eventData1, eventData2,
@@ -146,18 +115,12 @@ static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
 
 static inline HvLpEvent_Rc HvCallEvent_ackLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventAckLpEvent, abs_addr);
+	return HvCall1(HvCallEventAckLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpEvent_Rc HvCallEvent_cancelLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventCancelLpEvent, abs_addr);
+	return HvCall1(HvCallEventCancelLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpInstanceId HvCallEvent_getSourceLpInstanceId(
@@ -195,59 +158,34 @@ static inline HvLpDma_Rc HvCallEvent_dmaBufList(HvLpEvent_Type type,
 {
 	/* Pack the misc bits into a single Dword to pass to PLIC */
 	union {
-		struct HvCallEvent_PackedDmaParms	parms;
+		struct {
+			u8		flags;
+			HvLpIndex	remote;
+			u8		type;
+			u8		reserved;
+			HvLpInstanceId	local_inst;
+			HvLpInstanceId	remote_inst;
+		} parms;
 		u64		dword;
 	} packed;
 
-	packed.parms.xDirection		= direction;
-	packed.parms.xLocalAddrType	= localAddressType;
-	packed.parms.xRemoteAddrType	= remoteAddressType;
-	packed.parms.xRsvd1		= 0;
-	packed.parms.xRemoteLp		= remoteLp;
-	packed.parms.xType		= type;
-	packed.parms.xRsvd2		= 0;
-	packed.parms.xLocalInstId	= localInstanceId;
-	packed.parms.xRemoteInstId	= remoteInstanceId;
+	packed.parms.flags = (direction << 7) |
+		(localAddressType << 6) | (remoteAddressType << 5);
+	packed.parms.remote = remoteLp;
+	packed.parms.type = type;
+	packed.parms.reserved = 0;
+	packed.parms.local_inst = localInstanceId;
+	packed.parms.remote_inst = remoteInstanceId;
 
 	return HvCall4(HvCallEventDmaBufList, packed.dword, localBufList,
 			remoteBufList, transferLength);
 }
 
-static inline HvLpDma_Rc HvCallEvent_dmaSingle(HvLpEvent_Type type,
-		HvLpIndex remoteLp, HvLpDma_Direction direction,
-		HvLpInstanceId localInstanceId,
-		HvLpInstanceId remoteInstanceId,
-		HvLpDma_AddressType localAddressType,
-		HvLpDma_AddressType remoteAddressType,
-		u64 localAddrOrTce, u64 remoteAddrOrTce, u32 transferLength)
-{
-	/* Pack the misc bits into a single Dword to pass to PLIC */
-	union {
-		struct HvCallEvent_PackedDmaParms	parms;
-		u64		dword;
-	} packed;
-
-	packed.parms.xDirection		= direction;
-	packed.parms.xLocalAddrType	= localAddressType;
-	packed.parms.xRemoteAddrType	= remoteAddressType;
-	packed.parms.xRsvd1		= 0;
-	packed.parms.xRemoteLp		= remoteLp;
-	packed.parms.xType		= type;
-	packed.parms.xRsvd2		= 0;
-	packed.parms.xLocalInstId	= localInstanceId;
-	packed.parms.xRemoteInstId	= remoteInstanceId;
-
-	return (HvLpDma_Rc)HvCall4(HvCallEventDmaSingle, packed.dword,
-			localAddrOrTce, remoteAddrOrTce, transferLength);
-}
-
 static inline HvLpDma_Rc HvCallEvent_dmaToSp(void *local, u32 remote,
 		u32 length, HvLpDma_Direction dir)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(local);
-	return HvCall4(HvCallEventDmaToSp, abs_addr, remote, length, dir);
+	return HvCall4(HvCallEventDmaToSp, virt_to_abs(local), remote,
+			length, dir);
 }
 
 #endif /* _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H */
diff --git a/include/asm-powerpc/iseries/hv_call_sc.h b/include/asm-powerpc/iseries/hv_call_sc.h
index dec7e9d..f5d2109 100644
--- a/include/asm-powerpc/iseries/hv_call_sc.h
+++ b/include/asm-powerpc/iseries/hv_call_sc.h
@@ -1,5 +1,4 @@
 /*
- * HvCallSc.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/hv_lp_config.h b/include/asm-powerpc/iseries/hv_lp_config.h
index bc00f03..df8b207 100644
--- a/include/asm-powerpc/iseries/hv_lp_config.h
+++ b/include/asm-powerpc/iseries/hv_lp_config.h
@@ -1,5 +1,4 @@
 /*
- * HvLpConfig.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/hv_lp_event.h b/include/asm-powerpc/iseries/hv_lp_event.h
index 499ab1a..4065a4d 100644
--- a/include/asm-powerpc/iseries/hv_lp_event.h
+++ b/include/asm-powerpc/iseries/hv_lp_event.h
@@ -1,5 +1,4 @@
 /*
- * HvLpEvent.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -32,17 +31,8 @@
  * partitions through PLIC.
  */
 
-struct HvEventFlags {
-	u8	xValid:1;	/* Indicates a valid request	x00-x00 */
-	u8	xRsvd1:4;	/* Reserved			... */
-	u8	xAckType:1;	/* Immediate or deferred	... */
-	u8	xAckInd:1;	/* Indicates if ACK required	... */
-	u8	xFunction:1;	/* Interrupt or Acknowledge	... */
-};
-
-
 struct HvLpEvent {
-	struct HvEventFlags xFlags;	/* Event flags		      x00-x00 */
+	u8	flags;			/* Event flags		      x00-x00 */
 	u8	xType;			/* Type of message	      x01-x01 */
 	u16	xSubtype;		/* Subtype for event	      x02-x03 */
 	u8	xSourceLp;		/* Source LP		      x04-x04 */
@@ -126,6 +116,11 @@ extern int HvLpEvent_closePath(HvLpEvent_Type eventType, HvLpIndex lpIndex);
 #define HvLpEvent_AckType_ImmediateAck 0
 #define HvLpEvent_AckType_DeferredAck 1
 
+#define HV_LP_EVENT_INT			0x01
+#define HV_LP_EVENT_DO_ACK		0x02
+#define HV_LP_EVENT_DEFERRED_ACK	0x04
+#define HV_LP_EVENT_VALID		0x80
+
 #define HvLpDma_Direction_LocalToRemote 0
 #define HvLpDma_Direction_RemoteToLocal 1
 
@@ -139,4 +134,29 @@ extern int HvLpEvent_closePath(HvLpEvent_Type eventType, HvLpIndex lpIndex);
 #define HvLpDma_Rc_InvalidAddress 4
 #define HvLpDma_Rc_InvalidLength 5
 
+static inline int hvlpevent_is_valid(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_VALID;
+}
+
+static inline void hvlpevent_invalidate(struct HvLpEvent *h)
+{
+	h->flags &= ~ HV_LP_EVENT_VALID;
+}
+
+static inline int hvlpevent_is_int(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_INT;
+}
+
+static inline int hvlpevent_is_ack(struct HvLpEvent *h)
+{
+	return !hvlpevent_is_int(h);
+}
+
+static inline int hvlpevent_need_ack(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_DO_ACK;
+}
+
 #endif /* _ASM_POWERPC_ISERIES_HV_LP_EVENT_H */
diff --git a/include/asm-powerpc/iseries/hv_types.h b/include/asm-powerpc/iseries/hv_types.h
index c38f7e3..c3e6d2a 100644
--- a/include/asm-powerpc/iseries/hv_types.h
+++ b/include/asm-powerpc/iseries/hv_types.h
@@ -1,5 +1,4 @@
 /*
- * HvTypes.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/iseries_io.h b/include/asm-powerpc/iseries/iseries_io.h
index 56b2113..496aa85 100644
--- a/include/asm-powerpc/iseries/iseries_io.h
+++ b/include/asm-powerpc/iseries/iseries_io.h
@@ -6,7 +6,7 @@
 #ifdef CONFIG_PPC_ISERIES
 #include <linux/types.h>
 /*
- * File iSeries_io.h created by Allan Trautman on Thu Dec 28 2000.
+ * Created by Allan Trautman on Thu Dec 28 2000.
  *
  * Remaps the io.h for the iSeries Io
  * Copyright (C) 2000  Allan H Trautman, IBM Corporation
@@ -32,6 +32,7 @@
  * End Change Activity
  */
 
+#ifdef CONFIG_PCI
 extern u8   iSeries_Read_Byte(const volatile void __iomem * IoAddress);
 extern u16  iSeries_Read_Word(const volatile void __iomem * IoAddress);
 extern u32  iSeries_Read_Long(const volatile void __iomem * IoAddress);
@@ -44,6 +45,17 @@ extern void iSeries_memcpy_toio(volatile void __iomem *dest, void *source,
 		size_t n);
 extern void iSeries_memcpy_fromio(void *dest,
 		const volatile void __iomem *source, size_t n);
+#else
+static inline u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
+{
+	return 0xff;
+}
+
+static inline void iSeries_Write_Byte(u8 IoData,
+		volatile void __iomem *IoAddress)
+{
+}
+#endif	/* CONFIG_PCI */
 
 #endif /* CONFIG_PPC_ISERIES */
 #endif /* _ASM_POWERPC_ISERIES_ISERIES_IO_H */
diff --git a/include/asm-powerpc/iseries/it_exp_vpd_panel.h b/include/asm-powerpc/iseries/it_exp_vpd_panel.h
index 66a17a2..304a609 100644
--- a/include/asm-powerpc/iseries/it_exp_vpd_panel.h
+++ b/include/asm-powerpc/iseries/it_exp_vpd_panel.h
@@ -1,5 +1,4 @@
 /*
- * ItExtVpdPanel.h
  * Copyright (C) 2002  Dave Boutcher IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/it_lp_naca.h b/include/asm-powerpc/iseries/it_lp_naca.h
index c3ef1de..4fdcf05 100644
--- a/include/asm-powerpc/iseries/it_lp_naca.h
+++ b/include/asm-powerpc/iseries/it_lp_naca.h
@@ -1,5 +1,4 @@
 /*
- * ItLpNaca.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -37,17 +36,13 @@ struct ItLpNaca {
 	u8	xLpIndex;		// LP Index			x0B-x0B
 	u16	xMaxLpQueues;		// Number of allocated queues	x0C-x0D
 	u16	xLpQueueOffset;		// Offset to start of LP queues	x0E-x0F
-	u8	xPirEnvironMode:8;	// Piranha or hardware		x10-x10
-	u8	xPirConsoleMode:8;	// Piranha console indicator	x11-x11
-	u8	xPirDasdMode:8;		// Piranha dasd indicator	x12-x12
+	u8	xPirEnvironMode;	// Piranha or hardware		x10-x10
+	u8	xPirConsoleMode;	// Piranha console indicator	x11-x11
+	u8	xPirDasdMode;		// Piranha dasd indicator	x12-x12
 	u8	xRsvd1_0[5];		// Reserved for Piranha related	x13-x17
-	u8	xLparInstalled:1;	// Is LPAR installed on system	x18-x1F
-	u8	xSysPartitioned:1;	// Is the system partitioned	...
-	u8	xHwSyncedTBs:1;		// Hardware synced TBs		...
-	u8	xIntProcUtilHmt:1;	// Utilize HMT for interrupts	...
-	u8	xRsvd1_1:4;		// Reserved			...
-	u8	xSpVpdFormat:8;		// VPD areas are in CSP format	...
-	u8	xIntProcRatio:8;	// Ratio of int procs to procs	...
+	u8	flags;			// flags, see below		x18-x1F
+	u8	xSpVpdFormat;		// VPD areas are in CSP format	...
+	u8	xIntProcRatio;		// Ratio of int procs to procs	...
 	u8	xRsvd1_2[5];		// Reserved			...
 	u16	xRsvd1_3;		// Reserved			x20-x21
 	u16	xPlicVrmIndex;		// VRM index of PLIC		x22-x23
@@ -77,4 +72,9 @@ struct ItLpNaca {
 
 extern struct ItLpNaca		itLpNaca;
 
+#define ITLPNACA_LPAR		0x80	/* Is LPAR installed on the system */
+#define ITLPNACA_PARTITIONED	0x40	/* Is the system partitioned */
+#define ITLPNACA_HWSYNCEDTBS	0x20	/* Hardware synced TBs */
+#define ITLPNACA_HMTINT		0x10	/* Utilize MHT for interrupts */
+
 #endif /* _ASM_POWERPC_ISERIES_IT_LP_NACA_H */
diff --git a/include/asm-powerpc/iseries/it_lp_queue.h b/include/asm-powerpc/iseries/it_lp_queue.h
index a60d03a..b7c6fc1 100644
--- a/include/asm-powerpc/iseries/it_lp_queue.h
+++ b/include/asm-powerpc/iseries/it_lp_queue.h
@@ -1,5 +1,4 @@
 /*
- * ItLpQueue.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/it_lp_reg_save.h b/include/asm-powerpc/iseries/it_lp_reg_save.h
index 81824e1..5403b75 100644
--- a/include/asm-powerpc/iseries/it_lp_reg_save.h
+++ b/include/asm-powerpc/iseries/it_lp_reg_save.h
@@ -1,5 +1,4 @@
 /*
- * ItLpRegSave.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -83,4 +82,4 @@ struct ItLpRegSave {
 
 extern struct ItLpRegSave iseries_reg_save[];
 
-#endif /* _ITLPREGSAVE_H */
+#endif /* _ASM_POWERPC_ISERIES_IT_LP_REG_SAVE_H */
diff --git a/include/asm-powerpc/iseries/lpar_map.h b/include/asm-powerpc/iseries/lpar_map.h
index 84fc321..2ec384d 100644
--- a/include/asm-powerpc/iseries/lpar_map.h
+++ b/include/asm-powerpc/iseries/lpar_map.h
@@ -1,5 +1,4 @@
 /*
- * LparMap.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/mf.h b/include/asm-powerpc/iseries/mf.h
index e7bd57a..857e520 100644
--- a/include/asm-powerpc/iseries/mf.h
+++ b/include/asm-powerpc/iseries/mf.h
@@ -1,5 +1,4 @@
 /*
- * mf.h
  * Copyright (C) 2001  Troy D. Armstrong IBM Corporation
  * Copyright (C) 2004  Stephen Rothwell IBM Corporation
  *
diff --git a/include/asm-powerpc/iseries/vio.h b/include/asm-powerpc/iseries/vio.h
index 7e3a469..72a97d3 100644
--- a/include/asm-powerpc/iseries/vio.h
+++ b/include/asm-powerpc/iseries/vio.h
@@ -1,5 +1,4 @@
 /* -*- linux-c -*-
- *  drivers/char/vio.h
  *
  *  iSeries Virtual I/O Message Path header
  *
diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index b0d816f..38de92d 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -142,8 +142,6 @@ void pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus);
 
 extern int pcibios_remove_root_bus(struct pci_controller *phb);
 
-extern void phbs_remap_io(void);
-
 static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
 {
 	struct device_node *busdn = bus->sysdata;
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index 1be629b..9b822af 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -133,6 +133,14 @@ extern int fix_alignment(struct pt_regs *);
 extern void cvt_fd(float *from, double *to, struct thread_struct *thread);
 extern void cvt_df(double *from, float *to, struct thread_struct *thread);
 
+#ifndef CONFIG_SMP
+extern void discard_lazy_cpu_state(void);
+#else
+static inline void discard_lazy_cpu_state(void)
+{
+}
+#endif
+
 #ifdef CONFIG_ALTIVEC
 extern void flush_altivec_to_thread(struct task_struct *);
 #else