Merge from Linus' tree.

84 files changed, 589 insertions, 305 deletions

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index fa98dae3cd9..eb20c3afff5 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -127,6 +127,10 @@ common_shutdown_1(void *generic_ptr)
 	/* If booted from SRM, reset some of the original environment. */
 	if (alpha_using_srm) {
 #ifdef CONFIG_DUMMY_CONSOLE
+		/* If we've gotten here after SysRq-b, leave interrupt
+		   context before taking over the console. */
+		if (in_interrupt())
+			irq_exit();
 		/* This has the effect of resetting the VGA video origin.  */
 		take_over_console(&dummy_con, 0, MAX_NR_CONSOLES-1, 1);
 #endif
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index 9e36b07fa94..d5da6b1b28e 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -395,6 +395,22 @@ clipper_init_irq(void)
  */
 
 static int __init
+isa_irq_fixup(struct pci_dev *dev, int irq)
+{
+	u8 irq8;
+
+	if (irq > 0)
+		return irq;
+
+	/* This interrupt is routed via ISA bridge, so we'll
+	   just have to trust whatever value the console might
+	   have assigned.  */
+	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq8);
+
+	return irq8 & 0xf;
+}
+
+static int __init
 dp264_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[6][5] __initdata = {
@@ -407,25 +423,13 @@ dp264_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 		{ 16+ 3, 16+ 3, 16+ 2, 16+ 1, 16+ 0}  /* IdSel 10 slot 3 */
 	};
 	const long min_idsel = 5, max_idsel = 10, irqs_per_slot = 5;
-
 	struct pci_controller *hose = dev->sysdata;
 	int irq = COMMON_TABLE_LOOKUP;
 
-	if (irq > 0) {
+	if (irq > 0)
 		irq += 16 * hose->index;
-	} else {
-		/* ??? The Contaq IDE controller on the ISA bridge uses
-		   "legacy" interrupts 14 and 15.  I don't know if anything
-		   can wind up at the same slot+pin on hose1, so we'll
-		   just have to trust whatever value the console might
-		   have assigned.  */
-
-		u8 irq8;
-		pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq8);
-		irq = irq8;
-	}
 
-	return irq;
+	return isa_irq_fixup(dev, irq);
 }
 
 static int __init
@@ -453,7 +457,8 @@ monet_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 		{    24,    24,    25,    26,    27}  /* IdSel 15 slot 5 PCI2*/
 	};
 	const long min_idsel = 3, max_idsel = 15, irqs_per_slot = 5;
-	return COMMON_TABLE_LOOKUP;
+
+	return isa_irq_fixup(dev, COMMON_TABLE_LOOKUP);
 }
 
 static u8 __init
@@ -507,7 +512,8 @@ webbrick_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 		{    47,    47,    46,    45,    44}, /* IdSel 17 slot 3 */
 	};
 	const long min_idsel = 7, max_idsel = 17, irqs_per_slot = 5;
-	return COMMON_TABLE_LOOKUP;
+
+	return isa_irq_fixup(dev, COMMON_TABLE_LOOKUP);
 }
 
 static int __init
@@ -524,14 +530,13 @@ clipper_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 		{    -1,    -1,    -1,    -1,    -1}  /* IdSel 7 ISA Bridge */
 	};
 	const long min_idsel = 1, max_idsel = 7, irqs_per_slot = 5;
-
 	struct pci_controller *hose = dev->sysdata;
 	int irq = COMMON_TABLE_LOOKUP;
 
 	if (irq > 0)
 		irq += 16 * hose->index;
 
-	return irq;
+	return isa_irq_fixup(dev, irq);
 }
 
 static void __init
diff --git a/arch/arm/boot/compressed/ofw-shark.c b/arch/arm/boot/compressed/ofw-shark.c
index 7f6f5db0d06..465c54b6b12 100644
--- a/arch/arm/boot/compressed/ofw-shark.c
+++ b/arch/arm/boot/compressed/ofw-shark.c
@@ -256,5 +256,5 @@ asmlinkage void ofw_init(ofw_handle_t o, int *nomr, int *pointer)
 	temp[11]='\0';
 	mem_len = OF_getproplen(o,phandle, temp);
 	OF_getprop(o,phandle, temp, buffer, mem_len);
-	(unsigned char) pointer[32] = ((unsigned char *) buffer)[mem_len-2];
+	* ((unsigned char *) &pointer[32]) = ((unsigned char *) buffer)[mem_len-2];
 }
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 7152bfbee58..93b5e8e5292 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -537,7 +537,7 @@ ENTRY(__switch_to)
 #ifdef CONFIG_CPU_MPCORE
 	clrex
 #else
-	strex	r3, r4, [ip]			@ Clear exclusive monitor
+	strex	r5, r4, [ip]			@ Clear exclusive monitor
 #endif
 #endif
 #if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
diff --git a/arch/arm/kernel/io.c b/arch/arm/kernel/io.c
index 6c20c1188b6..1f6822dfae7 100644
--- a/arch/arm/kernel/io.c
+++ b/arch/arm/kernel/io.c
@@ -7,7 +7,7 @@
  * Copy data from IO memory space to "real" memory space.
  * This needs to be optimized.
  */
-void _memcpy_fromio(void *to, void __iomem *from, size_t count)
+void _memcpy_fromio(void *to, const volatile void __iomem *from, size_t count)
 {
 	unsigned char *t = to;
 	while (count) {
@@ -22,7 +22,7 @@ void _memcpy_fromio(void *to, void __iomem *from, size_t count)
  * Copy data from "real" memory space to IO memory space.
  * This needs to be optimized.
  */
-void _memcpy_toio(void __iomem *to, const void *from, size_t count)
+void _memcpy_toio(volatile void __iomem *to, const void *from, size_t count)
 {
 	const unsigned char *f = from;
 	while (count) {
@@ -37,7 +37,7 @@ void _memcpy_toio(void __iomem *to, const void *from, size_t count)
  * "memset" on IO memory space.
  * This needs to be optimized.
  */
-void _memset_io(void __iomem *dst, int c, size_t count)
+void _memset_io(volatile void __iomem *dst, int c, size_t count)
 {
 	while (count) {
 		count--;
diff --git a/arch/arm/kernel/semaphore.c b/arch/arm/kernel/semaphore.c
index ac423e3e224..4c31f292305 100644
--- a/arch/arm/kernel/semaphore.c
+++ b/arch/arm/kernel/semaphore.c
@@ -178,7 +178,7 @@ int __down_trylock(struct semaphore * sem)
  * registers (r0 to r3 and lr), but not ip, as we use it as a return
  * value in some cases..
  */
-asm("	.section .sched.text,\"ax\"		\n\
+asm("	.section .sched.text,\"ax\",%progbits	\n\
 	.align	5				\n\
 	.globl	__down_failed			\n\
 __down_failed:					\n\
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 4554c961251..e7d22dbcb69 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -624,6 +624,9 @@ void __attribute__((noreturn)) __bug(const char *file, int line, void *data)
 		printk(" - extra data = %p", data);
 	printk("\n");
 	*(int *)0 = 0;
+
+	/* Avoid "noreturn function does return" */
+	for (;;);
 }
 EXPORT_SYMBOL(__bug);
 
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index ad2d66c93a5..08e58ecd44b 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -23,20 +23,20 @@ SECTIONS
 			*(.init.text)
 			_einittext = .;
 		__proc_info_begin = .;
-			*(.proc.info)
+			*(.proc.info.init)
 		__proc_info_end = .;
 		__arch_info_begin = .;
-			*(.arch.info)
+			*(.arch.info.init)
 		__arch_info_end = .;
 		__tagtable_begin = .;
-			*(.taglist)
+			*(.taglist.init)
 		__tagtable_end = .;
 		. = ALIGN(16);
 		__setup_start = .;
 			*(.init.setup)
 		__setup_end = .;
 		__early_begin = .;
-			*(__early_param)
+			*(.early_param.init)
 		__early_end = .;
 		__initcall_start = .;
 			*(.initcall1.init)
diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
index ae1fa099d5f..39b06ed8064 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
@@ -123,6 +123,7 @@ static void __init ixdp425_init(void)
 	platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
 }
 
+#ifdef CONFIG_ARCH_IXDP465
 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_ram	= PHYS_OFFSET,
@@ -134,7 +135,9 @@ MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
 	.boot_params	= 0x0100,
 	.init_machine	= ixdp425_init,
 MACHINE_END
+#endif
 
+#ifdef CONFIG_MACH_IXDP465
 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_ram	= PHYS_OFFSET,
@@ -146,7 +149,9 @@ MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
 	.boot_params	= 0x0100,
 	.init_machine	= ixdp425_init,
 MACHINE_END
+#endif
 
+#ifdef CONFIG_ARCH_PRPMC1100
 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_ram	= PHYS_OFFSET,
@@ -158,6 +163,7 @@ MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
 	.boot_params	= 0x0100,
 	.init_machine	= ixdp425_init,
 MACHINE_END
+#endif
 
 /*
  * Avila is functionally equivalent to IXDP425 except that it adds
diff --git a/arch/arm/mach-s3c2410/mach-anubis.c b/arch/arm/mach-s3c2410/mach-anubis.c
index f87aa0b669a..7c05f27fe1d 100644
--- a/arch/arm/mach-s3c2410/mach-anubis.c
+++ b/arch/arm/mach-s3c2410/mach-anubis.c
@@ -12,6 +12,7 @@
  *
  * Modifications:
  *	02-May-2005 BJD  Copied from mach-bast.c
+ *	20-Sep-2005 BJD  Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -232,7 +233,7 @@ static struct s3c24xx_board anubis_board __initdata = {
 	.clocks_count  = ARRAY_SIZE(anubis_clocks)
 };
 
-void __init anubis_map_io(void)
+static void __init anubis_map_io(void)
 {
 	/* initialise the clocks */
 
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 1a3367da640..ed1f07d7252 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -31,6 +31,7 @@
  *     17-Jul-2005 BJD  Changed to platform device for SuperIO 16550s
  *     25-Jul-2005 BJD  Removed ASIX static mappings
  *     27-Jul-2005 BJD  Ensure maximum frequency of i2c bus
+ *     20-Sep-2005 BJD  Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -428,7 +429,7 @@ static struct s3c24xx_board bast_board __initdata = {
 	.clocks_count  = ARRAY_SIZE(bast_clocks)
 };
 
-void __init bast_map_io(void)
+static void __init bast_map_io(void)
 {
 	/* initialise the clocks */
 
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 6ff1889fbd2..fb3cb01266e 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -24,6 +24,7 @@
  *     10-Jan-2005 BJD  Removed include of s3c2410.h
  *     14-Jan-2005 BJD  Added clock init
  *     10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
+ *     20-Sep-2005 BJD  Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -147,7 +148,7 @@ static struct s3c24xx_board h1940_board __initdata = {
 	.devices_count = ARRAY_SIZE(h1940_devices)
 };
 
-void __init h1940_map_io(void)
+static void __init h1940_map_io(void)
 {
 	s3c24xx_init_io(h1940_iodesc, ARRAY_SIZE(h1940_iodesc));
 	s3c24xx_init_clocks(0);
@@ -155,13 +156,13 @@ void __init h1940_map_io(void)
 	s3c24xx_set_board(&h1940_board);
 }
 
-void __init h1940_init_irq(void)
+static void __init h1940_init_irq(void)
 {
 	s3c24xx_init_irq();
 
 }
 
-void __init h1940_init(void)
+static void __init h1940_init(void)
 {
 	set_s3c2410fb_info(&h1940_lcdcfg);
 }
diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index 66bf5bb2b3d..5c0f2b091f9 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -97,7 +97,7 @@ static struct s3c24xx_board n30_board __initdata = {
 	.devices_count = ARRAY_SIZE(n30_devices)
 };
 
-void __init n30_map_io(void)
+static void __init n30_map_io(void)
 {
 	s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 	s3c24xx_init_clocks(0);
@@ -105,14 +105,14 @@ void __init n30_map_io(void)
 	s3c24xx_set_board(&n30_board);
 }
 
-void __init n30_init_irq(void)
+static void __init n30_init_irq(void)
 {
 	s3c24xx_init_irq();
 }
 
 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 
-void __init n30_init(void)
+static void __init n30_init(void)
 {
 	s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
 
diff --git a/arch/arm/mach-s3c2410/mach-nexcoder.c b/arch/arm/mach-s3c2410/mach-nexcoder.c
index d24c242414c..c22f8216032 100644
--- a/arch/arm/mach-s3c2410/mach-nexcoder.c
+++ b/arch/arm/mach-s3c2410/mach-nexcoder.c
@@ -136,7 +136,7 @@ static void __init nexcoder_sensorboard_init(void)
 	s3c2410_gpio_cfgpin(S3C2410_GPF2, S3C2410_GPF2_OUTP); // CAM_GPIO6 => CAM_PWRDN
 }
 
-void __init nexcoder_map_io(void)
+static void __init nexcoder_map_io(void)
 {
 	s3c24xx_init_io(nexcoder_iodesc, ARRAY_SIZE(nexcoder_iodesc));
 	s3c24xx_init_clocks(0);
diff --git a/arch/arm/mach-s3c2410/mach-otom.c b/arch/arm/mach-s3c2410/mach-otom.c
index d901ed492ff..ad1459e402e 100644
--- a/arch/arm/mach-s3c2410/mach-otom.c
+++ b/arch/arm/mach-s3c2410/mach-otom.c
@@ -105,7 +105,7 @@ static struct s3c24xx_board otom11_board __initdata = {
 };
 
 
-void __init otom11_map_io(void)
+static void __init otom11_map_io(void)
 {
 	s3c24xx_init_io(otom11_iodesc, ARRAY_SIZE(otom11_iodesc));
 	s3c24xx_init_clocks(0);
diff --git a/arch/arm/mach-s3c2410/mach-rx3715.c b/arch/arm/mach-s3c2410/mach-rx3715.c
index a73d61c1de4..22d9e070fd6 100644
--- a/arch/arm/mach-s3c2410/mach-rx3715.c
+++ b/arch/arm/mach-s3c2410/mach-rx3715.c
@@ -16,6 +16,7 @@
  *	14-Jan-2005 BJD  Added new clock init
  *	10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
  *	14-Mar-2005 BJD  Fixed __iomem warnings
+ *	20-Sep-2005 BJD  Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -108,7 +109,7 @@ static struct s3c24xx_board rx3715_board __initdata = {
 	.devices_count = ARRAY_SIZE(rx3715_devices)
 };
 
-void __init rx3715_map_io(void)
+static void __init rx3715_map_io(void)
 {
 	s3c24xx_init_io(rx3715_iodesc, ARRAY_SIZE(rx3715_iodesc));
 	s3c24xx_init_clocks(16934000);
@@ -116,7 +117,7 @@ void __init rx3715_map_io(void)
 	s3c24xx_set_board(&rx3715_board);
 }
 
-void __init rx3715_init_irq(void)
+static void __init rx3715_init_irq(void)
 {
 	s3c24xx_init_irq();
 }
diff --git a/arch/arm/mach-s3c2410/mach-smdk2410.c b/arch/arm/mach-s3c2410/mach-smdk2410.c
index 67e903a700d..2eda55a6b67 100644
--- a/arch/arm/mach-s3c2410/mach-smdk2410.c
+++ b/arch/arm/mach-s3c2410/mach-smdk2410.c
@@ -28,6 +28,7 @@
  * Ben Dooks <ben@simtec.co.uk>
  *
  * 10-Mar-2005 LCVR  Changed S3C2410_VA to S3C24XX_VA
+ * 20-Sep-2005 BJD  Added static to non-exported items
  *
  ***********************************************************************/
 
@@ -97,7 +98,7 @@ static struct s3c24xx_board smdk2410_board __initdata = {
 	.devices_count = ARRAY_SIZE(smdk2410_devices)
 };
 
-void __init smdk2410_map_io(void)
+static void __init smdk2410_map_io(void)
 {
 	s3c24xx_init_io(smdk2410_iodesc, ARRAY_SIZE(smdk2410_iodesc));
 	s3c24xx_init_clocks(0);
@@ -105,7 +106,7 @@ void __init smdk2410_map_io(void)
 	s3c24xx_set_board(&smdk2410_board);
 }
 
-void __init smdk2410_init_irq(void)
+static void __init smdk2410_init_irq(void)
 {
 	s3c24xx_init_irq();
 }
diff --git a/arch/arm/mach-s3c2410/mach-smdk2440.c b/arch/arm/mach-s3c2410/mach-smdk2440.c
index 357522106f6..722ef46b630 100644
--- a/arch/arm/mach-s3c2410/mach-smdk2440.c
+++ b/arch/arm/mach-s3c2410/mach-smdk2440.c
@@ -18,6 +18,7 @@
  *	22-Feb-2005 BJD   Updated for 2.6.11-rc5 relesa
  *	10-Mar-2005 LCVR  Replaced S3C2410_VA by S3C24XX_VA
  *	14-Mar-2005 BJD	  void __iomem fixes
+ *	20-Sep-2005 BJD   Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -98,7 +99,7 @@ static struct s3c24xx_board smdk2440_board __initdata = {
 	.devices_count = ARRAY_SIZE(smdk2440_devices)
 };
 
-void __init smdk2440_map_io(void)
+static void __init smdk2440_map_io(void)
 {
 	s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc));
 	s3c24xx_init_clocks(16934400);
@@ -106,7 +107,7 @@ void __init smdk2440_map_io(void)
 	s3c24xx_set_board(&smdk2440_board);
 }
 
-void __init smdk2440_machine_init(void)
+static void __init smdk2440_machine_init(void)
 {
 	/* Configure the LEDs (even if we have no LED support)*/
 
diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c
index 8f9ab2893df..663a7f98fc0 100644
--- a/arch/arm/mach-s3c2410/mach-vr1000.c
+++ b/arch/arm/mach-s3c2410/mach-vr1000.c
@@ -28,6 +28,7 @@
  *     10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
  *     14-Mar-2006 BJD  void __iomem fixes
  *     22-Jun-2006 BJD  Added DM9000 platform information
+ *     20-Sep-2005 BJD  Added static to non-exported items
 */
 
 #include <linux/kernel.h>
@@ -347,7 +348,7 @@ static void vr1000_power_off(void)
 	s3c2410_gpio_setpin(S3C2410_GPB9, 1);
 }
 
-void __init vr1000_map_io(void)
+static void __init vr1000_map_io(void)
 {
 	/* initialise clock sources */
 
diff --git a/arch/arm/mach-sa1100/generic.h b/arch/arm/mach-sa1100/generic.h
index 279e3afa3c3..f085d68e568 100644
--- a/arch/arm/mach-sa1100/generic.h
+++ b/arch/arm/mach-sa1100/generic.h
@@ -39,3 +39,6 @@ extern void sa11x0_set_ssp_data(struct sa11x0_ssp_plat_ops *ops);
 
 struct irda_platform_data;
 void sa11x0_set_irda_data(struct irda_platform_data *irda);
+
+struct mcp_plat_data;
+void sa11x0_set_mcp_data(struct mcp_plat_data *data);
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 0b6c4db44e0..4a884baf3b9 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -233,7 +233,17 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 	if (in_interrupt() || !mm)
 		goto no_context;
 
-	down_read(&mm->mmap_sem);
+	/*
+	 * As per x86, we may deadlock here.  However, since the kernel only
+	 * validly references user space from well defined areas of the code,
+	 * we can bug out early if this is from code which shouldn't.
+	 */
+	if (!down_read_trylock(&mm->mmap_sem)) {
+		if (!user_mode(regs) && !search_exception_tables(regs->ARM_pc))
+			goto no_context;
+		down_read(&mm->mmap_sem);
+	}
+
 	fault = __do_page_fault(mm, addr, fsr, tsk);
 	up_read(&mm->mmap_sem);
 
diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S
index 1d739d282a4..82ec954e45b 100644
--- a/arch/arm/mm/proc-arm1020.S
+++ b/arch/arm/mm/proc-arm1020.S
@@ -509,7 +509,7 @@ cpu_arm1020_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm1020_proc_info,#object
 __arm1020_proc_info:
diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S
index 9b725665b5c..7375fe930f7 100644
--- a/arch/arm/mm/proc-arm1020e.S
+++ b/arch/arm/mm/proc-arm1020e.S
@@ -491,7 +491,7 @@ cpu_arm1020e_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm1020e_proc_info,#object
 __arm1020e_proc_info:
diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S
index 37b70fa21c7..6ca639094d6 100644
--- a/arch/arm/mm/proc-arm1022.S
+++ b/arch/arm/mm/proc-arm1022.S
@@ -473,7 +473,7 @@ cpu_arm1022_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm1022_proc_info,#object
 __arm1022_proc_info:
diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S
index 931b690d1be..10317e4f55d 100644
--- a/arch/arm/mm/proc-arm1026.S
+++ b/arch/arm/mm/proc-arm1026.S
@@ -469,7 +469,7 @@ cpu_arm1026_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm1026_proc_info,#object
 __arm1026_proc_info:
diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S
index d0f1bbb48f6..8e7e1e70ab0 100644
--- a/arch/arm/mm/proc-arm6_7.S
+++ b/arch/arm/mm/proc-arm6_7.S
@@ -332,7 +332,7 @@ cpu_arm710_name:
 
 		.align
 
-		.section ".proc.info", #alloc, #execinstr
+		.section ".proc.info.init", #alloc, #execinstr
 
 		.type	__arm6_proc_info, #object
 __arm6_proc_info:
diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S
index c69c9de3239..a13e0184d34 100644
--- a/arch/arm/mm/proc-arm720.S
+++ b/arch/arm/mm/proc-arm720.S
@@ -222,7 +222,7 @@ cpu_arm720_name:
  * See linux/include/asm-arm/procinfo.h for a definition of this structure.
  */
 	
-		.section ".proc.info", #alloc, #execinstr
+		.section ".proc.info.init", #alloc, #execinstr
 
 		.type	__arm710_proc_info, #object
 __arm710_proc_info:
diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S
index 0f490a0fcb7..d1651389999 100644
--- a/arch/arm/mm/proc-arm920.S
+++ b/arch/arm/mm/proc-arm920.S
@@ -452,7 +452,7 @@ cpu_arm920_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm920_proc_info,#object
 __arm920_proc_info:
diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S
index 62bc34a139e..23b8ed97f4e 100644
--- a/arch/arm/mm/proc-arm922.S
+++ b/arch/arm/mm/proc-arm922.S
@@ -456,7 +456,7 @@ cpu_arm922_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm922_proc_info,#object
 __arm922_proc_info:
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S
index ee49aa2ca78..ee95c52db51 100644
--- a/arch/arm/mm/proc-arm925.S
+++ b/arch/arm/mm/proc-arm925.S
@@ -521,7 +521,7 @@ cpu_arm925_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm925_proc_info,#object
 __arm925_proc_info:
diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S
index bb95cc9fed0..7d042dc20c4 100644
--- a/arch/arm/mm/proc-arm926.S
+++ b/arch/arm/mm/proc-arm926.S
@@ -471,7 +471,7 @@ cpu_arm926_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__arm926_proc_info,#object
 __arm926_proc_info:
diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S
index 34f7e7d3f41..bd330c4075a 100644
--- a/arch/arm/mm/proc-sa110.S
+++ b/arch/arm/mm/proc-sa110.S
@@ -249,7 +249,7 @@ cpu_sa110_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__sa110_proc_info,#object
 __sa110_proc_info:
diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S
index ca14f80d5ab..91b89124c0d 100644
--- a/arch/arm/mm/proc-sa1100.S
+++ b/arch/arm/mm/proc-sa1100.S
@@ -280,7 +280,7 @@ cpu_sa1110_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__sa1100_proc_info,#object
 __sa1100_proc_info:
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index eb34823c9db..caf3b19b167 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -240,7 +240,7 @@ cpu_elf_name:
 	.size	cpu_elf_name, . - cpu_elf_name
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	/*
 	 * Match any ARMv6 processor core.
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index b88de270014..861b3594728 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -578,7 +578,7 @@ cpu_pxa270_name:
 
 	.align
 
-	.section ".proc.info", #alloc, #execinstr
+	.section ".proc.info.init", #alloc, #execinstr
 
 	.type	__80200_proc_info,#object
 __80200_proc_info:
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
index 56405dbfd73..a18983a3c93 100644
--- a/arch/ia64/hp/sim/simscsi.c
+++ b/arch/ia64/hp/sim/simscsi.c
@@ -233,6 +233,23 @@ simscsi_readwrite10 (struct scsi_cmnd *sc, int mode)
 		simscsi_readwrite(sc, mode, offset, ((sc->cmnd[7] << 8) | sc->cmnd[8])*512);
 }
 
+static void simscsi_fillresult(struct scsi_cmnd *sc, char *buf, unsigned len)
+{
+
+	int scatterlen = sc->use_sg;
+	struct scatterlist *slp;
+
+	if (scatterlen == 0)
+		memcpy(sc->request_buffer, buf, len);
+	else for (slp = (struct scatterlist *)sc->buffer; scatterlen-- > 0 && len > 0; slp++) {
+		unsigned thislen = min(len, slp->length);
+
+		memcpy(page_address(slp->page) + slp->offset, buf, thislen);
+		slp++;
+		len -= thislen;
+	}
+}
+
 static int
 simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 {
@@ -240,6 +257,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 	char fname[MAX_ROOT_LEN+16];
 	size_t disk_size;
 	char *buf;
+	char localbuf[36];
 #if DEBUG_SIMSCSI
 	register long sp asm ("sp");
 
@@ -263,7 +281,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 				/* disk doesn't exist... */
 				break;
 			}
-			buf = sc->request_buffer;
+			buf = localbuf;
 			buf[0] = 0;	/* magnetic disk */
 			buf[1] = 0;	/* not a removable medium */
 			buf[2] = 2;	/* SCSI-2 compliant device */
@@ -273,6 +291,7 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 			buf[6] = 0;	/* reserved */
 			buf[7] = 0;	/* various flags */
 			memcpy(buf + 8, "HP      SIMULATED DISK  0.00",  28);
+			simscsi_fillresult(sc, buf, 36);
 			sc->result = GOOD;
 			break;
 
@@ -304,16 +323,13 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 			simscsi_readwrite10(sc, SSC_WRITE);
 			break;
 
-
 		      case READ_CAPACITY:
 			if (desc[target_id] < 0 || sc->request_bufflen < 8) {
 				break;
 			}
-			buf = sc->request_buffer;
-
+			buf = localbuf;
 			disk_size = simscsi_get_disk_size(desc[target_id]);
 
-			/* pretend to be a 1GB disk (partition table contains real stuff): */
 			buf[0] = (disk_size >> 24) & 0xff;
 			buf[1] = (disk_size >> 16) & 0xff;
 			buf[2] = (disk_size >>  8) & 0xff;
@@ -323,13 +339,14 @@ simscsi_queuecommand (struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 			buf[5] = 0;
 			buf[6] = 2;
 			buf[7] = 0;
+			simscsi_fillresult(sc, buf, 8);
 			sc->result = GOOD;
 			break;
 
 		      case MODE_SENSE:
 		      case MODE_SENSE_10:
 			/* sd.c uses this to determine whether disk does write-caching. */
-			memset(sc->request_buffer, 0, 128);
+			simscsi_fillresult(sc, (char *)empty_zero_page, sc->request_bufflen);
 			sc->result = GOOD;
 			break;
 
diff --git a/arch/ia64/kernel/mca_asm.S b/arch/ia64/kernel/mca_asm.S
index 499a065f4e6..db32fc1d393 100644
--- a/arch/ia64/kernel/mca_asm.S
+++ b/arch/ia64/kernel/mca_asm.S
@@ -489,24 +489,27 @@ ia64_state_save:
 	;;
 	st8 [temp1]=r17,16	// pal_min_state
 	st8 [temp2]=r6,16	// prev_IA64_KR_CURRENT
+	mov r6=IA64_KR(CURRENT_STACK)
+	;;
+	st8 [temp1]=r6,16	// prev_IA64_KR_CURRENT_STACK
+	st8 [temp2]=r0,16	// prev_task, starts off as NULL
 	mov r6=cr.ifa
 	;;
-	st8 [temp1]=r0,16	// prev_task, starts off as NULL
-	st8 [temp2]=r12,16	// cr.isr
+	st8 [temp1]=r12,16	// cr.isr
+	st8 [temp2]=r6,16	// cr.ifa
 	mov r12=cr.itir
 	;;
-	st8 [temp1]=r6,16	// cr.ifa
-	st8 [temp2]=r12,16	// cr.itir
+	st8 [temp1]=r12,16	// cr.itir
+	st8 [temp2]=r11,16	// cr.iipa
 	mov r12=cr.iim
 	;;
-	st8 [temp1]=r11,16	// cr.iipa
-	st8 [temp2]=r12,16	// cr.iim
-	mov r6=cr.iha
+	st8 [temp1]=r12,16	// cr.iim
 (p1)	mov r12=IA64_MCA_COLD_BOOT
 (p2)	mov r12=IA64_INIT_WARM_BOOT
+	mov r6=cr.iha
 	;;
-	st8 [temp1]=r6,16	// cr.iha
-	st8 [temp2]=r12		// os_status, default is cold boot
+	st8 [temp2]=r6,16	// cr.iha
+	st8 [temp1]=r12		// os_status, default is cold boot
 	mov r6=IA64_MCA_SAME_CONTEXT
 	;;
 	st8 [temp1]=r6		// context, default is same context
@@ -823,9 +826,12 @@ ia64_state_restore:
 	ld8 r12=[temp1],16	// sal_ra
 	ld8 r9=[temp2],16	// sal_gp
 	;;
-	ld8 r22=[temp1],24	// pal_min_state, virtual.  skip prev_task
+	ld8 r22=[temp1],16	// pal_min_state, virtual
 	ld8 r21=[temp2],16	// prev_IA64_KR_CURRENT
 	;;
+	ld8 r16=[temp1],16	// prev_IA64_KR_CURRENT_STACK
+	ld8 r20=[temp2],16	// prev_task
+	;;
 	ld8 temp3=[temp1],16	// cr.isr
 	ld8 temp4=[temp2],16	// cr.ifa
 	;;
@@ -846,6 +852,45 @@ ia64_state_restore:
 	ld8 r8=[temp1]		// os_status
 	ld8 r10=[temp2]		// context
 
+	/* Wire IA64_TR_CURRENT_STACK to the stack that we are resuming to.  To
+	 * avoid any dependencies on the algorithm in ia64_switch_to(), just
+	 * purge any existing CURRENT_STACK mapping and insert the new one.
+	 *
+	 * r16 contains prev_IA64_KR_CURRENT_STACK, r21 contains
+	 * prev_IA64_KR_CURRENT, these values may have been changed by the C
+	 * code.  Do not use r8, r9, r10, r22, they contain values ready for
+	 * the return to SAL.
+	 */
+
+	mov r15=IA64_KR(CURRENT_STACK)		// physical granule mapped by IA64_TR_CURRENT_STACK
+	;;
+	shl r15=r15,IA64_GRANULE_SHIFT
+	;;
+	dep r15=-1,r15,61,3			// virtual granule
+	mov r18=IA64_GRANULE_SHIFT<<2		// for cr.itir.ps
+	;;
+	ptr.d r15,r18
+	;;
+	srlz.d
+
+	extr.u r19=r21,61,3			// r21 = prev_IA64_KR_CURRENT
+	shl r20=r16,IA64_GRANULE_SHIFT		// r16 = prev_IA64_KR_CURRENT_STACK
+	movl r21=PAGE_KERNEL			// page properties
+	;;
+	mov IA64_KR(CURRENT_STACK)=r16
+	cmp.ne p6,p0=RGN_KERNEL,r19		// new stack is in the kernel region?
+	or r21=r20,r21				// construct PA | page properties
+(p6)	br.spnt 1f				// the dreaded cpu 0 idle task in region 5:(
+	;;
+	mov cr.itir=r18
+	mov cr.ifa=r21
+	mov r20=IA64_TR_CURRENT_STACK
+	;;
+	itr.d dtr[r20]=r21
+	;;
+	srlz.d
+1:
+
 	br.sptk b0
 
 //EndStub//////////////////////////////////////////////////////////////////////
@@ -982,6 +1027,7 @@ ia64_set_kernel_registers:
 	add temp4=temp4, temp1	// &struct ia64_sal_os_state.os_gp
 	add r12=temp1, temp3	// kernel stack pointer on MCA/INIT stack
 	add r13=temp1, r3	// set current to start of MCA/INIT stack
+	add r20=temp1, r3	// physical start of MCA/INIT stack
 	;;
 	ld8 r1=[temp4]		// OS GP from SAL OS state
 	;;
@@ -991,7 +1037,35 @@ ia64_set_kernel_registers:
 	;;
 	mov IA64_KR(CURRENT)=r13
 
-	// FIXME: do I need to wire IA64_KR_CURRENT_STACK and IA64_TR_CURRENT_STACK?
+	/* Wire IA64_TR_CURRENT_STACK to the MCA/INIT handler stack.  To avoid
+	 * any dependencies on the algorithm in ia64_switch_to(), just purge
+	 * any existing CURRENT_STACK mapping and insert the new one.
+	 */
+
+	mov r16=IA64_KR(CURRENT_STACK)		// physical granule mapped by IA64_TR_CURRENT_STACK
+	;;
+	shl r16=r16,IA64_GRANULE_SHIFT
+	;;
+	dep r16=-1,r16,61,3			// virtual granule
+	mov r18=IA64_GRANULE_SHIFT<<2		// for cr.itir.ps
+	;;
+	ptr.d r16,r18
+	;;
+	srlz.d
+
+	shr.u r16=r20,IA64_GRANULE_SHIFT	// r20 = physical start of MCA/INIT stack
+	movl r21=PAGE_KERNEL			// page properties
+	;;
+	mov IA64_KR(CURRENT_STACK)=r16
+	or r21=r20,r21				// construct PA | page properties
+	;;
+	mov cr.itir=r18
+	mov cr.ifa=r13
+	mov r20=IA64_TR_CURRENT_STACK
+	;;
+	itr.d dtr[r20]=r21
+	;;
+	srlz.d
 
 	br.sptk b0
 
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 80f83d6cdbf..f081c60ab20 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -56,8 +56,9 @@ static struct page *page_isolate[MAX_PAGE_ISOLATE];
 static int num_page_isolate = 0;
 
 typedef enum {
-	ISOLATE_NG = 0,
-	ISOLATE_OK = 1
+	ISOLATE_NG,
+	ISOLATE_OK,
+	ISOLATE_NONE
 } isolate_status_t;
 
 /*
@@ -74,7 +75,7 @@ static struct {
  * @paddr:	poisoned memory location
  *
  * Return value:
- *	ISOLATE_OK / ISOLATE_NG
+ *	one of isolate_status_t, ISOLATE_OK/NG/NONE.
  */
 
 static isolate_status_t
@@ -85,7 +86,10 @@ mca_page_isolate(unsigned long paddr)
 
 	/* whether physical address is valid or not */
 	if (!ia64_phys_addr_valid(paddr))
-		return ISOLATE_NG;
+		return ISOLATE_NONE;
+
+	if (!pfn_valid(paddr))
+		return ISOLATE_NONE;
 
 	/* convert physical address to physical page number */
 	p = pfn_to_page(paddr>>PAGE_SHIFT);
@@ -122,10 +126,15 @@ mca_handler_bh(unsigned long paddr)
 		current->pid, current->comm);
 
 	spin_lock(&mca_bh_lock);
-	if (mca_page_isolate(paddr) == ISOLATE_OK) {
+	switch (mca_page_isolate(paddr)) {
+	case ISOLATE_OK:
 		printk(KERN_DEBUG "Page isolation: ( %lx ) success.\n", paddr);
-	} else {
+		break;
+	case ISOLATE_NG:
 		printk(KERN_DEBUG "Page isolation: ( %lx ) failure.\n", paddr);
+		break;
+	default:
+		break;
 	}
 	spin_unlock(&mca_bh_lock);
 
diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile
index abf10dcb787..ce166e3de53 100644
--- a/arch/ppc/kernel/Makefile
+++ b/arch/ppc/kernel/Makefile
@@ -15,9 +15,8 @@ extra-y				+= vmlinux.lds
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o signal.o ptrace.o align.o \
 					semaphore.o syscalls.o setup.o \
-					cputable.o ppc_htab.o
+					cputable.o ppc_htab.o perfmon.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
-obj-$(CONFIG_E500)		+= perfmon.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o
 obj-$(CONFIG_POWER4)		+= cpu_setup_power4.o
 obj-$(CONFIG_MODULES)		+= module.o ppc_ksyms.o
diff --git a/arch/ppc/kernel/perfmon.c b/arch/ppc/kernel/perfmon.c
index 91e2786ea09..f9b27d939f7 100644
--- a/arch/ppc/kernel/perfmon.c
+++ b/arch/ppc/kernel/perfmon.c
@@ -45,7 +45,7 @@ static void dummy_perf(struct pt_regs *regs)
 	mtpmr(PMRN_PMGC0, pmgc0);
 }
 
-#else
+#elif CONFIG_6xx
 /* Ensure exceptions are disabled */
 
 static void dummy_perf(struct pt_regs *regs)
@@ -55,6 +55,10 @@ static void dummy_perf(struct pt_regs *regs)
 	mmcr0 &= ~MMCR0_PMXE;
 	mtspr(SPRN_MMCR0, mmcr0);
 }
+#else
+static void dummy_perf(struct pt_regs *regs)
+{
+}
 #endif
 
 void (*perf_irq)(struct pt_regs *) = dummy_perf;
diff --git a/arch/ppc/platforms/pmac_setup.c b/arch/ppc/platforms/pmac_setup.c
index 12cbc85555d..1ad779ecc8f 100644
--- a/arch/ppc/platforms/pmac_setup.c
+++ b/arch/ppc/platforms/pmac_setup.c
@@ -719,7 +719,8 @@ pmac_declare_of_platform_devices(void)
 	if (np) {
 		for (np = np->child; np != NULL; np = np->sibling)
 			if (strncmp(np->name, "i2c", 3) == 0) {
-				of_platform_device_create(np, "uni-n-i2c");
+				of_platform_device_create(np, "uni-n-i2c",
+							  NULL);
 				break;
 			}
 	}
@@ -727,17 +728,18 @@ pmac_declare_of_platform_devices(void)
 	if (np) {
 		for (np = np->child; np != NULL; np = np->sibling)
 			if (strncmp(np->name, "i2c", 3) == 0) {
-				of_platform_device_create(np, "u3-i2c");
+				of_platform_device_create(np, "u3-i2c",
+							  NULL);
 				break;
 			}
 	}
 
 	np = find_devices("valkyrie");
 	if (np)
-		of_platform_device_create(np, "valkyrie");
+		of_platform_device_create(np, "valkyrie", NULL);
 	np = find_devices("platinum");
 	if (np)
-		of_platform_device_create(np, "platinum");
+		of_platform_device_create(np, "platinum", NULL);
 
 	return 0;
 }
diff --git a/arch/ppc/syslib/of_device.c b/arch/ppc/syslib/of_device.c
index da8a0f2128d..93c7231ea70 100644
--- a/arch/ppc/syslib/of_device.c
+++ b/arch/ppc/syslib/of_device.c
@@ -234,7 +234,9 @@ void of_device_unregister(struct of_device *ofdev)
 	device_unregister(&ofdev->dev);
 }
 
-struct of_device* of_platform_device_create(struct device_node *np, const char *bus_id)
+struct of_device* of_platform_device_create(struct device_node *np,
+					    const char *bus_id,
+					    struct device *parent)
 {
 	struct of_device *dev;
 	u32 *reg;
@@ -247,7 +249,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char *
 	dev->node = of_node_get(np);
 	dev->dma_mask = 0xffffffffUL;
 	dev->dev.dma_mask = &dev->dma_mask;
-	dev->dev.parent = NULL;
+	dev->dev.parent = parent;
 	dev->dev.bus = &of_platform_bus_type;
 	dev->dev.release = of_release_dev;
 
diff --git a/arch/ppc/syslib/ppc85xx_setup.c b/arch/ppc/syslib/ppc85xx_setup.c
index b7242f1bd93..832b8bf99ae 100644
--- a/arch/ppc/syslib/ppc85xx_setup.c
+++ b/arch/ppc/syslib/ppc85xx_setup.c
@@ -184,8 +184,8 @@ mpc85xx_setup_pci1(struct pci_controller *hose)
 	pci->powar1 = 0x80044000 |
 	   (__ilog2(MPC85XX_PCI1_UPPER_MEM - MPC85XX_PCI1_LOWER_MEM + 1) - 1);
 
-	/* Setup outboud IO windows @ MPC85XX_PCI1_IO_BASE */
-	pci->potar2 = 0x00000000;
+	/* Setup outbound IO windows @ MPC85XX_PCI1_IO_BASE */
+	pci->potar2 = (MPC85XX_PCI1_LOWER_IO >> 12) & 0x000fffff;
 	pci->potear2 = 0x00000000;
 	pci->powbar2 = (MPC85XX_PCI1_IO_BASE >> 12) & 0x000fffff;
 	/* Enable, IO R/W */
@@ -235,8 +235,8 @@ mpc85xx_setup_pci2(struct pci_controller *hose)
 	pci->powar1 = 0x80044000 |
 	   (__ilog2(MPC85XX_PCI2_UPPER_MEM - MPC85XX_PCI2_LOWER_MEM + 1) - 1);
 
-	/* Setup outboud IO windows @ MPC85XX_PCI2_IO_BASE */
-	pci->potar2 = 0x00000000;
+	/* Setup outbound IO windows @ MPC85XX_PCI2_IO_BASE */
+	pci->potar2 = (MPC85XX_PCI2_LOWER_IO >> 12) & 0x000fffff;;
 	pci->potear2 = 0x00000000;
 	pci->powbar2 = (MPC85XX_PCI2_IO_BASE >> 12) & 0x000fffff;
 	/* Enable, IO R/W */
diff --git a/arch/ppc64/Makefile b/arch/ppc64/Makefile
index a8877881bb4..40675b3f924 100644
--- a/arch/ppc64/Makefile
+++ b/arch/ppc64/Makefile
@@ -107,7 +107,7 @@ install: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 
 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
-defaultimage-$(CONFIG_PPC_PMAC) := vmlinux
+defaultimage-$(CONFIG_PPC_PMAC) := zImage.vmode
 defaultimage-$(CONFIG_PPC_MAPLE) := zImage
 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 KBUILD_IMAGE := $(defaultimage-y)
diff --git a/arch/ppc64/kernel/of_device.c b/arch/ppc64/kernel/of_device.c
index da580812ddf..9f200f0f2ad 100644
--- a/arch/ppc64/kernel/of_device.c
+++ b/arch/ppc64/kernel/of_device.c
@@ -233,7 +233,9 @@ void of_device_unregister(struct of_device *ofdev)
 	device_unregister(&ofdev->dev);
 }
 
-struct of_device* of_platform_device_create(struct device_node *np, const char *bus_id)
+struct of_device* of_platform_device_create(struct device_node *np,
+					    const char *bus_id,
+					    struct device *parent)
 {
 	struct of_device *dev;
 
@@ -245,7 +247,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char *
 	dev->node = np;
 	dev->dma_mask = 0xffffffffUL;
 	dev->dev.dma_mask = &dev->dma_mask;
-	dev->dev.parent = NULL;
+	dev->dev.parent = parent;
 	dev->dev.bus = &of_platform_bus_type;
 	dev->dev.release = of_release_dev;
 
@@ -259,6 +261,7 @@ struct of_device* of_platform_device_create(struct device_node *np, const char *
 	return dev;
 }
 
+
 EXPORT_SYMBOL(of_match_device);
 EXPORT_SYMBOL(of_platform_bus_type);
 EXPORT_SYMBOL(of_register_driver);
diff --git a/arch/ppc64/kernel/pSeries_iommu.c b/arch/ppc64/kernel/pSeries_iommu.c
index 2b5e622732f..5914f61a152 100644
--- a/arch/ppc64/kernel/pSeries_iommu.c
+++ b/arch/ppc64/kernel/pSeries_iommu.c
@@ -281,8 +281,10 @@ static void iommu_table_setparms(struct pci_controller *phb,
 	tbl->it_offset = phb->dma_window_base_cur >> PAGE_SHIFT;
 	
 	/* Test if we are going over 2GB of DMA space */
-	if (phb->dma_window_base_cur + phb->dma_window_size > (1L << 31))
+	if (phb->dma_window_base_cur + phb->dma_window_size > 0x80000000ul) {
+		udbg_printf("PCI_DMA: Unexpected number of IOAs under this PHB.\n");
 		panic("PCI_DMA: Unexpected number of IOAs under this PHB.\n"); 
+	}
 	
 	phb->dma_window_base_cur += phb->dma_window_size;
 
@@ -326,92 +328,85 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
 
 static void iommu_bus_setup_pSeries(struct pci_bus *bus)
 {
-	struct device_node *dn, *pdn;
-	struct pci_dn *pci;
+	struct device_node *dn;
 	struct iommu_table *tbl;
+	struct device_node *isa_dn, *isa_dn_orig;
+	struct device_node *tmp;
+	struct pci_dn *pci;
+	int children;
 
 	DBG("iommu_bus_setup_pSeries, bus %p, bus->self %p\n", bus, bus->self);
 
-	/* For each (root) bus, we carve up the available DMA space in 256MB
-	 * pieces. Since each piece is used by one (sub) bus/device, that would
-	 * give a maximum of 7 devices per PHB. In most cases, this is plenty.
-	 *
-	 * The exception is on Python PHBs (pre-POWER4). Here we don't have EADS
-	 * bridges below the PHB to allocate the sectioned tables to, so instead
-	 * we allocate a 1GB table at the PHB level.
+	dn = pci_bus_to_OF_node(bus);
+	pci = PCI_DN(dn);
+
+	if (bus->self) {
+		/* This is not a root bus, any setup will be done for the
+		 * device-side of the bridge in iommu_dev_setup_pSeries().
+		 */
+		return;
+	}
+
+	/* Check if the ISA bus on the system is under
+	 * this PHB.
 	 */
+	isa_dn = isa_dn_orig = of_find_node_by_type(NULL, "isa");
 
-	dn = pci_bus_to_OF_node(bus);
-	pci = dn->data;
-
-	if (!bus->self) {
-		/* Root bus */
-		if (is_python(dn)) {
-			unsigned int *iohole;
-
-			DBG("Python root bus %s\n", bus->name);
-
-			iohole = (unsigned int *)get_property(dn, "io-hole", 0);
-
-			if (iohole) {
-				/* On first bus we need to leave room for the
-				 * ISA address space. Just skip the first 256MB
-				 * alltogether. This leaves 768MB for the window.
-				 */
-				DBG("PHB has io-hole, reserving 256MB\n");
-				pci->phb->dma_window_size = 3 << 28;
-				pci->phb->dma_window_base_cur = 1 << 28;
-			} else {
-				/* 1GB window by default */
-				pci->phb->dma_window_size = 1 << 30;
-				pci->phb->dma_window_base_cur = 0;
-			}
-
-			tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
-
-			iommu_table_setparms(pci->phb, dn, tbl);
-			pci->iommu_table = iommu_init_table(tbl);
-		} else {
-			/* Do a 128MB table at root. This is used for the IDE
-			 * controller on some SMP-mode POWER4 machines. It
-			 * doesn't hurt to allocate it on other machines
-			 * -- it'll just be unused since new tables are
-			 * allocated on the EADS level.
-			 *
-			 * Allocate at offset 128MB to avoid having to deal
-			 * with ISA holes; 128MB table for IDE is plenty.
-			 */
-			pci->phb->dma_window_size = 1 << 27;
-			pci->phb->dma_window_base_cur = 1 << 27;
-
-			tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
-
-			iommu_table_setparms(pci->phb, dn, tbl);
-			pci->iommu_table = iommu_init_table(tbl);
-
-			/* All child buses have 256MB tables */
-			pci->phb->dma_window_size = 1 << 28;
-		}
-	} else {
-		pdn = pci_bus_to_OF_node(bus->parent);
+	while (isa_dn && isa_dn != dn)
+		isa_dn = isa_dn->parent;
+
+	if (isa_dn_orig)
+		of_node_put(isa_dn_orig);
 
-		if (!bus->parent->self && !is_python(pdn)) {
-			struct iommu_table *tbl;
-			/* First child and not python means this is the EADS
-			 * level. Allocate new table for this slot with 256MB
-			 * window.
-			 */
+	/* Count number of direct PCI children of the PHB.
+	 * All PCI device nodes have class-code property, so it's
+	 * an easy way to find them.
+	 */
+	for (children = 0, tmp = dn->child; tmp; tmp = tmp->sibling)
+		if (get_property(tmp, "class-code", NULL))
+			children++;
 
-			tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
+	DBG("Children: %d\n", children);
 
-			iommu_table_setparms(pci->phb, dn, tbl);
+	/* Calculate amount of DMA window per slot. Each window must be
+	 * a power of two (due to pci_alloc_consistent requirements).
+	 *
+	 * Keep 256MB aside for PHBs with ISA.
+	 */
 
-			pci->iommu_table = iommu_init_table(tbl);
-		} else {
-			/* Lower than first child or under python, use parent table */
-			pci->iommu_table = PCI_DN(pdn)->iommu_table;
-		}
+	if (!isa_dn) {
+		/* No ISA/IDE - just set window size and return */
+		pci->phb->dma_window_size = 0x80000000ul; /* To be divided */
+
+		while (pci->phb->dma_window_size * children > 0x80000000ul)
+			pci->phb->dma_window_size >>= 1;
+		DBG("No ISA/IDE, window size is 0x%lx\n",
+			pci->phb->dma_window_size);
+		pci->phb->dma_window_base_cur = 0;
+
+		return;
 	}
+
+	/* If we have ISA, then we probably have an IDE
+	 * controller too. Allocate a 128MB table but
+	 * skip the first 128MB to avoid stepping on ISA
+	 * space.
+	 */
+	pci->phb->dma_window_size = 0x8000000ul;
+	pci->phb->dma_window_base_cur = 0x8000000ul;
+
+	tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
+
+	iommu_table_setparms(pci->phb, dn, tbl);
+	pci->iommu_table = iommu_init_table(tbl);
+
+	/* Divide the rest (1.75GB) among the children */
+	pci->phb->dma_window_size = 0x80000000ul;
+	while (pci->phb->dma_window_size * children > 0x70000000ul)
+		pci->phb->dma_window_size >>= 1;
+
+	DBG("ISA/IDE, window size is 0x%lx\n", pci->phb->dma_window_size);
+
 }
 
 
@@ -462,21 +457,36 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
 static void iommu_dev_setup_pSeries(struct pci_dev *dev)
 {
 	struct device_node *dn, *mydn;
+	struct iommu_table *tbl;
+
+	DBG("iommu_dev_setup_pSeries, dev %p (%s)\n", dev, pci_name(dev));
 
-	DBG("iommu_dev_setup_pSeries, dev %p (%s)\n", dev, dev->pretty_name);
-	/* Now copy the iommu_table ptr from the bus device down to the
-	 * pci device_node.  This means get_iommu_table() won't need to search
-	 * up the device tree to find it.
-	 */
 	mydn = dn = pci_device_to_OF_node(dev);
 
+	/* If we're the direct child of a root bus, then we need to allocate
+	 * an iommu table ourselves. The bus setup code should have setup
+	 * the window sizes already.
+	 */
+	if (!dev->bus->self) {
+		DBG(" --> first child, no bridge. Allocating iommu table.\n");
+		tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
+		iommu_table_setparms(PCI_DN(dn)->phb, dn, tbl);
+		PCI_DN(mydn)->iommu_table = iommu_init_table(tbl);
+
+		return;
+	}
+
+	/* If this device is further down the bus tree, search upwards until
+	 * an already allocated iommu table is found and use that.
+	 */
+
 	while (dn && dn->data && PCI_DN(dn)->iommu_table == NULL)
 		dn = dn->parent;
 
 	if (dn && dn->data) {
 		PCI_DN(mydn)->iommu_table = PCI_DN(dn)->iommu_table;
 	} else {
-		DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, dev->pretty_name);
+		DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, pci_name(dev));
 	}
 }
 
@@ -510,7 +520,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
 	int *dma_window = NULL;
 	struct pci_dn *pci;
 
-	DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, dev->pretty_name);
+	DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, pci_name(dev));
 
 	/* dev setup for LPAR is a little tricky, since the device tree might
 	 * contain the dma-window properties per-device and not neccesarily
@@ -532,9 +542,8 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
 	 * slots on POWER4 machines.
 	 */
 	if (dma_window == NULL || pdn->parent == NULL) {
-		/* Fall back to regular (non-LPAR) dev setup */
-		DBG("No dma window for device, falling back to regular setup\n");
-		iommu_dev_setup_pSeries(dev);
+		DBG("No dma window for device, linking to parent\n");
+		PCI_DN(dn)->iommu_table = PCI_DN(pdn)->iommu_table;
 		return;
 	} else {
 		DBG("Found DMA window, allocating table\n");
diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c
index 861138ad092..ff4be1da69d 100644
--- a/arch/ppc64/kernel/pci.c
+++ b/arch/ppc64/kernel/pci.c
@@ -246,11 +246,14 @@ static unsigned int pci_parse_of_flags(u32 addr0)
 	unsigned int flags = 0;
 
 	if (addr0 & 0x02000000) {
-		flags |= IORESOURCE_MEM;
+		flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
+		flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
+		flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
 		if (addr0 & 0x40000000)
-			flags |= IORESOURCE_PREFETCH;
+			flags |= IORESOURCE_PREFETCH
+				 | PCI_BASE_ADDRESS_MEM_PREFETCH;
 	} else if (addr0 & 0x01000000)
-		flags |= IORESOURCE_IO;
+		flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
 	return flags;
 }
 
diff --git a/arch/ppc64/kernel/pmac_setup.c b/arch/ppc64/kernel/pmac_setup.c
index 1f5118078f7..bb0c3bfbb7e 100644
--- a/arch/ppc64/kernel/pmac_setup.c
+++ b/arch/ppc64/kernel/pmac_setup.c
@@ -434,15 +434,23 @@ static int pmac_check_legacy_ioport(unsigned int baseport)
 
 static int __init pmac_declare_of_platform_devices(void)
 {
-	struct device_node *np;
+	struct device_node *np, *npp;
 
-	np = find_devices("u3");
-	if (np) {
-		for (np = np->child; np != NULL; np = np->sibling)
+	npp = of_find_node_by_name(NULL, "u3");
+	if (npp) {
+		for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
 			if (strncmp(np->name, "i2c", 3) == 0) {
-				of_platform_device_create(np, "u3-i2c");
+				of_platform_device_create(np, "u3-i2c", NULL);
+				of_node_put(np);
 				break;
 			}
+		}
+		of_node_put(npp);
+	}
+        npp = of_find_node_by_type(NULL, "smu");
+        if (npp) {
+		of_platform_device_create(npp, "smu", NULL);
+		of_node_put(npp);
 	}
 
 	return 0;
diff --git a/arch/ppc64/kernel/pmac_time.c b/arch/ppc64/kernel/pmac_time.c
index 6c8c99295e7..9d8c97decd3 100644
--- a/arch/ppc64/kernel/pmac_time.c
+++ b/arch/ppc64/kernel/pmac_time.c
@@ -84,7 +84,7 @@ void pmac_get_rtc_time(struct rtc_time *tm)
 
 #ifdef CONFIG_PMAC_SMU
 	case SYS_CTRLER_SMU:
-		smu_get_rtc_time(tm);
+		smu_get_rtc_time(tm, 1);
 		break;
 #endif /* CONFIG_PMAC_SMU */
 	default:
@@ -128,7 +128,7 @@ int pmac_set_rtc_time(struct rtc_time *tm)
 
 #ifdef CONFIG_PMAC_SMU
 	case SYS_CTRLER_SMU:
-		return smu_set_rtc_time(tm);
+		return smu_set_rtc_time(tm, 1);
 #endif /* CONFIG_PMAC_SMU */
 	default:
 		return -ENODEV;
diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c
index 9979919cdf9..f252670874a 100644
--- a/arch/ppc64/kernel/prom_init.c
+++ b/arch/ppc64/kernel/prom_init.c
@@ -1711,6 +1711,7 @@ static void __init flatten_device_tree(void)
 	unsigned long offset = reloc_offset();
 	unsigned long mem_start, mem_end, room;
 	struct boot_param_header *hdr;
+	struct prom_t *_prom = PTRRELOC(&prom);
 	char *namep;
 	u64 *rsvmap;
 
@@ -1765,6 +1766,7 @@ static void __init flatten_device_tree(void)
 	RELOC(dt_struct_end) = PAGE_ALIGN(mem_start);
 
 	/* Finish header */
+	hdr->boot_cpuid_phys = _prom->cpu;
 	hdr->magic = OF_DT_HEADER;
 	hdr->totalsize = RELOC(dt_struct_end) - RELOC(dt_header_start);
 	hdr->off_dt_struct = RELOC(dt_struct_start) - RELOC(dt_header_start);
@@ -1854,7 +1856,6 @@ static void __init prom_find_boot_cpu(void)
 
 	cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
 
-	prom_setprop(cpu_pkg, "linux,boot-cpu", NULL, 0);
 	prom_getprop(cpu_pkg, "reg", &getprop_rval, sizeof(getprop_rval));
 	_prom->cpu = getprop_rval;
 
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index 85ed3188a91..b1c044ca575 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -219,6 +219,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
 
 	case PTRACE_SET_DEBUGREG:
 		ret = ptrace_set_debugreg(child, addr, data);
+		break;
 
 	case PTRACE_DETACH:
 		ret = ptrace_detach(child, data);
diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c
index 29b074505d3..874cf96938f 100644
--- a/arch/ppc64/mm/hash_native.c
+++ b/arch/ppc64/mm/hash_native.c
@@ -342,15 +342,14 @@ static void native_flush_hash_range(unsigned long number, int local)
 	hpte_t *hptep;
 	unsigned long hpte_v;
 	struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
-
-	/* XXX fix for large ptes */
-	unsigned long large = 0;
+	unsigned long large;
 
 	local_irq_save(flags);
 
 	j = 0;
 	for (i = 0; i < number; i++) {
 		va = batch->vaddr[j];
+		large = pte_huge(batch->pte[i]);
 		if (large)
 			vpn = va >> HPAGE_SHIFT;
 		else
diff --git a/arch/ppc64/mm/hugetlbpage.c b/arch/ppc64/mm/hugetlbpage.c
index 338771ec70d..0ea0994ed97 100644
--- a/arch/ppc64/mm/hugetlbpage.c
+++ b/arch/ppc64/mm/hugetlbpage.c
@@ -710,10 +710,13 @@ repeat:
 			hpte_group = ((~hash & htab_hash_mask) *
 				      HPTES_PER_GROUP) & ~0x7UL; 
 			slot = ppc_md.hpte_insert(hpte_group, va, prpn,
-						  HPTE_V_LARGE, rflags);
+						  HPTE_V_LARGE |
+						  HPTE_V_SECONDARY,
+						  rflags);
 			if (slot == -1) {
 				if (mftb() & 0x1)
-					hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL;
+					hpte_group = ((hash & htab_hash_mask) *
+						      HPTES_PER_GROUP)&~0x7UL;
 
 				ppc_md.hpte_remove(hpte_group);
 				goto repeat;
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 3e0badb820c..b4834952785 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -42,19 +42,15 @@
  * executing (see inherit_locked_prom_mappings() rant).
  */
 sparc64_vpte_nucleus:
-	/* Load 0xf0000000, which is LOW_OBP_ADDRESS.  */
-	mov		0xf, %g5
-	sllx		%g5, 28, %g5
-
-	/* Is addr >= LOW_OBP_ADDRESS?  */
+	/* Note that kvmap below has verified that the address is
+	 * in the range MODULES_VADDR --> VMALLOC_END already.  So
+	 * here we need only check if it is an OBP address or not.
+	 */
+	sethi		%hi(LOW_OBP_ADDRESS), %g5
 	cmp		%g4, %g5
 	blu,pn		%xcc, sparc64_vpte_patchme1
 	 mov		0x1, %g5
-
-	/* Load 0x100000000, which is HI_OBP_ADDRESS.  */
 	sllx		%g5, 32, %g5
-
-	/* Is addr < HI_OBP_ADDRESS?  */
 	cmp		%g4, %g5
 	blu,pn		%xcc, obp_iaddr_patch
 	 nop
@@ -156,26 +152,29 @@ obp_daddr_patch:
  * rather, use information saved during inherit_prom_mappings() using 8k
  * pagesize.
  */
+	.align		32
 kvmap:
-	/* Load 0xf0000000, which is LOW_OBP_ADDRESS.  */
-	mov		0xf, %g5
-	sllx		%g5, 28, %g5
+	sethi		%hi(MODULES_VADDR), %g5
+	cmp		%g4, %g5
+	blu,pn		%xcc, longpath
+	 mov		(VMALLOC_END >> 24), %g5
+	sllx		%g5, 24, %g5
+	cmp		%g4, %g5
+	bgeu,pn		%xcc, longpath
+	 nop
 
-	/* Is addr >= LOW_OBP_ADDRESS?  */
+kvmap_check_obp:
+	sethi		%hi(LOW_OBP_ADDRESS), %g5
 	cmp		%g4, %g5
-	blu,pn		%xcc, vmalloc_addr
+	blu,pn		%xcc, kvmap_vmalloc_addr
 	 mov		0x1, %g5
-
-	/* Load 0x100000000, which is HI_OBP_ADDRESS.  */
 	sllx		%g5, 32, %g5
-
-	/* Is addr < HI_OBP_ADDRESS?  */
 	cmp		%g4, %g5
 	blu,pn		%xcc, obp_daddr_patch
 	 nop
 
-vmalloc_addr:
-	/* If we get here, a vmalloc addr accessed, load kernel VPTE.  */
+kvmap_vmalloc_addr:
+	/* If we get here, a vmalloc addr was accessed, load kernel VPTE.  */
 	ldxa		[%g3 + %g6] ASI_N, %g5
 	brgez,pn	%g5, longpath
 	 nop
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 23ad839d113..5efbff90d66 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -30,6 +30,7 @@
 #include <asm/psrcompat.h>
 #include <asm/visasm.h>
 #include <asm/spitfire.h>
+#include <asm/page.h>
 
 /* Returning from ptrace is a bit tricky because the syscall return
  * low level code assumes any value returned which is negative and
@@ -128,20 +129,20 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
 	 * is mapped to in the user's address space, we can skip the
 	 * D-cache flush.
 	 */
-	if ((uaddr ^ kaddr) & (1UL << 13)) {
+	if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) {
 		unsigned long start = __pa(kaddr);
 		unsigned long end = start + len;
 
 		if (tlb_type == spitfire) {
 			for (; start < end; start += 32)
-				spitfire_put_dcache_tag(va & 0x3fe0, 0x0);
+				spitfire_put_dcache_tag(start & 0x3fe0, 0x0);
 		} else {
 			for (; start < end; start += 32)
 				__asm__ __volatile__(
 					"stxa %%g0, [%0] %1\n\t"
 					"membar #Sync"
 					: /* no outputs */
-					: "r" (va),
+					: "r" (start),
 					"i" (ASI_DCACHE_INVALIDATE));
 		}
 	}
diff --git a/arch/sparc64/kernel/una_asm.S b/arch/sparc64/kernel/una_asm.S
index cbb40585253..da48400bcc9 100644
--- a/arch/sparc64/kernel/una_asm.S
+++ b/arch/sparc64/kernel/una_asm.S
@@ -17,7 +17,7 @@ kernel_unaligned_trap_fault:
 __do_int_store:
 	rd	%asi, %o4
 	wr	%o3, 0, %asi
-	ldx	[%o2], %g3
+	mov	%o2, %g3
 	cmp	%o1, 2
 	be,pn	%icc, 2f
 	 cmp	%o1, 4
diff --git a/arch/sparc64/kernel/unaligned.c b/arch/sparc64/kernel/unaligned.c
index da9739f0d43..42718f6a7d3 100644
--- a/arch/sparc64/kernel/unaligned.c
+++ b/arch/sparc64/kernel/unaligned.c
@@ -184,13 +184,14 @@ extern void do_int_load(unsigned long *dest_reg, int size,
 			unsigned long *saddr, int is_signed, int asi);
 	
 extern void __do_int_store(unsigned long *dst_addr, int size,
-			   unsigned long *src_val, int asi);
+			   unsigned long src_val, int asi);
 
 static inline void do_int_store(int reg_num, int size, unsigned long *dst_addr,
-				struct pt_regs *regs, int asi)
+				struct pt_regs *regs, int asi, int orig_asi)
 {
 	unsigned long zero = 0;
-	unsigned long *src_val = &zero;
+	unsigned long *src_val_p = &zero;
+	unsigned long src_val;
 
 	if (size == 16) {
 		size = 8;
@@ -198,7 +199,25 @@ static inline void do_int_store(int reg_num, int size, unsigned long *dst_addr,
 		        (unsigned)fetch_reg(reg_num, regs) : 0)) << 32) |
 			(unsigned)fetch_reg(reg_num + 1, regs);
 	} else if (reg_num) {
-		src_val = fetch_reg_addr(reg_num, regs);
+		src_val_p = fetch_reg_addr(reg_num, regs);
+	}
+	src_val = *src_val_p;
+	if (unlikely(asi != orig_asi)) {
+		switch (size) {
+		case 2:
+			src_val = swab16(src_val);
+			break;
+		case 4:
+			src_val = swab32(src_val);
+			break;
+		case 8:
+			src_val = swab64(src_val);
+			break;
+		case 16:
+		default:
+			BUG();
+			break;
+		};
 	}
 	__do_int_store(dst_addr, size, src_val, asi);
 }
@@ -276,6 +295,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u
 		kernel_mna_trap_fault();
 	} else {
 		unsigned long addr;
+		int orig_asi, asi;
 
 		addr = compute_effective_address(regs, insn,
 						 ((insn >> 25) & 0x1f));
@@ -285,18 +305,48 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u
 		       regs->tpc, dirstrings[dir], addr, size,
 		       regs->u_regs[UREG_RETPC]);
 #endif
+		orig_asi = asi = decode_asi(insn, regs);
+		switch (asi) {
+		case ASI_NL:
+		case ASI_AIUPL:
+		case ASI_AIUSL:
+		case ASI_PL:
+		case ASI_SL:
+		case ASI_PNFL:
+		case ASI_SNFL:
+			asi &= ~0x08;
+			break;
+		};
 		switch (dir) {
 		case load:
 			do_int_load(fetch_reg_addr(((insn>>25)&0x1f), regs),
 				    size, (unsigned long *) addr,
-				    decode_signedness(insn),
-				    decode_asi(insn, regs));
+				    decode_signedness(insn), asi);
+			if (unlikely(asi != orig_asi)) {
+				unsigned long val_in = *(unsigned long *) addr;
+				switch (size) {
+				case 2:
+					val_in = swab16(val_in);
+					break;
+				case 4:
+					val_in = swab32(val_in);
+					break;
+				case 8:
+					val_in = swab64(val_in);
+					break;
+				case 16:
+				default:
+					BUG();
+					break;
+				};
+				*(unsigned long *) addr = val_in;
+			}
 			break;
 
 		case store:
 			do_int_store(((insn>>25)&0x1f), size,
 				     (unsigned long *) addr, regs,
-				     decode_asi(insn, regs));
+				     asi, orig_asi);
 			break;
 
 		default:
diff --git a/arch/um/Makefile b/arch/um/Makefile
index ce987266dac..5b5af95721a 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -53,9 +53,13 @@ SYS_DIR		:= $(ARCH_DIR)/include/sysdep-$(SUBARCH)
 
 # -Dvmap=kernel_vmap affects everything, and prevents anything from
 # referencing the libpcap.o symbol so named.
+#
+# Same things for in6addr_loopback - found in libc.
 
 CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
-	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap
+	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
+	-Din6addr_loopback=kernel_in6addr_loopback
+
 AFLAGS += $(ARCH_INCLUDE)
 
 USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 14a12d6b3df..16e7dc89f61 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -19,18 +19,44 @@
 #include "line.h"
 #include "os.h"
 
-#ifdef CONFIG_NOCONFIG_CHAN
+/* XXX: could well be moved to somewhere else, if needed. */
+static int my_printf(const char * fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
+
+static int my_printf(const char * fmt, ...)
+{
+	/* Yes, can be called on atomic context.*/
+	char *buf = kmalloc(4096, GFP_ATOMIC);
+	va_list args;
+	int r;
+
+	if (!buf) {
+		/* We print directly fmt.
+		 * Yes, yes, yes, feel free to complain. */
+		r = strlen(fmt);
+	} else {
+		va_start(args, fmt);
+		r = vsprintf(buf, fmt, args);
+		va_end(args);
+		fmt = buf;
+	}
 
-/* The printk's here are wrong because we are complaining that there is no
- * output device, but printk is printing to that output device.  The user will
- * never see the error.  printf would be better, except it can't run on a
- * kernel stack because it will overflow it.
- * Use printk for now since that will avoid crashing.
- */
+	if (r)
+		r = os_write_file(1, fmt, r);
+	return r;
+
+}
+
+#ifdef CONFIG_NOCONFIG_CHAN
+/* Despite its name, there's no added trailing newline. */
+static int my_puts(const char * buf)
+{
+	return os_write_file(1, buf, strlen(buf));
+}
 
 static void *not_configged_init(char *str, int device, struct chan_opts *opts)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(NULL);
 }
@@ -38,27 +64,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts)
 static int not_configged_open(int input, int output, int primary, void *data,
 			      char **dev_out)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(-ENODEV);
 }
 
 static void not_configged_close(int fd, void *data)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 }
 
 static int not_configged_read(int fd, char *c_out, void *data)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(-EIO);
 }
 
 static int not_configged_write(int fd, const char *buf, int len, void *data)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(-EIO);
 }
@@ -66,7 +92,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data)
 static int not_configged_console_write(int fd, const char *buf, int len,
 				       void *data)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(-EIO);
 }
@@ -74,14 +100,14 @@ static int not_configged_console_write(int fd, const char *buf, int len,
 static int not_configged_window_size(int fd, void *data, unsigned short *rows,
 				     unsigned short *cols)
 {
-	printk(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 	return(-ENODEV);
 }
 
 static void not_configged_free(void *data)
 {
-	printf(KERN_ERR "Using a channel type which is configured out of "
+	my_puts("Using a channel type which is configured out of "
 	       "UML\n");
 }
 
@@ -457,7 +483,7 @@ static struct chan *parse_chan(char *str, int pri, int device,
 		}
 	}
 	if(ops == NULL){
-		printk(KERN_ERR "parse_chan couldn't parse \"%s\"\n", 
+		my_printf("parse_chan couldn't parse \"%s\"\n",
 		       str);
 		return(NULL);
 	}
@@ -465,7 +491,7 @@ static struct chan *parse_chan(char *str, int pri, int device,
 	data = (*ops->init)(str, device, opts);
 	if(data == NULL) return(NULL);
 
-	chan = kmalloc(sizeof(*chan), GFP_KERNEL);
+	chan = kmalloc(sizeof(*chan), GFP_ATOMIC);
 	if(chan == NULL) return(NULL);
 	*chan = ((struct chan) { .list	 	= LIST_HEAD_INIT(chan->list),
 				 .primary	= 1,
diff --git a/arch/um/drivers/mconsole_user.c b/arch/um/drivers/mconsole_user.c
index 310c1f823f2..04383f98f4d 100644
--- a/arch/um/drivers/mconsole_user.c
+++ b/arch/um/drivers/mconsole_user.c
@@ -23,7 +23,7 @@ static struct mconsole_command commands[] = {
 	{ "reboot", mconsole_reboot, MCONSOLE_PROC },
 	{ "config", mconsole_config, MCONSOLE_PROC },
 	{ "remove", mconsole_remove, MCONSOLE_PROC },
-	{ "sysrq", mconsole_sysrq, MCONSOLE_INTR },
+	{ "sysrq", mconsole_sysrq, MCONSOLE_PROC },
 	{ "help", mconsole_help, MCONSOLE_INTR },
 	{ "cad", mconsole_cad, MCONSOLE_INTR },
 	{ "stop", mconsole_stop, MCONSOLE_PROC },
diff --git a/arch/um/include/common-offsets.h b/arch/um/include/common-offsets.h
index 0aa620970ad..782ac3a3baf 100644
--- a/arch/um/include/common-offsets.h
+++ b/arch/um/include/common-offsets.h
@@ -12,4 +12,6 @@ DEFINE_STR(UM_KERN_WARNING, KERN_WARNING);
 DEFINE_STR(UM_KERN_NOTICE, KERN_NOTICE);
 DEFINE_STR(UM_KERN_INFO, KERN_INFO);
 DEFINE_STR(UM_KERN_DEBUG, KERN_DEBUG);
-DEFINE(HOST_ELF_CLASS, ELF_CLASS);
+DEFINE(UM_ELF_CLASS, ELF_CLASS);
+DEFINE(UM_ELFCLASS32, ELFCLASS32);
+DEFINE(UM_ELFCLASS64, ELFCLASS64);
diff --git a/arch/um/include/user.h b/arch/um/include/user.h
index 57ee9e26122..0f865ef4691 100644
--- a/arch/um/include/user.h
+++ b/arch/um/include/user.h
@@ -14,7 +14,9 @@ extern void *um_kmalloc_atomic(int size);
 extern void kfree(void *ptr);
 extern int in_aton(char *str);
 extern int open_gdb_chan(void);
-extern int strlcpy(char *, const char *, int);
+/* These use size_t, however unsigned long is correct on both i386 and x86_64. */
+extern unsigned long strlcpy(char *, const char *, unsigned long);
+extern unsigned long strlcat(char *, const char *, unsigned long);
 extern void *um_vmalloc(int size);
 extern void vfree(void *ptr);
 
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c
index 39cf568ccfa..ea65db679e9 100644
--- a/arch/um/kernel/process_kern.c
+++ b/arch/um/kernel/process_kern.c
@@ -82,7 +82,8 @@ unsigned long alloc_stack(int order, int atomic)
 	unsigned long page;
 	int flags = GFP_KERNEL;
 
-	if(atomic) flags |= GFP_ATOMIC;
+	if (atomic)
+		flags = GFP_ATOMIC;
 	page = __get_free_pages(flags, order);
 	if(page == 0)
 		return(0);
diff --git a/arch/um/kernel/sigio_user.c b/arch/um/kernel/sigio_user.c
index e89218958f3..a52751108aa 100644
--- a/arch/um/kernel/sigio_user.c
+++ b/arch/um/kernel/sigio_user.c
@@ -340,7 +340,7 @@ static int setup_initial_poll(int fd)
 {
 	struct pollfd *p;
 
-	p = um_kmalloc(sizeof(struct pollfd));
+	p = um_kmalloc_atomic(sizeof(struct pollfd));
 	if(p == NULL){
 		printk("setup_initial_poll : failed to allocate poll\n");
 		return(-1);
diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h
index 6ee3f3902e6..7da0c2def0e 100644
--- a/arch/um/kernel/skas/include/uaccess-skas.h
+++ b/arch/um/kernel/skas/include/uaccess-skas.h
@@ -18,12 +18,6 @@
 	  ((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
 	  ((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
 
-static inline int verify_area_skas(int type, const void __user * addr,
-                                   unsigned long size)
-{
-	return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
-}
-
 extern int copy_from_user_skas(void *to, const void __user *from, int n);
 extern int copy_to_user_skas(void __user *to, const void *from, int n);
 extern int strncpy_from_user_skas(char *dst, const char __user *src, int count);
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index 0a562c3c0fd..f5b0636f9ad 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -193,12 +193,12 @@ void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
                 r = pte_read(*npte);
                 w = pte_write(*npte);
                 x = pte_exec(*npte);
-                if(!pte_dirty(*npte))
-                        w = 0;
-                if(!pte_young(*npte)){
-                        r = 0;
-                        w = 0;
-                }
+		if (!pte_young(*npte)) {
+			r = 0;
+			w = 0;
+		} else if (!pte_dirty(*npte)) {
+			w = 0;
+		}
                 if(force || pte_newpage(*npte)){
                         if(pte_present(*npte))
 			  ret = add_mmap(addr,
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index 87cc6fd76ce..d297429ac36 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -18,6 +18,7 @@
 #include "asm/a.out.h"
 #include "asm/current.h"
 #include "asm/irq.h"
+#include "sysdep/sigcontext.h"
 #include "user_util.h"
 #include "kern_util.h"
 #include "kern.h"
@@ -39,6 +40,12 @@ int handle_page_fault(unsigned long address, unsigned long ip,
 	int err = -EFAULT;
 
 	*code_out = SEGV_MAPERR;
+
+	/* If the fault was during atomic operation, don't take the fault, just
+	 * fail. */
+	if (in_atomic())
+		goto out_nosemaphore;
+
 	down_read(&mm->mmap_sem);
 	vma = find_vma(mm, address);
 	if(!vma) 
@@ -89,6 +96,7 @@ survive:
 	flush_tlb_page(vma, address);
 out:
 	up_read(&mm->mmap_sem);
+out_nosemaphore:
 	return(err);
 
 /*
@@ -125,7 +133,15 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
         }
 	else if(current->mm == NULL)
 		panic("Segfault with no mm");
-	err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
+
+	if (SEGV_IS_FIXABLE(&fi))
+		err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
+	else {
+		err = -EFAULT;
+		/* A thread accessed NULL, we get a fault, but CR2 is invalid.
+		 * This code is used in __do_copy_from_user() of TT mode. */
+		address = 0;
+	}
 
 	catcher = current->thread.fault_catcher;
 	if(!err)
diff --git a/arch/um/kernel/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h
index aa6db384af8..dc2ebfa8c54 100644
--- a/arch/um/kernel/tt/include/uaccess-tt.h
+++ b/arch/um/kernel/tt/include/uaccess-tt.h
@@ -33,12 +33,6 @@ extern unsigned long uml_physmem;
          (((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) && \
           (under_task_size(addr, size) || is_stack(addr, size))))
 
-static inline int verify_area_tt(int type, const void __user * addr,
-                                 unsigned long size)
-{
-	return(access_ok_tt(type, addr, size) ? 0 : -EFAULT);
-}
-
 extern unsigned long get_fault_addr(void);
 
 extern int __do_copy_from_user(void *to, const void *from, int n,
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index 0de05a268b2..cfaa373a6e7 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -23,10 +23,11 @@
 #include "mem_user.h"
 #include "tlb.h"
 #include "mode.h"
+#include "mode_kern.h"
 #include "init.h"
 #include "tt.h"
 
-int switch_to_tt(void *prev, void *next, void *last)
+void switch_to_tt(void *prev, void *next)
 {
 	struct task_struct *from, *to, *prev_sched;
 	unsigned long flags;
diff --git a/arch/um/kernel/tt/uaccess_user.c b/arch/um/kernel/tt/uaccess_user.c
index f01475512ec..8c220f054b6 100644
--- a/arch/um/kernel/tt/uaccess_user.c
+++ b/arch/um/kernel/tt/uaccess_user.c
@@ -22,8 +22,15 @@ int __do_copy_from_user(void *to, const void *from, int n,
 			       __do_copy, &faulted);
 	TASK_REGS(get_current())->tt = save;
 
-	if(!faulted) return(0);
-	else return(n - (fault - (unsigned long) from));
+	if(!faulted)
+		return 0;
+	else if (fault)
+		return n - (fault - (unsigned long) from);
+	else
+		/* In case of a general protection fault, we don't have the
+		 * fault address, so NULL is used instead. Pretend we didn't
+		 * copy anything. */
+		return n;
 }
 
 static void __do_strncpy(void *dst, const void *src, int count)
diff --git a/arch/um/kernel/umid.c b/arch/um/kernel/umid.c
index 186c2888501..0b21d59ba0c 100644
--- a/arch/um/kernel/umid.c
+++ b/arch/um/kernel/umid.c
@@ -31,6 +31,8 @@ static char *uml_dir = UML_DIR;
 /* Changed by set_umid */
 static int umid_is_random = 1;
 static int umid_inited = 0;
+/* Have we created the files? Should we remove them? */
+static int umid_owned = 0;
 
 static int make_umid(int (*printer)(const char *fmt, ...));
 
@@ -82,20 +84,21 @@ int __init umid_file_name(char *name, char *buf, int len)
 
 extern int tracing_pid;
 
-static int __init create_pid_file(void)
+static void __init create_pid_file(void)
 {
 	char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
 	char pid[sizeof("nnnnn\0")];
 	int fd, n;
 
-	if(umid_file_name("pid", file, sizeof(file))) return 0;
+	if(umid_file_name("pid", file, sizeof(file)))
+		return;
 
 	fd = os_open_file(file, of_create(of_excl(of_rdwr(OPENFLAGS()))), 
 			  0644);
 	if(fd < 0){
 		printf("Open of machine pid file \"%s\" failed: %s\n",
 		       file, strerror(-fd));
-		return 0;
+		return;
 	}
 
 	sprintf(pid, "%d\n", os_getpid());
@@ -103,7 +106,6 @@ static int __init create_pid_file(void)
 	if(n != strlen(pid))
 		printf("Write of pid file failed - err = %d\n", -n);
 	os_close_file(fd);
-	return 0;
 }
 
 static int actually_do_remove(char *dir)
@@ -147,7 +149,8 @@ static int actually_do_remove(char *dir)
 void remove_umid_dir(void)
 {
 	char dir[strlen(uml_dir) + UMID_LEN + 1];
-	if(!umid_inited) return;
+	if (!umid_owned)
+		return;
 
 	sprintf(dir, "%s%s", uml_dir, umid);
 	actually_do_remove(dir);
@@ -155,11 +158,12 @@ void remove_umid_dir(void)
 
 char *get_umid(int only_if_set)
 {
-	if(only_if_set && umid_is_random) return(NULL);
-	return(umid);
+	if(only_if_set && umid_is_random)
+		return NULL;
+	return umid;
 }
 
-int not_dead_yet(char *dir)
+static int not_dead_yet(char *dir)
 {
 	char file[strlen(uml_dir) + UMID_LEN + sizeof("/pid\0")];
 	char pid[sizeof("nnnnn\0")], *end;
@@ -193,7 +197,8 @@ int not_dead_yet(char *dir)
 		   (p == CHOOSE_MODE(tracing_pid, os_getpid())))
 			dead = 1;
 	}
-	if(!dead) return(1);
+	if(!dead)
+		return(1);
 	return(actually_do_remove(dir));
 }
 
@@ -232,16 +237,13 @@ static int __init make_uml_dir(void)
 		strlcpy(dir, home, sizeof(dir));
 		uml_dir++;
 	}
+	strlcat(dir, uml_dir, sizeof(dir));
 	len = strlen(dir);
-	strncat(dir, uml_dir, sizeof(dir) - len);
-	len = strlen(dir);
-	if((len > 0) && (len < sizeof(dir) - 1) && (dir[len - 1] != '/')){
-		dir[len] = '/';
-		dir[len + 1] = '\0';
-	}
+	if (len > 0 && dir[len - 1] != '/')
+		strlcat(dir, "/", sizeof(dir));
 
 	uml_dir = malloc(strlen(dir) + 1);
-	if(uml_dir == NULL){
+	if (uml_dir == NULL) {
 		printf("make_uml_dir : malloc failed, errno = %d\n", errno);
 		exit(1);
 	}
@@ -286,6 +288,7 @@ static int __init make_umid(int (*printer)(const char *fmt, ...))
 		if(errno == EEXIST){
 			if(not_dead_yet(tmp)){
 				(*printer)("umid '%s' is in use\n", umid);
+				umid_owned = 0;
 				return(-1);
 			}
 			err = mkdir(tmp, 0777);
@@ -296,7 +299,8 @@ static int __init make_umid(int (*printer)(const char *fmt, ...))
 		return(-1);
 	}
 
-	return(0);
+	umid_owned = 1;
+	return 0;
 }
 
 __uml_setup("uml_dir=", set_uml_dir,
@@ -309,7 +313,8 @@ static int __init make_umid_setup(void)
 	/* one function with the ordering we need ... */
 	make_uml_dir();
 	make_umid(printf);
-	return create_pid_file();
+	create_pid_file();
+	return 0;
 }
 __uml_postsetup(make_umid_setup);
 
diff --git a/arch/um/kernel/user_util.c b/arch/um/kernel/user_util.c
index a25f3ea11fd..41d17c71511 100644
--- a/arch/um/kernel/user_util.c
+++ b/arch/um/kernel/user_util.c
@@ -128,6 +128,12 @@ void setup_machinename(char *machine_out)
 	struct utsname host;
 
 	uname(&host);
+#if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT)
+	if (!strcmp(host.machine, "x86_64")) {
+		strcpy(machine_out, "i686");
+		return;
+	}
+#endif
 	strcpy(machine_out, host.machine);
 }
 
diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c
index 298d5632128..f6e64026f99 100644
--- a/arch/um/os-Linux/aio.c
+++ b/arch/um/os-Linux/aio.c
@@ -144,6 +144,7 @@ static int aio_thread(void *arg)
                                "errno = %d\n", errno);
                 }
                 else {
+			/* This is safe as we've just a pointer here. */
 			aio = (struct aio_context *) (long) event.data;
 			if(update_aio(aio, event.res)){
 				do_aio(ctx, aio);
diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c
index e770cb02957..ab33cb3c74e 100644
--- a/arch/um/os-Linux/elf_aux.c
+++ b/arch/um/os-Linux/elf_aux.c
@@ -14,7 +14,8 @@
 #include "mem_user.h"
 #include <kernel-offsets.h>
 
-#if HOST_ELF_CLASS == ELFCLASS32
+/* Use the one from the kernel - the host may miss it, if having old headers. */
+#if UM_ELF_CLASS == UM_ELFCLASS32
 typedef Elf32_auxv_t elf_auxv_t;
 #else
 typedef Elf64_auxv_t elf_auxv_t;
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index d32413e4b4c..d9c52387c4a 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -3,6 +3,7 @@
  * Licensed under the GPL
  */
 
+#include <unistd.h>
 #include <stdio.h>
 #include <errno.h>
 #include <signal.h>
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index bd3c34aa52e..36b5c2c1328 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -83,6 +83,7 @@ int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)
 			goto out;
 		}
 		p = buf;
+		break;
 	default:
 		res = -ENOSYS;
 		goto out;
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 0969d570f3b..21afa69a086 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -308,7 +308,7 @@ config HPET_TIMER
 	  present.  The HPET provides a stable time base on SMP
 	  systems, unlike the TSC, but it is more expensive to access,
 	  as it is off-chip.  You can find the HPET spec at
-	  <http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.
+	  <http://www.intel.com/hardwaredesign/hpetspec.htm>.
 
 config X86_PM_TIMER
 	bool "PM timer"
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 09887c96e9a..de19501aa80 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -402,8 +402,8 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 	__pci_mmap_set_flags(dev, vma, mmap_state);
 	__pci_mmap_set_pgprot(dev, vma, mmap_state, write_combine);
 
-	ret = io_remap_page_range(vma, vma->vm_start, vma->vm_pgoff<<PAGE_SHIFT,
-			       vma->vm_end - vma->vm_start, vma->vm_page_prot);
+	ret = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+			         vma->vm_end - vma->vm_start,vma->vm_page_prot);
 
 	return ret;
 }
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
index cf136278444..03674daabc6 100644
--- a/arch/xtensa/kernel/platform.c
+++ b/arch/xtensa/kernel/platform.c
@@ -39,7 +39,7 @@ _F(int,  pcibios_fixup, (void), { return 0; });
 _F(int, get_rtc_time, (time_t* t), { return 0; });
 _F(int, set_rtc_time, (time_t t), { return 0; });
 
-#if CONFIG_XTENSA_CALIBRATE_CCOUNT
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 _F(void, calibrate_ccount, (void),
 {
   printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index c83bb0d4178..08ef6d82ee5 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -457,7 +457,7 @@ int
 dump_task_fpu(struct pt_regs *regs, struct task_struct *task, elf_fpregset_t *r)
 {
 /* see asm/coprocessor.h for this magic number 16 */
-#if TOTAL_CPEXTRA_SIZE > 16
+#if XTENSA_CP_EXTRA_SIZE > 16
 	do_save_fpregs (r, regs, task);
 
 	/*  For now, bit 16 means some extra state may be present:  */
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 1f5bf5d624e..513ed8d6776 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -304,7 +304,7 @@ void __init setup_arch(char **cmdline_p)
 # endif
 #endif
 
-#if CONFIG_PCI
+#ifdef CONFIG_PCI
 	platform_pcibios_init();
 #endif
 }
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index dc42cede939..e252b61e45a 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -182,7 +182,7 @@ restore_cpextra (struct _cpstate *buf)
 
 	struct task_struct *tsk = current;
 	release_all_cp(tsk);
-	return __copy_from_user(tsk->thread.cpextra, buf, TOTAL_CPEXTRA_SIZE);
+	return __copy_from_user(tsk->thread.cpextra, buf, XTENSA_CP_EXTRA_SIZE);
 #endif
 	return 0;
 }
diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 1ac7d5ce745..8e423d1335c 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -68,7 +68,7 @@ void __init time_init(void)
 	 * speed for the CALIBRATE.
 	 */
 
-#if CONFIG_XTENSA_CALIBRATE_CCOUNT
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
 	printk("Calibrating CPU frequency ");
 	platform_calibrate_ccount();
 	printk("%d.%02d MHz\n", (int)ccount_per_jiffy/(1000000/HZ),
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 56aace84aae..5a91d6c9e66 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -239,7 +239,7 @@ void __init mem_init(void)
 	high_memory = (void *) __va(max_mapnr << PAGE_SHIFT);
 	highmemsize = 0;
 
-#if CONFIG_HIGHMEM
+#ifdef CONFIG_HIGHMEM
 #error HIGHGMEM not implemented in init.c
 #endif