Merge commit 'v2.6.35' into perf/core

Conflicts:
	tools/perf/Makefile
	tools/perf/util/hist.c

Merge reason: Resolve the conflicts and update to latest upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

62 files changed, 364 insertions, 240 deletions

diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 53faa9063a03..864a002137fe 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -71,6 +71,9 @@ targets       := vmlinux vmlinux.lds \
 		 piggy.$(suffix_y) piggy.$(suffix_y).o \
 		 font.o font.c head.o misc.o $(OBJS)
 
+# Make sure files are removed during clean
+extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
+
 ifeq ($(CONFIG_FUNCTION_TRACER),y)
 ORIG_CFLAGS := $(KBUILD_CFLAGS)
 KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 6f80665f477e..9eaf65f43642 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -1028,13 +1028,12 @@ static int sa1111_remove(struct platform_device *pdev)
 	struct sa1111 *sachip = platform_get_drvdata(pdev);
 
 	if (sachip) {
-		__sa1111_remove(sachip);
-		platform_set_drvdata(pdev, NULL);
-
 #ifdef CONFIG_PM
 		kfree(sachip->saved_state);
 		sachip->saved_state = NULL;
 #endif
+		__sa1111_remove(sachip);
+		platform_set_drvdata(pdev, NULL);
 	}
 
 	return 0;
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index c980156f3263..1261b1f928d9 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -26,6 +26,7 @@
 #include <linux/types.h>
 #include <asm/byteorder.h>
 #include <asm/memory.h>
+#include <asm/system.h>
 
 /*
  * ISA I/O bus memory addresses are 1:1 with the physical address.
@@ -179,25 +180,38 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
  * IO port primitives for more information.
  */
 #ifdef __mem_pci
-#define readb(c) ({ __u8  __v = __raw_readb(__mem_pci(c)); __v; })
-#define readw(c) ({ __u16 __v = le16_to_cpu((__force __le16) \
+#define readb_relaxed(c) ({ u8  __v = __raw_readb(__mem_pci(c)); __v; })
+#define readw_relaxed(c) ({ u16 __v = le16_to_cpu((__force __le16) \
 					__raw_readw(__mem_pci(c))); __v; })
-#define readl(c) ({ __u32 __v = le32_to_cpu((__force __le32) \
+#define readl_relaxed(c) ({ u32 __v = le32_to_cpu((__force __le32) \
 					__raw_readl(__mem_pci(c))); __v; })
-#define readb_relaxed(addr) readb(addr)
-#define readw_relaxed(addr) readw(addr)
-#define readl_relaxed(addr) readl(addr)
+
+#define writeb_relaxed(v,c)	((void)__raw_writeb(v,__mem_pci(c)))
+#define writew_relaxed(v,c)	((void)__raw_writew((__force u16) \
+					cpu_to_le16(v),__mem_pci(c)))
+#define writel_relaxed(v,c)	((void)__raw_writel((__force u32) \
+					cpu_to_le32(v),__mem_pci(c)))
+
+#ifdef CONFIG_ARM_DMA_MEM_BUFFERABLE
+#define __iormb()		rmb()
+#define __iowmb()		wmb()
+#else
+#define __iormb()		do { } while (0)
+#define __iowmb()		do { } while (0)
+#endif
+
+#define readb(c)		({ u8  __v = readb_relaxed(c); __iormb(); __v; })
+#define readw(c)		({ u16 __v = readw_relaxed(c); __iormb(); __v; })
+#define readl(c)		({ u32 __v = readl_relaxed(c); __iormb(); __v; })
+
+#define writeb(v,c)		({ __iowmb(); writeb_relaxed(v,c); })
+#define writew(v,c)		({ __iowmb(); writew_relaxed(v,c); })
+#define writel(v,c)		({ __iowmb(); writel_relaxed(v,c); })
 
 #define readsb(p,d,l)		__raw_readsb(__mem_pci(p),d,l)
 #define readsw(p,d,l)		__raw_readsw(__mem_pci(p),d,l)
 #define readsl(p,d,l)		__raw_readsl(__mem_pci(p),d,l)
 
-#define writeb(v,c)		__raw_writeb(v,__mem_pci(c))
-#define writew(v,c)		__raw_writew((__force __u16) \
-					cpu_to_le16(v),__mem_pci(c))
-#define writel(v,c)		__raw_writel((__force __u32) \
-					cpu_to_le32(v),__mem_pci(c))
-
 #define writesb(p,d,l)		__raw_writesb(__mem_pci(p),d,l)
 #define writesw(p,d,l)		__raw_writesw(__mem_pci(p),d,l)
 #define writesl(p,d,l)		__raw_writesl(__mem_pci(p),d,l)
@@ -244,13 +258,13 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
  * io{read,write}{8,16,32} macros
  */
 #ifndef ioread8
-#define ioread8(p)	({ unsigned int __v = __raw_readb(p); __v; })
-#define ioread16(p)	({ unsigned int __v = le16_to_cpu((__force __le16)__raw_readw(p)); __v; })
-#define ioread32(p)	({ unsigned int __v = le32_to_cpu((__force __le32)__raw_readl(p)); __v; })
+#define ioread8(p)	({ unsigned int __v = __raw_readb(p); __iormb(); __v; })
+#define ioread16(p)	({ unsigned int __v = le16_to_cpu((__force __le16)__raw_readw(p)); __iormb(); __v; })
+#define ioread32(p)	({ unsigned int __v = le32_to_cpu((__force __le32)__raw_readl(p)); __iormb(); __v; })
 
-#define iowrite8(v,p)	__raw_writeb(v, p)
-#define iowrite16(v,p)	__raw_writew((__force __u16)cpu_to_le16(v), p)
-#define iowrite32(v,p)	__raw_writel((__force __u32)cpu_to_le32(v), p)
+#define iowrite8(v,p)	({ __iowmb(); (void)__raw_writeb(v, p); })
+#define iowrite16(v,p)	({ __iowmb(); (void)__raw_writew((__force __u16)cpu_to_le16(v), p); })
+#define iowrite32(v,p)	({ __iowmb(); (void)__raw_writel((__force __u32)cpu_to_le32(v), p); })
 
 #define ioread8_rep(p,d,c)	__raw_readsb(p,d,c)
 #define ioread16_rep(p,d,c)	__raw_readsw(p,d,c)
diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S
index 59ff6fdc1e63..7d08b43d2c0e 100644
--- a/arch/arm/lib/csumpartialcopyuser.S
+++ b/arch/arm/lib/csumpartialcopyuser.S
@@ -71,7 +71,7 @@
 		.pushsection .fixup,"ax"
 		.align	4
 9001:		mov	r4, #-EFAULT
-		ldr	r5, [fp, #4]		@ *err_ptr
+		ldr	r5, [sp, #8*4]		@ *err_ptr
 		str	r4, [r5]
 		ldmia	sp, {r1, r2}		@ retrieve dst, len
 		add	r2, r2, r1
diff --git a/arch/arm/mach-clps711x/include/mach/debug-macro.S b/arch/arm/mach-clps711x/include/mach/debug-macro.S
index fedd8076a689..072cc6b61ba3 100644
--- a/arch/arm/mach-clps711x/include/mach/debug-macro.S
+++ b/arch/arm/mach-clps711x/include/mach/debug-macro.S
@@ -11,6 +11,7 @@
  *
 */
 
+#include <mach/hardware.h>
 #include <asm/hardware/clps7111.h>
 
 		.macro	addruart, rx, tmp
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 2ec3095ffb7b..b280efb1fa12 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -25,6 +25,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/tps6507x.h>
 #include <linux/mfd/tps6507x.h>
 #include <linux/input/tps6507x-ts.h>
 
@@ -469,6 +470,11 @@ struct regulator_consumer_supply tps65070_ldo2_consumers[] = {
 	},
 };
 
+/* We take advantage of the fact that both defdcdc{2,3} are tied high */
+static struct tps6507x_reg_platform_data tps6507x_platform_data = {
+	.defdcdc_default = true,
+};
+
 struct regulator_init_data tps65070_regulator_data[] = {
 	/* dcdc1 */
 	{
@@ -494,6 +500,7 @@ struct regulator_init_data tps65070_regulator_data[] = {
 		},
 		.num_consumer_supplies = ARRAY_SIZE(tps65070_dcdc2_consumers),
 		.consumer_supplies = tps65070_dcdc2_consumers,
+		.driver_data = &tps6507x_platform_data,
 	},
 
 	/* dcdc3 */
@@ -507,6 +514,7 @@ struct regulator_init_data tps65070_regulator_data[] = {
 		},
 		.num_consumer_supplies = ARRAY_SIZE(tps65070_dcdc3_consumers),
 		.consumer_supplies = tps65070_dcdc3_consumers,
+		.driver_data = &tps6507x_platform_data,
 	},
 
 	/* ldo1 */
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index e3bc3f6f6b10..88b3dd89be89 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -232,7 +232,7 @@ EXPORT_SYMBOL(__bus_to_virt);
 
 unsigned long __pfn_to_bus(unsigned long pfn)
 {
-	return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET));
+	return __pfn_to_phys(pfn) + (fb_bus_sdram_offset() - PHYS_OFFSET);
 }
 EXPORT_SYMBOL(__pfn_to_bus);
 
diff --git a/arch/arm/mach-h720x/include/mach/debug-macro.S b/arch/arm/mach-h720x/include/mach/debug-macro.S
index a9ee8f0d48b7..27cafd12f033 100644
--- a/arch/arm/mach-h720x/include/mach/debug-macro.S
+++ b/arch/arm/mach-h720x/include/mach/debug-macro.S
@@ -11,8 +11,10 @@
  *
 */
 
-		.equ    io_virt, IO_BASE
-		.equ    io_phys, IO_START
+#include <mach/hardware.h>
+
+		.equ    io_virt, IO_VIRT
+		.equ    io_phys, IO_PHYS
 
 		.macro  addruart, rx, tmp
 		mrc     p15, 0, \rx, c1, c0
diff --git a/arch/arm/mach-kirkwood/tsx1x-common.c b/arch/arm/mach-kirkwood/tsx1x-common.c
index 7221c20b2afa..f781164e623f 100644
--- a/arch/arm/mach-kirkwood/tsx1x-common.c
+++ b/arch/arm/mach-kirkwood/tsx1x-common.c
@@ -77,7 +77,7 @@ struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
 	},
 };
 
-void qnap_tsx1x_register_flash(void)
+void __init qnap_tsx1x_register_flash(void)
 {
 	spi_register_board_info(qnap_tsx1x_spi_slave_info,
 				ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
diff --git a/arch/arm/mach-kirkwood/tsx1x-common.h b/arch/arm/mach-kirkwood/tsx1x-common.h
index 9a592962a6ea..7fa037361b55 100644
--- a/arch/arm/mach-kirkwood/tsx1x-common.h
+++ b/arch/arm/mach-kirkwood/tsx1x-common.h
@@ -1,7 +1,7 @@
 #ifndef __ARCH_KIRKWOOD_TSX1X_COMMON_H
 #define __ARCH_KIRKWOOD_TSX1X_COMMON_H
 
-extern void qnap_tsx1x_register_flash(void);
+extern void __init qnap_tsx1x_register_flash(void);
 extern void qnap_tsx1x_power_off(void);
 
 #endif
diff --git a/arch/arm/mach-ns9xxx/include/mach/debug-macro.S b/arch/arm/mach-ns9xxx/include/mach/debug-macro.S
index 0859336a8e6d..5c934bdb7158 100644
--- a/arch/arm/mach-ns9xxx/include/mach/debug-macro.S
+++ b/arch/arm/mach-ns9xxx/include/mach/debug-macro.S
@@ -8,6 +8,7 @@
  * the Free Software Foundation.
  */
 #include <mach/hardware.h>
+#include <asm/memory.h>
 
 #include <mach/regs-board-a9m9750dev.h>
 
diff --git a/arch/arm/mach-ns9xxx/include/mach/uncompress.h b/arch/arm/mach-ns9xxx/include/mach/uncompress.h
index 1b12d324b087..770a68c46e81 100644
--- a/arch/arm/mach-ns9xxx/include/mach/uncompress.h
+++ b/arch/arm/mach-ns9xxx/include/mach/uncompress.h
@@ -20,50 +20,49 @@ static void putc_dummy(char c, void __iomem *base)
 	/* nothing */
 }
 
+static int timeout;
+
 static void putc_ns9360(char c, void __iomem *base)
 {
-	static int t = 0x10000;
 	do {
-		if (t)
-			--t;
+		if (timeout)
+			--timeout;
 
 		if (__raw_readl(base + 8) & (1 << 3)) {
 			__raw_writeb(c, base + 16);
-			t = 0x10000;
+			timeout = 0x10000;
 			break;
 		}
-	} while (t);
+	} while (timeout);
 }
 
 static void putc_a9m9750dev(char c, void __iomem *base)
 {
-	static int t = 0x10000;
 	do {
-		if (t)
-			--t;
+		if (timeout)
+			--timeout;
 
 		if (__raw_readb(base + 5) & (1 << 5)) {
 			__raw_writeb(c, base);
-			t = 0x10000;
+			timeout = 0x10000;
 			break;
 		}
-	} while (t);
+	} while (timeout);
 
 }
 
 static void putc_ns921x(char c, void __iomem *base)
 {
-	static int t = 0x10000;
 	do {
-		if (t)
-			--t;
+		if (timeout)
+			--timeout;
 
 		if (!(__raw_readl(base) & (1 << 11))) {
 			__raw_writeb(c, base + 0x0028);
-			t = 0x10000;
+			timeout = 0x10000;
 			break;
 		}
-	} while (t);
+	} while (timeout);
 }
 
 #define MSCS __REG(0xA0900184)
@@ -89,6 +88,7 @@ static void putc_ns921x(char c, void __iomem *base)
 
 static void autodetect(void (**putc)(char, void __iomem *), void __iomem **base)
 {
+	timeout = 0x10000;
 	if (((__raw_readl(MSCS) >> 16) & 0xfe) == 0x00) {
 		/* ns9360 or ns9750 */
 		if (NS9360_UART_ENABLED(NS9360_UARTA)) {
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index abdf321c2d41..03483920ed6e 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -175,6 +175,10 @@ static void __init rx51_add_gpio_keys(void)
 #endif /* CONFIG_KEYBOARD_GPIO || CONFIG_KEYBOARD_GPIO_MODULE */
 
 static int board_keymap[] = {
+	/*
+	 * Note that KEY(x, 8, KEY_XXX) entries represent "entrire row
+	 * connected to the ground" matrix state.
+	 */
 	KEY(0, 0, KEY_Q),
 	KEY(0, 1, KEY_O),
 	KEY(0, 2, KEY_P),
@@ -182,6 +186,7 @@ static int board_keymap[] = {
 	KEY(0, 4, KEY_BACKSPACE),
 	KEY(0, 6, KEY_A),
 	KEY(0, 7, KEY_S),
+
 	KEY(1, 0, KEY_W),
 	KEY(1, 1, KEY_D),
 	KEY(1, 2, KEY_F),
@@ -190,6 +195,7 @@ static int board_keymap[] = {
 	KEY(1, 5, KEY_J),
 	KEY(1, 6, KEY_K),
 	KEY(1, 7, KEY_L),
+
 	KEY(2, 0, KEY_E),
 	KEY(2, 1, KEY_DOT),
 	KEY(2, 2, KEY_UP),
@@ -197,6 +203,8 @@ static int board_keymap[] = {
 	KEY(2, 5, KEY_Z),
 	KEY(2, 6, KEY_X),
 	KEY(2, 7, KEY_C),
+	KEY(2, 8, KEY_F9),
+
 	KEY(3, 0, KEY_R),
 	KEY(3, 1, KEY_V),
 	KEY(3, 2, KEY_B),
@@ -205,20 +213,23 @@ static int board_keymap[] = {
 	KEY(3, 5, KEY_SPACE),
 	KEY(3, 6, KEY_SPACE),
 	KEY(3, 7, KEY_LEFT),
+
 	KEY(4, 0, KEY_T),
 	KEY(4, 1, KEY_DOWN),
 	KEY(4, 2, KEY_RIGHT),
 	KEY(4, 4, KEY_LEFTCTRL),
 	KEY(4, 5, KEY_RIGHTALT),
 	KEY(4, 6, KEY_LEFTSHIFT),
+	KEY(4, 8, KEY_F10),
+
 	KEY(5, 0, KEY_Y),
+	KEY(5, 8, KEY_F11),
+
 	KEY(6, 0, KEY_U),
+
 	KEY(7, 0, KEY_I),
 	KEY(7, 1, KEY_F7),
 	KEY(7, 2, KEY_F8),
-	KEY(0xff, 2, KEY_F9),
-	KEY(0xff, 4, KEY_F10),
-	KEY(0xff, 5, KEY_F11),
 };
 
 static struct matrix_keymap_data board_map_data = {
diff --git a/arch/arm/mach-pxa/colibri-pxa300.c b/arch/arm/mach-pxa/colibri-pxa300.c
index 45c23fd6df31..40b6ac2de876 100644
--- a/arch/arm/mach-pxa/colibri-pxa300.c
+++ b/arch/arm/mach-pxa/colibri-pxa300.c
@@ -26,6 +26,7 @@
 #include <mach/colibri.h>
 #include <mach/ohci.h>
 #include <mach/pxafb.h>
+#include <mach/audio.h>
 
 #include "generic.h"
 #include "devices.h"
@@ -145,7 +146,7 @@ static void __init colibri_pxa300_init_lcd(void)
 static inline void colibri_pxa300_init_lcd(void) {}
 #endif /* CONFIG_FB_PXA || CONFIG_FB_PXA_MODULE */
 
-#if defined(SND_AC97_CODEC) || defined(SND_AC97_CODEC_MODULE)
+#if defined(CONFIG_SND_AC97_CODEC) || defined(CONFIG_SND_AC97_CODEC_MODULE)
 static mfp_cfg_t colibri_pxa310_ac97_pin_config[] __initdata = {
 	GPIO24_AC97_SYSCLK,
 	GPIO23_AC97_nACRESET,
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index 3d1dcb9ac08f..51ffa6afb675 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -446,7 +446,7 @@ static struct platform_device corgiled_device = {
 static struct pxamci_platform_data corgi_mci_platform_data = {
 	.detect_delay_ms	= 250,
 	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
-	.gpio_card_detect	= -1,
+	.gpio_card_detect	= CORGI_GPIO_nSD_DETECT,
 	.gpio_card_ro		= CORGI_GPIO_nSD_WP,
 	.gpio_power		= CORGI_GPIO_SD_PWR,
 };
diff --git a/arch/arm/mach-pxa/cpufreq-pxa2xx.c b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
index 9e4d9816726a..268a9bc6be8a 100644
--- a/arch/arm/mach-pxa/cpufreq-pxa2xx.c
+++ b/arch/arm/mach-pxa/cpufreq-pxa2xx.c
@@ -256,13 +256,9 @@ static void init_sdram_rows(void)
 
 static u32 mdrefr_dri(unsigned int freq)
 {
-	u32 dri = 0;
+	u32 interval = freq * SDRAM_TREF / sdram_rows;
 
-	if (cpu_is_pxa25x())
-		dri = ((freq * SDRAM_TREF) / (sdram_rows * 32));
-	if (cpu_is_pxa27x())
-		dri = ((freq * SDRAM_TREF) / (sdram_rows - 31)) / 32;
-	return dri;
+	return (interval - (cpu_is_pxa27x() ? 31 : 0)) / 32;
 }
 
 /* find a valid frequency point */
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 0af36177ff08..c059dac02b61 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -41,10 +41,10 @@ void pxa27x_clear_otgph(void)
 EXPORT_SYMBOL(pxa27x_clear_otgph);
 
 static unsigned long ac97_reset_config[] = {
-	GPIO95_AC97_nRESET,
-	GPIO95_GPIO,
-	GPIO113_AC97_nRESET,
 	GPIO113_GPIO,
+	GPIO113_AC97_nRESET,
+	GPIO95_GPIO,
+	GPIO95_AC97_nRESET,
 };
 
 void pxa27x_assert_ac97reset(int reset_gpio, int on)
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 595be19f8ad5..02e9fdeb8faf 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -237,7 +237,7 @@ static unsigned int realview_mmc_status(struct device *dev)
 	else
 		mask = 2;
 
-	return !(readl(REALVIEW_SYSMCI) & mask);
+	return readl(REALVIEW_SYSMCI) & mask;
 }
 
 struct mmci_platform_data realview_mmc0_plat_data = {
diff --git a/arch/arm/mach-shark/include/mach/debug-macro.S b/arch/arm/mach-shark/include/mach/debug-macro.S
index 50f071c5bf4d..5ea24d4d1ba6 100644
--- a/arch/arm/mach-shark/include/mach/debug-macro.S
+++ b/arch/arm/mach-shark/include/mach/debug-macro.S
@@ -20,6 +20,9 @@
 		strb	\rd, [\rx]
 		.endm
 
+		.macro waituart,rd,rx
+		.endm
+
 		.macro	busyuart,rd,rx
 		mov	\rd, #0
 1001:		add	\rd, \rd, #1
diff --git a/arch/arm/mach-ux500/include/mach/uncompress.h b/arch/arm/mach-ux500/include/mach/uncompress.h
index 8552eb188b50..0271ca0a83df 100644
--- a/arch/arm/mach-ux500/include/mach/uncompress.h
+++ b/arch/arm/mach-ux500/include/mach/uncompress.h
@@ -30,22 +30,22 @@
 static void putc(const char c)
 {
 	/* Do nothing if the UART is not enabled. */
-	if (!(readb(U8500_UART_CR) & 0x1))
+	if (!(__raw_readb(U8500_UART_CR) & 0x1))
 		return;
 
 	if (c == '\n')
 		putc('\r');
 
-	while (readb(U8500_UART_FR) & (1 << 5))
+	while (__raw_readb(U8500_UART_FR) & (1 << 5))
 		barrier();
-	writeb(c, U8500_UART_DR);
+	__raw_writeb(c, U8500_UART_DR);
 }
 
 static void flush(void)
 {
-	if (!(readb(U8500_UART_CR) & 0x1))
+	if (!(__raw_readb(U8500_UART_CR) & 0x1))
 		return;
-	while (readb(U8500_UART_FR) & (1 << 3))
+	while (__raw_readb(U8500_UART_FR) & (1 << 3))
 		barrier();
 }
 
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index d250711b8c7a..c84239761cb4 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -241,7 +241,7 @@ static struct platform_device v2m_flash_device = {
 
 static unsigned int v2m_mmci_status(struct device *dev)
 {
-	return !(readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0));
+	return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
 }
 
 static struct mmci_platform_data v2m_mmci_data = {
diff --git a/arch/arm/mach-w90x900/cpu.c b/arch/arm/mach-w90x900/cpu.c
index 642207e18198..83c56324a472 100644
--- a/arch/arm/mach-w90x900/cpu.c
+++ b/arch/arm/mach-w90x900/cpu.c
@@ -93,7 +93,7 @@ static struct clk_lookup nuc900_clkregs[] = {
 	DEF_CLKLOOK(&clk_kpi, "nuc900-kpi", NULL),
 	DEF_CLKLOOK(&clk_wdt, "nuc900-wdt", NULL),
 	DEF_CLKLOOK(&clk_gdma, "nuc900-gdma", NULL),
-	DEF_CLKLOOK(&clk_adc, "nuc900-adc", NULL),
+	DEF_CLKLOOK(&clk_adc, "nuc900-ts", NULL),
 	DEF_CLKLOOK(&clk_usi, "nuc900-spi", NULL),
 	DEF_CLKLOOK(&clk_ext, NULL, "ext"),
 	DEF_CLKLOOK(&clk_timer0, NULL, "timer0"),
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index df4955885b21..9982eb385c0f 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -32,14 +32,14 @@ static uint32_t l2x0_way_mask;	/* Bitmask of active ways */
 static inline void cache_wait(void __iomem *reg, unsigned long mask)
 {
 	/* wait for the operation to complete */
-	while (readl(reg) & mask)
+	while (readl_relaxed(reg) & mask)
 		;
 }
 
 static inline void cache_sync(void)
 {
 	void __iomem *base = l2x0_base;
-	writel(0, base + L2X0_CACHE_SYNC);
+	writel_relaxed(0, base + L2X0_CACHE_SYNC);
 	cache_wait(base + L2X0_CACHE_SYNC, 1);
 }
 
@@ -47,14 +47,14 @@ static inline void l2x0_clean_line(unsigned long addr)
 {
 	void __iomem *base = l2x0_base;
 	cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
-	writel(addr, base + L2X0_CLEAN_LINE_PA);
+	writel_relaxed(addr, base + L2X0_CLEAN_LINE_PA);
 }
 
 static inline void l2x0_inv_line(unsigned long addr)
 {
 	void __iomem *base = l2x0_base;
 	cache_wait(base + L2X0_INV_LINE_PA, 1);
-	writel(addr, base + L2X0_INV_LINE_PA);
+	writel_relaxed(addr, base + L2X0_INV_LINE_PA);
 }
 
 #ifdef CONFIG_PL310_ERRATA_588369
@@ -75,9 +75,9 @@ static inline void l2x0_flush_line(unsigned long addr)
 
 	/* Clean by PA followed by Invalidate by PA */
 	cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
-	writel(addr, base + L2X0_CLEAN_LINE_PA);
+	writel_relaxed(addr, base + L2X0_CLEAN_LINE_PA);
 	cache_wait(base + L2X0_INV_LINE_PA, 1);
-	writel(addr, base + L2X0_INV_LINE_PA);
+	writel_relaxed(addr, base + L2X0_INV_LINE_PA);
 }
 #else
 
@@ -90,7 +90,7 @@ static inline void l2x0_flush_line(unsigned long addr)
 {
 	void __iomem *base = l2x0_base;
 	cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
-	writel(addr, base + L2X0_CLEAN_INV_LINE_PA);
+	writel_relaxed(addr, base + L2X0_CLEAN_INV_LINE_PA);
 }
 #endif
 
@@ -109,7 +109,7 @@ static inline void l2x0_inv_all(void)
 
 	/* invalidate all ways */
 	spin_lock_irqsave(&l2x0_lock, flags);
-	writel(l2x0_way_mask, l2x0_base + L2X0_INV_WAY);
+	writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_INV_WAY);
 	cache_wait(l2x0_base + L2X0_INV_WAY, l2x0_way_mask);
 	cache_sync();
 	spin_unlock_irqrestore(&l2x0_lock, flags);
@@ -215,8 +215,8 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
 
 	l2x0_base = base;
 
-	cache_id = readl(l2x0_base + L2X0_CACHE_ID);
-	aux = readl(l2x0_base + L2X0_AUX_CTRL);
+	cache_id = readl_relaxed(l2x0_base + L2X0_CACHE_ID);
+	aux = readl_relaxed(l2x0_base + L2X0_AUX_CTRL);
 
 	aux &= aux_mask;
 	aux |= aux_val;
@@ -248,15 +248,15 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
 	 * If you are booting from non-secure mode
 	 * accessing the below registers will fault.
 	 */
-	if (!(readl(l2x0_base + L2X0_CTRL) & 1)) {
+	if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & 1)) {
 
 		/* l2x0 controller is disabled */
-		writel(aux, l2x0_base + L2X0_AUX_CTRL);
+		writel_relaxed(aux, l2x0_base + L2X0_AUX_CTRL);
 
 		l2x0_inv_all();
 
 		/* enable L2X0 */
-		writel(1, l2x0_base + L2X0_CTRL);
+		writel_relaxed(1, l2x0_base + L2X0_CTRL);
 	}
 
 	outer_cache.inv_range = l2x0_inv_range;
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
index 086816b205b8..6ab244062b4a 100644
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
@@ -163,19 +163,22 @@ static DEFINE_PER_CPU(int, kmap_high_l1_vipt_depth);
 
 void *kmap_high_l1_vipt(struct page *page, pte_t *saved_pte)
 {
-	unsigned int idx, cpu = smp_processor_id();
-	int *depth = &per_cpu(kmap_high_l1_vipt_depth, cpu);
+	unsigned int idx, cpu;
+	int *depth;
 	unsigned long vaddr, flags;
 	pte_t pte, *ptep;
 
+	if (!in_interrupt())
+		preempt_disable();
+
+	cpu = smp_processor_id();
+	depth = &per_cpu(kmap_high_l1_vipt_depth, cpu);
+
 	idx = KM_L1_CACHE + KM_TYPE_NR * cpu;
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
 	ptep = TOP_PTE(vaddr);
 	pte = mk_pte(page, kmap_prot);
 
-	if (!in_interrupt())
-		preempt_disable();
-
 	raw_local_irq_save(flags);
 	(*depth)++;
 	if (pte_val(*ptep) == pte_val(pte)) {
diff --git a/arch/arm/plat-spear/include/plat/debug-macro.S b/arch/arm/plat-spear/include/plat/debug-macro.S
index 1670734b7e51..37fa593884ee 100644
--- a/arch/arm/plat-spear/include/plat/debug-macro.S
+++ b/arch/arm/plat-spear/include/plat/debug-macro.S
@@ -17,8 +17,8 @@
 		.macro	addruart, rx
 		mrc	p15, 0, \rx, c1, c0
 		tst	\rx, #1					@ MMU enabled?
-		moveq	\rx, =SPEAR_DBG_UART_BASE		@ Physical base
-		movne	\rx, =VA_SPEAR_DBG_UART_BASE		@ Virtual base
+		moveq	\rx, #SPEAR_DBG_UART_BASE		@ Physical base
+		movne	\rx, #VA_SPEAR_DBG_UART_BASE		@ Virtual base
 		.endm
 
 		.macro	senduart, rd, rx
diff --git a/arch/avr32/include/asm/ioctls.h b/arch/avr32/include/asm/ioctls.h
index 0cf2c0a4502b..e6ac0b661076 100644
--- a/arch/avr32/include/asm/ioctls.h
+++ b/arch/avr32/include/asm/ioctls.h
@@ -54,6 +54,9 @@
 #define TIOCGPTN	_IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
 #define TIOCSPTLCK	_IOW('T',0x31, int)  /* Lock/unlock Pty */
 
+#define TIOCGRS485      0x542E
+#define TIOCSRS485      0x542F
+
 #define FIONCLEX	0x5450
 #define FIOCLEX		0x5451
 #define FIOASYNC	0x5452
diff --git a/arch/avr32/mach-at32ap/include/mach/board.h b/arch/avr32/mach-at32ap/include/mach/board.h
index c7f25bb1d068..61740201b311 100644
--- a/arch/avr32/mach-at32ap/include/mach/board.h
+++ b/arch/avr32/mach-at32ap/include/mach/board.h
@@ -5,6 +5,7 @@
 #define __ASM_ARCH_BOARD_H
 
 #include <linux/types.h>
+#include <linux/serial.h>
 
 #define GPIO_PIN_NONE	(-1)
 
@@ -35,6 +36,7 @@ struct atmel_uart_data {
 	short		use_dma_tx;	/* use transmit DMA? */
 	short		use_dma_rx;	/* use receive DMA? */
 	void __iomem	*regs;		/* virtual base address, if any */
+	struct serial_rs485	rs485;		/* rs485 settings */
 };
 void at32_map_usart(unsigned int hw_id, unsigned int line, int flags);
 struct platform_device *at32_add_device_usart(unsigned int id);
diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
index 2580e77624d2..f9e5622ebc95 100644
--- a/arch/mips/alchemy/common/platform.c
+++ b/arch/mips/alchemy/common/platform.c
@@ -435,20 +435,21 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 static int __init au1xxx_platform_init(void)
 {
 	unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
-	int i;
+	int err, i;
 
 	/* Fill up uartclk. */
 	for (i = 0; au1x00_uart_data[i].flags; i++)
 		au1x00_uart_data[i].uartclk = uartclk;
 
+	err = platform_add_devices(au1xxx_platform_devices,
+				   ARRAY_SIZE(au1xxx_platform_devices));
 #ifndef CONFIG_SOC_AU1100
 	/* Register second MAC if enabled in pinfunc */
-	if (!(au_readl(SYS_PINFUNC) & (u32)SYS_PF_NI2))
+	if (!err && !(au_readl(SYS_PINFUNC) & (u32)SYS_PF_NI2))
 		platform_device_register(&au1xxx_eth1_device);
 #endif
 
-	return platform_add_devices(au1xxx_platform_devices,
-				    ARRAY_SIZE(au1xxx_platform_devices));
+	return err;
 }
 
 arch_initcall(au1xxx_platform_init);
diff --git a/arch/mips/alchemy/mtx-1/board_setup.c b/arch/mips/alchemy/mtx-1/board_setup.c
index a9f0336e1f1f..52d883d37dd7 100644
--- a/arch/mips/alchemy/mtx-1/board_setup.c
+++ b/arch/mips/alchemy/mtx-1/board_setup.c
@@ -67,8 +67,6 @@ static void mtx1_power_off(void)
 
 void __init board_setup(void)
 {
-	alchemy_gpio2_enable();
-
 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 	/* Enable USB power switch */
 	alchemy_gpio_direction_output(204, 0);
@@ -117,11 +115,11 @@ mtx1_pci_idsel(unsigned int devsel, int assert)
 
 	if (assert && devsel != 0)
 		/* Suppress signal to Cardbus */
-		gpio_set_value(1, 0);	/* set EXT_IO3 OFF */
+		alchemy_gpio_set_value(1, 0);	/* set EXT_IO3 OFF */
 	else
-		gpio_set_value(1, 1);	/* set EXT_IO3 ON */
+		alchemy_gpio_set_value(1, 1);	/* set EXT_IO3 ON */
 
-	au_sync_udelay(1);
+	udelay(1);
 	return 1;
 }
 
diff --git a/arch/mips/bcm63xx/dev-enet.c b/arch/mips/bcm63xx/dev-enet.c
index 9f544badd0b4..39c23366c5c7 100644
--- a/arch/mips/bcm63xx/dev-enet.c
+++ b/arch/mips/bcm63xx/dev-enet.c
@@ -104,6 +104,9 @@ int __init bcm63xx_enet_register(int unit,
 	if (unit > 1)
 		return -ENODEV;
 
+	if (unit == 1 && BCMCPU_IS_6338())
+		return -ENODEV;
+
 	if (!shared_device_registered) {
 		shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
 		shared_res[0].end = shared_res[0].start;
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 59dc0c7ef733..c63c56bfd184 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -434,7 +434,7 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%0, %1		# atomic64_add		\n"
-		"	addu	%0, %2					\n"
+		"	daddu	%0, %2					\n"
 		"	scd	%0, %1					\n"
 		"	beqzl	%0, 1b					\n"
 		"	.set	mips0					\n"
@@ -446,7 +446,7 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%0, %1		# atomic64_add		\n"
-		"	addu	%0, %2					\n"
+		"	daddu	%0, %2					\n"
 		"	scd	%0, %1					\n"
 		"	beqz	%0, 2f					\n"
 		"	.subsection 2					\n"
@@ -479,7 +479,7 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%0, %1		# atomic64_sub		\n"
-		"	subu	%0, %2					\n"
+		"	dsubu	%0, %2					\n"
 		"	scd	%0, %1					\n"
 		"	beqzl	%0, 1b					\n"
 		"	.set	mips0					\n"
@@ -491,7 +491,7 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%0, %1		# atomic64_sub		\n"
-		"	subu	%0, %2					\n"
+		"	dsubu	%0, %2					\n"
 		"	scd	%0, %1					\n"
 		"	beqz	%0, 2f					\n"
 		"	.subsection 2					\n"
@@ -524,10 +524,10 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%1, %2		# atomic64_add_return	\n"
-		"	addu	%0, %1, %3				\n"
+		"	daddu	%0, %1, %3				\n"
 		"	scd	%0, %2					\n"
 		"	beqzl	%0, 1b					\n"
-		"	addu	%0, %1, %3				\n"
+		"	daddu	%0, %1, %3				\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
 		: "Ir" (i), "m" (v->counter)
@@ -538,10 +538,10 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%1, %2		# atomic64_add_return	\n"
-		"	addu	%0, %1, %3				\n"
+		"	daddu	%0, %1, %3				\n"
 		"	scd	%0, %2					\n"
 		"	beqz	%0, 2f					\n"
-		"	addu	%0, %1, %3				\n"
+		"	daddu	%0, %1, %3				\n"
 		"	.subsection 2					\n"
 		"2:	b	1b					\n"
 		"	.previous					\n"
@@ -576,10 +576,10 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%1, %2		# atomic64_sub_return	\n"
-		"	subu	%0, %1, %3				\n"
+		"	dsubu	%0, %1, %3				\n"
 		"	scd	%0, %2					\n"
 		"	beqzl	%0, 1b					\n"
-		"	subu	%0, %1, %3				\n"
+		"	dsubu	%0, %1, %3				\n"
 		"	.set	mips0					\n"
 		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
 		: "Ir" (i), "m" (v->counter)
@@ -590,10 +590,10 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
 		"1:	lld	%1, %2		# atomic64_sub_return	\n"
-		"	subu	%0, %1, %3				\n"
+		"	dsubu	%0, %1, %3				\n"
 		"	scd	%0, %2					\n"
 		"	beqz	%0, 2f					\n"
-		"	subu	%0, %1, %3				\n"
+		"	dsubu	%0, %1, %3				\n"
 		"	.subsection 2					\n"
 		"2:	b	1b					\n"
 		"	.previous					\n"
diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h
index 1b5a6648eb86..baa318a59c97 100644
--- a/arch/mips/include/asm/unistd.h
+++ b/arch/mips/include/asm/unistd.h
@@ -984,16 +984,17 @@
 #define __NR_perf_event_open		(__NR_Linux + 296)
 #define __NR_accept4			(__NR_Linux + 297)
 #define __NR_recvmmsg			(__NR_Linux + 298)
+#define __NR_getdents64			(__NR_Linux + 299)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls		298
+#define __NR_Linux_syscalls		299
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000
-#define __NR_N32_Linux_syscalls		298
+#define __NR_N32_Linux_syscalls		299
 
 #ifdef __KERNEL__
 
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index a5297e2a353a..a4faceea9d88 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -419,4 +419,5 @@ EXPORT(sysn32_call_table)
 	PTR	sys_perf_event_open
 	PTR	sys_accept4
 	PTR     compat_sys_recvmmsg
+	PTR     sys_getdents
 	.size	sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index b773c1112b14..e5cdfd603f8f 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -61,11 +61,9 @@ static int __init init_vdso(void)
 
 	vunmap(vdso);
 
-	pr_notice("init_vdso successfull\n");
-
 	return 0;
 }
-device_initcall(init_vdso);
+subsys_initcall(init_vdso);
 
 static unsigned long vdso_addr(unsigned long start)
 {
diff --git a/arch/mips/mti-malta/malta-pci.c b/arch/mips/mti-malta/malta-pci.c
index 2fbfa1a8c3a9..bf80921f2f56 100644
--- a/arch/mips/mti-malta/malta-pci.c
+++ b/arch/mips/mti-malta/malta-pci.c
@@ -247,6 +247,8 @@ void __init mips_pcibios_init(void)
 	iomem_resource.end &= 0xfffffffffULL;			/* 64 GB */
 	ioport_resource.end = controller->io_resource->end;
 
+	controller->io_map_base = mips_io_port_base;
+
 	register_pci_controller(controller);
 }
 
diff --git a/arch/mips/nxp/pnx8550/common/pci.c b/arch/mips/nxp/pnx8550/common/pci.c
index eee4f3dfc410..98e86ddb86cc 100644
--- a/arch/mips/nxp/pnx8550/common/pci.c
+++ b/arch/mips/nxp/pnx8550/common/pci.c
@@ -44,6 +44,7 @@ extern struct pci_ops pnx8550_pci_ops;
 
 static struct pci_controller pnx8550_controller = {
 	.pci_ops	= &pnx8550_pci_ops,
+	.io_map_base	= PNX8550_PORT_BASE,
 	.io_resource	= &pci_io_resource,
 	.mem_resource	= &pci_mem_resource,
 };
diff --git a/arch/mips/nxp/pnx8550/common/setup.c b/arch/mips/nxp/pnx8550/common/setup.c
index 2aed50fef10f..64246c9c875c 100644
--- a/arch/mips/nxp/pnx8550/common/setup.c
+++ b/arch/mips/nxp/pnx8550/common/setup.c
@@ -113,7 +113,7 @@ void __init plat_mem_setup(void)
 	PNX8550_GLB2_ENAB_INTA_O = 0;
 
 	/* IO/MEM resources. */
-	set_io_port_base(KSEG1);
+	set_io_port_base(PNX8550_PORT_BASE);
 	ioport_resource.start = 0;
 	ioport_resource.end = ~0;
 	iomem_resource.start = 0;
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
index 04b31478a6d7..b7c03d80c88c 100644
--- a/arch/mips/pci/ops-pmcmsp.c
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -944,6 +944,7 @@ static struct pci_controller msp_pci_controller = {
 	.pci_ops	= &msp_pci_ops,
 	.mem_resource	= &pci_mem_resource,
 	.mem_offset	= 0,
+	.io_map_base	= MSP_PCI_IOSPACE_BASE,
 	.io_resource	= &pci_io_resource,
 	.io_offset	= 0
 };
diff --git a/arch/mips/pci/pci-yosemite.c b/arch/mips/pci/pci-yosemite.c
index 0357946f30e6..cf5e1a25cb7d 100644
--- a/arch/mips/pci/pci-yosemite.c
+++ b/arch/mips/pci/pci-yosemite.c
@@ -54,6 +54,7 @@ static int __init pmc_yosemite_setup(void)
 		panic(ioremap_failed);
 
 	set_io_port_base(io_v_base);
+	py_controller.io_map_base = io_v_base;
 	TITAN_WRITE(RM9000x2_OCD_LKM7, TITAN_READ(RM9000x2_OCD_LKM7) | 1);
 
 	ioport_resource.end = TITAN_IO_SIZE - 1;
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
index 8ee77887306a..9ec523e4dd06 100644
--- a/arch/mips/powertv/asic/asic_devices.c
+++ b/arch/mips/powertv/asic/asic_devices.c
@@ -472,6 +472,9 @@ void __init configure_platform(void)
 		 * it*/
 		platform_features = FFS_CAPABLE | DISPLAY_CAPABLE;
 
+		/* Cronus and Cronus Lite have the same register map */
+		set_register_map(CRONUS_IO_BASE, &cronus_register_map);
+
 		/* ASIC version will determine if this is a real CronusLite or
 		 * Castrati(Cronus) */
 		chipversion  = asic_read(chipver3) << 24;
@@ -484,8 +487,6 @@ void __init configure_platform(void)
 		else
 			asic = ASIC_CRONUSLITE;
 
-		/* Cronus and Cronus Lite have the same register map */
-		set_register_map(CRONUS_IO_BASE, &cronus_register_map);
 		gp_resources = non_dvr_cronuslite_resources;
 		pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, "
 			"chipversion=0x%08X\n",
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index 2a9cd74a841e..076327f2eff7 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -8,9 +8,9 @@
  * On FSL-BookE we setup a 1:1 mapping which covers the first 2GiB of memory
  * and therefore we can only deal with memory within this range
  */
-#define KEXEC_SOURCE_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
-#define KEXEC_DESTINATION_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
-#define KEXEC_CONTROL_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL)
+#define KEXEC_SOURCE_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL - 1)
+#define KEXEC_DESTINATION_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL - 1)
+#define KEXEC_CONTROL_MEMORY_LIMIT	(2 * 1024 * 1024 * 1024UL - 1)
 
 #else
 
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h
index 2102b214a87c..0e398cfee2c8 100644
--- a/arch/powerpc/include/asm/mmu-hash64.h
+++ b/arch/powerpc/include/asm/mmu-hash64.h
@@ -250,7 +250,9 @@ extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
 		     pte_t *ptep, unsigned long trap, int local, int ssize,
 		     unsigned int shift, unsigned int mmu_psize);
-
+extern void hash_failure_debug(unsigned long ea, unsigned long access,
+			       unsigned long vsid, unsigned long trap,
+			       int ssize, int psize, unsigned long pte);
 extern int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
 			     unsigned long pstart, unsigned long prot,
 			     int psize, int ssize);
diff --git a/arch/powerpc/kernel/perf_event_fsl_emb.c b/arch/powerpc/kernel/perf_event_fsl_emb.c
index 369872f6cf78..babcceecd2ea 100644
--- a/arch/powerpc/kernel/perf_event_fsl_emb.c
+++ b/arch/powerpc/kernel/perf_event_fsl_emb.c
@@ -566,9 +566,9 @@ static void record_and_restart(struct perf_event *event, unsigned long val,
 	 * Finally record data if requested.
 	 */
 	if (record) {
-		struct perf_sample_data data = {
-			.period	= event->hw.last_period,
-		};
+		struct perf_sample_data data;
+
+		perf_sample_data_init(&data, 0);
 
 		if (perf_event_overflow(event, nmi, &data, regs)) {
 			/*
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 9d3953983fb7..fed9bf6187d1 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -414,7 +414,7 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node)
 	u64 base, size, memblock_size;
 	unsigned int is_kexec_kdump = 0, rngs;
 
-	ls = of_get_flat_dt_prop(node, "ibm,memblock-size", &l);
+	ls = of_get_flat_dt_prop(node, "ibm,lmb-size", &l);
 	if (ls == NULL || l < dt_root_size_cells * sizeof(__be32))
 		return 0;
 	memblock_size = dt_mem_next_cell(dt_root_size_cells, &ls);
diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index a719f53921a5..3079f6b44cf5 100644
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -68,9 +68,6 @@ _GLOBAL(__hash_page_4K)
 	std	r8,STK_PARM(r8)(r1)
 	std	r9,STK_PARM(r9)(r1)
 	
-	/* Add _PAGE_PRESENT to access */
-	ori	r4,r4,_PAGE_PRESENT
-
 	/* Save non-volatile registers.
 	 * r31 will hold "old PTE"
 	 * r30 is "new PTE"
@@ -347,9 +344,6 @@ _GLOBAL(__hash_page_4K)
 	std	r8,STK_PARM(r8)(r1)
 	std	r9,STK_PARM(r9)(r1)
 
-	/* Add _PAGE_PRESENT to access */
-	ori	r4,r4,_PAGE_PRESENT
-
 	/* Save non-volatile registers.
 	 * r31 will hold "old PTE"
 	 * r30 is "new PTE"
@@ -687,9 +681,6 @@ _GLOBAL(__hash_page_64K)
 	std	r8,STK_PARM(r8)(r1)
 	std	r9,STK_PARM(r9)(r1)
 
-	/* Add _PAGE_PRESENT to access */
-	ori	r4,r4,_PAGE_PRESENT
-
 	/* Save non-volatile registers.
 	 * r31 will hold "old PTE"
 	 * r30 is "new PTE"
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 98f262de5585..09dffe6efa46 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -871,6 +871,18 @@ static inline int subpage_protection(struct mm_struct *mm, unsigned long ea)
 }
 #endif
 
+void hash_failure_debug(unsigned long ea, unsigned long access,
+			unsigned long vsid, unsigned long trap,
+			int ssize, int psize, unsigned long pte)
+{
+	if (!printk_ratelimit())
+		return;
+	pr_info("mm: Hashing failure ! EA=0x%lx access=0x%lx current=%s\n",
+		ea, access, current->comm);
+	pr_info("    trap=0x%lx vsid=0x%lx ssize=%d psize=%d pte=0x%lx\n",
+		trap, vsid, ssize, psize, pte);
+}
+
 /* Result code is:
  *  0 - handled
  *  1 - normal page fault
@@ -955,6 +967,17 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 		return 1;
 	}
 
+	/* Add _PAGE_PRESENT to the required access perm */
+	access |= _PAGE_PRESENT;
+
+	/* Pre-check access permissions (will be re-checked atomically
+	 * in __hash_page_XX but this pre-check is a fast path
+	 */
+	if (access & ~pte_val(*ptep)) {
+		DBG_LOW(" no access !\n");
+		return 1;
+	}
+
 #ifdef CONFIG_HUGETLB_PAGE
 	if (hugeshift)
 		return __hash_page_huge(ea, access, vsid, ptep, trap, local,
@@ -967,14 +990,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 	DBG_LOW(" i-pte: %016lx %016lx\n", pte_val(*ptep),
 		pte_val(*(ptep + PTRS_PER_PTE)));
 #endif
-	/* Pre-check access permissions (will be re-checked atomically
-	 * in __hash_page_XX but this pre-check is a fast path
-	 */
-	if (access & ~pte_val(*ptep)) {
-		DBG_LOW(" no access !\n");
-		return 1;
-	}
-
 	/* Do actual hashing */
 #ifdef CONFIG_PPC_64K_PAGES
 	/* If _PAGE_4K_PFN is set, make sure this is a 4k segment */
@@ -1033,6 +1048,12 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 					    local, ssize, spp);
 	}
 
+	/* Dump some info in case of hash insertion failure, they should
+	 * never happen so it is really useful to know if/when they do
+	 */
+	if (rc == -1)
+		hash_failure_debug(ea, access, vsid, trap, ssize, psize,
+				   pte_val(*ptep));
 #ifndef CONFIG_PPC_64K_PAGES
 	DBG_LOW(" o-pte: %016lx\n", pte_val(*ptep));
 #else
@@ -1051,8 +1072,7 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 	void *pgdir;
 	pte_t *ptep;
 	unsigned long flags;
-	int local = 0;
-	int ssize;
+	int rc, ssize, local = 0;
 
 	BUG_ON(REGION_ID(ea) != USER_REGION_ID);
 
@@ -1098,11 +1118,18 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 	/* Hash it in */
 #ifdef CONFIG_PPC_HAS_HASH_64K
 	if (mm->context.user_psize == MMU_PAGE_64K)
-		__hash_page_64K(ea, access, vsid, ptep, trap, local, ssize);
+		rc = __hash_page_64K(ea, access, vsid, ptep, trap, local, ssize);
 	else
 #endif /* CONFIG_PPC_HAS_HASH_64K */
-		__hash_page_4K(ea, access, vsid, ptep, trap, local, ssize,
-			       subpage_protection(pgdir, ea));
+		rc = __hash_page_4K(ea, access, vsid, ptep, trap, local, ssize,
+				    subpage_protection(pgdir, ea));
+
+	/* Dump some info in case of hash insertion failure, they should
+	 * never happen so it is really useful to know if/when they do
+	 */
+	if (rc == -1)
+		hash_failure_debug(ea, access, vsid, trap, ssize,
+				   mm->context.user_psize, pte_val(*ptep));
 
 	local_irq_restore(flags);
 }
diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c b/arch/powerpc/mm/hugetlbpage-hash64.c
index 199539882f92..cc5c273086cf 100644
--- a/arch/powerpc/mm/hugetlbpage-hash64.c
+++ b/arch/powerpc/mm/hugetlbpage-hash64.c
@@ -21,21 +21,13 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
 	unsigned long old_pte, new_pte;
 	unsigned long va, rflags, pa, sz;
 	long slot;
-	int err = 1;
 
 	BUG_ON(shift != mmu_psize_defs[mmu_psize].shift);
 
 	/* Search the Linux page table for a match with va */
 	va = hpt_va(ea, vsid, ssize);
 
-	/*
-	 * Check the user's access rights to the page.  If access should be
-	 * prevented then send the problem up to do_page_fault.
-	 */
-	if (unlikely(access & ~pte_val(*ptep)))
-		goto out;
-	/*
-	 * At this point, we have a pte (old_pte) which can be used to build
+	/* At this point, we have a pte (old_pte) which can be used to build
 	 * or update an HPTE. There are 2 cases:
 	 *
 	 * 1. There is a valid (present) pte with no associated HPTE (this is
@@ -49,9 +41,17 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid,
 
 	do {
 		old_pte = pte_val(*ptep);
-		if (old_pte & _PAGE_BUSY)
-			goto out;
+		/* If PTE busy, retry the access */
+		if (unlikely(old_pte & _PAGE_BUSY))
+			return 0;
+		/* If PTE permissions don't match, take page fault */
+		if (unlikely(access & ~old_pte))
+			return 1;
+		/* Try to lock the PTE, add ACCESSED and DIRTY if it was
+		 * a write access */
 		new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED;
+		if (access & _PAGE_RW)
+			new_pte |= _PAGE_DIRTY;
 	} while(old_pte != __cmpxchg_u64((unsigned long *)ptep,
 					 old_pte, new_pte));
 
@@ -121,8 +121,16 @@ repeat:
                         }
 		}
 
-		if (unlikely(slot == -2))
-			panic("hash_huge_page: pte_insert failed\n");
+		/*
+		 * Hypervisor failure. Restore old pte and return -1
+		 * similar to __hash_page_*
+		 */
+		if (unlikely(slot == -2)) {
+			*ptep = __pte(old_pte);
+			hash_failure_debug(ea, access, vsid, trap, ssize,
+					   mmu_psize, old_pte);
+			return -1;
+		}
 
 		new_pte |= (slot << 12) & (_PAGE_F_SECOND | _PAGE_F_GIX);
 	}
@@ -131,9 +139,5 @@ repeat:
 	 * No need to use ldarx/stdcx here
 	 */
 	*ptep = __pte(new_pte & ~_PAGE_BUSY);
-
-	err = 0;
-
- out:
-	return err;
+	return 0;
 }
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index f47364585ecd..aa731af720c0 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -398,15 +398,15 @@ static int of_get_drconf_memory(struct device_node *memory, const u32 **dm)
 }
 
 /*
- * Retreive and validate the ibm,memblock-size property for drconf memory
+ * Retreive and validate the ibm,lmb-size property for drconf memory
  * from the device tree.
  */
-static u64 of_get_memblock_size(struct device_node *memory)
+static u64 of_get_lmb_size(struct device_node *memory)
 {
 	const u32 *prop;
 	u32 len;
 
-	prop = of_get_property(memory, "ibm,memblock-size", &len);
+	prop = of_get_property(memory, "ibm,lmb-size", &len);
 	if (!prop || len < sizeof(unsigned int))
 		return 0;
 
@@ -562,7 +562,7 @@ static unsigned long __init numa_enforce_memory_limit(unsigned long start,
 static inline int __init read_usm_ranges(const u32 **usm)
 {
 	/*
-	 * For each memblock in ibm,dynamic-memory a corresponding
+	 * For each lmb in ibm,dynamic-memory a corresponding
 	 * entry in linux,drconf-usable-memory property contains
 	 * a counter followed by that many (base, size) duple.
 	 * read the counter from linux,drconf-usable-memory
@@ -578,7 +578,7 @@ static void __init parse_drconf_memory(struct device_node *memory)
 {
 	const u32 *dm, *usm;
 	unsigned int n, rc, ranges, is_kexec_kdump = 0;
-	unsigned long memblock_size, base, size, sz;
+	unsigned long lmb_size, base, size, sz;
 	int nid;
 	struct assoc_arrays aa;
 
@@ -586,8 +586,8 @@ static void __init parse_drconf_memory(struct device_node *memory)
 	if (!n)
 		return;
 
-	memblock_size = of_get_memblock_size(memory);
-	if (!memblock_size)
+	lmb_size = of_get_lmb_size(memory);
+	if (!lmb_size)
 		return;
 
 	rc = of_get_assoc_arrays(memory, &aa);
@@ -611,7 +611,7 @@ static void __init parse_drconf_memory(struct device_node *memory)
 			continue;
 
 		base = drmem.base_addr;
-		size = memblock_size;
+		size = lmb_size;
 		ranges = 1;
 
 		if (is_kexec_kdump) {
@@ -1072,7 +1072,7 @@ static int hot_add_drconf_scn_to_nid(struct device_node *memory,
 {
 	const u32 *dm;
 	unsigned int drconf_cell_cnt, rc;
-	unsigned long memblock_size;
+	unsigned long lmb_size;
 	struct assoc_arrays aa;
 	int nid = -1;
 
@@ -1080,8 +1080,8 @@ static int hot_add_drconf_scn_to_nid(struct device_node *memory,
 	if (!drconf_cell_cnt)
 		return -1;
 
-	memblock_size = of_get_memblock_size(memory);
-	if (!memblock_size)
+	lmb_size = of_get_lmb_size(memory);
+	if (!lmb_size)
 		return -1;
 
 	rc = of_get_assoc_arrays(memory, &aa);
@@ -1100,7 +1100,7 @@ static int hot_add_drconf_scn_to_nid(struct device_node *memory,
 			continue;
 
 		if ((scn_addr < drmem.base_addr)
-		    || (scn_addr >= (drmem.base_addr + memblock_size)))
+		    || (scn_addr >= (drmem.base_addr + lmb_size)))
 			continue;
 
 		nid = of_drconf_to_nid_single(&drmem, &aa);
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index deab5f946090..bc8803664140 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -69,7 +69,7 @@ static int pseries_remove_memory(struct device_node *np)
 	const char *type;
 	const unsigned int *regs;
 	unsigned long base;
-	unsigned int memblock_size;
+	unsigned int lmb_size;
 	int ret = -EINVAL;
 
 	/*
@@ -87,9 +87,9 @@ static int pseries_remove_memory(struct device_node *np)
 		return ret;
 
 	base = *(unsigned long *)regs;
-	memblock_size = regs[3];
+	lmb_size = regs[3];
 
-	ret = pseries_remove_memblock(base, memblock_size);
+	ret = pseries_remove_memblock(base, lmb_size);
 	return ret;
 }
 
@@ -98,7 +98,7 @@ static int pseries_add_memory(struct device_node *np)
 	const char *type;
 	const unsigned int *regs;
 	unsigned long base;
-	unsigned int memblock_size;
+	unsigned int lmb_size;
 	int ret = -EINVAL;
 
 	/*
@@ -116,36 +116,36 @@ static int pseries_add_memory(struct device_node *np)
 		return ret;
 
 	base = *(unsigned long *)regs;
-	memblock_size = regs[3];
+	lmb_size = regs[3];
 
 	/*
 	 * Update memory region to represent the memory add
 	 */
-	ret = memblock_add(base, memblock_size);
+	ret = memblock_add(base, lmb_size);
 	return (ret < 0) ? -EINVAL : 0;
 }
 
 static int pseries_drconf_memory(unsigned long *base, unsigned int action)
 {
 	struct device_node *np;
-	const unsigned long *memblock_size;
+	const unsigned long *lmb_size;
 	int rc;
 
 	np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
 	if (!np)
 		return -EINVAL;
 
-	memblock_size = of_get_property(np, "ibm,memblock-size", NULL);
-	if (!memblock_size) {
+	lmb_size = of_get_property(np, "ibm,lmb-size", NULL);
+	if (!lmb_size) {
 		of_node_put(np);
 		return -EINVAL;
 	}
 
 	if (action == PSERIES_DRCONF_MEM_ADD) {
-		rc = memblock_add(*base, *memblock_size);
+		rc = memblock_add(*base, *lmb_size);
 		rc = (rc < 0) ? -EINVAL : 0;
 	} else if (action == PSERIES_DRCONF_MEM_REMOVE) {
-		rc = pseries_remove_memblock(*base, *memblock_size);
+		rc = pseries_remove_memblock(*base, *lmb_size);
 	} else {
 		rc = -EINVAL;
 	}
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index d5e3e6007447..bea9ee37ac9d 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -535,8 +535,16 @@ pgm_no_vtime2:
 	l	%r3,__LC_PGM_ILC	# load program interruption code
 	la	%r8,0x7f
 	nr	%r8,%r3 		# clear per-event-bit and ilc
-	be	BASED(pgm_exit)		# only per or per+check ?
-	b	BASED(pgm_do_call)
+	be	BASED(pgm_exit2)	# only per or per+check ?
+	l	%r7,BASED(.Ljump_table)
+	sll	%r8,2
+	l	%r7,0(%r8,%r7)		# load address of handler routine
+	la	%r2,SP_PTREGS(%r15)	# address of register-save area
+	basr	%r14,%r7		# branch to interrupt-handler
+pgm_exit2:
+	TRACE_IRQS_ON
+	stosm	__SF_EMPTY(%r15),0x03	# reenable interrupts
+	b	BASED(sysc_return)
 
 #
 # it was a single stepped SVC that is causing all the trouble
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index e7192e1cb678..8bccec15ea90 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -544,8 +544,16 @@ pgm_no_vtime2:
 	lgf	%r3,__LC_PGM_ILC	# load program interruption code
 	lghi	%r8,0x7f
 	ngr	%r8,%r3			# clear per-event-bit and ilc
-	je	pgm_exit
-	j	pgm_do_call
+	je	pgm_exit2
+	sll	%r8,3
+	larl	%r1,pgm_check_table
+	lg	%r1,0(%r8,%r1)		# load address of handler routine
+	la	%r2,SP_PTREGS(%r15)	# address of register-save area
+	basr	%r14,%r1		# branch to interrupt-handler
+pgm_exit2:
+	TRACE_IRQS_ON
+	stosm	__SF_EMPTY(%r15),0x03	# reenable interrupts
+	j	sysc_return
 
 #
 # it was a single stepped SVC that is causing all the trouble
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index a2163c95eb98..15a7536452d5 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -524,8 +524,11 @@ void etr_switch_to_local(void)
 	if (!etr_eacr.sl)
 		return;
 	disable_sync_clock(NULL);
-	set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events);
-	queue_work(time_sync_wq, &etr_work);
+	if (!test_and_set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events)) {
+		etr_eacr.es = etr_eacr.sl = 0;
+		etr_setr(&etr_eacr);
+		queue_work(time_sync_wq, &etr_work);
+	}
 }
 
 /*
@@ -539,8 +542,11 @@ void etr_sync_check(void)
 	if (!etr_eacr.es)
 		return;
 	disable_sync_clock(NULL);
-	set_bit(ETR_EVENT_SYNC_CHECK, &etr_events);
-	queue_work(time_sync_wq, &etr_work);
+	if (!test_and_set_bit(ETR_EVENT_SYNC_CHECK, &etr_events)) {
+		etr_eacr.es = 0;
+		etr_setr(&etr_eacr);
+		queue_work(time_sync_wq, &etr_work);
+	}
 }
 
 /*
@@ -902,7 +908,7 @@ static struct etr_eacr etr_handle_update(struct etr_aib *aib,
 	 * Do not try to get the alternate port aib if the clock
 	 * is not in sync yet.
 	 */
-	if (!check_sync_clock())
+	if (!eacr.es || !check_sync_clock())
 		return eacr;
 
 	/*
@@ -1064,7 +1070,7 @@ static void etr_work_fn(struct work_struct *work)
 	 * If the clock is in sync just update the eacr and return.
 	 * If there is no valid sync port wait for a port update.
 	 */
-	if (check_sync_clock() || sync_port < 0) {
+	if ((eacr.es && check_sync_clock()) || sync_port < 0) {
 		etr_update_eacr(eacr);
 		etr_set_tolec_timeout(now);
 		goto out_unlock;
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index 2e837f5080fe..fb7a5f052e2b 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -145,6 +145,15 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
 		percpu_entry->states[cx->index].eax = cx->address;
 		percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK;
 	}
+
+	/*
+	 * For _CST FFH on Intel, if GAS.access_size bit 1 is cleared,
+	 * then we should skip checking BM_STS for this C-state.
+	 * ref: "Intel Processor Vendor-Specific ACPI Interface Specification"
+	 */
+	if ((c->x86_vendor == X86_VENDOR_INTEL) && !(reg->access_size & 0x2))
+		cx->bm_sts_skip = 1;
+
 	return retval;
 }
 EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 82e508677b91..fcc3c61fdecc 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -157,9 +157,14 @@ static int __init acpi_sleep_setup(char *str)
 #ifdef CONFIG_HIBERNATION
 		if (strncmp(str, "s4_nohwsig", 10) == 0)
 			acpi_no_s4_hw_signature();
-		if (strncmp(str, "s4_nonvs", 8) == 0)
-			acpi_s4_no_nvs();
+		if (strncmp(str, "s4_nonvs", 8) == 0) {
+			pr_warning("ACPI: acpi_sleep=s4_nonvs is deprecated, "
+					"please use acpi_sleep=nonvs instead");
+			acpi_nvs_nosave();
+		}
 #endif
+		if (strncmp(str, "nonvs", 5) == 0)
+			acpi_nvs_nosave();
 		if (strncmp(str, "old_ordering", 12) == 0)
 			acpi_old_suspend_ordering();
 		str = strchr(str, ',');
diff --git a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
index ce7cde713e71..a36de5bbb622 100644
--- a/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c
@@ -368,22 +368,16 @@ static int __init pcc_cpufreq_do_osc(acpi_handle *handle)
 		return -ENODEV;
 
 	out_obj = output.pointer;
-	if (out_obj->type != ACPI_TYPE_BUFFER) {
-		ret = -ENODEV;
-		goto out_free;
-	}
+	if (out_obj->type != ACPI_TYPE_BUFFER)
+		return -ENODEV;
 
 	errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
-	if (errors) {
-		ret = -ENODEV;
-		goto out_free;
-	}
+	if (errors)
+		return -ENODEV;
 
 	supported = *((u32 *)(out_obj->buffer.pointer + 4));
-	if (!(supported & 0x1)) {
-		ret = -ENODEV;
-		goto out_free;
-	}
+	if (!(supported & 0x1))
+		return -ENODEV;
 
 out_free:
 	kfree(output.pointer);
@@ -397,13 +391,17 @@ static int __init pcc_cpufreq_probe(void)
 	struct pcc_memory_resource *mem_resource;
 	struct pcc_register_resource *reg_resource;
 	union acpi_object *out_obj, *member;
-	acpi_handle handle, osc_handle;
+	acpi_handle handle, osc_handle, pcch_handle;
 	int ret = 0;
 
 	status = acpi_get_handle(NULL, "\\_SB", &handle);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
+	status = acpi_get_handle(handle, "PCCH", &pcch_handle);
+	if (ACPI_FAILURE(status))
+		return -ENODEV;
+
 	status = acpi_get_handle(handle, "_OSC", &osc_handle);
 	if (ACPI_SUCCESS(status)) {
 		ret = pcc_cpufreq_do_osc(&osc_handle);
@@ -543,13 +541,13 @@ static int pcc_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	if (!pcch_virt_addr) {
 		result = -1;
-		goto pcch_null;
+		goto out;
 	}
 
 	result = pcc_get_offset(cpu);
 	if (result) {
 		dprintk("init: PCCP evaluation failed\n");
-		goto free;
+		goto out;
 	}
 
 	policy->max = policy->cpuinfo.max_freq =
@@ -558,14 +556,15 @@ static int pcc_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		ioread32(&pcch_hdr->minimum_frequency) * 1000;
 	policy->cur = pcc_get_freq(cpu);
 
+	if (!policy->cur) {
+		dprintk("init: Unable to get current CPU frequency\n");
+		result = -EINVAL;
+		goto out;
+	}
+
 	dprintk("init: policy->max is %d, policy->min is %d\n",
 		policy->max, policy->min);
-
-	return 0;
-free:
-	pcc_clear_mapping();
-	free_percpu(pcc_cpu_info);
-pcch_null:
+out:
 	return result;
 }
 
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 7ec2123838e6..3e90cce3dc8b 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1023,13 +1023,12 @@ static int get_transition_latency(struct powernow_k8_data *data)
 	}
 	if (max_latency == 0) {
 		/*
-		 * Fam 11h always returns 0 as transition latency.
-		 * This is intended and means "very fast". While cpufreq core
-		 * and governors currently can handle that gracefully, better
-		 * set it to 1 to avoid problems in the future.
-		 * For all others it's a BIOS bug.
+		 * Fam 11h and later may return 0 as transition latency. This
+		 * is intended and means "very fast". While cpufreq core and
+		 * governors currently can handle that gracefully, better set it
+		 * to 1 to avoid problems in the future.
 		 */
-		if (boot_cpu_data.x86 != 0x11)
+		if (boot_cpu_data.x86 < 0x11)
 			printk(KERN_ERR FW_WARN PFX "Invalid zero transition "
 				"latency\n");
 		max_latency = 1;
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 0697ff139837..4db7c4d12ffa 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -571,8 +571,8 @@ auditsys:
 	 * masked off.
 	 */
 sysret_audit:
-	movq %rax,%rsi		/* second arg, syscall return value */
-	cmpq $0,%rax		/* is it < 0? */
+	movq RAX-ARGOFFSET(%rsp),%rsi	/* second arg, syscall return value */
+	cmpq $0,%rsi		/* is it < 0? */
 	setl %al		/* 1 if so, 0 if not */
 	movzbl %al,%edi		/* zero-extend that into %edi */
 	inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index a198b7c87a12..ba390d731175 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -964,7 +964,7 @@ fs_initcall(hpet_late_init);
 
 void hpet_disable(void)
 {
-	if (is_hpet_capable()) {
+	if (is_hpet_capable() && hpet_virt_address) {
 		unsigned int cfg = hpet_readl(HPET_CFG);
 
 		if (hpet_legacy_int_enabled) {
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c
index 7c9f02c130f3..cafa7c80ac95 100644
--- a/arch/x86/kernel/i8259.c
+++ b/arch/x86/kernel/i8259.c
@@ -276,16 +276,6 @@ static struct sys_device device_i8259A = {
 	.cls	= &i8259_sysdev_class,
 };
 
-static int __init i8259A_init_sysfs(void)
-{
-	int error = sysdev_class_register(&i8259_sysdev_class);
-	if (!error)
-		error = sysdev_register(&device_i8259A);
-	return error;
-}
-
-device_initcall(i8259A_init_sysfs);
-
 static void mask_8259A(void)
 {
 	unsigned long flags;
@@ -407,3 +397,18 @@ struct legacy_pic default_legacy_pic = {
 };
 
 struct legacy_pic *legacy_pic = &default_legacy_pic;
+
+static int __init i8259A_init_sysfs(void)
+{
+	int error;
+
+	if (legacy_pic != &default_legacy_pic)
+		return 0;
+
+	error = sysdev_class_register(&i8259_sysdev_class);
+	if (!error)
+		error = sysdev_register(&device_i8259A);
+	return error;
+}
+
+device_initcall(i8259A_init_sysfs);
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 4f4af75b9482..01ab17ae2ae7 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -572,7 +572,6 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
 	return NOTIFY_STOP;
 }
 
-#ifdef CONFIG_KGDB_LOW_LEVEL_TRAP
 int kgdb_ll_trap(int cmd, const char *str,
 		 struct pt_regs *regs, long err, int trap, int sig)
 {
@@ -590,7 +589,6 @@ int kgdb_ll_trap(int cmd, const char *str,
 
 	return __kgdb_notify(&args, cmd);
 }
-#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
 
 static int
 kgdb_notify(struct notifier_block *self, unsigned long cmd, void *ptr)
@@ -625,6 +623,12 @@ int kgdb_arch_init(void)
 	return register_die_notifier(&kgdb_notifier);
 }
 
+static void kgdb_hw_overflow_handler(struct perf_event *event, int nmi,
+		struct perf_sample_data *data, struct pt_regs *regs)
+{
+	kgdb_ll_trap(DIE_DEBUG, "debug", regs, 0, 0, SIGTRAP);
+}
+
 void kgdb_arch_late(void)
 {
 	int i, cpu;
@@ -655,6 +659,7 @@ void kgdb_arch_late(void)
 		for_each_online_cpu(cpu) {
 			pevent = per_cpu_ptr(breakinfo[i].pev, cpu);
 			pevent[0]->hw.sample_period = 1;
+			pevent[0]->overflow_handler = kgdb_hw_overflow_handler;
 			if (pevent[0]->destroy != NULL) {
 				pevent[0]->destroy = NULL;
 				release_bp_slot(*pevent);
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 89d66ca4d87c..2331bdc2b549 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -342,6 +342,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 			/* advance table_gfn when emulating 1gb pages with 4k */
 			if (delta == 0)
 				table_gfn += PT_INDEX(addr, level);
+			access &= gw->pte_access;
 		} else {
 			direct = 0;
 			table_gfn = gw->table_gfn[level - 2];
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 05d571f6f196..7fa89c39c64f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1562,7 +1562,7 @@ static int msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs __user *user_msrs,
 
 	r = -ENOMEM;
 	size = sizeof(struct kvm_msr_entry) * msrs.nmsrs;
-	entries = vmalloc(size);
+	entries = kmalloc(size, GFP_KERNEL);
 	if (!entries)
 		goto out;
 
@@ -1581,7 +1581,7 @@ static int msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs __user *user_msrs,
 	r = n;
 
 out_free:
-	vfree(entries);
+	kfree(entries);
 out:
 	return r;
 }