Merge branch 'v3.5-for-usb' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into usb-next

57 files changed, 390 insertions, 210 deletions

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 80abafb9bf3..9650c143afc 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -906,27 +906,14 @@ long arch_ptrace(struct task_struct *child, long request,
 	return ret;
 }
 
-#ifdef __ARMEB__
-#define AUDIT_ARCH_NR AUDIT_ARCH_ARMEB
-#else
-#define AUDIT_ARCH_NR AUDIT_ARCH_ARM
-#endif
-
 asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
 {
 	unsigned long ip;
 
-	/*
-	 * Save IP.  IP is used to denote syscall entry/exit:
-	 *  IP = 0 -> entry, = 1 -> exit
-	 */
-	ip = regs->ARM_ip;
-	regs->ARM_ip = why;
-
-	if (!ip)
+	if (why)
 		audit_syscall_exit(regs);
 	else
-		audit_syscall_entry(AUDIT_ARCH_NR, scno, regs->ARM_r0,
+		audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0,
 				    regs->ARM_r1, regs->ARM_r2, regs->ARM_r3);
 
 	if (!test_thread_flag(TIF_SYSCALL_TRACE))
@@ -936,6 +923,13 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
 
 	current_thread_info()->syscall = scno;
 
+	/*
+	 * IP is used to denote syscall entry/exit:
+	 * IP = 0 -> entry, =1 -> exit
+	 */
+	ip = regs->ARM_ip;
+	regs->ARM_ip = why;
+
 	/* the 0x80 provides a way for the tracing parent to distinguish
 	   between a syscall stop and SIGTRAP delivery */
 	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index f6a4d32b042..8f464465977 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -251,8 +251,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	struct mm_struct *mm = &init_mm;
 	unsigned int cpu = smp_processor_id();
 
-	printk("CPU%u: Booted secondary processor\n", cpu);
-
 	/*
 	 * All kernel threads share the same mm context; grab a
 	 * reference and switch to it.
@@ -264,6 +262,8 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	enter_lazy_tlb(mm, current);
 	local_flush_tlb_all();
 
+	printk("CPU%u: Booted secondary processor\n", cpu);
+
 	cpu_init();
 	preempt_disable();
 	trace_hardirqs_off();
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index d2b177905cd..76cbb055dd0 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -115,7 +115,7 @@ int kernel_execve(const char *filename,
 		  "Ir" (THREAD_START_SP - sizeof(regs)),
 		  "r" (&regs),
 		  "Ir" (sizeof(regs))
-		: "r0", "r1", "r2", "r3", "ip", "lr", "memory");
+		: "r0", "r1", "r2", "r3", "r8", "r9", "ip", "lr", "memory");
 
  out:
 	return ret;
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index e81c35f936b..a6a6a9417a0 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -232,6 +232,9 @@ config MACH_ARMLEX4210
 config MACH_UNIVERSAL_C210
 	bool "Mobile UNIVERSAL_C210 Board"
 	select CPU_EXYNOS4210
+	select S5P_HRT
+	select CLKSRC_MMIO
+	select HAVE_SCHED_CLOCK
 	select S5P_GPIO_INT
 	select S5P_DEV_FIMC0
 	select S5P_DEV_FIMC1
@@ -247,6 +250,7 @@ config MACH_UNIVERSAL_C210
 	select S3C_DEV_I2C1
 	select S3C_DEV_I2C3
 	select S3C_DEV_I2C5
+	select S3C_DEV_USB_HSOTG
 	select S5P_DEV_I2C_HDMIPHY
 	select S5P_DEV_MFC
 	select S5P_DEV_ONENAND
@@ -259,6 +263,7 @@ config MACH_UNIVERSAL_C210
 	select EXYNOS4_SETUP_SDHCI
 	select EXYNOS4_SETUP_FIMC
 	select S5P_SETUP_MIPIPHY
+	select EXYNOS4_SETUP_USB_PHY
 	help
 	  Machine support for Samsung Mobile Universal S5PC210 Reference
 	  Board.
@@ -277,6 +282,7 @@ config MACH_NURI
 	select S3C_DEV_I2C3
 	select S3C_DEV_I2C5
 	select S3C_DEV_I2C6
+	select S3C_DEV_USB_HSOTG
 	select S5P_DEV_CSIS0
 	select S5P_DEV_JPEG
 	select S5P_DEV_FIMC0
diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c
index 5cd7a8b8868..7ac6ff4c46b 100644
--- a/arch/arm/mach-exynos/clock-exynos5.c
+++ b/arch/arm/mach-exynos/clock-exynos5.c
@@ -678,7 +678,7 @@ static struct clk exynos5_clk_pdma1 = {
 	.name		= "dma",
 	.devname	= "dma-pl330.1",
 	.enable		= exynos5_clk_ip_fsys_ctrl,
-	.ctrlbit	= (1 << 1),
+	.ctrlbit	= (1 << 2),
 };
 
 static struct clk exynos5_clk_mdma1 = {
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index 591e78521a9..c02dae7bf4a 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -189,6 +189,7 @@
 #define IRQ_IIC7			EXYNOS4_IRQ_IIC7
 
 #define IRQ_USB_HOST			EXYNOS4_IRQ_USB_HOST
+#define IRQ_OTG				EXYNOS4_IRQ_USB_HSOTG
 
 #define IRQ_HSMMC0			EXYNOS4_IRQ_HSMMC0
 #define IRQ_HSMMC1			EXYNOS4_IRQ_HSMMC1
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 6e6d11ff352..e009a66477f 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -130,6 +130,9 @@
 #define EXYNOS4_PA_HSMMC(x)		(0x12510000 + ((x) * 0x10000))
 #define EXYNOS4_PA_DWMCI		0x12550000
 
+#define EXYNOS4_PA_HSOTG		0x12480000
+#define EXYNOS4_PA_USB_HSPHY		0x125B0000
+
 #define EXYNOS4_PA_SATA			0x12560000
 #define EXYNOS4_PA_SATAPHY		0x125D0000
 #define EXYNOS4_PA_SATAPHY_CTRL		0x126B0000
@@ -186,6 +189,7 @@
 #define S3C_PA_SPI0			EXYNOS4_PA_SPI0
 #define S3C_PA_SPI1			EXYNOS4_PA_SPI1
 #define S3C_PA_SPI2			EXYNOS4_PA_SPI2
+#define S3C_PA_USB_HSOTG		EXYNOS4_PA_HSOTG
 
 #define S5P_PA_EHCI			EXYNOS4_PA_EHCI
 #define S5P_PA_FIMC0			EXYNOS4_PA_FIMC0
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 4c53f38b5a9..d457d052a42 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -163,6 +163,9 @@
 #define S5P_CHECK_SLEEP				0x00000BAD
 
 /* Only for EXYNOS4210 */
+#define S5P_USBDEVICE_PHY_CONTROL	S5P_PMUREG(0x0704)
+#define S5P_USBDEVICE_PHY_ENABLE	(1 << 0)
+
 #define S5P_USBHOST_PHY_CONTROL		S5P_PMUREG(0x0708)
 #define S5P_USBHOST_PHY_ENABLE		(1 << 0)
 
diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c
index 2c6d701116b..a60269d0a11 100644
--- a/arch/arm/mach-exynos/mach-nuri.c
+++ b/arch/arm/mach-exynos/mach-nuri.c
@@ -352,6 +352,7 @@ static struct regulator_consumer_supply __initdata max8997_ldo1_[] = {
 	REGULATOR_SUPPLY("vdd", "s5p-adc"), /* Used by CPU's ADC drv */
 };
 static struct regulator_consumer_supply __initdata max8997_ldo3_[] = {
+	REGULATOR_SUPPLY("vusb_d", "s3c-hsotg"), /* USB */
 	REGULATOR_SUPPLY("vdd11", "s5p-mipi-csis.0"), /* MIPI */
 };
 static struct regulator_consumer_supply __initdata max8997_ldo4_[] = {
@@ -367,7 +368,7 @@ static struct regulator_consumer_supply __initdata max8997_ldo7_[] = {
 	REGULATOR_SUPPLY("dig_18", "0-001f"), /* HCD803 */
 };
 static struct regulator_consumer_supply __initdata max8997_ldo8_[] = {
-	REGULATOR_SUPPLY("vusb_d", NULL), /* Used by CPU */
+	REGULATOR_SUPPLY("vusb_a", "s3c-hsotg"), /* USB */
 	REGULATOR_SUPPLY("vdac", NULL), /* Used by CPU */
 };
 static struct regulator_consumer_supply __initdata max8997_ldo11_[] = {
@@ -823,6 +824,7 @@ static struct regulator_init_data __initdata max8997_esafeout1_data = {
 	.constraints	= {
 		.name		= "SAFEOUT1",
 		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
+		.always_on	= 1,
 		.state_mem	= {
 			.disabled	= 1,
 		},
@@ -1080,6 +1082,9 @@ static void __init nuri_ehci_init(void)
 	s5p_ehci_set_platdata(pdata);
 }
 
+/* USB OTG */
+static struct s3c_hsotg_plat nuri_hsotg_pdata;
+
 /* CAMERA */
 static struct regulator_consumer_supply cam_vt_cam15_supply =
 	REGULATOR_SUPPLY("vdd_core", "6-003c");
@@ -1292,6 +1297,7 @@ static struct platform_device *nuri_devices[] __initdata = {
 	&s5p_device_mfc_l,
 	&s5p_device_mfc_r,
 	&s5p_device_fimc_md,
+	&s3c_device_usb_hsotg,
 
 	/* NURI Devices */
 	&nuri_gpio_keys,
@@ -1340,6 +1346,7 @@ static void __init nuri_machine_init(void)
 	nuri_camera_init();
 
 	nuri_ehci_init();
+	s3c_hsotg_set_platdata(&nuri_hsotg_pdata);
 
 	/* Last */
 	platform_add_devices(nuri_devices, ARRAY_SIZE(nuri_devices));
diff --git a/arch/arm/mach-exynos/mach-universal_c210.c b/arch/arm/mach-exynos/mach-universal_c210.c
index bc8bf3b4fe4..9be8a07d7d0 100644
--- a/arch/arm/mach-exynos/mach-universal_c210.c
+++ b/arch/arm/mach-exynos/mach-universal_c210.c
@@ -41,6 +41,7 @@
 #include <plat/pd.h>
 #include <plat/regs-fb-v4.h>
 #include <plat/fimc-core.h>
+#include <plat/s5p-time.h>
 #include <plat/camport.h>
 #include <plat/mipi_csis.h>
 
@@ -205,6 +206,7 @@ static struct regulator_init_data lp3974_ldo2_data = {
 };
 
 static struct regulator_consumer_supply lp3974_ldo3_consumer[] = {
+	REGULATOR_SUPPLY("vusb_a", "s3c-hsotg"),
 	REGULATOR_SUPPLY("vdd", "exynos4-hdmi"),
 	REGULATOR_SUPPLY("vdd_pll", "exynos4-hdmi"),
 	REGULATOR_SUPPLY("vdd11", "s5p-mipi-csis.0"),
@@ -290,6 +292,7 @@ static struct regulator_init_data lp3974_ldo7_data = {
 };
 
 static struct regulator_consumer_supply lp3974_ldo8_consumer[] = {
+	REGULATOR_SUPPLY("vusb_d", "s3c-hsotg"),
 	REGULATOR_SUPPLY("vdd33a_dac", "s5p-sdo"),
 };
 
@@ -486,7 +489,10 @@ static struct regulator_init_data lp3974_vichg_data = {
 static struct regulator_init_data lp3974_esafeout1_data = {
 	.constraints	= {
 		.name		= "SAFEOUT1",
+		.min_uV		= 4800000,
+		.max_uV		= 4800000,
 		.valid_ops_mask	= REGULATOR_CHANGE_STATUS,
+		.always_on	= 1,
 		.state_mem	= {
 			.enabled	= 1,
 		},
@@ -994,6 +1000,9 @@ static struct gpio universal_camera_gpios[] = {
 	{ GPIO_CAM_VGA_NSTBY,	GPIOF_OUT_INIT_LOW,  "CAM_VGA_NSTBY" },
 };
 
+/* USB OTG */
+static struct s3c_hsotg_plat universal_hsotg_pdata;
+
 static void __init universal_camera_init(void)
 {
 	s3c_set_platdata(&mipi_csis_platdata, sizeof(mipi_csis_platdata),
@@ -1049,6 +1058,7 @@ static struct platform_device *universal_devices[] __initdata = {
 	&s5p_device_onenand,
 	&s5p_device_fimd0,
 	&s5p_device_jpeg,
+	&s3c_device_usb_hsotg,
 	&s5p_device_mfc,
 	&s5p_device_mfc_l,
 	&s5p_device_mfc_r,
@@ -1064,6 +1074,7 @@ static void __init universal_map_io(void)
 	exynos_init_io(NULL, 0);
 	s3c24xx_init_clocks(24000000);
 	s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs));
+	s5p_set_timer_source(S5P_PWM2, S5P_PWM4);
 }
 
 static void s5p_tv_setup(void)
@@ -1101,6 +1112,7 @@ static void __init universal_machine_init(void)
 	i2c_register_board_info(I2C_GPIO_BUS_12, i2c_gpio12_devs,
 			ARRAY_SIZE(i2c_gpio12_devs));
 
+	s3c_hsotg_set_platdata(&universal_hsotg_pdata);
 	universal_camera_init();
 
 	/* Last */
@@ -1114,7 +1126,7 @@ MACHINE_START(UNIVERSAL_C210, "UNIVERSAL_C210")
 	.map_io		= universal_map_io,
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= universal_machine_init,
-	.timer		= &exynos4_timer,
+	.timer		= &s5p_timer,
 	.reserve        = &universal_reserve,
 	.restart	= exynos4_restart,
 MACHINE_END
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 41743d21e8c..1af0a7f44e0 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -26,11 +26,71 @@ static int exynos4_usb_host_phy_is_on(void)
 	return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
 }
 
-static int exynos4_usb_phy1_init(struct platform_device *pdev)
+static void exynos4210_usb_phy_clkset(struct platform_device *pdev)
 {
-	struct clk *otg_clk;
 	struct clk *xusbxti_clk;
 	u32 phyclk;
+
+	/* set clock frequency for PLL */
+	phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
+
+	xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
+	if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
+		switch (clk_get_rate(xusbxti_clk)) {
+		case 12 * MHZ:
+			phyclk |= CLKSEL_12M;
+			break;
+		case 24 * MHZ:
+			phyclk |= CLKSEL_24M;
+			break;
+		default:
+		case 48 * MHZ:
+			/* default reference clock */
+			break;
+		}
+		clk_put(xusbxti_clk);
+	}
+
+	writel(phyclk, EXYNOS4_PHYCLK);
+}
+
+static int exynos4210_usb_phy0_init(struct platform_device *pdev)
+{
+	u32 rstcon;
+
+	writel(readl(S5P_USBDEVICE_PHY_CONTROL) | S5P_USBDEVICE_PHY_ENABLE,
+			S5P_USBDEVICE_PHY_CONTROL);
+
+	exynos4210_usb_phy_clkset(pdev);
+
+	/* set to normal PHY0 */
+	writel((readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK), EXYNOS4_PHYPWR);
+
+	/* reset PHY0 and Link */
+	rstcon = readl(EXYNOS4_RSTCON) | PHY0_SWRST_MASK;
+	writel(rstcon, EXYNOS4_RSTCON);
+	udelay(10);
+
+	rstcon &= ~PHY0_SWRST_MASK;
+	writel(rstcon, EXYNOS4_RSTCON);
+
+	return 0;
+}
+
+static int exynos4210_usb_phy0_exit(struct platform_device *pdev)
+{
+	writel((readl(EXYNOS4_PHYPWR) | PHY0_ANALOG_POWERDOWN |
+				PHY0_OTG_DISABLE), EXYNOS4_PHYPWR);
+
+	writel(readl(S5P_USBDEVICE_PHY_CONTROL) & ~S5P_USBDEVICE_PHY_ENABLE,
+			S5P_USBDEVICE_PHY_CONTROL);
+
+	return 0;
+}
+
+static int exynos4210_usb_phy1_init(struct platform_device *pdev)
+{
+	struct clk *otg_clk;
 	u32 rstcon;
 	int err;
 
@@ -54,27 +114,7 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
 	writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
 			S5P_USBHOST_PHY_CONTROL);
 
-	/* set clock frequency for PLL */
-	phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
-
-	xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
-	if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
-		switch (clk_get_rate(xusbxti_clk)) {
-		case 12 * MHZ:
-			phyclk |= CLKSEL_12M;
-			break;
-		case 24 * MHZ:
-			phyclk |= CLKSEL_24M;
-			break;
-		default:
-		case 48 * MHZ:
-			/* default reference clock */
-			break;
-		}
-		clk_put(xusbxti_clk);
-	}
-
-	writel(phyclk, EXYNOS4_PHYCLK);
+	exynos4210_usb_phy_clkset(pdev);
 
 	/* floating prevention logic: disable */
 	writel((readl(EXYNOS4_PHY1CON) | FPENABLEN), EXYNOS4_PHY1CON);
@@ -102,7 +142,7 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
 	return 0;
 }
 
-static int exynos4_usb_phy1_exit(struct platform_device *pdev)
+static int exynos4210_usb_phy1_exit(struct platform_device *pdev)
 {
 	struct clk *otg_clk;
 	int err;
@@ -136,16 +176,20 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
 
 int s5p_usb_phy_init(struct platform_device *pdev, int type)
 {
-	if (type == S5P_USB_PHY_HOST)
-		return exynos4_usb_phy1_init(pdev);
+	if (type == S5P_USB_PHY_DEVICE)
+		return exynos4210_usb_phy0_init(pdev);
+	else if (type == S5P_USB_PHY_HOST)
+		return exynos4210_usb_phy1_init(pdev);
 
 	return -EINVAL;
 }
 
 int s5p_usb_phy_exit(struct platform_device *pdev, int type)
 {
-	if (type == S5P_USB_PHY_HOST)
-		return exynos4_usb_phy1_exit(pdev);
+	if (type == S5P_USB_PHY_DEVICE)
+		return exynos4210_usb_phy0_exit(pdev);
+	else if (type == S5P_USB_PHY_HOST)
+		return exynos4210_usb_phy1_exit(pdev);
 
 	return -EINVAL;
 }
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index 1c672d9e665..f7fe1b9f317 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -14,6 +14,7 @@
 #include <linux/init.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/kexec.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <mach/bridge-regs.h>
diff --git a/arch/arm/mach-omap1/ams-delta-fiq.c b/arch/arm/mach-omap1/ams-delta-fiq.c
index fcce7ff3763..cfd98b186fc 100644
--- a/arch/arm/mach-omap1/ams-delta-fiq.c
+++ b/arch/arm/mach-omap1/ams-delta-fiq.c
@@ -48,7 +48,7 @@ static irqreturn_t deferred_fiq(int irq, void *dev_id)
 	struct irq_chip *irq_chip = NULL;
 	int gpio, irq_num, fiq_count;
 
-	irq_desc = irq_to_desc(IH_GPIO_BASE);
+	irq_desc = irq_to_desc(gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK));
 	if (irq_desc)
 		irq_chip = irq_desc->irq_data.chip;
 
diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c
index 930c0d38043..740cee9369b 100644
--- a/arch/arm/mach-omap2/board-igep0020.c
+++ b/arch/arm/mach-omap2/board-igep0020.c
@@ -641,7 +641,7 @@ static struct regulator_consumer_supply dummy_supplies[] = {
 
 static void __init igep_init(void)
 {
-	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
+	regulator_register_fixed(1, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 
 	/* Get IGEP2 hardware revision */
diff --git a/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h b/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h
index 1e2d3322f33..c88420de115 100644
--- a/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h
+++ b/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h
@@ -941,10 +941,10 @@
 #define OMAP4_DSI2_LANEENABLE_MASK				(0x7 << 29)
 #define OMAP4_DSI1_LANEENABLE_SHIFT				24
 #define OMAP4_DSI1_LANEENABLE_MASK				(0x1f << 24)
-#define OMAP4_DSI2_PIPD_SHIFT					19
-#define OMAP4_DSI2_PIPD_MASK					(0x1f << 19)
-#define OMAP4_DSI1_PIPD_SHIFT					14
-#define OMAP4_DSI1_PIPD_MASK					(0x1f << 14)
+#define OMAP4_DSI1_PIPD_SHIFT					19
+#define OMAP4_DSI1_PIPD_MASK					(0x1f << 19)
+#define OMAP4_DSI2_PIPD_SHIFT					14
+#define OMAP4_DSI2_PIPD_MASK					(0x1f << 14)
 
 /* CONTROL_MCBSPLP */
 #define OMAP4_ALBCTRLRX_FSX_SHIFT				31
diff --git a/arch/arm/mach-orion5x/mpp.h b/arch/arm/mach-orion5x/mpp.h
index eac68978a2c..db70e79a119 100644
--- a/arch/arm/mach-orion5x/mpp.h
+++ b/arch/arm/mach-orion5x/mpp.h
@@ -65,8 +65,8 @@
 #define MPP8_GIGE               MPP(8,  0x1, 0, 0, 1,   1,   1)
 
 #define MPP9_UNUSED		MPP(9,  0x0, 0, 0, 1,   1,   1)
-#define MPP9_GPIO		MPP(9,  0x0, 0, 0, 1,   1,   1)
-#define MPP9_GIGE               MPP(9,  0x1, 1, 1, 1,   1,   1)
+#define MPP9_GPIO		MPP(9,  0x0, 1, 1, 1,   1,   1)
+#define MPP9_GIGE               MPP(9,  0x1, 0, 0, 1,   1,   1)
 
 #define MPP10_UNUSED		MPP(10, 0x0, 0, 0, 1,   1,   1)
 #define MPP10_GPIO		MPP(10, 0x0, 1, 1, 1,   1,   1)
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 29594fc4fdf..88e983b0c82 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -85,6 +85,7 @@ config MACH_AQUILA
 	select S5P_DEV_ONENAND
 	select S5PV210_SETUP_FB_24BPP
 	select S5PV210_SETUP_SDHCI
+	select S5PV210_SETUP_USB_PHY
 	help
 	  Machine support for the Samsung Aquila target based on S5PC110 SoC
 
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 93ab278dadd..f20a97c8e41 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -279,6 +279,9 @@ static void __init goni_tsp_init(void)
 	i2c2_devs[0].irq = gpio_to_irq(gpio);
 }
 
+/* USB OTG */
+static struct s3c_hsotg_plat goni_hsotg_pdata;
+
 static void goni_camera_init(void)
 {
 	s5pv210_fimc_setup_gpio(S5P_CAMPORT_A);
@@ -942,6 +945,8 @@ static void __init goni_machine_init(void)
 	s3c_set_platdata(&goni_fimc_md_platdata, sizeof(goni_fimc_md_platdata),
 			 &s5p_device_fimc_md);
 
+	s3c_hsotg_set_platdata(&goni_hsotg_pdata);
+
 	goni_camera_init();
 
 	/* SPI */
diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index cb224a344af..0891ec6e27f 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -365,23 +365,13 @@ static struct platform_device mipidsi0_device = {
 };
 
 /* SDHI0 */
-static irqreturn_t ag5evm_sdhi0_gpio_cd(int irq, void *arg)
-{
-	struct device *dev = arg;
-	struct sh_mobile_sdhi_info *info = dev->platform_data;
-	struct tmio_mmc_data *pdata = info->pdata;
-
-	tmio_mmc_cd_wakeup(pdata);
-
-	return IRQ_HANDLED;
-}
-
 static struct sh_mobile_sdhi_info sdhi0_info = {
 	.dma_slave_tx	= SHDMA_SLAVE_SDHI0_TX,
 	.dma_slave_rx	= SHDMA_SLAVE_SDHI0_RX,
-	.tmio_flags	= TMIO_MMC_HAS_IDLE_WAIT,
+	.tmio_flags	= TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_USE_GPIO_CD,
 	.tmio_caps	= MMC_CAP_SD_HIGHSPEED,
 	.tmio_ocr_mask	= MMC_VDD_27_28 | MMC_VDD_28_29,
+	.cd_gpio	= GPIO_PORT251,
 };
 
 static struct resource sdhi0_resources[] = {
@@ -557,7 +547,6 @@ static void __init ag5evm_init(void)
 	lcd_backlight_reset();
 
 	/* enable SDHI0 on CN15 [SD I/F] */
-	gpio_request(GPIO_FN_SDHICD0, NULL);
 	gpio_request(GPIO_FN_SDHIWP0, NULL);
 	gpio_request(GPIO_FN_SDHICMD0, NULL);
 	gpio_request(GPIO_FN_SDHICLK0, NULL);
@@ -566,13 +555,6 @@ static void __init ag5evm_init(void)
 	gpio_request(GPIO_FN_SDHID0_1, NULL);
 	gpio_request(GPIO_FN_SDHID0_0, NULL);
 
-	if (!request_irq(intcs_evt2irq(0x3c0), ag5evm_sdhi0_gpio_cd,
-			 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
-			 "sdhi0 cd", &sdhi0_device.dev))
-		sdhi0_info.tmio_flags |= TMIO_MMC_HAS_COLD_CD;
-	else
-		pr_warn("Unable to setup SDHI0 GPIO IRQ\n");
-
 	/* enable SDHI1 on CN4 [WLAN I/F] */
 	gpio_request(GPIO_FN_SDHICLK1, NULL);
 	gpio_request(GPIO_FN_SDHICMD1_PU, NULL);
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index f49e28abe0a..8c6202bb6ae 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -1011,21 +1011,12 @@ static int slot_cn7_get_cd(struct platform_device *pdev)
 }
 
 /* SDHI0 */
-static irqreturn_t mackerel_sdhi0_gpio_cd(int irq, void *arg)
-{
-	struct device *dev = arg;
-	struct sh_mobile_sdhi_info *info = dev->platform_data;
-	struct tmio_mmc_data *pdata = info->pdata;
-
-	tmio_mmc_cd_wakeup(pdata);
-
-	return IRQ_HANDLED;
-}
-
 static struct sh_mobile_sdhi_info sdhi0_info = {
 	.dma_slave_tx	= SHDMA_SLAVE_SDHI0_TX,
 	.dma_slave_rx	= SHDMA_SLAVE_SDHI0_RX,
+	.tmio_flags	= TMIO_MMC_USE_GPIO_CD,
 	.tmio_caps	= MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
+	.cd_gpio	= GPIO_PORT172,
 };
 
 static struct resource sdhi0_resources[] = {
@@ -1384,7 +1375,6 @@ static void __init mackerel_init(void)
 {
 	u32 srcr4;
 	struct clk *clk;
-	int ret;
 
 	/* External clock source */
 	clk_set_rate(&sh7372_dv_clki_clk, 27000000);
@@ -1481,7 +1471,6 @@ static void __init mackerel_init(void)
 	irq_set_irq_type(IRQ21, IRQ_TYPE_LEVEL_HIGH);
 
 	/* enable SDHI0 */
-	gpio_request(GPIO_FN_SDHICD0, NULL);
 	gpio_request(GPIO_FN_SDHIWP0, NULL);
 	gpio_request(GPIO_FN_SDHICMD0, NULL);
 	gpio_request(GPIO_FN_SDHICLK0, NULL);
@@ -1490,13 +1479,6 @@ static void __init mackerel_init(void)
 	gpio_request(GPIO_FN_SDHID0_1, NULL);
 	gpio_request(GPIO_FN_SDHID0_0, NULL);
 
-	ret = request_irq(evt2irq(0x3340), mackerel_sdhi0_gpio_cd,
-			  IRQF_TRIGGER_FALLING, "sdhi0 cd", &sdhi0_device.dev);
-	if (!ret)
-		sdhi0_info.tmio_flags |= TMIO_MMC_HAS_COLD_CD;
-	else
-		pr_err("Cannot get IRQ #%d: %d\n", evt2irq(0x3340), ret);
-
 #if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)
 	/* enable SDHI1 */
 	gpio_request(GPIO_FN_SDHICMD1, NULL);
diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S
index 6ac015c8920..b202c127252 100644
--- a/arch/arm/mach-shmobile/headsmp.S
+++ b/arch/arm/mach-shmobile/headsmp.S
@@ -16,6 +16,59 @@
 
 	__CPUINIT
 
+/* Cache invalidation nicked from arch/arm/mach-imx/head-v7.S, thanks!
+ *
+ * The secondary kernel init calls v7_flush_dcache_all before it enables
+ * the L1; however, the L1 comes out of reset in an undefined state, so
+ * the clean + invalidate performed by v7_flush_dcache_all causes a bunch
+ * of cache lines with uninitialized data and uninitialized tags to get
+ * written out to memory, which does really unpleasant things to the main
+ * processor.  We fix this by performing an invalidate, rather than a
+ * clean + invalidate, before jumping into the kernel.
+ *
+ * This funciton is cloned from arch/arm/mach-tegra/headsmp.S, and needs
+ * to be called for both secondary cores startup and primary core resume
+ * procedures.  Ideally, it should be moved into arch/arm/mm/cache-v7.S.
+ */
+ENTRY(v7_invalidate_l1)
+	mov	r0, #0
+	mcr	p15, 0, r0, c7, c5, 0	@ invalidate I cache
+	mcr	p15, 2, r0, c0, c0, 0
+	mrc	p15, 1, r0, c0, c0, 0
+
+	ldr	r1, =0x7fff
+	and	r2, r1, r0, lsr #13
+
+	ldr	r1, =0x3ff
+
+	and	r3, r1, r0, lsr #3	@ NumWays - 1
+	add	r2, r2, #1		@ NumSets
+
+	and	r0, r0, #0x7
+	add	r0, r0, #4	@ SetShift
+
+	clz	r1, r3		@ WayShift
+	add	r4, r3, #1	@ NumWays
+1:	sub	r2, r2, #1	@ NumSets--
+	mov	r3, r4		@ Temp = NumWays
+2:	subs	r3, r3, #1	@ Temp--
+	mov	r5, r3, lsl r1
+	mov	r6, r2, lsl r0
+	orr	r5, r5, r6	@ Reg = (Temp<<WayShift)|(NumSets<<SetShift)
+	mcr	p15, 0, r5, c7, c6, 2
+	bgt	2b
+	cmp	r2, #0
+	bgt	1b
+	dsb
+	isb
+	mov	pc, lr
+ENDPROC(v7_invalidate_l1)
+
+ENTRY(shmobile_invalidate_start)
+	bl	v7_invalidate_l1
+	b	secondary_startup
+ENDPROC(shmobile_invalidate_start)
+
 /*
  * Reset vector for secondary CPUs.
  * This will be mapped at address 0 by SBAR register.
@@ -24,4 +77,5 @@
 	.align  12
 ENTRY(shmobile_secondary_vector)
 	ldr     pc, 1f
-1:	.long   secondary_startup - PAGE_OFFSET + PLAT_PHYS_OFFSET
+1:	.long   shmobile_invalidate_start - PAGE_OFFSET + PLAT_PHYS_OFFSET
+ENDPROC(shmobile_secondary_vector)
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 83ad3fe0a75..c85e6ecda60 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -4,7 +4,6 @@
 extern void shmobile_earlytimer_init(void);
 extern struct sys_timer shmobile_timer;
 struct twd_local_timer;
-void shmobile_twd_init(struct twd_local_timer *twd_local_timer);
 extern void shmobile_setup_console(void);
 extern void shmobile_secondary_vector(void);
 extern int shmobile_platform_cpu_kill(unsigned int cpu);
@@ -82,5 +81,6 @@ extern int r8a7779_platform_cpu_kill(unsigned int cpu);
 extern void r8a7779_secondary_init(unsigned int cpu);
 extern int r8a7779_boot_secondary(unsigned int cpu);
 extern void r8a7779_smp_prepare_cpus(void);
+extern void r8a7779_register_twd(void);
 
 #endif /* __ARCH_MACH_COMMON_H */
diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c
index 12c6f529ab8..e98e46f6cf5 100644
--- a/arch/arm/mach-shmobile/setup-r8a7779.c
+++ b/arch/arm/mach-shmobile/setup-r8a7779.c
@@ -262,10 +262,14 @@ void __init r8a7779_add_standard_devices(void)
 			    ARRAY_SIZE(r8a7779_late_devices));
 }
 
+/* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */
+void __init __weak r8a7779_register_twd(void) { }
+
 static void __init r8a7779_earlytimer_init(void)
 {
 	r8a7779_clock_init();
 	shmobile_earlytimer_init();
+	r8a7779_register_twd();
 }
 
 void __init r8a7779_add_early_devices(void)
diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index 5bebffc1045..04a0dfe7549 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -688,10 +688,14 @@ void __init sh73a0_add_standard_devices(void)
 			    ARRAY_SIZE(sh73a0_late_devices));
 }
 
+/* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */
+void __init __weak sh73a0_register_twd(void) { }
+
 static void __init sh73a0_earlytimer_init(void)
 {
 	sh73a0_clock_init();
 	shmobile_earlytimer_init();
+	sh73a0_register_twd();
 }
 
 void __init sh73a0_add_early_devices(void)
diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c
index b62e19d4c9a..6d1d0238cbf 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -64,8 +64,15 @@ static void __iomem *scu_base_addr(void)
 static DEFINE_SPINLOCK(scu_lock);
 static unsigned long tmp;
 
+#ifdef CONFIG_HAVE_ARM_TWD
 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
 
+void __init r8a7779_register_twd(void)
+{
+	twd_local_timer_register(&twd_local_timer);
+}
+#endif
+
 static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
 {
 	void __iomem *scu_base = scu_base_addr();
@@ -84,7 +91,6 @@ unsigned int __init r8a7779_get_core_count(void)
 {
 	void __iomem *scu_base = scu_base_addr();
 
-	shmobile_twd_init(&twd_local_timer);
 	return scu_get_core_count(scu_base);
 }
 
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index 14ad8b052f1..e36c41c4ab4 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -42,7 +42,13 @@ static void __iomem *scu_base_addr(void)
 static DEFINE_SPINLOCK(scu_lock);
 static unsigned long tmp;
 
+#ifdef CONFIG_HAVE_ARM_TWD
 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
+void __init sh73a0_register_twd(void)
+{
+	twd_local_timer_register(&twd_local_timer);
+}
+#endif
 
 static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
 {
@@ -62,7 +68,6 @@ unsigned int __init sh73a0_get_core_count(void)
 {
 	void __iomem *scu_base = scu_base_addr();
 
-	shmobile_twd_init(&twd_local_timer);
 	return scu_get_core_count(scu_base);
 }
 
diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c
index 2fba5f3d1c8..8b79e7917a2 100644
--- a/arch/arm/mach-shmobile/timer.c
+++ b/arch/arm/mach-shmobile/timer.c
@@ -46,15 +46,6 @@ static void __init shmobile_timer_init(void)
 {
 }
 
-void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer)
-{
-#ifdef CONFIG_HAVE_ARM_TWD
-	int err = twd_local_timer_register(twd_local_timer);
-	if (err)
-		pr_err("twd_local_timer_register failed %d\n", err);
-#endif
-}
-
 struct sys_timer shmobile_timer = {
 	.init		= shmobile_timer_init,
 };
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index f5104b7c52c..463fb3bbe11 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1174,7 +1174,7 @@ out:
 
 bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
 {
-	return irqchip_in_kernel(vcpu->kcm) == (vcpu->arch.apic != NULL);
+	return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL);
 }
 
 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
diff --git a/arch/m68k/platform/520x/config.c b/arch/m68k/platform/520x/config.c
index 235947844f2..09df4b89e8b 100644
--- a/arch/m68k/platform/520x/config.c
+++ b/arch/m68k/platform/520x/config.c
@@ -22,7 +22,7 @@
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m520x_qspi_init(void)
 {
@@ -35,7 +35,7 @@ static void __init m520x_qspi_init(void)
 	writew(par, MCF_GPIO_PAR_UART);
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -79,7 +79,7 @@ void __init config_BSP(char *commandp, int size)
 	mach_sched_init = hw_timer_init;
 	m520x_uarts_init();
 	m520x_fec_init();
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m520x_qspi_init();
 #endif
 }
diff --git a/arch/m68k/platform/523x/config.c b/arch/m68k/platform/523x/config.c
index c8b405d5a96..d47dfd8f50a 100644
--- a/arch/m68k/platform/523x/config.c
+++ b/arch/m68k/platform/523x/config.c
@@ -22,7 +22,7 @@
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m523x_qspi_init(void)
 {
@@ -36,7 +36,7 @@ static void __init m523x_qspi_init(void)
 	writew(par, MCFGPIO_PAR_TIMER);
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -58,7 +58,7 @@ void __init config_BSP(char *commandp, int size)
 {
 	mach_sched_init = hw_timer_init;
 	m523x_fec_init();
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m523x_qspi_init();
 #endif
 }
diff --git a/arch/m68k/platform/5249/config.c b/arch/m68k/platform/5249/config.c
index bbf05135bb9..300e729a58d 100644
--- a/arch/m68k/platform/5249/config.c
+++ b/arch/m68k/platform/5249/config.c
@@ -51,7 +51,7 @@ static struct platform_device *m5249_devices[] __initdata = {
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m5249_qspi_init(void)
 {
@@ -61,7 +61,7 @@ static void __init m5249_qspi_init(void)
 	mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI);
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -90,7 +90,7 @@ void __init config_BSP(char *commandp, int size)
 #ifdef CONFIG_M5249C3
 	m5249_smc91x_init();
 #endif
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m5249_qspi_init();
 #endif
 }
diff --git a/arch/m68k/platform/527x/config.c b/arch/m68k/platform/527x/config.c
index f91a53294c3..b3cb378c5e9 100644
--- a/arch/m68k/platform/527x/config.c
+++ b/arch/m68k/platform/527x/config.c
@@ -23,7 +23,7 @@
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m527x_qspi_init(void)
 {
@@ -42,7 +42,7 @@ static void __init m527x_qspi_init(void)
 #endif
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -90,7 +90,7 @@ void __init config_BSP(char *commandp, int size)
 	mach_sched_init = hw_timer_init;
 	m527x_uarts_init();
 	m527x_fec_init();
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m527x_qspi_init();
 #endif
 }
diff --git a/arch/m68k/platform/528x/config.c b/arch/m68k/platform/528x/config.c
index d4492926614..c5f11ba49be 100644
--- a/arch/m68k/platform/528x/config.c
+++ b/arch/m68k/platform/528x/config.c
@@ -24,7 +24,7 @@
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m528x_qspi_init(void)
 {
@@ -32,7 +32,7 @@ static void __init m528x_qspi_init(void)
 	__raw_writeb(0x07, MCFGPIO_PQSPAR);
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -98,7 +98,7 @@ void __init config_BSP(char *commandp, int size)
 	mach_sched_init = hw_timer_init;
 	m528x_uarts_init();
 	m528x_fec_init();
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m528x_qspi_init();
 #endif
 }
diff --git a/arch/m68k/platform/532x/config.c b/arch/m68k/platform/532x/config.c
index 2bec3477b73..37082d02f2b 100644
--- a/arch/m68k/platform/532x/config.c
+++ b/arch/m68k/platform/532x/config.c
@@ -30,7 +30,7 @@
 
 /***************************************************************************/
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 
 static void __init m532x_qspi_init(void)
 {
@@ -38,7 +38,7 @@ static void __init m532x_qspi_init(void)
 	writew(0x01f0, MCF_GPIO_PAR_QSPI);
 }
 
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 /***************************************************************************/
 
@@ -77,7 +77,7 @@ void __init config_BSP(char *commandp, int size)
 	mach_sched_init = hw_timer_init;
 	m532x_uarts_init();
 	m532x_fec_init();
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	m532x_qspi_init();
 #endif
 
diff --git a/arch/m68k/platform/coldfire/device.c b/arch/m68k/platform/coldfire/device.c
index 7af97362b95..3aa77ddea89 100644
--- a/arch/m68k/platform/coldfire/device.c
+++ b/arch/m68k/platform/coldfire/device.c
@@ -121,7 +121,7 @@ static struct platform_device mcf_fec1 = {
 #endif /* MCFFEC_BASE1 */
 #endif /* CONFIG_FEC */
 
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 /*
  *	The ColdFire QSPI module is an SPI protocol hardware block used
  *	on a number of different ColdFire CPUs.
@@ -274,7 +274,7 @@ static struct platform_device mcf_qspi = {
 	.resource		= mcf_qspi_resources,
 	.dev.platform_data	= &mcf_qspi_data,
 };
-#endif /* CONFIG_SPI_COLDFIRE_QSPI */
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
 
 static struct platform_device *mcf_devices[] __initdata = {
 	&mcf_uart,
@@ -284,7 +284,7 @@ static struct platform_device *mcf_devices[] __initdata = {
 	&mcf_fec1,
 #endif
 #endif
-#ifdef CONFIG_SPI_COLDFIRE_QSPI
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
 	&mcf_qspi,
 #endif
 };
diff --git a/arch/parisc/include/asm/hardware.h b/arch/parisc/include/asm/hardware.h
index 4e9626836ba..d1d864b81ba 100644
--- a/arch/parisc/include/asm/hardware.h
+++ b/arch/parisc/include/asm/hardware.h
@@ -2,7 +2,6 @@
 #define _PARISC_HARDWARE_H
 
 #include <linux/mod_devicetable.h>
-#include <asm/pdc.h>
 
 #define HWTYPE_ANY_ID		PA_HWTYPE_ANY_ID
 #define HVERSION_ANY_ID		PA_HVERSION_ANY_ID
@@ -95,12 +94,14 @@ struct bc_module {
 #define HPHW_MC	       15
 #define HPHW_FAULTY    31
 
+struct parisc_device_id;
 
 /* hardware.c: */
 extern const char *parisc_hardware_description(struct parisc_device_id *id);
 extern enum cpu_type parisc_get_cpu_type(unsigned long hversion);
 
 struct pci_dev;
+struct hardware_path;
 
 /* drivers.c: */
 extern struct parisc_device *alloc_pa_dev(unsigned long hpa,
diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index a84cc1f925f..4e0e7dbf0f3 100644
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -160,5 +160,11 @@ extern int npmem_ranges;
 
 #include <asm-generic/memory_model.h>
 #include <asm-generic/getorder.h>
+#include <asm/pdc.h>
+
+#define PAGE0   ((struct zeropage *)__PAGE_OFFSET)
+
+/* DEFINITION OF THE ZERO-PAGE (PAG0) */
+/* based on work by Jason Eckhardt (jason@equator.com) */
 
 #endif /* _PARISC_PAGE_H */
diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h
index 4ca510b3c6f..7f0f2d23059 100644
--- a/arch/parisc/include/asm/pdc.h
+++ b/arch/parisc/include/asm/pdc.h
@@ -343,8 +343,6 @@
 
 #ifdef __KERNEL__
 
-#include <asm/page.h> /* for __PAGE_OFFSET */
-
 extern int pdc_type;
 
 /* Values for pdc_type */
@@ -677,11 +675,6 @@ static inline char * os_id_to_string(u16 os_id) {
 
 #endif /* __KERNEL__ */
 
-#define PAGE0   ((struct zeropage *)__PAGE_OFFSET)
-
-/* DEFINITION OF THE ZERO-PAGE (PAG0) */
-/* based on work by Jason Eckhardt (jason@equator.com) */
-
 /* flags of the device_path */
 #define	PF_AUTOBOOT	0x80
 #define	PF_AUTOSEARCH	0x40
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 22dadeb5869..ee99f233935 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -44,6 +44,8 @@ struct vm_area_struct;
 
 #endif /* !__ASSEMBLY__ */
 
+#include <asm/page.h>
+
 #define pte_ERROR(e) \
 	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
 #define pmd_ERROR(e) \
diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h
index 804aa28ab1d..3516e0b2704 100644
--- a/arch/parisc/include/asm/spinlock.h
+++ b/arch/parisc/include/asm/spinlock.h
@@ -1,6 +1,8 @@
 #ifndef __ASM_SPINLOCK_H
 #define __ASM_SPINLOCK_H
 
+#include <asm/barrier.h>
+#include <asm/ldcw.h>
 #include <asm/processor.h>
 #include <asm/spinlock_types.h>
 
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index 0b3393381a8..47341aa208f 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -50,6 +50,7 @@
 #include <linux/init.h>
 #include <linux/major.h>
 #include <linux/tty.h>
+#include <asm/page.h>		/* for PAGE0 */
 #include <asm/pdc.h>		/* for iodc_call() proto and friends */
 
 static DEFINE_SPINLOCK(pdc_console_lock);
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 7c0774397b8..70e105d6242 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -29,6 +29,7 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <asm/page.h>
 #include <asm/param.h>
 #include <asm/pdc.h>
 #include <asm/led.h>
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 548da3aa0a3..d58fc4e4149 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -288,13 +288,6 @@ label##_hv:								\
 /* Exception addition: Hard disable interrupts */
 #define DISABLE_INTS	SOFT_DISABLE_INTS(r10,r11)
 
-/* Exception addition: Keep interrupt state */
-#define ENABLE_INTS				\
-	ld	r11,PACAKMSR(r13);		\
-	ld	r12,_MSR(r1);			\
-	rlwimi	r11,r12,0,MSR_EE;		\
-	mtmsrd	r11,1
-
 #define ADD_NVGPRS				\
 	bl	.save_nvgprs
 
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index f8a7a1a1a9f..ef2074c3e90 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -588,23 +588,19 @@ _GLOBAL(ret_from_except_lite)
 fast_exc_return_irq:
 restore:
 	/*
-	 * This is the main kernel exit path, we first check if we
-	 * have to change our interrupt state.
+	 * This is the main kernel exit path. First we check if we
+	 * are about to re-enable interrupts
 	 */
 	ld	r5,SOFTE(r1)
 	lbz	r6,PACASOFTIRQEN(r13)
-	cmpwi	cr1,r5,0
-	cmpw	cr0,r5,r6
-	beq	cr0,4f
+	cmpwi	cr0,r5,0
+	beq	restore_irq_off
 
-	/* We do, handle disable first, which is easy */
-	bne	cr1,3f;
- 	li	r0,0
-	stb	r0,PACASOFTIRQEN(r13);
-	TRACE_DISABLE_INTS
-	b	4f
+	/* We are enabling, were we already enabled ? Yes, just return */
+	cmpwi	cr0,r6,1
+	beq	cr0,do_restore
 
-3:	/*
+	/*
 	 * We are about to soft-enable interrupts (we are hard disabled
 	 * at this point). We check if there's anything that needs to
 	 * be replayed first.
@@ -626,7 +622,7 @@ restore_no_replay:
 	/*
 	 * Final return path. BookE is handled in a different file
 	 */
-4:
+do_restore:
 #ifdef CONFIG_PPC_BOOK3E
 	b	.exception_return_book3e
 #else
@@ -700,6 +696,25 @@ fast_exception_return:
 #endif /* CONFIG_PPC_BOOK3E */
 
 	/*
+	 * We are returning to a context with interrupts soft disabled.
+	 *
+	 * However, we may also about to hard enable, so we need to
+	 * make sure that in this case, we also clear PACA_IRQ_HARD_DIS
+	 * or that bit can get out of sync and bad things will happen
+	 */
+restore_irq_off:
+	ld	r3,_MSR(r1)
+	lbz	r7,PACAIRQHAPPENED(r13)
+	andi.	r0,r3,MSR_EE
+	beq	1f
+	rlwinm	r7,r7,0,~PACA_IRQ_HARD_DIS
+	stb	r7,PACAIRQHAPPENED(r13)
+1:	li	r0,0
+	stb	r0,PACASOFTIRQEN(r13);
+	TRACE_DISABLE_INTS
+	b	do_restore
+
+	/*
 	 * Something did happen, check if a re-emit is needed
 	 * (this also clears paca->irq_happened)
 	 */
@@ -748,6 +763,9 @@ restore_check_irq_replay:
 #endif /* CONFIG_PPC_BOOK3E */
 1:	b	.ret_from_except /* What else to do here ? */
  
+
+
+3:
 do_work:
 #ifdef CONFIG_PREEMPT
 	andi.	r0,r3,MSR_PR	/* Returning to user mode? */
@@ -767,16 +785,6 @@ do_work:
 	SOFT_DISABLE_INTS(r3,r4)
 1:	bl	.preempt_schedule_irq
 
-	/* Hard-disable interrupts again (and update PACA) */
-#ifdef CONFIG_PPC_BOOK3E
-	wrteei	0
-#else
-	ld	r10,PACAKMSR(r13) /* Get kernel MSR without EE */
-	mtmsrd	r10,1
-#endif /* CONFIG_PPC_BOOK3E */
-	li	r0,PACA_IRQ_HARD_DIS
-	stb	r0,PACAIRQHAPPENED(r13)
-
 	/* Re-test flags and eventually loop */
 	clrrdi	r9,r1,THREAD_SHIFT
 	ld	r4,TI_FLAGS(r9)
@@ -787,14 +795,6 @@ do_work:
 user_work:
 #endif /* CONFIG_PREEMPT */
 
-	/* Enable interrupts */
-#ifdef CONFIG_PPC_BOOK3E
-	wrteei	1
-#else
-	ori	r10,r10,MSR_EE
-	mtmsrd	r10,1
-#endif /* CONFIG_PPC_BOOK3E */
-
 	andi.	r0,r4,_TIF_NEED_RESCHED
 	beq	1f
 	bl	.restore_interrupts
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index cb705fdbb45..8f880bc77c5 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -768,8 +768,8 @@ alignment_common:
 	std	r3,_DAR(r1)
 	std	r4,_DSISR(r1)
 	bl	.save_nvgprs
+	DISABLE_INTS
 	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
 	bl	.alignment_exception
 	b	.ret_from_except
 
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 43eb74fcedd..641da9e868c 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -229,6 +229,19 @@ notrace void arch_local_irq_restore(unsigned long en)
 	 */
 	if (unlikely(irq_happened != PACA_IRQ_HARD_DIS))
 		__hard_irq_disable();
+#ifdef CONFIG_TRACE_IRQFLAG
+	else {
+		/*
+		 * We should already be hard disabled here. We had bugs
+		 * where that wasn't the case so let's dbl check it and
+		 * warn if we are wrong. Only do that when IRQ tracing
+		 * is enabled as mfmsr() can be costly.
+		 */
+		if (WARN_ON(mfmsr() & MSR_EE))
+			__hard_irq_disable();
+	}
+#endif /* CONFIG_TRACE_IRQFLAG */
+
 	set_soft_enabled(0);
 
 	/*
@@ -260,11 +273,17 @@ EXPORT_SYMBOL(arch_local_irq_restore);
  * if they are currently disabled. This is typically called before
  * schedule() or do_signal() when returning to userspace. We do it
  * in C to avoid the burden of dealing with lockdep etc...
+ *
+ * NOTE: This is called with interrupts hard disabled but not marked
+ * as such in paca->irq_happened, so we need to resync this.
  */
 void restore_interrupts(void)
 {
-	if (irqs_disabled())
+	if (irqs_disabled()) {
+		local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
 		local_irq_enable();
+	} else
+		__hard_irq_enable();
 }
 
 #endif /* CONFIG_PPC64 */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6aa0c663e24..158972341a2 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -248,7 +248,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 				   addr, regs->nip, regs->link, code);
 	}
 
-	if (!arch_irq_disabled_regs(regs))
+	if (arch_irqs_disabled() && !arch_irq_disabled_regs(regs))
 		local_irq_enable();
 
 	memset(&info, 0, sizeof(info));
@@ -1019,7 +1019,9 @@ void __kprobes program_check_exception(struct pt_regs *regs)
 		return;
 	}
 
-	local_irq_enable();
+	/* We restore the interrupt state now */
+	if (!arch_irq_disabled_regs(regs))
+		local_irq_enable();
 
 #ifdef CONFIG_MATH_EMULATION
 	/* (reason & REASON_ILLEGAL) would be the obvious thing here,
@@ -1069,6 +1071,10 @@ void alignment_exception(struct pt_regs *regs)
 {
 	int sig, code, fixed = 0;
 
+	/* We restore the interrupt state now */
+	if (!arch_irq_disabled_regs(regs))
+		local_irq_enable();
+
 	/* we don't implement logging of alignment exceptions */
 	if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS))
 		fixed = fix_alignment(regs);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index ddc485a529f..c3beaeef3f6 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -258,6 +258,8 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn,
 			    !(memslot->userspace_addr & (s - 1))) {
 				start &= ~(s - 1);
 				pgsize = s;
+				get_page(hpage);
+				put_page(page);
 				page = hpage;
 			}
 		}
@@ -281,11 +283,8 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn,
 	err = 0;
 
  out:
-	if (got) {
-		if (PageHuge(page))
-			page = compound_head(page);
+	if (got)
 		put_page(page);
-	}
 	return err;
 
  up_err:
@@ -678,8 +677,15 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
 		SetPageDirty(page);
 
  out_put:
-	if (page)
-		put_page(page);
+	if (page) {
+		/*
+		 * We drop pages[0] here, not page because page might
+		 * have been set to the head page of a compound, but
+		 * we have to drop the reference on the correct tail
+		 * page to match the get inside gup()
+		 */
+		put_page(pages[0]);
+	}
 	return ret;
 
  out_unlock:
@@ -979,6 +985,7 @@ void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long gpa,
 			pa = *physp;
 		}
 		page = pfn_to_page(pa >> PAGE_SHIFT);
+		get_page(page);
 	} else {
 		hva = gfn_to_hva_memslot(memslot, gfn);
 		npages = get_user_pages_fast(hva, 1, 1, pages);
@@ -991,8 +998,6 @@ void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long gpa,
 		page = compound_head(page);
 		psize <<= compound_order(page);
 	}
-	if (!kvm->arch.using_mmu_notifiers)
-		get_page(page);
 	offset = gpa & (psize - 1);
 	if (nb_ret)
 		*nb_ret = psize - offset;
@@ -1003,7 +1008,6 @@ void kvmppc_unpin_guest_page(struct kvm *kvm, void *va)
 {
 	struct page *page = virt_to_page(va);
 
-	page = compound_head(page);
 	put_page(page);
 }
 
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 01294a5099d..108d1f58017 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1192,8 +1192,6 @@ static void unpin_slot(struct kvm *kvm, int slot_id)
 				continue;
 			pfn = physp[j] >> PAGE_SHIFT;
 			page = pfn_to_page(pfn);
-			if (PageHuge(page))
-				page = compound_head(page);
 			SetPageDirty(page);
 			put_page(page);
 		}
diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c
index 38d48a59879..9708851a8b9 100644
--- a/arch/sparc/kernel/central.c
+++ b/arch/sparc/kernel/central.c
@@ -269,4 +269,4 @@ static int __init sunfire_init(void)
 	return 0;
 }
 
-subsys_initcall(sunfire_init);
+fs_initcall(sunfire_init);
diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S
index b57a5942ba6..874162a11ce 100644
--- a/arch/sparc/mm/ultra.S
+++ b/arch/sparc/mm/ultra.S
@@ -495,11 +495,11 @@ xcall_fetch_glob_regs:
 	stx		%o7, [%g1 + GR_SNAP_O7]
 	stx		%i7, [%g1 + GR_SNAP_I7]
 	/* Don't try this at home kids... */
-	rdpr		%cwp, %g2
-	sub		%g2, 1, %g7
+	rdpr		%cwp, %g3
+	sub		%g3, 1, %g7
 	wrpr		%g7, %cwp
 	mov		%i7, %g7
-	wrpr		%g2, %cwp
+	wrpr		%g3, %cwp
 	stx		%g7, [%g1 + GR_SNAP_RPC]
 	sethi		%hi(trap_block), %g7
 	or		%g7, %lo(trap_block), %g7
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index b8ba6e4a27e..e554e5ad2fe 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -79,7 +79,6 @@ struct kvm_task_sleep_node {
 	u32 token;
 	int cpu;
 	bool halted;
-	struct mm_struct *mm;
 };
 
 static struct kvm_task_sleep_head {
@@ -126,9 +125,7 @@ void kvm_async_pf_task_wait(u32 token)
 
 	n.token = token;
 	n.cpu = smp_processor_id();
-	n.mm = current->active_mm;
 	n.halted = idle || preempt_count() > 1;
-	atomic_inc(&n.mm->mm_count);
 	init_waitqueue_head(&n.wq);
 	hlist_add_head(&n.link, &b->list);
 	spin_unlock(&b->lock);
@@ -161,9 +158,6 @@ EXPORT_SYMBOL_GPL(kvm_async_pf_task_wait);
 static void apf_task_wake_one(struct kvm_task_sleep_node *n)
 {
 	hlist_del_init(&n->link);
-	if (!n->mm)
-		return;
-	mmdrop(n->mm);
 	if (n->halted)
 		smp_send_reschedule(n->cpu);
 	else if (waitqueue_active(&n->wq))
@@ -207,7 +201,7 @@ again:
 		 * async PF was not yet handled.
 		 * Add dummy entry for the token.
 		 */
-		n = kmalloc(sizeof(*n), GFP_ATOMIC);
+		n = kzalloc(sizeof(*n), GFP_ATOMIC);
 		if (!n) {
 			/*
 			 * Allocation failed! Busy wait while other cpu
@@ -219,7 +213,6 @@ again:
 		}
 		n->token = token;
 		n->cpu = smp_processor_id();
-		n->mm = NULL;
 		init_waitqueue_head(&n->wq);
 		hlist_add_head(&n->link, &b->list);
 	} else
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 733ca39f367..43d8b48b23e 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -423,6 +423,7 @@ void set_personality_ia32(bool x32)
 		current_thread_info()->status |= TS_COMPAT;
 	}
 }
+EXPORT_SYMBOL_GPL(set_personality_ia32);
 
 unsigned long get_wchan(struct task_struct *p)
 {
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 71f4727da37..5a98aa27218 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -185,10 +185,22 @@ void __init setup_per_cpu_areas(void)
 #endif
 	rc = -EINVAL;
 	if (pcpu_chosen_fc != PCPU_FC_PAGE) {
-		const size_t atom_size = cpu_has_pse ? PMD_SIZE : PAGE_SIZE;
 		const size_t dyn_size = PERCPU_MODULE_RESERVE +
 			PERCPU_DYNAMIC_RESERVE - PERCPU_FIRST_CHUNK_RESERVE;
+		size_t atom_size;
 
+		/*
+		 * On 64bit, use PMD_SIZE for atom_size so that embedded
+		 * percpu areas are aligned to PMD.  This, in the future,
+		 * can also allow using PMD mappings in vmalloc area.  Use
+		 * PAGE_SIZE on 32bit as vmalloc space is highly contended
+		 * and large vmalloc area allocs can easily fail.
+		 */
+#ifdef CONFIG_X86_64
+		atom_size = PMD_SIZE;
+#else
+		atom_size = PAGE_SIZE;
+#endif
 		rc = pcpu_embed_first_chunk(PERCPU_FIRST_CHUNK_RESERVE,
 					    dyn_size, atom_size,
 					    pcpu_cpu_distance,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 91a5e989abc..185a2b823a2 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6581,6 +6581,7 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 		kvm_inject_page_fault(vcpu, &fault);
 	}
 	vcpu->arch.apf.halted = false;
+	vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
 }
 
 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index a8f8844b8d3..95dccce8e97 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -63,6 +63,7 @@
 #include <asm/stackprotector.h>
 #include <asm/hypervisor.h>
 #include <asm/mwait.h>
+#include <asm/pci_x86.h>
 
 #ifdef CONFIG_ACPI
 #include <linux/acpi.h>
@@ -809,9 +810,40 @@ static void xen_io_delay(void)
 }
 
 #ifdef CONFIG_X86_LOCAL_APIC
+static unsigned long xen_set_apic_id(unsigned int x)
+{
+	WARN_ON(1);
+	return x;
+}
+static unsigned int xen_get_apic_id(unsigned long x)
+{
+	return ((x)>>24) & 0xFFu;
+}
 static u32 xen_apic_read(u32 reg)
 {
-	return 0;
+	struct xen_platform_op op = {
+		.cmd = XENPF_get_cpuinfo,
+		.interface_version = XENPF_INTERFACE_VERSION,
+		.u.pcpu_info.xen_cpuid = 0,
+	};
+	int ret = 0;
+
+	/* Shouldn't need this as APIC is turned off for PV, and we only
+	 * get called on the bootup processor. But just in case. */
+	if (!xen_initial_domain() || smp_processor_id())
+		return 0;
+
+	if (reg == APIC_LVR)
+		return 0x10;
+
+	if (reg != APIC_ID)
+		return 0;
+
+	ret = HYPERVISOR_dom0_op(&op);
+	if (ret)
+		return 0;
+
+	return op.u.pcpu_info.apic_id << 24;
 }
 
 static void xen_apic_write(u32 reg, u32 val)
@@ -849,6 +881,8 @@ static void set_xen_basic_apic_ops(void)
 	apic->icr_write = xen_apic_icr_write;
 	apic->wait_icr_idle = xen_apic_wait_icr_idle;
 	apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle;
+	apic->set_apic_id = xen_set_apic_id;
+	apic->get_apic_id = xen_get_apic_id;
 }
 
 #endif
@@ -1365,8 +1399,10 @@ asmlinkage void __init xen_start_kernel(void)
 		/* Make sure ACS will be enabled */
 		pci_request_acs();
 	}
-		
-
+#ifdef CONFIG_PCI
+	/* PCI BIOS service won't work from a PV guest. */
+	pci_probe &= ~PCI_PROBE_BIOS;
+#endif
 	xen_raw_console_write("about to get started...\n");
 
 	xen_setup_runstate_info(0);
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index b8e279479a6..69f5857660a 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -353,8 +353,13 @@ static pteval_t pte_mfn_to_pfn(pteval_t val)
 {
 	if (val & _PAGE_PRESENT) {
 		unsigned long mfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
+		unsigned long pfn = mfn_to_pfn(mfn);
+
 		pteval_t flags = val & PTE_FLAGS_MASK;
-		val = ((pteval_t)mfn_to_pfn(mfn) << PAGE_SHIFT) | flags;
+		if (unlikely(pfn == ~0))
+			val = flags & ~_PAGE_PRESENT;
+		else
+			val = ((pteval_t)pfn << PAGE_SHIFT) | flags;
 	}
 
 	return val;