Merge remote-tracking branch 'origin/master' into next

(Merge in order to get the PCIe mps/mrss code fixes)

62 files changed, 368 insertions, 152 deletions

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 60cde53d266..8bb936226de 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -51,7 +51,7 @@ config GENERIC_CMOS_UPDATE
         def_bool y
 
 config GENERIC_GPIO
-	def_bool y
+	bool
 
 config ZONE_DMA
 	bool
diff --git a/arch/arm/include/asm/hardware/cache-l2x0.h b/arch/arm/include/asm/hardware/cache-l2x0.h
index bfa706ffd96..99a6ed7e1bf 100644
--- a/arch/arm/include/asm/hardware/cache-l2x0.h
+++ b/arch/arm/include/asm/hardware/cache-l2x0.h
@@ -45,8 +45,13 @@
 #define L2X0_CLEAN_INV_LINE_PA		0x7F0
 #define L2X0_CLEAN_INV_LINE_IDX		0x7F8
 #define L2X0_CLEAN_INV_WAY		0x7FC
-#define L2X0_LOCKDOWN_WAY_D		0x900
-#define L2X0_LOCKDOWN_WAY_I		0x904
+/*
+ * The lockdown registers repeat 8 times for L310, the L210 has only one
+ * D and one I lockdown register at 0x0900 and 0x0904.
+ */
+#define L2X0_LOCKDOWN_WAY_D_BASE	0x900
+#define L2X0_LOCKDOWN_WAY_I_BASE	0x904
+#define L2X0_LOCKDOWN_STRIDE		0x08
 #define L2X0_TEST_OPERATION		0xF00
 #define L2X0_LINE_DATA			0xF10
 #define L2X0_LINE_TAG			0xF30
diff --git a/arch/arm/mach-cns3xxx/include/mach/entry-macro.S b/arch/arm/mach-cns3xxx/include/mach/entry-macro.S
index 6bd83ed90af..d87bfc397d3 100644
--- a/arch/arm/mach-cns3xxx/include/mach/entry-macro.S
+++ b/arch/arm/mach-cns3xxx/include/mach/entry-macro.S
@@ -8,7 +8,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <mach/hardware.h>
 #include <asm/hardware/entry-macro-gic.S>
 
 		.macro	disable_fiq
diff --git a/arch/arm/mach-cns3xxx/include/mach/system.h b/arch/arm/mach-cns3xxx/include/mach/system.h
index 58bb03ae3cf..4f16c9b79f7 100644
--- a/arch/arm/mach-cns3xxx/include/mach/system.h
+++ b/arch/arm/mach-cns3xxx/include/mach/system.h
@@ -13,7 +13,6 @@
 
 #include <linux/io.h>
 #include <asm/proc-fns.h>
-#include <mach/hardware.h>
 
 static inline void arch_idle(void)
 {
diff --git a/arch/arm/mach-cns3xxx/include/mach/uncompress.h b/arch/arm/mach-cns3xxx/include/mach/uncompress.h
index de8ead9b91f..a91b6058ab4 100644
--- a/arch/arm/mach-cns3xxx/include/mach/uncompress.h
+++ b/arch/arm/mach-cns3xxx/include/mach/uncompress.h
@@ -8,7 +8,6 @@
  */
 
 #include <asm/mach-types.h>
-#include <mach/hardware.h>
 #include <mach/cns3xxx.h>
 
 #define AMBA_UART_DR(base)	(*(volatile unsigned char *)((base) + 0x00))
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c
index 06fd25d70ae..0f8fca48a5e 100644
--- a/arch/arm/mach-cns3xxx/pcie.c
+++ b/arch/arm/mach-cns3xxx/pcie.c
@@ -49,7 +49,7 @@ static struct cns3xxx_pcie *sysdata_to_cnspci(void *sysdata)
 	return &cns3xxx_pcie[root->domain];
 }
 
-static struct cns3xxx_pcie *pdev_to_cnspci(struct pci_dev *dev)
+static struct cns3xxx_pcie *pdev_to_cnspci(const struct pci_dev *dev)
 {
 	return sysdata_to_cnspci(dev->sysdata);
 }
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index bd5394537c8..008d51407cd 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -115,6 +115,32 @@ static struct spi_board_info da850evm_spi_info[] = {
 	},
 };
 
+#ifdef CONFIG_MTD
+static void da850_evm_m25p80_notify_add(struct mtd_info *mtd)
+{
+	char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
+	size_t retlen;
+
+	if (!strcmp(mtd->name, "MAC-Address")) {
+		mtd->read(mtd, 0, ETH_ALEN, &retlen, mac_addr);
+		if (retlen == ETH_ALEN)
+			pr_info("Read MAC addr from SPI Flash: %pM\n",
+				mac_addr);
+	}
+}
+
+static struct mtd_notifier da850evm_spi_notifier = {
+	.add	= da850_evm_m25p80_notify_add,
+};
+
+static void da850_evm_setup_mac_addr(void)
+{
+	register_mtd_user(&da850evm_spi_notifier);
+}
+#else
+static void da850_evm_setup_mac_addr(void) { }
+#endif
+
 static struct mtd_partition da850_evm_norflash_partition[] = {
 	{
 		.name           = "bootloaders + env",
@@ -1244,6 +1270,8 @@ static __init void da850_evm_init(void)
 	if (ret)
 		pr_warning("da850_evm_init: sata registration failed: %d\n",
 				ret);
+
+	da850_evm_setup_mac_addr();
 }
 
 #ifdef CONFIG_SERIAL_8250_CONSOLE
diff --git a/arch/arm/mach-davinci/include/mach/psc.h b/arch/arm/mach-davinci/include/mach/psc.h
index 47fd0bc3d3e..fa59c097223 100644
--- a/arch/arm/mach-davinci/include/mach/psc.h
+++ b/arch/arm/mach-davinci/include/mach/psc.h
@@ -243,7 +243,7 @@
 #define PSC_STATE_DISABLE	2
 #define PSC_STATE_ENABLE	3
 
-#define MDSTAT_STATE_MASK	0x1f
+#define MDSTAT_STATE_MASK	0x3f
 #define MDCTL_FORCE		BIT(31)
 
 #ifndef __ASSEMBLER__
diff --git a/arch/arm/mach-davinci/sleep.S b/arch/arm/mach-davinci/sleep.S
index fb5e72b532b..5f1e045a3ad 100644
--- a/arch/arm/mach-davinci/sleep.S
+++ b/arch/arm/mach-davinci/sleep.S
@@ -217,7 +217,11 @@ ddr2clk_stop_done:
 ENDPROC(davinci_ddr_psc_config)
 
 CACHE_FLUSH:
-	.word	arm926_flush_kern_cache_all
+#ifdef CONFIG_CPU_V6
+	.word	v6_flush_kern_cache_all
+#else
+	.word   arm926_flush_kern_cache_all
+#endif
 
 ENTRY(davinci_cpu_suspend_sz)
 	.word	. - davinci_cpu_suspend
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index 2fbbdd5eac3..fcf0ae95651 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -337,15 +337,15 @@ static unsigned long timer_reload;
 static void integrator_clocksource_init(u32 khz)
 {
 	void __iomem *base = (void __iomem *)TIMER2_VA_BASE;
-	u32 ctrl = TIMER_CTRL_ENABLE;
+	u32 ctrl = TIMER_CTRL_ENABLE | TIMER_CTRL_PERIODIC;
 
 	if (khz >= 1500) {
 		khz /= 16;
-		ctrl = TIMER_CTRL_DIV16;
+		ctrl |= TIMER_CTRL_DIV16;
 	}
 
-	writel(ctrl, base + TIMER_CTRL);
 	writel(0xffff, base + TIMER_LOAD);
+	writel(ctrl, base + TIMER_CTRL);
 
 	clocksource_mmio_init(base + TIMER_VALUE, "timer2",
 		khz * 1000, 200, 16, clocksource_mmio_readl_down);
diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c
index ffd55b1c439..b9b84468314 100644
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -3078,6 +3078,7 @@ static struct clk gpt12_fck = {
 	.name		= "gpt12_fck",
 	.ops		= &clkops_null,
 	.parent		= &secure_32k_fck,
+	.clkdm_name	= "wkup_clkdm",
 	.recalc		= &followparent_recalc,
 };
 
@@ -3085,6 +3086,7 @@ static struct clk wdt1_fck = {
 	.name		= "wdt1_fck",
 	.ops		= &clkops_null,
 	.parent		= &secure_32k_fck,
+	.clkdm_name	= "wkup_clkdm",
 	.recalc		= &followparent_recalc,
 };
 
diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c
index 2af0e3f00ce..c0b6fbda340 100644
--- a/arch/arm/mach-omap2/clock44xx_data.c
+++ b/arch/arm/mach-omap2/clock44xx_data.c
@@ -3376,10 +3376,18 @@ int __init omap4xxx_clk_init(void)
 	} else if (cpu_is_omap446x()) {
 		cpu_mask = RATE_IN_4460;
 		cpu_clkflg = CK_446X;
+	} else {
+		return 0;
 	}
 
 	clk_init(&omap2_clk_functions);
-	omap2_clk_disable_clkdm_control();
+
+	/*
+	 * Must stay commented until all OMAP SoC drivers are
+	 * converted to runtime PM, or drivers may start crashing
+	 *
+	 * omap2_clk_disable_clkdm_control();
+	 */
 
 	for (c = omap44xx_clks; c < omap44xx_clks + ARRAY_SIZE(omap44xx_clks);
 									  c++)
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index ab7db083f97..8f0890685d7 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -747,6 +747,7 @@ int clkdm_wakeup(struct clockdomain *clkdm)
 	spin_lock_irqsave(&clkdm->lock, flags);
 	clkdm->_flags &= ~_CLKDM_FLAG_HWSUP_ENABLED;
 	ret = arch_clkdm->clkdm_wakeup(clkdm);
+	ret |= pwrdm_state_switch(clkdm->pwrdm.ptr);
 	spin_unlock_irqrestore(&clkdm->lock, flags);
 	return ret;
 }
@@ -818,6 +819,7 @@ void clkdm_deny_idle(struct clockdomain *clkdm)
 	spin_lock_irqsave(&clkdm->lock, flags);
 	clkdm->_flags &= ~_CLKDM_FLAG_HWSUP_ENABLED;
 	arch_clkdm->clkdm_deny_idle(clkdm);
+	pwrdm_state_switch(clkdm->pwrdm.ptr);
 	spin_unlock_irqrestore(&clkdm->lock, flags);
 }
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
index 16743c7d6e8..408193d8e04 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
@@ -192,6 +192,7 @@ static struct omap_hwmod_addr_space omap2430_usbhsotg_addrs[] = {
 		.pa_end		= OMAP243X_HS_BASE + SZ_4K - 1,
 		.flags		= ADDR_TYPE_RT
 	},
+	{ }
 };
 
 /*  l4_core ->usbhsotg  interface */
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 3feb35911a3..472bf22d5e8 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -130,7 +130,6 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
 		} else {
 			hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]);
 			clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
-			pwrdm_wait_transition(pwrdm);
 			sleep_switch = FORCEWAKEUP_SWITCH;
 		}
 	}
@@ -156,7 +155,6 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
 		return ret;
 	}
 
-	pwrdm_wait_transition(pwrdm);
 	pwrdm_state_switch(pwrdm);
 err:
 	return ret;
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 9af08473bf1..ef71fdd40fc 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -195,28 +195,35 @@ static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused)
 
 /**
  * pwrdm_init - set up the powerdomain layer
- * @pwrdm_list: array of struct powerdomain pointers to register
+ * @pwrdms: array of struct powerdomain pointers to register
  * @custom_funcs: func pointers for arch specific implementations
  *
- * Loop through the array of powerdomains @pwrdm_list, registering all
- * that are available on the current CPU. If pwrdm_list is supplied
- * and not null, all of the referenced powerdomains will be
- * registered.  No return value.  XXX pwrdm_list is not really a
- * "list"; it is an array.  Rename appropriately.
+ * Loop through the array of powerdomains @pwrdms, registering all
+ * that are available on the current CPU.  Also, program all
+ * powerdomain target state as ON; this is to prevent domains from
+ * hitting low power states (if bootloader has target states set to
+ * something other than ON) and potentially even losing context while
+ * PM is not fully initialized.  The PM late init code can then program
+ * the desired target state for all the power domains.  No return
+ * value.
  */
-void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs)
+void pwrdm_init(struct powerdomain **pwrdms, struct pwrdm_ops *custom_funcs)
 {
 	struct powerdomain **p = NULL;
+	struct powerdomain *temp_p;
 
 	if (!custom_funcs)
 		WARN(1, "powerdomain: No custom pwrdm functions registered\n");
 	else
 		arch_pwrdm = custom_funcs;
 
-	if (pwrdm_list) {
-		for (p = pwrdm_list; *p; p++)
+	if (pwrdms) {
+		for (p = pwrdms; *p; p++)
 			_pwrdm_register(*p);
 	}
+
+	list_for_each_entry(temp_p, &pwrdm_list, node)
+		pwrdm_set_next_pwrst(temp_p, PWRDM_POWER_ON);
 }
 
 /**
diff --git a/arch/arm/mach-prima2/clock.c b/arch/arm/mach-prima2/clock.c
index f9a2aaf63f7..615a4e75cea 100644
--- a/arch/arm/mach-prima2/clock.c
+++ b/arch/arm/mach-prima2/clock.c
@@ -481,6 +481,7 @@ static void __init sirfsoc_clk_init(void)
 
 static struct of_device_id clkc_ids[] = {
 	{ .compatible = "sirf,prima2-clkc" },
+	{},
 };
 
 void __init sirfsoc_of_clk_init(void)
diff --git a/arch/arm/mach-prima2/irq.c b/arch/arm/mach-prima2/irq.c
index c3404cbb6ff..7af254d046b 100644
--- a/arch/arm/mach-prima2/irq.c
+++ b/arch/arm/mach-prima2/irq.c
@@ -51,6 +51,7 @@ static __init void sirfsoc_irq_init(void)
 
 static struct of_device_id intc_ids[]  = {
 	{ .compatible = "sirf,prima2-intc" },
+	{},
 };
 
 void __init sirfsoc_of_irq_init(void)
diff --git a/arch/arm/mach-prima2/rstc.c b/arch/arm/mach-prima2/rstc.c
index d074786e83d..492cfa8d261 100644
--- a/arch/arm/mach-prima2/rstc.c
+++ b/arch/arm/mach-prima2/rstc.c
@@ -19,6 +19,7 @@ static DEFINE_MUTEX(rstc_lock);
 
 static struct of_device_id rstc_ids[]  = {
 	{ .compatible = "sirf,prima2-rstc" },
+	{},
 };
 
 static int __init sirfsoc_of_rstc_init(void)
diff --git a/arch/arm/mach-prima2/timer.c b/arch/arm/mach-prima2/timer.c
index 44027f34a88..ed7ec48d11d 100644
--- a/arch/arm/mach-prima2/timer.c
+++ b/arch/arm/mach-prima2/timer.c
@@ -190,6 +190,7 @@ static void __init sirfsoc_timer_init(void)
 
 static struct of_device_id timer_ids[] = {
 	{ .compatible = "sirf,prima2-tick" },
+	{},
 };
 
 static void __init sirfsoc_of_timer_map(void)
diff --git a/arch/arm/mm/abort-macro.S b/arch/arm/mm/abort-macro.S
index 52162d59407..2cbf68ef0e8 100644
--- a/arch/arm/mm/abort-macro.S
+++ b/arch/arm/mm/abort-macro.S
@@ -17,7 +17,7 @@
 	cmp	\tmp, # 0x5600			@ Is it ldrsb?
 	orreq	\tmp, \tmp, #1 << 11		@ Set L-bit if yes
 	tst	\tmp, #1 << 11			@ L = 0 -> write
-	orreq	\psr, \psr, #1 << 11		@ yes.
+	orreq	\fsr, \fsr, #1 << 11		@ yes.
 	b	do_DataAbort
 not_thumb:
 	.endm
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 44c086710d2..9ecfdb51195 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -277,6 +277,25 @@ static void l2x0_disable(void)
 	spin_unlock_irqrestore(&l2x0_lock, flags);
 }
 
+static void __init l2x0_unlock(__u32 cache_id)
+{
+	int lockregs;
+	int i;
+
+	if (cache_id == L2X0_CACHE_ID_PART_L310)
+		lockregs = 8;
+	else
+		/* L210 and unknown types */
+		lockregs = 1;
+
+	for (i = 0; i < lockregs; i++) {
+		writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_D_BASE +
+			       i * L2X0_LOCKDOWN_STRIDE);
+		writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_I_BASE +
+			       i * L2X0_LOCKDOWN_STRIDE);
+	}
+}
+
 void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
 {
 	__u32 aux;
@@ -328,6 +347,8 @@ void __init l2x0_init(void __iomem *base, __u32 aux_val, __u32 aux_mask)
 	 * accessing the below registers will fault.
 	 */
 	if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & 1)) {
+		/* Make sure that I&D is not locked down when starting */
+		l2x0_unlock(cache_id);
 
 		/* l2x0 controller is disabled */
 		writel_relaxed(aux, l2x0_base + L2X0_AUX_CTRL);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 91bca355cd3..cc7e2d8be9a 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -298,7 +298,7 @@ static void __init arm_bootmem_free(unsigned long min, unsigned long max_low,
 #ifdef CONFIG_HAVE_ARCH_PFN_VALID
 int pfn_valid(unsigned long pfn)
 {
-	return memblock_is_memory(pfn << PAGE_SHIFT);
+	return memblock_is_memory(__pfn_to_phys(pfn));
 }
 EXPORT_SYMBOL(pfn_valid);
 #endif
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 9a6a5385491..02609eee056 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -615,6 +615,9 @@ static int _od_resume_noirq(struct device *dev)
 
 	return pm_generic_resume_noirq(dev);
 }
+#else
+#define _od_suspend_noirq NULL
+#define _od_resume_noirq NULL
 #endif
 
 static struct dev_pm_domain omap_device_pm_domain = {
diff --git a/arch/openrisc/include/asm/dma-mapping.h b/arch/openrisc/include/asm/dma-mapping.h
index 052f877b52a..60b47223390 100644
--- a/arch/openrisc/include/asm/dma-mapping.h
+++ b/arch/openrisc/include/asm/dma-mapping.h
@@ -31,7 +31,6 @@
 
 #define DMA_ERROR_CODE		(~(dma_addr_t)0x0)
 
-int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
 
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
@@ -47,6 +46,12 @@ dma_addr_t or1k_map_page(struct device *dev, struct page *page,
 void or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
 		     size_t size, enum dma_data_direction dir,
 		     struct dma_attrs *attrs);
+int or1k_map_sg(struct device *dev, struct scatterlist *sg,
+		int nents, enum dma_data_direction dir,
+		struct dma_attrs *attrs);
+void or1k_unmap_sg(struct device *dev, struct scatterlist *sg,
+		   int nents, enum dma_data_direction dir,
+		   struct dma_attrs *attrs);
 void or1k_sync_single_for_cpu(struct device *dev,
 			      dma_addr_t dma_handle, size_t size,
 			      enum dma_data_direction dir);
@@ -98,6 +103,51 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
 	debug_dma_unmap_page(dev, addr, size, dir, true);
 }
 
+static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
+				   int nents, enum dma_data_direction dir)
+{
+	int i, ents;
+	struct scatterlist *s;
+
+	for_each_sg(sg, s, nents, i)
+		kmemcheck_mark_initialized(sg_virt(s), s->length);
+	BUG_ON(!valid_dma_direction(dir));
+	ents = or1k_map_sg(dev, sg, nents, dir, NULL);
+	debug_dma_map_sg(dev, sg, nents, ents, dir);
+
+	return ents;
+}
+
+static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
+				      int nents, enum dma_data_direction dir)
+{
+	BUG_ON(!valid_dma_direction(dir));
+	debug_dma_unmap_sg(dev, sg, nents, dir);
+	or1k_unmap_sg(dev, sg, nents, dir, NULL);
+}
+
+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+				      size_t offset, size_t size,
+				      enum dma_data_direction dir)
+{
+	dma_addr_t addr;
+
+	kmemcheck_mark_initialized(page_address(page) + offset, size);
+	BUG_ON(!valid_dma_direction(dir));
+	addr = or1k_map_page(dev, page, offset, size, dir, NULL);
+	debug_dma_map_page(dev, page, offset, size, dir, addr, false);
+
+	return addr;
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
+				  size_t size, enum dma_data_direction dir)
+{
+	BUG_ON(!valid_dma_direction(dir));
+	or1k_unmap_page(dev, addr, size, dir, NULL);
+	debug_dma_unmap_page(dev, addr, size, dir, true);
+}
+
 static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
 					   size_t size,
 					   enum dma_data_direction dir)
@@ -119,7 +169,12 @@ static inline void dma_sync_single_for_device(struct device *dev,
 static inline int dma_supported(struct device *dev, u64 dma_mask)
 {
 	/* Support 32 bit DMA mask exclusively */
-	return dma_mask == 0xffffffffULL;
+	return dma_mask == DMA_BIT_MASK(32);
+}
+
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+	return 0;
 }
 
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)
diff --git a/arch/openrisc/include/asm/sigcontext.h b/arch/openrisc/include/asm/sigcontext.h
index 54a5c50132e..b79c2b19afb 100644
--- a/arch/openrisc/include/asm/sigcontext.h
+++ b/arch/openrisc/include/asm/sigcontext.h
@@ -23,16 +23,11 @@
 
 /* This struct is saved by setup_frame in signal.c, to keep the current
    context while a signal handler is executed. It's restored by sys_sigreturn.
-
-   To keep things simple, we use pt_regs here even though normally you just
-   specify the list of regs to save. Then we can use copy_from_user on the
-   entire regs instead of a bunch of get_user's as well...
 */
 
 struct sigcontext {
-	struct pt_regs regs;  /* needs to be first */
+	struct user_regs_struct regs;  /* needs to be first */
 	unsigned long oldmask;
-	unsigned long usp;    /* usp before stacking this gunk on it */
 };
 
 #endif /* __ASM_OPENRISC_SIGCONTEXT_H */
diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c
index 968d3ee477e..f1c8ee2895d 100644
--- a/arch/openrisc/kernel/dma.c
+++ b/arch/openrisc/kernel/dma.c
@@ -154,6 +154,33 @@ void or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
 	/* Nothing special to do here... */
 }
 
+int or1k_map_sg(struct device *dev, struct scatterlist *sg,
+		int nents, enum dma_data_direction dir,
+		struct dma_attrs *attrs)
+{
+	struct scatterlist *s;
+	int i;
+
+	for_each_sg(sg, s, nents, i) {
+		s->dma_address = or1k_map_page(dev, sg_page(s), s->offset,
+					       s->length, dir, NULL);
+	}
+
+	return nents;
+}
+
+void or1k_unmap_sg(struct device *dev, struct scatterlist *sg,
+		   int nents, enum dma_data_direction dir,
+		   struct dma_attrs *attrs)
+{
+	struct scatterlist *s;
+	int i;
+
+	for_each_sg(sg, s, nents, i) {
+		or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, NULL);
+	}
+}
+
 void or1k_sync_single_for_cpu(struct device *dev,
 			      dma_addr_t dma_handle, size_t size,
 			      enum dma_data_direction dir)
@@ -187,5 +214,4 @@ static int __init dma_init(void)
 
 	return 0;
 }
-
 fs_initcall(dma_init);
diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c
index 5f759c76834..95207ab0c99 100644
--- a/arch/openrisc/kernel/signal.c
+++ b/arch/openrisc/kernel/signal.c
@@ -52,31 +52,25 @@ struct rt_sigframe {
 static int restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc)
 {
 	unsigned int err = 0;
-	unsigned long old_usp;
 
 	/* Alwys make any pending restarted system call return -EINTR */
 	current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
-	/* restore the regs from &sc->regs (same as sc, since regs is first)
+	/*
+	 * Restore the regs from &sc->regs.
 	 * (sc is already checked for VERIFY_READ since the sigframe was
 	 *  checked in sys_sigreturn previously)
 	 */
-
-	if (__copy_from_user(regs, sc, sizeof(struct pt_regs)))
+	if (__copy_from_user(regs, sc->regs.gpr, 32 * sizeof(unsigned long)))
+		goto badframe;
+	if (__copy_from_user(&regs->pc, &sc->regs.pc, sizeof(unsigned long)))
+		goto badframe;
+	if (__copy_from_user(&regs->sr, &sc->regs.sr, sizeof(unsigned long)))
 		goto badframe;
 
 	/* make sure the SM-bit is cleared so user-mode cannot fool us */
 	regs->sr &= ~SPR_SR_SM;
 
-	/* restore the old USP as it was before we stacked the sc etc.
-	 * (we cannot just pop the sigcontext since we aligned the sp and
-	 *  stuff after pushing it)
-	 */
-
-	err |= __get_user(old_usp, &sc->usp);
-
-	regs->sp = old_usp;
-
 	/* TODO: the other ports use regs->orig_XX to disable syscall checks
 	 * after this completes, but we don't use that mechanism. maybe we can
 	 * use it now ?
@@ -137,18 +131,17 @@ static int setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
 			    unsigned long mask)
 {
 	int err = 0;
-	unsigned long usp = regs->sp;
 
-	/* copy the regs. they are first in sc so we can use sc directly */
+	/* copy the regs */
 
-	err |= __copy_to_user(sc, regs, sizeof(struct pt_regs));
+	err |= __copy_to_user(sc->regs.gpr, regs, 32 * sizeof(unsigned long));
+	err |= __copy_to_user(&sc->regs.pc, &regs->pc, sizeof(unsigned long));
+	err |= __copy_to_user(&sc->regs.sr, &regs->sr, sizeof(unsigned long));
 
 	/* then some other stuff */
 
 	err |= __put_user(mask, &sc->oldmask);
 
-	err |= __put_user(usp, &sc->usp);
-
 	return err;
 }
 
diff --git a/arch/powerpc/boot/dts/p1023rds.dts b/arch/powerpc/boot/dts/p1023rds.dts
index bfa96aa8f2c..d9b776740a6 100644
--- a/arch/powerpc/boot/dts/p1023rds.dts
+++ b/arch/powerpc/boot/dts/p1023rds.dts
@@ -387,7 +387,7 @@
 			#size-cells = <1>;
 			compatible = "cfi-flash";
 			reg = <0x0 0x0 0x02000000>;
-			bank-width = <1>;
+			bank-width = <2>;
 			device-width = <1>;
 			partition@0 {
 				label = "ramdisk";
diff --git a/arch/powerpc/configs/85xx/p1023rds_defconfig b/arch/powerpc/configs/85xx/p1023rds_defconfig
index 980ff8f61fd..3ff5a81c709 100644
--- a/arch/powerpc/configs/85xx/p1023rds_defconfig
+++ b/arch/powerpc/configs/85xx/p1023rds_defconfig
@@ -171,3 +171,4 @@ CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_SHA512=y
 CONFIG_CRYPTO_AES=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
+CONFIG_CRYPTO_DEV_FSL_CAAM=y
diff --git a/arch/powerpc/configs/corenet32_smp_defconfig b/arch/powerpc/configs/corenet32_smp_defconfig
index 10562a5c65b..4311d02a3bf 100644
--- a/arch/powerpc/configs/corenet32_smp_defconfig
+++ b/arch/powerpc/configs/corenet32_smp_defconfig
@@ -185,3 +185,4 @@ CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_SHA512=y
 CONFIG_CRYPTO_AES=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
+CONFIG_CRYPTO_DEV_FSL_CAAM=y
diff --git a/arch/powerpc/configs/corenet64_smp_defconfig b/arch/powerpc/configs/corenet64_smp_defconfig
index d32283555b5..c92c204a204 100644
--- a/arch/powerpc/configs/corenet64_smp_defconfig
+++ b/arch/powerpc/configs/corenet64_smp_defconfig
@@ -100,5 +100,8 @@ CONFIG_DEBUG_INFO=y
 CONFIG_SYSCTL_SYSCALL_CHECK=y
 CONFIG_VIRQ_DEBUG=y
 CONFIG_CRYPTO_PCBC=m
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_AES=y
 # CONFIG_CRYPTO_ANSI_CPRNG is not set
-CONFIG_CRYPTO_DEV_TALITOS=y
+CONFIG_CRYPTO_DEV_FSL_CAAM=y
diff --git a/arch/powerpc/configs/mpc85xx_defconfig b/arch/powerpc/configs/mpc85xx_defconfig
index fcd85d2c72d..a3467bfb767 100644
--- a/arch/powerpc/configs/mpc85xx_defconfig
+++ b/arch/powerpc/configs/mpc85xx_defconfig
@@ -139,6 +139,7 @@ CONFIG_SND=y
 CONFIG_SND_INTEL8X0=y
 # CONFIG_SND_PPC is not set
 # CONFIG_SND_USB is not set
+CONFIG_SND_SOC=y
 CONFIG_HID_A4TECH=y
 CONFIG_HID_APPLE=y
 CONFIG_HID_BELKIN=y
diff --git a/arch/powerpc/configs/mpc85xx_smp_defconfig b/arch/powerpc/configs/mpc85xx_smp_defconfig
index 908c941fc24..9693f6ed3da 100644
--- a/arch/powerpc/configs/mpc85xx_smp_defconfig
+++ b/arch/powerpc/configs/mpc85xx_smp_defconfig
@@ -140,6 +140,7 @@ CONFIG_SND=y
 CONFIG_SND_INTEL8X0=y
 # CONFIG_SND_PPC is not set
 # CONFIG_SND_USB is not set
+CONFIG_SND_SOC=y
 CONFIG_HID_A4TECH=y
 CONFIG_HID_APPLE=y
 CONFIG_HID_BELKIN=y
diff --git a/arch/um/Kconfig.x86 b/arch/um/Kconfig.x86
index d31ecf346b4..21bebe63df6 100644
--- a/arch/um/Kconfig.x86
+++ b/arch/um/Kconfig.x86
@@ -10,6 +10,10 @@ config CMPXCHG_LOCAL
 	bool
 	default n
 
+config CMPXCHG_DOUBLE
+	bool
+	default n
+
 source "arch/x86/Kconfig.cpu"
 
 endmenu
diff --git a/arch/um/Makefile b/arch/um/Makefile
index fab8121d2b3..c0f712cc7c5 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -41,7 +41,7 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)
 KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
 	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap	\
 	-Din6addr_loopback=kernel_in6addr_loopback \
-	-Din6addr_any=kernel_in6addr_any
+	-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
 
 KBUILD_AFLAGS += $(ARCH_INCLUDE)
 
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index d51c404239a..364c8a15c4c 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -399,8 +399,8 @@ int line_setup_irq(int fd, int input, int output, struct line *line, void *data)
  * is done under a spinlock.  Checking whether the device is in use is
  * line->tty->count > 1, also under the spinlock.
  *
- * tty->count serves to decide whether the device should be enabled or
- * disabled on the host.  If it's equal to 1, then we are doing the
+ * line->count serves to decide whether the device should be enabled or
+ * disabled on the host.  If it's equal to 0, then we are doing the
  * first open or last close.  Otherwise, open and close just return.
  */
 
@@ -414,16 +414,16 @@ int line_open(struct line *lines, struct tty_struct *tty)
 		goto out_unlock;
 
 	err = 0;
-	if (tty->count > 1)
+	if (line->count++)
 		goto out_unlock;
 
-	spin_unlock(&line->count_lock);
-
+	BUG_ON(tty->driver_data);
 	tty->driver_data = line;
 	line->tty = tty;
 
+	spin_unlock(&line->count_lock);
 	err = enable_chan(line);
-	if (err)
+	if (err) /* line_close() will be called by our caller */
 		return err;
 
 	INIT_DELAYED_WORK(&line->task, line_timer_cb);
@@ -436,7 +436,7 @@ int line_open(struct line *lines, struct tty_struct *tty)
 	chan_window_size(&line->chan_list, &tty->winsize.ws_row,
 			 &tty->winsize.ws_col);
 
-	return err;
+	return 0;
 
 out_unlock:
 	spin_unlock(&line->count_lock);
@@ -460,17 +460,16 @@ void line_close(struct tty_struct *tty, struct file * filp)
 	flush_buffer(line);
 
 	spin_lock(&line->count_lock);
-	if (!line->valid)
-		goto out_unlock;
+	BUG_ON(!line->valid);
 
-	if (tty->count > 1)
+	if (--line->count)
 		goto out_unlock;
 
-	spin_unlock(&line->count_lock);
-
 	line->tty = NULL;
 	tty->driver_data = NULL;
 
+	spin_unlock(&line->count_lock);
+
 	if (line->sigio) {
 		unregister_winch(tty);
 		line->sigio = 0;
@@ -498,7 +497,7 @@ static int setup_one_line(struct line *lines, int n, char *init, int init_prio,
 
 	spin_lock(&line->count_lock);
 
-	if (line->tty != NULL) {
+	if (line->count) {
 		*error_out = "Device is already open";
 		goto out;
 	}
@@ -722,41 +721,53 @@ struct winch {
 	int pid;
 	struct tty_struct *tty;
 	unsigned long stack;
+	struct work_struct work;
 };
 
-static void free_winch(struct winch *winch, int free_irq_ok)
+static void __free_winch(struct work_struct *work)
 {
-	if (free_irq_ok)
-		free_irq(WINCH_IRQ, winch);
-
-	list_del(&winch->list);
+	struct winch *winch = container_of(work, struct winch, work);
+	free_irq(WINCH_IRQ, winch);
 
 	if (winch->pid != -1)
 		os_kill_process(winch->pid, 1);
-	if (winch->fd != -1)
-		os_close_file(winch->fd);
 	if (winch->stack != 0)
 		free_stack(winch->stack, 0);
 	kfree(winch);
 }
 
+static void free_winch(struct winch *winch)
+{
+	int fd = winch->fd;
+	winch->fd = -1;
+	if (fd != -1)
+		os_close_file(fd);
+	list_del(&winch->list);
+	__free_winch(&winch->work);
+}
+
 static irqreturn_t winch_interrupt(int irq, void *data)
 {
 	struct winch *winch = data;
 	struct tty_struct *tty;
 	struct line *line;
+	int fd = winch->fd;
 	int err;
 	char c;
 
-	if (winch->fd != -1) {
-		err = generic_read(winch->fd, &c, NULL);
+	if (fd != -1) {
+		err = generic_read(fd, &c, NULL);
 		if (err < 0) {
 			if (err != -EAGAIN) {
+				winch->fd = -1;
+				list_del(&winch->list);
+				os_close_file(fd);
 				printk(KERN_ERR "winch_interrupt : "
 				       "read failed, errno = %d\n", -err);
 				printk(KERN_ERR "fd %d is losing SIGWINCH "
 				       "support\n", winch->tty_fd);
-				free_winch(winch, 0);
+				INIT_WORK(&winch->work, __free_winch);
+				schedule_work(&winch->work);
 				return IRQ_HANDLED;
 			}
 			goto out;
@@ -828,7 +839,7 @@ static void unregister_winch(struct tty_struct *tty)
 	list_for_each_safe(ele, next, &winch_handlers) {
 		winch = list_entry(ele, struct winch, list);
 		if (winch->tty == tty) {
-			free_winch(winch, 1);
+			free_winch(winch);
 			break;
 		}
 	}
@@ -844,7 +855,7 @@ static void winch_cleanup(void)
 
 	list_for_each_safe(ele, next, &winch_handlers) {
 		winch = list_entry(ele, struct winch, list);
-		free_winch(winch, 1);
+		free_winch(winch);
 	}
 
 	spin_unlock(&winch_handler_lock);
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 8ac7146c237..2e1de572860 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -123,6 +123,7 @@ static int xterm_open(int input, int output, int primary, void *d,
 		err = -errno;
 		printk(UM_KERN_ERR "xterm_open : unlink failed, errno = %d\n",
 		       errno);
+		close(fd);
 		return err;
 	}
 	close(fd);
diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h
index ae084ad1a3a..1a7d2757fe0 100644
--- a/arch/um/include/asm/ptrace-generic.h
+++ b/arch/um/include/asm/ptrace-generic.h
@@ -42,10 +42,6 @@ extern long subarch_ptrace(struct task_struct *child, long request,
 	unsigned long addr, unsigned long data);
 extern unsigned long getreg(struct task_struct *child, int regno);
 extern int putreg(struct task_struct *child, int regno, unsigned long value);
-extern int get_fpregs(struct user_i387_struct __user *buf,
-		      struct task_struct *child);
-extern int set_fpregs(struct user_i387_struct __user *buf,
-		      struct task_struct *child);
 
 extern int arch_copy_tls(struct task_struct *new);
 extern void clear_flushed_tls(struct task_struct *task);
diff --git a/arch/um/include/shared/line.h b/arch/um/include/shared/line.h
index 72f4f25af24..63df3ca02ac 100644
--- a/arch/um/include/shared/line.h
+++ b/arch/um/include/shared/line.h
@@ -33,6 +33,7 @@ struct line_driver {
 struct line {
 	struct tty_struct *tty;
 	spinlock_t count_lock;
+	unsigned long count;
 	int valid;
 
 	char *init_str;
diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h
index b0b4589e0eb..f1e0aa56c52 100644
--- a/arch/um/include/shared/registers.h
+++ b/arch/um/include/shared/registers.h
@@ -16,7 +16,7 @@ extern int restore_fpx_registers(int pid, unsigned long *fp_regs);
 extern int save_registers(int pid, struct uml_pt_regs *regs);
 extern int restore_registers(int pid, struct uml_pt_regs *regs);
 extern int init_registers(int pid);
-extern void get_safe_registers(unsigned long *regs);
+extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
 extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
 extern int get_fp_registers(int pid, unsigned long *regs);
 extern int put_fp_registers(int pid, unsigned long *regs);
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index fab4371184f..21c1ae7c3d7 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -202,7 +202,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 		arch_copy_thread(&current->thread.arch, &p->thread.arch);
 	}
 	else {
-		get_safe_registers(p->thread.regs.regs.gp);
+		get_safe_registers(p->thread.regs.regs.gp, p->thread.regs.regs.fp);
 		p->thread.request.u.thread = current->thread.request.u.thread;
 		handler = new_thread_handler;
 	}
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 701b672c112..c9da32b0c70 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -50,23 +50,11 @@ long arch_ptrace(struct task_struct *child, long request,
 	void __user *vp = p;
 
 	switch (request) {
-	/* read word at location addr. */
-	case PTRACE_PEEKTEXT:
-	case PTRACE_PEEKDATA:
-		ret = generic_ptrace_peekdata(child, addr, data);
-		break;
-
 	/* read the word at location addr in the USER area. */
 	case PTRACE_PEEKUSR:
 		ret = peek_user(child, addr, data);
 		break;
 
-	/* write the word at location addr. */
-	case PTRACE_POKETEXT:
-	case PTRACE_POKEDATA:
-		ret = generic_ptrace_pokedata(child, addr, data);
-		break;
-
 	/* write the word at location addr in the USER area */
 	case PTRACE_POKEUSR:
 		ret = poke_user(child, addr, data);
@@ -107,16 +95,6 @@ long arch_ptrace(struct task_struct *child, long request,
 		break;
 	}
 #endif
-#ifdef PTRACE_GETFPREGS
-	case PTRACE_GETFPREGS: /* Get the child FPU state. */
-		ret = get_fpregs(vp, child);
-		break;
-#endif
-#ifdef PTRACE_SETFPREGS
-	case PTRACE_SETFPREGS: /* Set the child FPU state. */
-		ret = set_fpregs(vp, child);
-		break;
-#endif
 	case PTRACE_GET_THREAD_AREA:
 		ret = ptrace_get_thread_area(child, addr, vp);
 		break;
@@ -154,12 +132,6 @@ long arch_ptrace(struct task_struct *child, long request,
 		break;
 	}
 #endif
-#ifdef PTRACE_ARCH_PRCTL
-	case PTRACE_ARCH_PRCTL:
-		/* XXX Calls ptrace on the host - needs some SMP thinking */
-		ret = arch_prctl(child, data, (void __user *) addr);
-		break;
-#endif
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		if (ret == -EIO)
diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c
index 830fe6a1518..b866b9e3bef 100644
--- a/arch/um/os-Linux/registers.c
+++ b/arch/um/os-Linux/registers.c
@@ -8,6 +8,8 @@
 #include <string.h>
 #include <sys/ptrace.h>
 #include "sysdep/ptrace.h"
+#include "sysdep/ptrace_user.h"
+#include "registers.h"
 
 int save_registers(int pid, struct uml_pt_regs *regs)
 {
@@ -32,6 +34,7 @@ int restore_registers(int pid, struct uml_pt_regs *regs)
 /* This is set once at boot time and not changed thereafter */
 
 static unsigned long exec_regs[MAX_REG_NR];
+static unsigned long exec_fp_regs[FP_SIZE];
 
 int init_registers(int pid)
 {
@@ -42,10 +45,14 @@ int init_registers(int pid)
 		return -errno;
 
 	arch_init_registers(pid);
+	get_fp_registers(pid, exec_fp_regs);
 	return 0;
 }
 
-void get_safe_registers(unsigned long *regs)
+void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
 {
 	memcpy(regs, exec_regs, sizeof(exec_regs));
+
+	if (fp_regs)
+		memcpy(fp_regs, exec_fp_regs, sizeof(exec_fp_regs));
 }
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index d261f170d12..e771398be5f 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -39,7 +39,7 @@ static unsigned long syscall_regs[MAX_REG_NR];
 
 static int __init init_syscall_regs(void)
 {
-	get_safe_registers(syscall_regs);
+	get_safe_registers(syscall_regs, NULL);
 	syscall_regs[REGS_IP_INDEX] = STUB_CODE +
 		((unsigned long) &batch_syscall_stub -
 		 (unsigned long) &__syscall_stub_start);
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index d6e0a2234b8..dee0e8cf8ad 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -373,6 +373,9 @@ void userspace(struct uml_pt_regs *regs)
 		if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp))
 			fatal_sigsegv();
 
+		if (put_fp_registers(pid, regs->fp))
+			fatal_sigsegv();
+
 		/* Now we set local_using_sysemu to be used for one loop */
 		local_using_sysemu = get_using_sysemu();
 
@@ -399,6 +402,12 @@ void userspace(struct uml_pt_regs *regs)
 			fatal_sigsegv();
 		}
 
+		if (get_fp_registers(pid, regs->fp)) {
+			printk(UM_KERN_ERR "userspace -  get_fp_registers failed, "
+			       "errno = %d\n", errno);
+			fatal_sigsegv();
+		}
+
 		UPT_SYSCALL_NR(regs) = -1; /* Assume: It's not a syscall */
 
 		if (WIFSTOPPED(status)) {
@@ -457,10 +466,11 @@ void userspace(struct uml_pt_regs *regs)
 }
 
 static unsigned long thread_regs[MAX_REG_NR];
+static unsigned long thread_fp_regs[FP_SIZE];
 
 static int __init init_thread_regs(void)
 {
-	get_safe_registers(thread_regs);
+	get_safe_registers(thread_regs, thread_fp_regs);
 	/* Set parent's instruction pointer to start of clone-stub */
 	thread_regs[REGS_IP_INDEX] = STUB_CODE +
 				(unsigned long) stub_clone_handler -
@@ -503,6 +513,13 @@ int copy_context_skas0(unsigned long new_stack, int pid)
 		return err;
 	}
 
+	err = put_fp_registers(pid, thread_fp_regs);
+	if (err < 0) {
+		printk(UM_KERN_ERR "copy_context_skas0 : put_fp_registers "
+		       "failed, pid = %d, err = %d\n", pid, err);
+		return err;
+	}
+
 	/* set a well known return code for detection of child write failure */
 	child_data->err = 12345678;
 
diff --git a/arch/um/sys-i386/asm/ptrace.h b/arch/um/sys-i386/asm/ptrace.h
index 0273e4d09af..5d2a5911253 100644
--- a/arch/um/sys-i386/asm/ptrace.h
+++ b/arch/um/sys-i386/asm/ptrace.h
@@ -42,11 +42,6 @@
  */
 struct user_desc;
 
-extern int get_fpxregs(struct user_fxsr_struct __user *buf,
-		       struct task_struct *child);
-extern int set_fpxregs(struct user_fxsr_struct __user *buf,
-		       struct task_struct *tsk);
-
 extern int ptrace_get_thread_area(struct task_struct *child, int idx,
                                   struct user_desc __user *user_desc);
 
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index d23b2d3ea38..3375c271785 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -145,7 +145,7 @@ int peek_user(struct task_struct *child, long addr, long data)
 	return put_user(tmp, (unsigned long __user *) data);
 }
 
-int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
+static int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
 	int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
 	struct user_i387_struct fpregs;
@@ -161,7 +161,7 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	return n;
 }
 
-int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
+static int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
 	int n, cpu = ((struct thread_info *) child->stack)->cpu;
 	struct user_i387_struct fpregs;
@@ -174,7 +174,7 @@ int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 				    (unsigned long *) &fpregs);
 }
 
-int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
+static int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 {
 	int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
 	struct user_fxsr_struct fpregs;
@@ -190,7 +190,7 @@ int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 	return n;
 }
 
-int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
+static int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 {
 	int n, cpu = ((struct thread_info *) child->stack)->cpu;
 	struct user_fxsr_struct fpregs;
@@ -206,5 +206,23 @@ int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 long subarch_ptrace(struct task_struct *child, long request,
 		    unsigned long addr, unsigned long data)
 {
-	return -EIO;
+	int ret = -EIO;
+	void __user *datap = (void __user *) data;
+	switch (request) {
+	case PTRACE_GETFPREGS: /* Get the child FPU state. */
+		ret = get_fpregs(datap, child);
+		break;
+	case PTRACE_SETFPREGS: /* Set the child FPU state. */
+		ret = set_fpregs(datap, child);
+		break;
+	case PTRACE_GETFPXREGS: /* Get the child FPU state. */
+		ret = get_fpxregs(datap, child);
+		break;
+	case PTRACE_SETFPXREGS: /* Set the child FPU state. */
+		ret = set_fpxregs(datap, child);
+		break;
+	default:
+		ret = -EIO;
+	}
+	return ret;
 }
diff --git a/arch/um/sys-i386/shared/sysdep/ptrace.h b/arch/um/sys-i386/shared/sysdep/ptrace.h
index d50e62e0707..c398a507611 100644
--- a/arch/um/sys-i386/shared/sysdep/ptrace.h
+++ b/arch/um/sys-i386/shared/sysdep/ptrace.h
@@ -53,6 +53,7 @@ extern int sysemu_supported;
 
 struct uml_pt_regs {
 	unsigned long gp[MAX_REG_NR];
+	unsigned long fp[HOST_FPX_SIZE];
 	struct faultinfo faultinfo;
 	long syscall;
 	int is_user;
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index f43613643cd..4005506834f 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -145,7 +145,7 @@ int is_syscall(unsigned long addr)
 	return instr == 0x050f;
 }
 
-int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
+static int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
 	int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
 	long fpregs[HOST_FP_SIZE];
@@ -162,7 +162,7 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	return n;
 }
 
-int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
+static int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
 	int n, cpu = ((struct thread_info *) child->stack)->cpu;
 	long fpregs[HOST_FP_SIZE];
@@ -182,12 +182,16 @@ long subarch_ptrace(struct task_struct *child, long request,
 	void __user *datap = (void __user *) data;
 
 	switch (request) {
-	case PTRACE_GETFPXREGS: /* Get the child FPU state. */
+	case PTRACE_GETFPREGS: /* Get the child FPU state. */
 		ret = get_fpregs(datap, child);
 		break;
-	case PTRACE_SETFPXREGS: /* Set the child FPU state. */
+	case PTRACE_SETFPREGS: /* Set the child FPU state. */
 		ret = set_fpregs(datap, child);
 		break;
+	case PTRACE_ARCH_PRCTL:
+		/* XXX Calls ptrace on the host - needs some SMP thinking */
+		ret = arch_prctl(child, data, (void __user *) addr);
+		break;
 	}
 
 	return ret;
diff --git a/arch/um/sys-x86_64/shared/sysdep/ptrace.h b/arch/um/sys-x86_64/shared/sysdep/ptrace.h
index fdba5457947..8ee8f8e12af 100644
--- a/arch/um/sys-x86_64/shared/sysdep/ptrace.h
+++ b/arch/um/sys-x86_64/shared/sysdep/ptrace.h
@@ -85,6 +85,7 @@
 
 struct uml_pt_regs {
 	unsigned long gp[MAX_REG_NR];
+	unsigned long fp[HOST_FP_SIZE];
 	struct faultinfo faultinfo;
 	long syscall;
 	int is_user;
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
index 4554cc6fb96..091508b533b 100644
--- a/arch/x86/include/asm/alternative-asm.h
+++ b/arch/x86/include/asm/alternative-asm.h
@@ -16,7 +16,6 @@
 #endif
 
 .macro altinstruction_entry orig alt feature orig_len alt_len
-	.align 8
 	.long \orig - .
 	.long \alt - .
 	.word \feature
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index 23fb6d79f20..37ad100a221 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -48,9 +48,6 @@ struct alt_instr {
 	u16 cpuid;		/* cpuid bit set for replacement */
 	u8  instrlen;		/* length of original instruction */
 	u8  replacementlen;	/* length of new instruction, <= instrlen */
-#ifdef CONFIG_X86_64
-	u32 pad2;
-#endif
 };
 
 extern void alternative_instructions(void);
@@ -83,7 +80,6 @@ static inline int alternatives_text_reserved(void *start, void *end)
 									\
       "661:\n\t" oldinstr "\n662:\n"					\
       ".section .altinstructions,\"a\"\n"				\
-      _ASM_ALIGN "\n"							\
       "	 .long 661b - .\n"			/* label           */	\
       "	 .long 663f - .\n"			/* new instruction */	\
       "	 .word " __stringify(feature) "\n"	/* feature bit     */	\
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 4258aac99a6..88b23a43f34 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -332,7 +332,6 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
 		asm goto("1: jmp %l[t_no]\n"
 			 "2:\n"
 			 ".section .altinstructions,\"a\"\n"
-			 _ASM_ALIGN "\n"
 			 " .long 1b - .\n"
 			 " .long 0\n"		/* no replacement */
 			 " .word %P0\n"		/* feature bit */
@@ -350,7 +349,6 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
 		asm volatile("1: movb $0,%0\n"
 			     "2:\n"
 			     ".section .altinstructions,\"a\"\n"
-			     _ASM_ALIGN "\n"
 			     " .long 1b - .\n"
 			     " .long 3f - .\n"
 			     " .word %P1\n"		/* feature bit */
diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h
index a518c0a4504..c59cc97fe6c 100644
--- a/arch/x86/include/asm/pvclock.h
+++ b/arch/x86/include/asm/pvclock.h
@@ -44,7 +44,7 @@ static inline u64 pvclock_scale_delta(u64 delta, u32 mul_frac, int shift)
 		: "a" ((u32)delta), "1" ((u32)(delta >> 32)), "2" (mul_frac) );
 #elif defined(__x86_64__)
 	__asm__ (
-		"mul %[mul_frac] ; shrd $32, %[hi], %[lo]"
+		"mulq %[mul_frac] ; shrd $32, %[hi], %[lo]"
 		: [lo]"=a"(product),
 		  [hi]"=d"(tmp)
 		: "0"(delta),
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 4ee3abf20ed..cfa62ec090e 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1900,6 +1900,9 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
 
 	perf_callchain_store(entry, regs->ip);
 
+	if (!current->mm)
+		return;
+
 	if (perf_callchain_user32(regs, entry))
 		return;
 
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index c95330267f0..039d91315bc 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -365,8 +365,13 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
 	 */
 	if (bus) {
 		struct pci_bus *child;
-		list_for_each_entry(child, &bus->children, node)
-			pcie_bus_configure_settings(child, child->self->pcie_mpss);
+		list_for_each_entry(child, &bus->children, node) {
+			struct pci_dev *self = child->self;
+			if (!self)
+				continue;
+
+			pcie_bus_configure_settings(child, self->pcie_mpss);
+		}
 	}
 
 	if (!bus)
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 20a61427506..3dd53f997b1 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1721,10 +1721,8 @@ void __init xen_setup_machphys_mapping(void)
 		machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
 	}
 #ifdef CONFIG_X86_32
-	if ((machine_to_phys_mapping + machine_to_phys_nr)
-	    < machine_to_phys_mapping)
-		machine_to_phys_nr = (unsigned long *)NULL
-				     - machine_to_phys_mapping;
+	WARN_ON((machine_to_phys_mapping + (machine_to_phys_nr - 1))
+		< machine_to_phys_mapping);
 #endif
 }
 
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index df118a825f3..46d6d21dbdb 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -184,6 +184,19 @@ static unsigned long __init xen_set_identity(const struct e820entry *list,
 					PFN_UP(start_pci), PFN_DOWN(last));
 	return identity;
 }
+
+static unsigned long __init xen_get_max_pages(void)
+{
+	unsigned long max_pages = MAX_DOMAIN_PAGES;
+	domid_t domid = DOMID_SELF;
+	int ret;
+
+	ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
+	if (ret > 0)
+		max_pages = ret;
+	return min(max_pages, MAX_DOMAIN_PAGES);
+}
+
 /**
  * machine_specific_memory_setup - Hook for machine specific memory setup.
  **/
@@ -292,6 +305,14 @@ char * __init xen_memory_setup(void)
 
 	sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
 
+	extra_limit = xen_get_max_pages();
+	if (max_pfn + extra_pages > extra_limit) {
+		if (extra_limit > max_pfn)
+			extra_pages = extra_limit - max_pfn;
+		else
+			extra_pages = 0;
+	}
+
 	extra_pages += xen_return_unused_memory(xen_start_info->nr_pages, &e820);
 
 	/*
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index e79dbb95482..041d4fe9dfe 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -32,6 +32,7 @@
 #include <xen/page.h>
 #include <xen/events.h>
 
+#include <xen/hvc-console.h>
 #include "xen-ops.h"
 #include "mmu.h"
 
@@ -207,6 +208,15 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
 	unsigned cpu;
 	unsigned int i;
 
+	if (skip_ioapic_setup) {
+		char *m = (max_cpus == 0) ?
+			"The nosmp parameter is incompatible with Xen; " \
+			"use Xen dom0_max_vcpus=1 parameter" :
+			"The noapic parameter is incompatible with Xen";
+
+		xen_raw_printk(m);
+		panic(m);
+	}
 	xen_init_lock_cpu(0);
 
 	smp_store_cpu_info(0);
@@ -522,7 +532,6 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
 	WARN_ON(xen_smp_intr_init(0));
 
 	xen_init_lock_cpu(0);
-	xen_init_spinlocks();
 }
 
 static int __cpuinit xen_hvm_cpu_up(unsigned int cpu)
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 5158c505bef..163b4679556 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -168,9 +168,10 @@ cycle_t xen_clocksource_read(void)
         struct pvclock_vcpu_time_info *src;
 	cycle_t ret;
 
-	src = &get_cpu_var(xen_vcpu)->time;
+	preempt_disable_notrace();
+	src = &__get_cpu_var(xen_vcpu)->time;
 	ret = pvclock_clocksource_read(src);
-	put_cpu_var(xen_vcpu);
+	preempt_enable_notrace();
 	return ret;
 }
 
diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S
index 22a2093b586..b040b0e518c 100644
--- a/arch/x86/xen/xen-asm_32.S
+++ b/arch/x86/xen/xen-asm_32.S
@@ -113,11 +113,13 @@ xen_iret_start_crit:
 
 	/*
 	 * If there's something pending, mask events again so we can
-	 * jump back into xen_hypervisor_callback
+	 * jump back into xen_hypervisor_callback. Otherwise do not
+	 * touch XEN_vcpu_info_mask.
 	 */
-	sete XEN_vcpu_info_mask(%eax)
+	jne 1f
+	movb $1, XEN_vcpu_info_mask(%eax)
 
-	popl %eax
+1:	popl %eax
 
 	/*
 	 * From this point on the registers are restored and the stack