34 files changed, 227 insertions, 209 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e084b7e981e8..776d76b8cb69 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -220,8 +220,9 @@ config NEED_MACH_MEMORY_H
           be avoided when possible.
 
 config PHYS_OFFSET
-        hex "Physical address of main memory"
+        hex "Physical address of main memory" if MMU
         depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
+        default DRAM_BASE if !MMU
         help
           Please provide the physical address corresponding to the
           location of main memory in your system.
diff --git a/arch/arm/configs/imx_v4_v5_defconfig b/arch/arm/configs/imx_v4_v5_defconfig
index 11a4192197c8..cf497ce41dfe 100644
--- a/arch/arm/configs/imx_v4_v5_defconfig
+++ b/arch/arm/configs/imx_v4_v5_defconfig
@@ -18,9 +18,10 @@ CONFIG_ARCH_MXC=y
 CONFIG_ARCH_IMX_V4_V5=y
 CONFIG_ARCH_MX1ADS=y
 CONFIG_MACH_SCB9328=y
+CONFIG_MACH_APF9328=y
 CONFIG_MACH_MX21ADS=y
 CONFIG_MACH_MX25_3DS=y
-CONFIG_MACH_EUKREA_CPUIMX25=y
+CONFIG_MACH_EUKREA_CPUIMX25SD=y
 CONFIG_MACH_MX27ADS=y
 CONFIG_MACH_PCM038=y
 CONFIG_MACH_CPUIMX27=y
@@ -72,17 +73,16 @@ CONFIG_MTD_CFI_GEOMETRY=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_MXC=y
 CONFIG_MTD_UBI=y
 CONFIG_MISC_DEVICES=y
 CONFIG_EEPROM_AT24=y
 CONFIG_EEPROM_AT25=y
 CONFIG_NETDEVICES=y
-CONFIG_NET_ETHERNET=y
-CONFIG_SMC91X=y
 CONFIG_DM9000=y
+CONFIG_SMC91X=y
 CONFIG_SMC911X=y
-# CONFIG_NETDEV_1000 is not set
-# CONFIG_NETDEV_10000 is not set
+CONFIG_SMSC_PHY=y
 # CONFIG_INPUT_MOUSEDEV is not set
 CONFIG_INPUT_EVDEV=y
 # CONFIG_INPUT_KEYBOARD is not set
@@ -100,6 +100,7 @@ CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_IMX=y
 CONFIG_SPI=y
 CONFIG_SPI_IMX=y
+CONFIG_SPI_SPIDEV=y
 CONFIG_W1=y
 CONFIG_W1_MASTER_MXC=y
 CONFIG_W1_SLAVE_THERM=y
@@ -139,6 +140,7 @@ CONFIG_MMC=y
 CONFIG_MMC_MXC=y
 CONFIG_NEW_LEDS=y
 CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_MC13783=y
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=y
diff --git a/arch/arm/include/asm/unwind.h b/arch/arm/include/asm/unwind.h
index a5edf421005c..d1c3f3a71c94 100644
--- a/arch/arm/include/asm/unwind.h
+++ b/arch/arm/include/asm/unwind.h
@@ -30,14 +30,15 @@ enum unwind_reason_code {
 };
 
 struct unwind_idx {
-        unsigned long addr;
+        unsigned long addr_offset;
         unsigned long insn;
 };
 
 struct unwind_table {
         struct list_head list;
-        struct unwind_idx *start;
-        struct unwind_idx *stop;
+        const struct unwind_idx *start;
+        const struct unwind_idx *origin;
+        const struct unwind_idx *stop;
         unsigned long begin_addr;
         unsigned long end_addr;
 };
@@ -49,15 +50,6 @@ extern struct unwind_table *unwind_table_add(unsigned long start,
 extern void unwind_table_del(struct unwind_table *tab);
 extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk);
 
-#ifdef CONFIG_ARM_UNWIND
-extern int __init unwind_init(void);
-#else
-static inline int __init unwind_init(void)
-{
-        return 0;
-}
-#endif
-
 #endif  /* !__ASSEMBLY__ */
 
 #ifdef CONFIG_ARM_UNWIND
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 8e9c98edc068..88b0941ce51e 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -640,6 +640,9 @@ static struct platform_device_id armpmu_plat_device_ids[] = {
 
 static int __devinit armpmu_device_probe(struct platform_device *pdev)
 {
+        if (!cpu_pmu)
+                return -ENODEV;
+
         cpu_pmu->plat_device = pdev;
         return 0;
 }
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 3448a3f9cc8c..8fc2c8fcbdc6 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -895,8 +895,6 @@ void __init setup_arch(char **cmdline_p)
 {
         struct machine_desc *mdesc;
 
-        unwind_init();
-
         setup_processor();
         mdesc = setup_machine_fdt(__atags_pointer);
         if (!mdesc)
@@ -904,6 +902,12 @@ void __init setup_arch(char **cmdline_p)
         machine_desc = mdesc;
         machine_name = mdesc->name;
 
+#ifdef CONFIG_ZONE_DMA
+        if (mdesc->dma_zone_size) {
+                extern unsigned long arm_dma_zone_size;
+                arm_dma_zone_size = mdesc->dma_zone_size;
+        }
+#endif
         if (mdesc->soft_reboot)
                 reboot_setup("s");
 
@@ -934,12 +938,6 @@ void __init setup_arch(char **cmdline_p)
 
         tcm_init();
 
-#ifdef CONFIG_ZONE_DMA
-        if (mdesc->dma_zone_size) {
-                extern unsigned long arm_dma_zone_size;
-                arm_dma_zone_size = mdesc->dma_zone_size;
-        }
-#endif
 #ifdef CONFIG_MULTI_IRQ_HANDLER
         handle_arch_irq = mdesc->handle_irq;
 #endif
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index e7e8365795c3..00df012c4678 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -67,7 +67,7 @@ EXPORT_SYMBOL(__aeabi_unwind_cpp_pr2);
 
 struct unwind_ctrl_block {
         unsigned long vrs[16];          /* virtual register set */
-        unsigned long *insn;            /* pointer to the current instructions word */
+        const unsigned long *insn;      /* pointer to the current instructions word */
         int entries;                    /* number of entries left to interpret */
         int byte;                       /* current byte number in the instructions word */
 };
@@ -83,8 +83,9 @@ enum regs {
         PC = 15
 };
 
-extern struct unwind_idx __start_unwind_idx[];
-extern struct unwind_idx __stop_unwind_idx[];
+extern const struct unwind_idx __start_unwind_idx[];
+static const struct unwind_idx *__origin_unwind_idx;
+extern const struct unwind_idx __stop_unwind_idx[];
 
 static DEFINE_SPINLOCK(unwind_lock);
 static LIST_HEAD(unwind_tables);
@@ -98,45 +99,99 @@ static LIST_HEAD(unwind_tables);
 })
 
 /*
- * Binary search in the unwind index. The entries entries are
+ * Binary search in the unwind index. The entries are
  * guaranteed to be sorted in ascending order by the linker.
+ *
+ * start = first entry
+ * origin = first entry with positive offset (or stop if there is no such entry)
+ * stop - 1 = last entry
  */
-static struct unwind_idx *search_index(unsigned long addr,
-                                       struct unwind_idx *first,
-                                       struct unwind_idx *last)
+static const struct unwind_idx *search_index(unsigned long addr,
+                                       const struct unwind_idx *start,
+                                       const struct unwind_idx *origin,
+                                       const struct unwind_idx *stop)
 {
-        pr_debug("%s(%08lx, %p, %p)\n", __func__, addr, first, last);
+        unsigned long addr_prel31;
+
+        pr_debug("%s(%08lx, %p, %p, %p)\n",
+                        __func__, addr, start, origin, stop);
+
+        /*
+         * only search in the section with the matching sign. This way the
+         * prel31 numbers can be compared as unsigned longs.
+         */
+        if (addr < (unsigned long)start)
+                /* negative offsets: [start; origin) */
+                stop = origin;
+        else
+                /* positive offsets: [origin; stop) */
+                start = origin;
+
+        /* prel31 for address relavive to start */
+        addr_prel31 = (addr - (unsigned long)start) & 0x7fffffff;
 
-        if (addr < first->addr) {
+        while (start < stop - 1) {
+                const struct unwind_idx *mid = start + ((stop - start) >> 1);
+
+                /*
+                 * As addr_prel31 is relative to start an offset is needed to
+                 * make it relative to mid.
+                 */
+                if (addr_prel31 - ((unsigned long)mid - (unsigned long)start) <
+                                mid->addr_offset)
+                        stop = mid;
+                else {
+                        /* keep addr_prel31 relative to start */
+                        addr_prel31 -= ((unsigned long)mid -
+                                        (unsigned long)start);
+                        start = mid;
+                }
+        }
+
+        if (likely(start->addr_offset <= addr_prel31))
+                return start;
+        else {
                 pr_warning("unwind: Unknown symbol address %08lx\n", addr);
                 return NULL;
-        } else if (addr >= last->addr)
-                return last;
+        }
+}
 
-        while (first < last - 1) {
-                struct unwind_idx *mid = first + ((last - first + 1) >> 1);
+static const struct unwind_idx *unwind_find_origin(
+                const struct unwind_idx *start, const struct unwind_idx *stop)
+{
+        pr_debug("%s(%p, %p)\n", __func__, start, stop);
+        while (start < stop) {
+                const struct unwind_idx *mid = start + ((stop - start) >> 1);
 
-                if (addr < mid->addr)
-                        last = mid;
+                if (mid->addr_offset >= 0x40000000)
+                        /* negative offset */
+                        start = mid + 1;
                 else
-                        first = mid;
+                        /* positive offset */
+                        stop = mid;
         }
-
-        return first;
+        pr_debug("%s -> %p\n", __func__, stop);
+        return stop;
 }
 
-static struct unwind_idx *unwind_find_idx(unsigned long addr)
+static const struct unwind_idx *unwind_find_idx(unsigned long addr)
 {
-        struct unwind_idx *idx = NULL;
+        const struct unwind_idx *idx = NULL;
         unsigned long flags;
 
         pr_debug("%s(%08lx)\n", __func__, addr);
 
-        if (core_kernel_text(addr))
+        if (core_kernel_text(addr)) {
+                if (unlikely(!__origin_unwind_idx))
+                        __origin_unwind_idx =
+                                unwind_find_origin(__start_unwind_idx,
+                                                __stop_unwind_idx);
+
                 /* main unwind table */
                 idx = search_index(addr, __start_unwind_idx,
-                                   __stop_unwind_idx - 1);
-        else {
+                                   __origin_unwind_idx,
+                                   __stop_unwind_idx);
+        } else {
                 /* module unwind tables */
                 struct unwind_table *table;
 
@@ -145,7 +200,8 @@ static struct unwind_idx *unwind_find_idx(unsigned long addr)
                         if (addr >= table->begin_addr &&
                             addr < table->end_addr) {
                                 idx = search_index(addr, table->start,
-                                                   table->stop - 1);
+                                                   table->origin,
+                                                   table->stop);
                                 /* Move-to-front to exploit common traces */
                                 list_move(&table->list, &unwind_tables);
                                 break;
@@ -274,7 +330,7 @@ static int unwind_exec_insn(struct unwind_ctrl_block *ctrl)
 int unwind_frame(struct stackframe *frame)
 {
         unsigned long high, low;
-        struct unwind_idx *idx;
+        const struct unwind_idx *idx;
         struct unwind_ctrl_block ctrl;
 
         /* only go to a higher address on the stack */
@@ -399,7 +455,6 @@ struct unwind_table *unwind_table_add(unsigned long start, unsigned long size,
                                       unsigned long text_size)
 {
         unsigned long flags;
-        struct unwind_idx *idx;
         struct unwind_table *tab = kmalloc(sizeof(*tab), GFP_KERNEL);
 
         pr_debug("%s(%08lx, %08lx, %08lx, %08lx)\n", __func__, start, size,
@@ -408,15 +463,12 @@ struct unwind_table *unwind_table_add(unsigned long start, unsigned long size,
         if (!tab)
                 return tab;
 
-        tab->start = (struct unwind_idx *)start;
-        tab->stop = (struct unwind_idx *)(start + size);
+        tab->start = (const struct unwind_idx *)start;
+        tab->stop = (const struct unwind_idx *)(start + size);
+        tab->origin = unwind_find_origin(tab->start, tab->stop);
         tab->begin_addr = text_addr;
         tab->end_addr = text_addr + text_size;
 
-        /* Convert the symbol addresses to absolute values */
-        for (idx = tab->start; idx < tab->stop; idx++)
-                idx->addr = prel31_to_addr(&idx->addr);
-
         spin_lock_irqsave(&unwind_lock, flags);
         list_add_tail(&tab->list, &unwind_tables);
         spin_unlock_irqrestore(&unwind_lock, flags);
@@ -437,16 +489,3 @@ void unwind_table_del(struct unwind_table *tab)
 
         kfree(tab);
 }
-
-int __init unwind_init(void)
-{
-        struct unwind_idx *idx;
-
-        /* Convert the symbol addresses to absolute values */
-        for (idx = __start_unwind_idx; idx < __stop_unwind_idx; idx++)
-                idx->addr = prel31_to_addr(&idx->addr);
-
-        pr_debug("unwind: ARM stack unwinding initialised\n");
-
-        return 0;
-}
diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c
index 97343df8f132..85b5527d0918 100644
--- a/arch/arm/mach-exynos/mct.c
+++ b/arch/arm/mach-exynos/mct.c
@@ -44,8 +44,6 @@ struct mct_clock_event_device {
         char name[10];
 };
 
-static DEFINE_PER_CPU(struct mct_clock_event_device, percpu_mct_tick);
-
 static void exynos4_mct_write(unsigned int value, void *addr)
 {
         void __iomem *stat_addr;
@@ -264,6 +262,9 @@ static void exynos4_clockevent_init(void)
 }
 
 #ifdef CONFIG_LOCAL_TIMERS
+
+static DEFINE_PER_CPU(struct mct_clock_event_device, percpu_mct_tick);
+
 /* Clock event handling */
 static void exynos4_mct_tick_stop(struct mct_clock_event_device *mevt)
 {
@@ -428,9 +429,13 @@ int __cpuinit local_timer_setup(struct clock_event_device *evt)
 
 void local_timer_stop(struct clock_event_device *evt)
 {
+        unsigned int cpu = smp_processor_id();
         evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
         if (mct_int_type == MCT_INT_SPI)
-                disable_irq(evt->irq);
+                if (cpu == 0)
+                        remove_irq(evt->irq, &mct_tick0_event_irq);
+                else
+                        remove_irq(evt->irq, &mct_tick1_event_irq);
         else
                 disable_percpu_irq(IRQ_MCT_LOCALTIMER);
 }
@@ -443,6 +448,7 @@ static void __init exynos4_timer_resources(void)
 
         clk_rate = clk_get_rate(mct_clk);
 
+#ifdef CONFIG_LOCAL_TIMERS
         if (mct_int_type == MCT_INT_PPI) {
                 int err;
 
@@ -452,6 +458,7 @@ static void __init exynos4_timer_resources(void)
                 WARN(err, "MCT: can't request IRQ %d (%d)\n",
                      IRQ_MCT_LOCALTIMER, err);
         }
+#endif /* CONFIG_LOCAL_TIMERS */
 }
 
 static void __init exynos4_timer_init(void)
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index c44aa974e79c..0e6f1af260b6 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -132,7 +132,7 @@ config MACH_MX25_3DS
         select IMX_HAVE_PLATFORM_MXC_NAND
         select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
 
-config MACH_EUKREA_CPUIMX25
+config MACH_EUKREA_CPUIMX25SD
         bool "Support Eukrea CPUIMX25 Platform"
         select SOC_IMX25
         select IMX_HAVE_PLATFORM_FLEXCAN
@@ -148,7 +148,7 @@ config MACH_EUKREA_CPUIMX25
 
 choice
         prompt "Baseboard"
-        depends on MACH_EUKREA_CPUIMX25
+        depends on MACH_EUKREA_CPUIMX25SD
         default MACH_EUKREA_MBIMXSD25_BASEBOARD
 
 config MACH_EUKREA_MBIMXSD25_BASEBOARD
@@ -542,7 +542,7 @@ config MACH_MX35_3DS
           Include support for MX35PDK platform. This includes specific
           configurations for the board and its peripherals.
 
-config MACH_EUKREA_CPUIMX35
+config MACH_EUKREA_CPUIMX35SD
         bool "Support Eukrea CPUIMX35 Platform"
         select SOC_IMX35
         select IMX_HAVE_PLATFORM_FLEXCAN
@@ -560,7 +560,7 @@ config MACH_EUKREA_CPUIMX35
 
 choice
         prompt "Baseboard"
-        depends on MACH_EUKREA_CPUIMX35
+        depends on MACH_EUKREA_CPUIMX35SD
         default MACH_EUKREA_MBIMXSD35_BASEBOARD
 
 config MACH_EUKREA_MBIMXSD35_BASEBOARD
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index aba73214c2a8..d97f409ce98b 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -24,7 +24,7 @@ obj-$(CONFIG_MACH_MX21ADS) += mach-mx21ads.o
 
 # i.MX25 based machines
 obj-$(CONFIG_MACH_MX25_3DS) += mach-mx25_3ds.o
-obj-$(CONFIG_MACH_EUKREA_CPUIMX25) += mach-eukrea_cpuimx25.o
+obj-$(CONFIG_MACH_EUKREA_CPUIMX25SD) += mach-eukrea_cpuimx25.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD25_BASEBOARD) += eukrea_mbimxsd25-baseboard.o
 
 # i.MX27 based machines
@@ -57,7 +57,7 @@ obj-$(CONFIG_MACH_BUG) += mach-bug.o
 # i.MX35 based machines
 obj-$(CONFIG_MACH_PCM043) += mach-pcm043.o
 obj-$(CONFIG_MACH_MX35_3DS) += mach-mx35_3ds.o
-obj-$(CONFIG_MACH_EUKREA_CPUIMX35) += mach-cpuimx35.o
+obj-$(CONFIG_MACH_EUKREA_CPUIMX35SD) += mach-cpuimx35.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o
 obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o
 
diff --git a/arch/arm/mach-imx/clock-imx35.c b/arch/arm/mach-imx/clock-imx35.c
index 8116f119517d..ac8238caecb9 100644
--- a/arch/arm/mach-imx/clock-imx35.c
+++ b/arch/arm/mach-imx/clock-imx35.c
@@ -507,7 +507,7 @@ static struct clk_lookup lookups[] = {
 
 int __init mx35_clocks_init()
 {
-        unsigned int cgr2 = 3 << 26, cgr3 = 0;
+        unsigned int cgr2 = 3 << 26;
 
 #if defined(CONFIG_DEBUG_LL) && !defined(CONFIG_DEBUG_ICEDCC)
         cgr2 |= 3 << 16;
@@ -521,6 +521,12 @@ int __init mx35_clocks_init()
         __raw_writel((3 << 18), CCM_BASE + CCM_CGR0);
         __raw_writel((3 << 2) | (3 << 4) | (3 << 6) | (3 << 8) | (3 << 16),
                         CCM_BASE + CCM_CGR1);
+        __raw_writel(cgr2, CCM_BASE + CCM_CGR2);
+        __raw_writel(0, CCM_BASE + CCM_CGR3);
+
+        clk_enable(&iim_clk);
+        imx_print_silicon_rev("i.MX35", mx35_revision());
+        clk_disable(&iim_clk);
 
         /*
          * Check if we came up in internal boot mode. If yes, we need some
@@ -529,17 +535,11 @@ int __init mx35_clocks_init()
          */
         if (!(__raw_readl(CCM_BASE + CCM_RCSR) & (3 << 10))) {
                 /* Additionally turn on UART1, SCC, and IIM clocks */
-                cgr2 |= 3 << 16 | 3 << 4;
-                cgr3 |= 3 << 2;
+                clk_enable(&iim_clk);
+                clk_enable(&uart1_clk);
+                clk_enable(&scc_clk);
         }
 
-        __raw_writel(cgr2, CCM_BASE + CCM_CGR2);
-        __raw_writel(cgr3, CCM_BASE + CCM_CGR3);
-
-        clk_enable(&iim_clk);
-        imx_print_silicon_rev("i.MX35", mx35_revision());
-        clk_disable(&iim_clk);
-
 #ifdef CONFIG_MXC_USE_EPIT
         epit_timer_init(&epit1_clk,
                         MX35_IO_ADDRESS(MX35_EPIT1_BASE_ADDR), MX35_INT_EPIT1);
diff --git a/arch/arm/mach-imx/mach-cpuimx35.c b/arch/arm/mach-imx/mach-cpuimx35.c
index 66af2e8f7e57..362aae780601 100644
--- a/arch/arm/mach-imx/mach-cpuimx35.c
+++ b/arch/arm/mach-imx/mach-cpuimx35.c
@@ -53,12 +53,18 @@ static const struct imxi2c_platform_data
         .bitrate =              100000,
 };
 
+#define TSC2007_IRQGPIO         IMX_GPIO_NR(3, 2)
+static int tsc2007_get_pendown_state(void)
+{
+        return !gpio_get_value(TSC2007_IRQGPIO);
+}
+
 static struct tsc2007_platform_data tsc2007_info = {
         .model                  = 2007,
         .x_plate_ohms           = 180,
+        .get_pendown_state = tsc2007_get_pendown_state,
 };
 
-#define TSC2007_IRQGPIO         IMX_GPIO_NR(3, 2)
 static struct i2c_board_info eukrea_cpuimx35_i2c_devices[] = {
         {
                 I2C_BOARD_INFO("pcf8563", 0x51),
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index 5c837603ff0f..24994bb52147 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -362,7 +362,7 @@ static void __init mx51_babbage_init(void)
 {
         iomux_v3_cfg_t usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
         iomux_v3_cfg_t power_key = NEW_PAD_CTRL(MX51_PAD_EIM_A27__GPIO2_21,
-                PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH | PAD_CTL_PUS_100K_UP);
+                PAD_CTL_SRE_FAST | PAD_CTL_DSE_HIGH);
 
         imx51_soc_init();
 
diff --git a/arch/arm/mach-mx5/board-mx53_evk.c b/arch/arm/mach-mx5/board-mx53_evk.c
index 6bea31ab8f85..64bbfcea6f35 100644
--- a/arch/arm/mach-mx5/board-mx53_evk.c
+++ b/arch/arm/mach-mx5/board-mx53_evk.c
@@ -106,7 +106,7 @@ static inline void mx53_evk_fec_reset(void)
         gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
 }
 
-static struct fec_platform_data mx53_evk_fec_pdata = {
+static const struct fec_platform_data mx53_evk_fec_pdata __initconst = {
         .phy = PHY_INTERFACE_MODE_RMII,
 };
 
diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c
index 7678f7734db6..237bdecd9331 100644
--- a/arch/arm/mach-mx5/board-mx53_loco.c
+++ b/arch/arm/mach-mx5/board-mx53_loco.c
@@ -242,7 +242,7 @@ static inline void mx53_loco_fec_reset(void)
         gpio_set_value(LOCO_FEC_PHY_RST, 1);
 }
 
-static struct fec_platform_data mx53_loco_fec_data = {
+static const struct fec_platform_data mx53_loco_fec_data __initconst = {
         .phy = PHY_INTERFACE_MODE_RMII,
 };
 
diff --git a/arch/arm/mach-mx5/board-mx53_smd.c b/arch/arm/mach-mx5/board-mx53_smd.c
index 59c0845eb4a6..d42132a80e8f 100644
--- a/arch/arm/mach-mx5/board-mx53_smd.c
+++ b/arch/arm/mach-mx5/board-mx53_smd.c
@@ -104,7 +104,7 @@ static inline void mx53_smd_fec_reset(void)
         gpio_set_value(SMD_FEC_PHY_RST, 1);
 }
 
-static struct fec_platform_data mx53_smd_fec_data = {
+static const struct fec_platform_data mx53_smd_fec_data __initconst = {
         .phy = PHY_INTERFACE_MODE_RMII,
 };
 
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index ba1aa07bdb29..c15c5c9c9085 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -193,7 +193,7 @@ static struct platform_device rx51_charger_device = {
 static void __init rx51_charger_init(void)
 {
         WARN_ON(gpio_request_one(RX51_USB_TRANSCEIVER_RST_GPIO,
-                GPIOF_OUT_INIT_LOW, "isp1704_reset"));
+                GPIOF_OUT_INIT_HIGH, "isp1704_reset"));
 
         platform_device_register(&rx51_charger_device);
 }
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 292eee3be15f..28fcb27005d2 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -145,6 +145,9 @@ static int omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
                 pdata->reg_size = 4;
                 pdata->has_ccr = true;
         }
+        pdata->set_clk_src = omap2_mcbsp_set_clk_src;
+        if (id == 1)
+                pdata->mux_signal = omap2_mcbsp1_mux_rx_clk;
 
         if (oh->class->rev == MCBSP_CONFIG_TYPE3) {
                 if (id == 2)
@@ -174,9 +177,6 @@ static int omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
                                         name, oh->name);
                 return PTR_ERR(pdev);
         }
-        pdata->set_clk_src = omap2_mcbsp_set_clk_src;
-        if (id == 1)
-                pdata->mux_signal = omap2_mcbsp1_mux_rx_clk;
         omap_mcbsp_count++;
         return 0;
 }
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c
index a9106c392398..8662ef6e5681 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -273,6 +273,7 @@ static struct samsung_bl_gpio_info smdkv210_bl_gpio_info = {
 
 static struct platform_pwm_backlight_data smdkv210_bl_data = {
         .pwm_id = 3,
+        .pwm_period_ns = 1000,
 };
 
 static void __init smdkv210_map_io(void)
diff --git a/arch/arm/plat-mxc/cpufreq.c b/arch/arm/plat-mxc/cpufreq.c
index 74aac96cda20..73db34bf588a 100644
--- a/arch/arm/plat-mxc/cpufreq.c
+++ b/arch/arm/plat-mxc/cpufreq.c
@@ -17,6 +17,7 @@
  * the CPU clock speed on the fly.
  */
 
+#include <linux/module.h>
 #include <linux/cpufreq.h>
 #include <linux/clk.h>
 #include <linux/err.h>
@@ -97,7 +98,7 @@ static int mxc_set_target(struct cpufreq_policy *policy,
         return ret;
 }
 
-static int __init mxc_cpufreq_init(struct cpufreq_policy *policy)
+static int mxc_cpufreq_init(struct cpufreq_policy *policy)
 {
         int ret;
         int i;
diff --git a/arch/arm/plat-mxc/include/mach/uncompress.h b/arch/arm/plat-mxc/include/mach/uncompress.h
index 88fd40452567..477971b00930 100644
--- a/arch/arm/plat-mxc/include/mach/uncompress.h
+++ b/arch/arm/plat-mxc/include/mach/uncompress.h
@@ -98,6 +98,7 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id)
         case MACH_TYPE_PCM043:
         case MACH_TYPE_LILLY1131:
         case MACH_TYPE_VPR200:
+        case MACH_TYPE_EUKREA_CPUIMX35SD:
                 uart_base = MX3X_UART1_BASE_ADDR;
                 break;
         case MACH_TYPE_MAGX_ZN5:
diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c
index 42d74ea59084..e032717f7d02 100644
--- a/arch/arm/plat-mxc/pwm.c
+++ b/arch/arm/plat-mxc/pwm.c
@@ -32,6 +32,9 @@
 #define MX3_PWMSAR                0x0C    /* PWM Sample Register */
 #define MX3_PWMPR                 0x10    /* PWM Period Register */
 #define MX3_PWMCR_PRESCALER(x)    (((x - 1) & 0xFFF) << 4)
+#define MX3_PWMCR_DOZEEN                (1 << 24)
+#define MX3_PWMCR_WAITEN                (1 << 23)
+#define MX3_PWMCR_DBGEN                 (1 << 22)
 #define MX3_PWMCR_CLKSRC_IPG_HIGH (2 << 16)
 #define MX3_PWMCR_CLKSRC_IPG      (1 << 16)
 #define MX3_PWMCR_EN              (1 << 0)
@@ -74,10 +77,21 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
                 do_div(c, period_ns);
                 duty_cycles = c;
 
+                /*
+                 * according to imx pwm RM, the real period value should be
+                 * PERIOD value in PWMPR plus 2.
+                 */
+                if (period_cycles > 2)
+                        period_cycles -= 2;
+                else
+                        period_cycles = 0;
+
                 writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
                 writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
 
-                cr = MX3_PWMCR_PRESCALER(prescale) | MX3_PWMCR_EN;
+                cr = MX3_PWMCR_PRESCALER(prescale) |
+                        MX3_PWMCR_DOZEEN | MX3_PWMCR_WAITEN |
+                        MX3_PWMCR_DBGEN | MX3_PWMCR_EN;
 
                 if (cpu_is_mx25())
                         cr |= MX3_PWMCR_CLKSRC_IPG;
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c
index 41ab97ebe4cf..10d160888133 100644
--- a/arch/arm/plat-orion/gpio.c
+++ b/arch/arm/plat-orion/gpio.c
@@ -384,12 +384,16 @@ void __init orion_gpio_init(int gpio_base, int ngpio,
         struct orion_gpio_chip *ochip;
         struct irq_chip_generic *gc;
         struct irq_chip_type *ct;
+        char gc_label[16];
 
         if (orion_gpio_chip_count == ARRAY_SIZE(orion_gpio_chips))
                 return;
 
+        snprintf(gc_label, sizeof(gc_label), "orion_gpio%d",
+                orion_gpio_chip_count);
+
         ochip = orion_gpio_chips + orion_gpio_chip_count;
-        ochip->chip.label = "orion_gpio";
+        ochip->chip.label = kstrdup(gc_label, GFP_KERNEL);
         ochip->chip.request = orion_gpio_request;
         ochip->chip.direction_input = orion_gpio_direction_input;
         ochip->chip.get = orion_gpio_get;
diff --git a/arch/arm/plat-samsung/dev-backlight.c b/arch/arm/plat-samsung/dev-backlight.c
index e657305644cc..a976c023b286 100644
--- a/arch/arm/plat-samsung/dev-backlight.c
+++ b/arch/arm/plat-samsung/dev-backlight.c
@@ -15,7 +15,6 @@
 #include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/pwm_backlight.h>
-#include <linux/slab.h>
 
 #include <plat/devs.h>
 #include <plat/gpio-cfg.h>
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index 7429b47c3aca..381edcd5bc29 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -1181,13 +1181,11 @@ static int __devinit ds_probe(struct vio_dev *vdev,
 
         dp->rcv_buf_len = 4096;
 
-        dp->ds_states = kzalloc(sizeof(ds_states_template),
-                                GFP_KERNEL);
+        dp->ds_states = kmemdup(ds_states_template,
+                                sizeof(ds_states_template), GFP_KERNEL);
         if (!dp->ds_states)
                 goto out_free_rcv_buf;
 
-        memcpy(dp->ds_states, ds_states_template,
-               sizeof(ds_states_template));
         dp->num_ds_states = ARRAY_SIZE(ds_states_template);
 
         for (i = 0; i < dp->num_ds_states; i++)
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 46614807a57f..741df916c124 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -58,12 +58,10 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len
         void *new_val;
         int err;
 
-        new_val = kmalloc(len, GFP_KERNEL);
+        new_val = kmemdup(val, len, GFP_KERNEL);
         if (!new_val)
                 return -ENOMEM;
 
-        memcpy(new_val, val, len);
-
         err = -ENODEV;
 
         mutex_lock(&of_set_property_mutex);
diff --git a/arch/sparc/mm/btfixup.c b/arch/sparc/mm/btfixup.c
index 5175ac2f4820..8a7f81743c12 100644
--- a/arch/sparc/mm/btfixup.c
+++ b/arch/sparc/mm/btfixup.c
@@ -302,8 +302,7 @@ void __init btfixup(void)
                                 case 'i':       /* INT */
                                         if ((insn & 0xc1c00000) == 0x01000000) /* %HI */
                                                 set_addr(addr, q[1], fmangled, (insn & 0xffc00000) | (p[1] >> 10));
-                                        else if ((insn & 0x80002000) == 0x80002000 &&
-                                                 (insn & 0x01800000) != 0x01800000) /* %LO */
+                                        else if ((insn & 0x80002000) == 0x80002000) /* %LO */
                                                 set_addr(addr, q[1], fmangled, (insn & 0xffffe000) | (p[1] & 0x3ff));
                                         else {
                                                 prom_printf(insn_i, p, addr, insn);
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index c9547033e38e..908b96957d88 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -53,13 +53,6 @@
  */
 #define E820_RESERVED_KERN        128
 
-/*
- * Address ranges that need to be mapped by the kernel direct
- * mapping. This is used to make sure regions such as
- * EFI_RUNTIME_SERVICES_DATA are directly mapped. See setup_arch().
- */
-#define E820_RESERVED_EFI         129
-
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
 struct e820entry {
@@ -122,7 +115,6 @@ static inline void early_memtest(unsigned long start, unsigned long end)
 }
 #endif
 
-extern unsigned long e820_end_pfn(unsigned long limit_pfn, unsigned type);
 extern unsigned long e820_end_of_ram_pfn(void);
 extern unsigned long e820_end_of_low_ram_pfn(void);
 extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align);
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index b8d8bfcd44a9..7093e4a6a0bc 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -33,6 +33,8 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
 #define efi_call_virt6(f, a1, a2, a3, a4, a5, a6)       \
         efi_call_virt(f, a1, a2, a3, a4, a5, a6)
 
+#define efi_ioremap(addr, size, type)           ioremap_cache(addr, size)
+
 #else /* !CONFIG_X86_32 */
 
 extern u64 efi_call0(void *fp);
@@ -82,6 +84,9 @@ extern u64 efi_call6(void *fp, u64 arg1, u64 arg2, u64 arg3,
         efi_call6((void *)(efi.systab->runtime->f), (u64)(a1), (u64)(a2), \
                   (u64)(a3), (u64)(a4), (u64)(a5), (u64)(a6))
 
+extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size,
+                                 u32 type);
+
 #endif /* CONFIG_X86_32 */
 
 extern int add_efi_memmap;
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 65ffd110a81b..303a0e48f076 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -135,7 +135,6 @@ static void __init e820_print_type(u32 type)
                 printk(KERN_CONT "(usable)");
                 break;
         case E820_RESERVED:
-        case E820_RESERVED_EFI:
                 printk(KERN_CONT "(reserved)");
                 break;
         case E820_ACPI:
@@ -784,7 +783,7 @@ u64 __init early_reserve_e820(u64 startt, u64 sizet, u64 align)
 /*
  * Find the highest page frame number we have available
  */
-unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type)
+static unsigned long __init e820_end_pfn(unsigned long limit_pfn, unsigned type)
 {
         int i;
         unsigned long last_pfn = 0;
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 9a9e40fb091c..cf0ef986cb6d 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -691,8 +691,6 @@ early_param("reservelow", parse_reservelow);
 
 void __init setup_arch(char **cmdline_p)
 {
-        unsigned long end_pfn;
-
 #ifdef CONFIG_X86_32
         memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
         visws_early_detect();
@@ -934,24 +932,7 @@ void __init setup_arch(char **cmdline_p)
         init_gbpages();
 
         /* max_pfn_mapped is updated here */
-        end_pfn = max_low_pfn;
-
-#ifdef CONFIG_X86_64
-        /*
-         * There may be regions after the last E820_RAM region that we
-         * want to include in the kernel direct mapping, such as
-         * EFI_RUNTIME_SERVICES_DATA.
-         */
-        if (efi_enabled) {
-                unsigned long efi_end;
-
-                efi_end = e820_end_pfn(MAXMEM>>PAGE_SHIFT, E820_RESERVED_EFI);
-                if (efi_end > max_low_pfn)
-                        end_pfn = efi_end;
-        }
-#endif
-
-        max_low_pfn_mapped = init_memory_mapping(0, end_pfn << PAGE_SHIFT);
+        max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
         max_pfn_mapped = max_low_pfn_mapped;
 
 #ifdef CONFIG_X86_64
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index c9718a16be15..37718f0f053d 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -323,13 +323,10 @@ static void __init do_add_efi_memmap(void)
                 case EFI_UNUSABLE_MEMORY:
                         e820_type = E820_UNUSABLE;
                         break;
-                case EFI_RUNTIME_SERVICES_DATA:
-                        e820_type = E820_RESERVED_EFI;
-                        break;
                 default:
                         /*
                          * EFI_RESERVED_TYPE EFI_RUNTIME_SERVICES_CODE
-                         * EFI_MEMORY_MAPPED_IO
+                         * EFI_RUNTIME_SERVICES_DATA EFI_MEMORY_MAPPED_IO
                          * EFI_MEMORY_MAPPED_IO_PORT_SPACE EFI_PAL_CODE
                          */
                         e820_type = E820_RESERVED;
@@ -674,21 +671,10 @@ void __init efi_enter_virtual_mode(void)
                 end_pfn = PFN_UP(end);
                 if (end_pfn <= max_low_pfn_mapped
                     || (end_pfn > (1UL << (32 - PAGE_SHIFT))
-                        && end_pfn <= max_pfn_mapped)) {
+                        && end_pfn <= max_pfn_mapped))
                         va = __va(md->phys_addr);
-
-                        if (!(md->attribute & EFI_MEMORY_WB)) {
-                                addr = (u64) (unsigned long)va;
-                                npages = md->num_pages;
-                                memrange_efi_to_native(&addr, &npages);
-                                set_memory_uc(addr, npages);
-                        }
-                } else {
-                        if (!(md->attribute & EFI_MEMORY_WB))
-                                va = ioremap_nocache(md->phys_addr, size);
-                        else
-                                va = ioremap_cache(md->phys_addr, size);
-                }
+                else
+                        va = efi_ioremap(md->phys_addr, size, md->type);
 
                 md->virt_addr = (u64) (unsigned long) va;
 
@@ -698,6 +684,13 @@ void __init efi_enter_virtual_mode(void)
                         continue;
                 }
 
+                if (!(md->attribute & EFI_MEMORY_WB)) {
+                        addr = md->virt_addr;
+                        npages = md->num_pages;
+                        memrange_efi_to_native(&addr, &npages);
+                        set_memory_uc(addr, npages);
+                }
+
                 systab = (u64) (unsigned long) efi_phys.systab;
                 if (md->phys_addr <= systab && systab < end) {
                         systab += md->virt_addr - md->phys_addr;
diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
index e36bf714cb77..40e446941dd7 100644
--- a/arch/x86/platform/efi/efi_32.c
+++ b/arch/x86/platform/efi/efi_32.c
@@ -39,43 +39,14 @@
  */
 
 static unsigned long efi_rt_eflags;
-static pgd_t efi_bak_pg_dir_pointer[2];
 
 void efi_call_phys_prelog(void)
 {
-        unsigned long cr4;
-        unsigned long temp;
         struct desc_ptr gdt_descr;
 
         local_irq_save(efi_rt_eflags);
 
-        /*
-         * If I don't have PAE, I should just duplicate two entries in page
-         * directory. If I have PAE, I just need to duplicate one entry in
-         * page directory.
-         */
-        cr4 = read_cr4_safe();
-
-        if (cr4 & X86_CR4_PAE) {
-                efi_bak_pg_dir_pointer[0].pgd =
-                    swapper_pg_dir[pgd_index(0)].pgd;
-                swapper_pg_dir[0].pgd =
-                    swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd;
-        } else {
-                efi_bak_pg_dir_pointer[0].pgd =
-                    swapper_pg_dir[pgd_index(0)].pgd;
-                efi_bak_pg_dir_pointer[1].pgd =
-                    swapper_pg_dir[pgd_index(0x400000)].pgd;
-                swapper_pg_dir[pgd_index(0)].pgd =
-                    swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd;
-                temp = PAGE_OFFSET + 0x400000;
-                swapper_pg_dir[pgd_index(0x400000)].pgd =
-                    swapper_pg_dir[pgd_index(temp)].pgd;
-        }
-
-        /*
-         * After the lock is released, the original page table is restored.
-         */
+        load_cr3(initial_page_table);
         __flush_tlb_all();
 
         gdt_descr.address = __pa(get_cpu_gdt_table(0));
@@ -85,28 +56,13 @@ void efi_call_phys_prelog(void)
 
 void efi_call_phys_epilog(void)
 {
-        unsigned long cr4;
         struct desc_ptr gdt_descr;
 
         gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
         gdt_descr.size = GDT_SIZE - 1;
         load_gdt(&gdt_descr);
 
-        cr4 = read_cr4_safe();
-
-        if (cr4 & X86_CR4_PAE) {
-                swapper_pg_dir[pgd_index(0)].pgd =
-                    efi_bak_pg_dir_pointer[0].pgd;
-        } else {
-                swapper_pg_dir[pgd_index(0)].pgd =
-                    efi_bak_pg_dir_pointer[0].pgd;
-                swapper_pg_dir[pgd_index(0x400000)].pgd =
-                    efi_bak_pg_dir_pointer[1].pgd;
-        }
-
-        /*
-         * After the lock is released, the original page table is restored.
-         */
+        load_cr3(swapper_pg_dir);
         __flush_tlb_all();
 
         local_irq_restore(efi_rt_eflags);
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 312250c6b2de..ac3aa54e2654 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -80,3 +80,20 @@ void __init efi_call_phys_epilog(void)
         local_irq_restore(efi_flags);
         early_code_mapping_set_exec(0);
 }
+
+void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size,
+                                 u32 type)
+{
+        unsigned long last_map_pfn;
+
+        if (type == EFI_MEMORY_MAPPED_IO)
+                return ioremap(phys_addr, size);
+
+        last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
+        if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size) {
+                unsigned long top = last_map_pfn << PAGE_SHIFT;
+                efi_ioremap(top, size - (top - phys_addr), type);
+        }
+
+        return (void __iomem *)__va(phys_addr);
+}
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 1093f80c162d..b2c7179fa263 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -173,9 +173,21 @@ static unsigned long __init xen_get_max_pages(void)
         domid_t domid = DOMID_SELF;
         int ret;
 
-        ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
-        if (ret > 0)
-                max_pages = ret;
+        /*
+         * For the initial domain we use the maximum reservation as
+         * the maximum page.
+         *
+         * For guest domains the current maximum reservation reflects
+         * the current maximum rather than the static maximum. In this
+         * case the e820 map provided to us will cover the static
+         * maximum region.
+         */
+        if (xen_initial_domain()) {
+                ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
+                if (ret > 0)
+                        max_pages = ret;
+        }
+
         return min(max_pages, MAX_DOMAIN_PAGES);
 }